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Neung Teaumroong
School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, 111, Maha Witthayalai Rd, Suranari, Mueang Nakhon Ratchasima District, Nakhon Ratchasima 30000, Thailand

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Journal article
Published: 24 August 2021 in Water
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Microalgae cultivation in wastewater is an emerging approach to remove its contaminants and generate microalgal biomass. This study aimed to screen and isolate potential strains in a cassava biogas effluent wastewater (CBEW) treatment system and produce algal biomass. Chlorella sorokiniana strains P21 and WB1DG were isolated from CBEW and found to grow by utilizing various carbon sources. Experiments conducted in a batch reactor using an unsterilized substrate were done to evaluate the nutrient removal and growth of isolated strains from CBEW. The results showed that C. sorokiniana P21 and WB1DG could achieve biomass accumulation of more than 2564 and 1301 mg L−1, respectively. The removal efficiencies of chemical oxygen demand (COD), total phosphorous (TP), and total inorganic nitrogen (TIN) were found up to be 63.42, 91.68, and 70.66%, respectively, in a WB1DG culture and 73.78, 92.11, and 67.33%, respectively, in a P21 culture. Harvestability of the P21 strain was examined using several coagulant–flocculants. FeCl3 was found to remove more than 90% of the cells. Nutrient removal and growth rates resulting from these indigenous strains with application of untreated CBEW support the possibility of this strain being a promising candidate to couple a CBEW treatment and algal biomass generation with minimal process adjustment.

ACS Style

Mohamad Padri; Nittaya Boontian; Neung Teaumroong; Pongdet Piromyou; Chatlada Piasai. Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability. Water 2021, 13, 2314 .

AMA Style

Mohamad Padri, Nittaya Boontian, Neung Teaumroong, Pongdet Piromyou, Chatlada Piasai. Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability. Water. 2021; 13 (17):2314.

Chicago/Turabian Style

Mohamad Padri; Nittaya Boontian; Neung Teaumroong; Pongdet Piromyou; Chatlada Piasai. 2021. "Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability." Water 13, no. 17: 2314.

Article
Published: 16 August 2021 in Scientific Reports
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Host-specific legume-rhizobium symbiosis is strictly controlled by rhizobial type III effectors (T3Es) in some cases. Here, we demonstrated that the symbiosis of Vigna radiata (mung bean) with Bradyrhizobium diazoefficiens USDA110 is determined by NopE, and this symbiosis is highly dependent on host genotype. NopE specifically triggered incompatibility with V. radiata cv. KPS2, but it promoted nodulation in other varieties of V. radiata, including KPS1. Interestingly, NopE1 and its paralogue NopE2, which exhibits calcium-dependent autocleavage, yield similar results in modulating KPS1 nodulation. Furthermore, NopE is required for early infection and nodule organogenesis in compatible plants. Evolutionary analysis revealed that NopE is highly conserved among bradyrhizobia and plant-associated endophytic and pathogenic bacteria. Our findings suggest that V. radiata and B. diazoefficiens USDA110 may use NopE to optimize their symbiotic interactions by reducing phytohormone-mediated ETI-type (PmETI) responses via salicylic acid (SA) biosynthesis suppression.

ACS Style

Pongdet Piromyou; Hien P. Nguyen; Pongpan Songwattana; Pakpoom Boonchuen; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Piyada Alisha Tantasawat; Michael Göttfert; Shin Okazaki; Neung Teaumroong. The Bradyrhizobium diazoefficiens type III effector NopE modulates the regulation of plant hormones towards nodulation in Vigna radiata. Scientific Reports 2021, 11, 1 -12.

AMA Style

Pongdet Piromyou, Hien P. Nguyen, Pongpan Songwattana, Pakpoom Boonchuen, Kamonluck Teamtisong, Panlada Tittabutr, Nantakorn Boonkerd, Piyada Alisha Tantasawat, Michael Göttfert, Shin Okazaki, Neung Teaumroong. The Bradyrhizobium diazoefficiens type III effector NopE modulates the regulation of plant hormones towards nodulation in Vigna radiata. Scientific Reports. 2021; 11 (1):1-12.

Chicago/Turabian Style

Pongdet Piromyou; Hien P. Nguyen; Pongpan Songwattana; Pakpoom Boonchuen; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Piyada Alisha Tantasawat; Michael Göttfert; Shin Okazaki; Neung Teaumroong. 2021. "The Bradyrhizobium diazoefficiens type III effector NopE modulates the regulation of plant hormones towards nodulation in Vigna radiata." Scientific Reports 11, no. 1: 1-12.

Publisher correction
Published: 11 June 2021 in Scientific Reports
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An amendment to this paper has been published and can be accessed via a link at the top of the paper.

ACS Style

Pongpan Songwattana; Clémence Chaintreuil; Jenjira Wongdee; Albin Teulet; Mamadou Mbaye; Pongdet Piromyou; Djamel Gully; Joel Fardoux; Alexandre Mahougnon Aurel Zoumman; Alicia Camuel; Panlada Tittabutr; Neung Teaumroong; Eric Giraud. Publisher Correction: Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species. Scientific Reports 2021, 11, 1 -1.

AMA Style

Pongpan Songwattana, Clémence Chaintreuil, Jenjira Wongdee, Albin Teulet, Mamadou Mbaye, Pongdet Piromyou, Djamel Gully, Joel Fardoux, Alexandre Mahougnon Aurel Zoumman, Alicia Camuel, Panlada Tittabutr, Neung Teaumroong, Eric Giraud. Publisher Correction: Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species. Scientific Reports. 2021; 11 (1):1-1.

Chicago/Turabian Style

Pongpan Songwattana; Clémence Chaintreuil; Jenjira Wongdee; Albin Teulet; Mamadou Mbaye; Pongdet Piromyou; Djamel Gully; Joel Fardoux; Alexandre Mahougnon Aurel Zoumman; Alicia Camuel; Panlada Tittabutr; Neung Teaumroong; Eric Giraud. 2021. "Publisher Correction: Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species." Scientific Reports 11, no. 1: 1-1.

Journal article
Published: 01 March 2021 in Scientific Reports
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The Bradyrhizobium vignae strain ORS3257 is an elite strain recommended for cowpea inoculation in Senegal. This strain was recently shown to establish symbioses on some Aeschynomene species using a cocktail of Type III effectors (T3Es) secreted by the T3SS machinery. In this study, using a collection of mutants in different T3Es genes, we sought to identify the effectors that modulate the symbiotic properties of ORS3257 in three Vigna species (V. unguiculata, V. radiata and V. mungo). While the T3SS had a positive impact on the symbiotic efficiency of the strain in V. unguiculata and V. mungo, it blocked symbiosis with V. radiata. The combination of effectors promoting nodulation in V. unguiculata and V. mungo differed, in both cases, NopT and NopAB were involved, suggesting they are key determinants for nodulation, and to a lesser extent, NopM1 and NopP1, which are additionally required for optimal symbiosis with V. mungo. In contrast, only one effector, NopP2, was identified as the cause of the incompatibility between ORS3257 and V. radiata. The identification of key effectors which promote symbiotic efficiency or render the interaction incompatible is important for the development of inoculation strategies to improve the growth of Vigna species cultivated in Africa and Asia.

ACS Style

Pongpan Songwattana; Clémence Chaintreuil; Jenjira Wongdee; Albin Teulet; Mamadou Mbaye; Pongdet Piromyou; Djamel Gully; Joel Fardoux; Alexandre Mahougnon Aurel Zoumman; Alicia Camuel; Panlada Tittabutr; Neung Teaumroong; Eric Giraud. Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species. Scientific Reports 2021, 11, 1 -12.

AMA Style

Pongpan Songwattana, Clémence Chaintreuil, Jenjira Wongdee, Albin Teulet, Mamadou Mbaye, Pongdet Piromyou, Djamel Gully, Joel Fardoux, Alexandre Mahougnon Aurel Zoumman, Alicia Camuel, Panlada Tittabutr, Neung Teaumroong, Eric Giraud. Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species. Scientific Reports. 2021; 11 (1):1-12.

Chicago/Turabian Style

Pongpan Songwattana; Clémence Chaintreuil; Jenjira Wongdee; Albin Teulet; Mamadou Mbaye; Pongdet Piromyou; Djamel Gully; Joel Fardoux; Alexandre Mahougnon Aurel Zoumman; Alicia Camuel; Panlada Tittabutr; Neung Teaumroong; Eric Giraud. 2021. "Identification of type III effectors modulating the symbiotic properties of Bradyrhizobium vignae strain ORS3257 with various Vigna species." Scientific Reports 11, no. 1: 1-12.

Journal article
Published: 17 February 2021 in Plants
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Under water deficit conditions, the essential macronutrient nitrogen becomes limited as a result of reduced dissolved nitrogen and root nitrogen uptake. An elevated nitrogen level might be able to mitigate these effects, integrated with the idea of using nitric oxide as abiotic stress tolerant inducers. In this study, we evaluated the potential of using elevated nitrogen priming prior to water shortage to mitigate plant stress through nitric oxide accumulation. We grew rice plants in 300 mg L−1 nitrogen for 10 weeks, then we primed plants with four different nitrogen concentrations: 100, 300 (control), 500 and 1000 mg L−1 nitrogen prior to inducing water deficit conditions. Plants primed with 500 mg L−1 nitrogen possessed a higher photosynthetic rate, relative water content, electrolyte leakage and lipid peroxidation under water deficit conditions, compared to control plants. The induction of water deficit tolerance was supported with the activation of antioxidant defense system, induced by the accumulation of nitric oxide in leaves and roots of rice plants. We originally demonstrated the accumulation of nitric oxide in leaves of rice plants. The elevated nitrogen priming can be used to enhance water deficit tolerance in irrigated paddy fields, instead of nitric oxide donors.

ACS Style

Kamolchanok Umnajkitikorn; Mitsutaka Fukudome; Toshiki Uchiumi; Neung Teaumroong. Elevated Nitrogen Priming Induced Oxinitro-Responses and Water Deficit Tolerance in Rice. Plants 2021, 10, 381 .

AMA Style

Kamolchanok Umnajkitikorn, Mitsutaka Fukudome, Toshiki Uchiumi, Neung Teaumroong. Elevated Nitrogen Priming Induced Oxinitro-Responses and Water Deficit Tolerance in Rice. Plants. 2021; 10 (2):381.

Chicago/Turabian Style

Kamolchanok Umnajkitikorn; Mitsutaka Fukudome; Toshiki Uchiumi; Neung Teaumroong. 2021. "Elevated Nitrogen Priming Induced Oxinitro-Responses and Water Deficit Tolerance in Rice." Plants 10, no. 2: 381.

Journal article
Published: 14 December 2020 in Plants
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Nowadays, oil crops are very attractive both for human consumption and biodiesel production; however, little is known about their commensal rhizosphere microbes. In this study, rhizosphere samples were collected from physic nut and sacha inchi plants grown in several areas of Thailand. Rhizobacteria, cultivable in nitrogen-free media, and arbuscular mycorrhizal (AM) fungi were isolated and examined for abundance, diversity, and plant growth-promoting activities (indole-3-acetic acid (IAA) and siderophore production, nitrogen fixation, and phosphate solubilization). Results showed that only the AM spore amount was affected by plant species and soil features. Considering rhizobacterial diversity, two classes—Alphaproteobacteria (Ensifer sp. and Agrobacterium sp.) and Gammaproteobacteria (Raoultella sp. and Pseudomonas spp.)—were identified in physic nut rhizosphere, and three classes; Actinobacteria (Microbacterium sp.), Betaproteobacteria (Burkholderia sp.) and Gammaproteobacteria (Pantoea sp.) were identified in the sacha inchi rhizosphere. Considering AM fungal diversity, four genera were identified (Acaulospora, Claroideoglomus, Glomus, and Funneliformis) in sacha inchi rhizospheres and two genera (Acaulospora and Glomus) in physic nut rhizospheres. The rhizobacteria with the highest IAA production and AM spores with the highest root-colonizing ability were identified, and the best ones (Ensifer sp. CM1-RB003 and Acaulospora sp. CM2-AMA3 for physic nut, and Pantoea sp. CR1-RB056 and Funneliformis sp. CR2-AMF1 for sacha inchi) were evaluated in pot experiments alone and in a consortium in comparison with a non-inoculated control. The microbial treatments increased the length and the diameter of stems and the chlorophyll content in both the crops. CM1-RB003 and CR1-RB056 also increased the number of leaves in sacha inchi. Interestingly, in physic nut, the consortium increased AM fungal root colonization and the numbers of offspring AM spores in comparison with those observed in sacha inchi. Our findings proved that AM fungal abundance and diversity likely rely on plant species and soil features. In addition, pot experiments showed that rhizosphere microorganisms were the key players in the development and growth of physic nut and sacha inchi.

ACS Style

Janjira Wiriya; Chakrapong Rangjaroen; Neung Teaumroong; Rungroch Sungthong; Saisamorn Lumyong. Rhizobacteria and Arbuscular Mycorrhizal Fungi of Oil Crops (Physic Nut and Sacha Inchi): A Cultivable-Based Assessment for Abundance, Diversity, and Plant Growth-Promoting Potentials. Plants 2020, 9, 1773 .

AMA Style

Janjira Wiriya, Chakrapong Rangjaroen, Neung Teaumroong, Rungroch Sungthong, Saisamorn Lumyong. Rhizobacteria and Arbuscular Mycorrhizal Fungi of Oil Crops (Physic Nut and Sacha Inchi): A Cultivable-Based Assessment for Abundance, Diversity, and Plant Growth-Promoting Potentials. Plants. 2020; 9 (12):1773.

Chicago/Turabian Style

Janjira Wiriya; Chakrapong Rangjaroen; Neung Teaumroong; Rungroch Sungthong; Saisamorn Lumyong. 2020. "Rhizobacteria and Arbuscular Mycorrhizal Fungi of Oil Crops (Physic Nut and Sacha Inchi): A Cultivable-Based Assessment for Abundance, Diversity, and Plant Growth-Promoting Potentials." Plants 9, no. 12: 1773.

Journal article
Published: 07 May 2020 in Microorganisms
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The objective of this research was to evaluate the PGPR effect on nodulation and nitrogen-fixing efficiency of soybean (Glycine max (L.) Merr.) by co-inoculation with Bradyrhizobium diazoefficiens USDA110. Co-inoculation of Bacillus velezensis S141 with USDA110 into soybean resulted in enhanced nodulation and N2-fixing efficiency by producing larger nodules. To understand the role of S141 on soybean and USDA110 symbiosis, putative genes related to IAA biosynthesis were disrupted, suggesting that co-inoculation of USDA110 with S141ΔyhcX reduces the number of large size nodules. It was revealed that yhcX may play a major role in IAA biosynthesis in S141 as well as provide a major impact on soybean growth promotion. The disruption of genes related to cytokinin biosynthesis and co-inoculation of USDA110 with S141ΔIPI reduced the number of very large size nodules, and it appears that IPI might play an important role in nodule size of soybean–Bradyrhizobium symbiosis. However, it was possible that not only IAA and cytokinin but also some other substances secreted from S141 facilitate Bradyrhizobium to trigger bigger nodule formation, resulting in enhanced N2-fixation. Therefore, the ability of S141 with Bradyrhizobium co-inoculation to enhance soybean N2-fixation strategy could be further developed for supreme soybean inoculants.

ACS Style

Surachat Sibponkrung; Takahiko Kondo; Kosei Tanaka; Panlada Tittabutr; Nantakorn Boonkerd; Ken-Ichi Yoshida; Neung Teaumroong. Co-Inoculation of Bacillus velezensis Strain S141 and Bradyrhizobium Strains Promotes Nodule Growth and Nitrogen Fixation. Microorganisms 2020, 8, 678 .

AMA Style

Surachat Sibponkrung, Takahiko Kondo, Kosei Tanaka, Panlada Tittabutr, Nantakorn Boonkerd, Ken-Ichi Yoshida, Neung Teaumroong. Co-Inoculation of Bacillus velezensis Strain S141 and Bradyrhizobium Strains Promotes Nodule Growth and Nitrogen Fixation. Microorganisms. 2020; 8 (5):678.

Chicago/Turabian Style

Surachat Sibponkrung; Takahiko Kondo; Kosei Tanaka; Panlada Tittabutr; Nantakorn Boonkerd; Ken-Ichi Yoshida; Neung Teaumroong. 2020. "Co-Inoculation of Bacillus velezensis Strain S141 and Bradyrhizobium Strains Promotes Nodule Growth and Nitrogen Fixation." Microorganisms 8, no. 5: 678.

Journal article
Published: 27 April 2020 in Genes
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Bradyrhizobium elkanii USDA61 possesses a functional type III secretion system (T3SS) that controls host-specific symbioses with legumes. Here, we demonstrated that B. elkanii T3SS is essential for the nodulation of several southern Asiatic Vigna mungo cultivars. Strikingly, inactivation of either Nod factor synthesis or T3SS in B. elkanii abolished nodulation of the V. mungo plants. Among the effectors, NopL was identified as a key determinant for T3SS-dependent symbiosis. Mutations of other effector genes, such as innB, nopP2, and bel2-5, also impacted symbiotic effectiveness, depending on host genotypes. The nopL deletion mutant formed no nodules on V. mungo, but infection thread formation was still maintained, thereby suggesting its pivotal role in nodule organogenesis. Phylogenetic analyses revealed that NopL was exclusively conserved among Bradyrhizobium and Sinorhizobium (Ensifer) species and showed a different phylogenetic lineage from T3SS. These findings suggest that V. mungo evolved a unique symbiotic signaling cascade that requires both NFs and T3Es (NopL).

ACS Style

Hien P. Nguyen; Safirah T. N. Ratu; Michiko Yasuda; Neung Teaumroong; Shin Okazaki. Identification of Bradyrhizobium elkanii USDA61 Type III Effectors Determining Symbiosis with Vigna mungo. Genes 2020, 11, 474 .

AMA Style

Hien P. Nguyen, Safirah T. N. Ratu, Michiko Yasuda, Neung Teaumroong, Shin Okazaki. Identification of Bradyrhizobium elkanii USDA61 Type III Effectors Determining Symbiosis with Vigna mungo. Genes. 2020; 11 (5):474.

Chicago/Turabian Style

Hien P. Nguyen; Safirah T. N. Ratu; Michiko Yasuda; Neung Teaumroong; Shin Okazaki. 2020. "Identification of Bradyrhizobium elkanii USDA61 Type III Effectors Determining Symbiosis with Vigna mungo." Genes 11, no. 5: 474.

Journal article
Published: 01 January 2020 in Microbes and Environments
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Bradyrhizobium sp. strain SUTN9-2 is a symbiotic and endophytic diazotrophic bacterium found in legume and rice plants and has the potential to promote growth. The present results revealed that SUTN9-2 underwent cell enlargement, increased its DNA content, and efficiently performed nitrogen fixation in response to rice extract. Some factors in rice extract induced the expression of cell cycle and nitrogen fixation genes. According to differentially expressed genes (DEGs) from the transcriptomic analysis, SUTN9-2 was affected by rice extract and the deletion of the bclA gene. The up-regulated DEGs encoding a class of oxidoreductases, which act with oxygen atoms and may have a role in controlling oxygen at an appropriate level for nitrogenase activity, followed by GroESL chaperonins are required for the function of nitrogenase. These results indicate that following its exposure to rice extract, nitrogen fixation by SUTN9-2 is induced by the collective effects of GroESL and oxidoreductases. The expression of the sensitivity to antimicrobial peptides transporter (sapDF) was also up-regulated, resulting in cell differentiation, even when bclA (sapDF) was mutated. This result implies similarities in the production of defensin-like antimicrobial peptides (DEFs) by rice and nodule-specific cysteine-rich (NCR) peptides in legume plants, which affect bacterial cell differentiation.

ACS Style

Teerana Greetatorn; Shun Hashimoto; Taro Maeda; Mitsutaka Fukudome; Pongdet Piromyou; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Masayoshi Kawaguchi; Toshiki Uchiumi; Neung Teaumroong. Mechanisms of Rice Endophytic Bradyrhizobial Cell Differentiation and Its Role in Nitrogen Fixation. Microbes and Environments 2020, 35, ME20049 .

AMA Style

Teerana Greetatorn, Shun Hashimoto, Taro Maeda, Mitsutaka Fukudome, Pongdet Piromyou, Kamonluck Teamtisong, Panlada Tittabutr, Nantakorn Boonkerd, Masayoshi Kawaguchi, Toshiki Uchiumi, Neung Teaumroong. Mechanisms of Rice Endophytic Bradyrhizobial Cell Differentiation and Its Role in Nitrogen Fixation. Microbes and Environments. 2020; 35 (3):ME20049.

Chicago/Turabian Style

Teerana Greetatorn; Shun Hashimoto; Taro Maeda; Mitsutaka Fukudome; Pongdet Piromyou; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Masayoshi Kawaguchi; Toshiki Uchiumi; Neung Teaumroong. 2020. "Mechanisms of Rice Endophytic Bradyrhizobial Cell Differentiation and Its Role in Nitrogen Fixation." Microbes and Environments 35, no. 3: ME20049.

Journal article
Published: 01 January 2020 in Microbes and Environments
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Bacteria exhibiting 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, which inhibits the biosynthesis of ethylene in higher plants, promote plant growth through the degradation of ethylene precursors, such as ACC. ACC deaminase activity in Bradyrhizobium sp. SUTN9-2 was enhanced by genetic engineering and adaptive laboratory evolution (ALE)-based methods. The transferal of a plasmid containing the acdR and acdS genes into SUTN9-2 was genetic engineering improved, while the ALE method was performed based on the accumulation of an adaptive bacterial population that continuously grew under specified growth conditions for a long time. ACC deaminase enzyme activity was 8.9–fold higher in SUTN9-2:pMG103::acdRS and 1.4–fold higher in SUTN9-2 (ACCDadap) than in the wild-type strain. The effects of increased activity were examined in the host plant (Vigna radiata (L.) R.Wilczek SUT1). The improved strains enhanced nodulation in early stage of plant growth. SUTN9-2:pMG103::acdRS also maintained nitrogen fixation under water deficit conditions and increased the plant biomass after rehydration. Changes in nucleotides and amino acids in the AcdS protein of SUTN9-2 (ACCDadap) were then investigated. Some nucleotides predicted to be located in the ACC-binding site were mutated. These mutations may have increased ACC deaminase activity, which enhanced both symbiotic interactions and drought tolerance and promoted recovery after rehydration more than lower ACC deaminase activity. Adaptive evolution represents a promising strategy for further applications in the field.

ACS Style

Sukanlaya Sarapat; Pongpan Songwattana; Aphakorn Longtonglang; Kamolchanok Umnajkitikorn; Teerayoot Girdthai; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. Effects of Increased 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Activity in Bradyrhizobium sp. SUTN9-2 on Mung Bean Symbiosis under Water Deficit Conditions. Microbes and Environments 2020, 35, ME20024 .

AMA Style

Sukanlaya Sarapat, Pongpan Songwattana, Aphakorn Longtonglang, Kamolchanok Umnajkitikorn, Teerayoot Girdthai, Panlada Tittabutr, Nantakorn Boonkerd, Neung Teaumroong. Effects of Increased 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Activity in Bradyrhizobium sp. SUTN9-2 on Mung Bean Symbiosis under Water Deficit Conditions. Microbes and Environments. 2020; 35 (3):ME20024.

Chicago/Turabian Style

Sukanlaya Sarapat; Pongpan Songwattana; Aphakorn Longtonglang; Kamolchanok Umnajkitikorn; Teerayoot Girdthai; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. 2020. "Effects of Increased 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Activity in Bradyrhizobium sp. SUTN9-2 on Mung Bean Symbiosis under Water Deficit Conditions." Microbes and Environments 35, no. 3: ME20024.

Original article
Published: 13 January 2019 in Letters in Applied Microbiology
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Bradyrhizobium sp. strain SUTN9‐2 was confirmed as rice endophytic bacteria and also as rice growth promotion agent. SUTN9‐2 showed the capability of plant growth promotion charecteristics, such as indole‐3‐acetic acid (IAA) and 1‐amino‐cyclopropane‐1‐carboxylic acid (ACC) deaminase productions and nitrogen fixation. In this study, the ability of SUTN9‐2 to stimulate rice growth was investigated at different stages with N‐free and NH4NO3 under in vivo condition. The rice dry weight and chlorophyll content could be enhanced when SUTN9‐2 was inoculated in N‐free, especially at seedling stage (7 and 14 dai). The rice dry weight was also increased when SUTN9‐2 was inoculated with NH4NO3 at 7 and14 dai. The results of quantitative analysis of IAA and ACC deaminase were inconsistent with the expression of genes involved in IAA (nit) and ACC deaminase (acdS) productions. This inconsistently could implied that IAA and ACC deaminase produced from SUTN9‐2 do not directly affect rice growth, but other factors resulting from the production of IAA and ACC deaminase could be involved. Moreover, the expression of genes involved in nitrogen fixation (nifH and nifV) of SUTN9‐2 was also induced in rice tissues. This finding suggested that rice growth promotion may be supported by NH4NO3 together with nitrogen fixation by SUTN9‐2. This article is protected by copyright. All rights reserved.

ACS Style

Teerana Greetatorn; Shun Hashimoto; Sukanlaya Sarapat; Panlada Tittabutr; Nantakorn Boonkerd; Toshiki Uchiumi; Neung Teaumroong. Empowering rice seedling growth by endophytic Bradyrhizobium sp. SUTN 9‐2. Letters in Applied Microbiology 2019, 1 .

AMA Style

Teerana Greetatorn, Shun Hashimoto, Sukanlaya Sarapat, Panlada Tittabutr, Nantakorn Boonkerd, Toshiki Uchiumi, Neung Teaumroong. Empowering rice seedling growth by endophytic Bradyrhizobium sp. SUTN 9‐2. Letters in Applied Microbiology. 2019; ():1.

Chicago/Turabian Style

Teerana Greetatorn; Shun Hashimoto; Sukanlaya Sarapat; Panlada Tittabutr; Nantakorn Boonkerd; Toshiki Uchiumi; Neung Teaumroong. 2019. "Empowering rice seedling growth by endophytic Bradyrhizobium sp. SUTN 9‐2." Letters in Applied Microbiology , no. : 1.

Original article
Published: 27 December 2018 in MicrobiologyOpen
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This study supports the idea that the evolution of type III secretion system (T3SS) is one of the factors that controls Vigna radiata–bradyrhizobia symbiosis. Based on phylogenetic tree data and gene arrangements, it seems that the T3SSs of the Thai bradyrhizobial strains SUTN9‐2, DOA1, and DOA9 and the Senegalese strain ORS3257 may share the same origin. Therefore, strains SUTN9‐2, DOA1, DOA9, and ORS3257 may have evolved their T3SSs independently from other bradyrhizobia, depending on biological and/or geological events. For functional analyses, the rhcJ genes of ORS3257, SUTN9‐2, DOA9, and USDA110 were disrupted. These mutations had cultivar‐specific effects on nodulation properties. The T3SSs of ORS3257 and DOA9 showed negative effects on V. radiata nodulation, while the T3SS of SUTN9‐2 showed no effect on V. radiata symbiosis. In the roots of V. radiata CN72, the expression levels of the PR1 gene after inoculation with ORS3257 and DOA9 were significantly higher than those after inoculation with ORS3257 ΩT3SS, DOA9 ΩT3SS, and SUTN9‐2. The T3Es from ORS3257 and DOA9 could trigger PR1 expression, which ultimately leads to abort nodulation. In contrast, the T3E from SUTN9‐2 reduced PR1 expression. It seems that the mutualistic relationship between SUTN9‐2 and V. radiata may have led to the selection of the most well‐adapted combination of T3SS and symbiotic bradyrhizobial genotype.

ACS Style

Pongdet Piromyou; Pongpan Songwattana; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Piyada Alisha Tantasawat; Eric Giraud; Michael Göttfert; Neung Teaumroong. Mutualistic co‐evolution of T3SSs during the establishment of symbiotic relationships betweenVigna radiataand Bradyrhizobia. MicrobiologyOpen 2018, 8, e781 .

AMA Style

Pongdet Piromyou, Pongpan Songwattana, Kamonluck Teamtisong, Panlada Tittabutr, Nantakorn Boonkerd, Piyada Alisha Tantasawat, Eric Giraud, Michael Göttfert, Neung Teaumroong. Mutualistic co‐evolution of T3SSs during the establishment of symbiotic relationships betweenVigna radiataand Bradyrhizobia. MicrobiologyOpen. 2018; 8 (7):e781.

Chicago/Turabian Style

Pongdet Piromyou; Pongpan Songwattana; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Piyada Alisha Tantasawat; Eric Giraud; Michael Göttfert; Neung Teaumroong. 2018. "Mutualistic co‐evolution of T3SSs during the establishment of symbiotic relationships betweenVigna radiataand Bradyrhizobia." MicrobiologyOpen 8, no. 7: e781.

Research article
Published: 07 August 2018 in Environmental Microbiology
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The lateral transfer of symbiotic genes converting a predisposed soil bacteria into a legume symbiont has occurred repeatedly and independently during the evolution of rhizobia. We experimented the transfer of a symbiotic plasmid between Bradyrhizobium strains. The originality of the DOA9 donor is that it harbors a symbiotic mega‐plasmid (pDOA9) containing nod, nif and T3SS genes while the ORS278 recipient has the unique property of inducing nodules on some Aeschynomene species in the absence of Nod factors (NFs). We observed that the chimeric strain ORS278‐pDOA9* lost its ability to develop a functional symbiosis with A. indica and A. evenia. The mutation of rhcN and nodB led to partial restoration of nodule efficiency, indicating that T3SS effectors and NFs block the establishment of the NF‐independent symbiosis. Conversely, ORS278‐pDOA9* strain acquired the ability to form nodules on Crotalaria juncea and Macroptillium artropurpureum but not on NF‐dependent Aeschynomene (A. afraspera and A. americana), suggesting that the ORS278 strain also harbors incompatible factors that block the interaction with these species. These data indicate that the symbiotic properties of a chimeric rhizobia cannot be anticipated due to new combination of symbiotic and non–symbiotic determinants that may interfere during the interaction with the host plant. This article is protected by copyright. All rights reserved.

ACS Style

Pongpan Songwattana; Panlada Tittabutr; Jenjira Wongdee; Kamonluck Teamtisong; Dyah Wulandari; Albin Teulet; Joel Fardoux; Nantakorn Boonkerd; Eric Giraud; Neung Teaumroong. Symbiotic properties of a chimeric Nod‐independent photosynthetic Bradyrhizobium strain obtained by conjugative transfer of a symbiotic plasmid. Environmental Microbiology 2018, 21, 3442 -3454.

AMA Style

Pongpan Songwattana, Panlada Tittabutr, Jenjira Wongdee, Kamonluck Teamtisong, Dyah Wulandari, Albin Teulet, Joel Fardoux, Nantakorn Boonkerd, Eric Giraud, Neung Teaumroong. Symbiotic properties of a chimeric Nod‐independent photosynthetic Bradyrhizobium strain obtained by conjugative transfer of a symbiotic plasmid. Environmental Microbiology. 2018; 21 (9):3442-3454.

Chicago/Turabian Style

Pongpan Songwattana; Panlada Tittabutr; Jenjira Wongdee; Kamonluck Teamtisong; Dyah Wulandari; Albin Teulet; Joel Fardoux; Nantakorn Boonkerd; Eric Giraud; Neung Teaumroong. 2018. "Symbiotic properties of a chimeric Nod‐independent photosynthetic Bradyrhizobium strain obtained by conjugative transfer of a symbiotic plasmid." Environmental Microbiology 21, no. 9: 3442-3454.

Plant microorganism interaction
Published: 01 January 2018 in Journal of Plant Interactions
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Abilities of rhizobacteria to promote mycorrhization of arbuscular mycorrhiza (AM) on maize roots have been documented. In this study, the rhizospheric bacterium, Brevibacillus sp. SUT47 was found to significantly promote spore number and root colonization of Acaulospora tuberculata. To understand how maize roots respond to SUT47, a comparative proteomics analysis was performed. We found that at 30 days after inoculation (dai), the proteins involved in plant defense mechanism and Reactive Oxygen Species (ROS)-scavenging enzymes were the main proteins altered in tested maize roots. Levels of salicylic acid, hydrogen peroxide, and the activity of superoxide dismutase were significantly decreased in AM+SUT47 roots at 7 dai, while the activities of peroxidase and ascorbate peroxidase increased especially in AM+SUT47 roots at 30 dai. Thus, this work showed the alteration of some plant defense-related compounds and antioxidative enzyme activities that are associated with an enhancing maize root colonization by AM when co-inoculated with SUT47.

ACS Style

Watcharin Yuttavanichakul; Kamonluck Teamtisong; Neung Teaumroong; Nantakorn Boonkerd; Panlada Tittabutr. Brevibacillus sp. promotes maize root colonization by Acaulospora tuberculata and the alteration of associated plant protein responses. Journal of Plant Interactions 2018, 13, 543 -554.

AMA Style

Watcharin Yuttavanichakul, Kamonluck Teamtisong, Neung Teaumroong, Nantakorn Boonkerd, Panlada Tittabutr. Brevibacillus sp. promotes maize root colonization by Acaulospora tuberculata and the alteration of associated plant protein responses. Journal of Plant Interactions. 2018; 13 (1):543-554.

Chicago/Turabian Style

Watcharin Yuttavanichakul; Kamonluck Teamtisong; Neung Teaumroong; Nantakorn Boonkerd; Panlada Tittabutr. 2018. "Brevibacillus sp. promotes maize root colonization by Acaulospora tuberculata and the alteration of associated plant protein responses." Journal of Plant Interactions 13, no. 1: 543-554.

Journal article
Published: 30 November 2017 in Genome Announcements
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Bacillus velezensis strain S141 is a plant growth-promoting rhizobacterium isolated from soybean ( Glycine max ) rhizosphere that enhances soybean growth, nodulation, and N 2 fixation efficiency by coinoculation with Bradyrhizobium diazoefficiens USDA110. The S141 genome was identified to comprise a 3,974,582-bp-long circular DNA sequence encoding at least 3,817 proteins.

ACS Style

Surachat Sibponkrung; Takahiko Kondo; Kosei Tanaka; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong; Ken-Ichi Yoshida. Genome Sequence of Bacillus velezensis S141, a New Strain of Plant Growth-Promoting Rhizobacterium Isolated from Soybean Rhizosphere. Genome Announcements 2017, 5, e01312-17 .

AMA Style

Surachat Sibponkrung, Takahiko Kondo, Kosei Tanaka, Panlada Tittabutr, Nantakorn Boonkerd, Neung Teaumroong, Ken-Ichi Yoshida. Genome Sequence of Bacillus velezensis S141, a New Strain of Plant Growth-Promoting Rhizobacterium Isolated from Soybean Rhizosphere. Genome Announcements. 2017; 5 (48):e01312-17.

Chicago/Turabian Style

Surachat Sibponkrung; Takahiko Kondo; Kosei Tanaka; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong; Ken-Ichi Yoshida. 2017. "Genome Sequence of Bacillus velezensis S141, a New Strain of Plant Growth-Promoting Rhizobacterium Isolated from Soybean Rhizosphere." Genome Announcements 5, no. 48: e01312-17.

Journal article
Published: 15 November 2017 in Applied and Environmental Microbiology
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Bradyrhizobium encompasses a variety of bacteria that can live in symbiotic and endophytic associations with leguminous and nonleguminous plants, such as rice. Therefore, it can be expected that rice endophytic bradyrhizobia can be applied in the rice-legume crop rotation system. Some endophytic bradyrhizobial strains were isolated from rice ( Oryza sativa L.) tissues. The rice biomass could be enhanced when supplementing bradyrhizobial strain inoculation with KNO 3 , NH 4 NO 3 , or urea, especially in Bradyrhizobium sp. strain SUTN9-2. In contrast, the strains which suppressed rice growth were photosynthetic bradyrhizobia and were found to produce nitric oxide (NO) in the rice root. The expression of genes involved in NO production was conducted using a quantitative reverse transcription-PCR (qRT-PCR) technique. The nirK gene expression level in Bradyrhizobium sp. strain SUT-PR48 with nitrate was higher than that of the norB gene. In contrast, the inoculation of SUTN9-2 resulted in a lower expression of the nirK gene than that of the norB gene. These results suggest that SUT-PR48 may accumulate NO more than SUTN9-2 does. Furthermore, the nifH expression of SUTN9-2 was induced in treatment without nitrogen supplementation in an endophytic association with rice. The indole-3-acetic acid (IAA) and 1-amino-cyclopropane-1-carboxylic acid (ACC) deaminase produced in planta by SUTN9-2 were also detected. Enumeration of rice endophytic bradyrhizobia from rice tissues revealed that SUTN9-2 persisted in rice tissues until rice-harvesting season. The mung bean ( Vigna radiata ) can be nodulated after rice stubbles were decomposed. Therefore, it is possible that rice stubbles can be used as an inoculum in the rice-legume crop rotation system under both low- and high-organic-matter soil conditions. IMPORTANCE This study shows that some rice endophytic bradyrhizobia could produce IAA and ACC deaminase and have a nitrogen fixation ability during symbiosis inside rice tissues. These characteristics may play an important role in rice growth promotion by endophytic bradyrhizobia. However, the NO-producing strains should be of concern due to a possible deleterious effect of NO on rice growth. In addition, this study reports the application of endophytic bradyrhizobia in rice stubbles, and the rice stubbles were used directly as an inoculum for a leguminous plant (mung bean). The degradation of rice stubbles leads to an increased number of SUTN9-2 in the soil and may result in increased mung bean nodulation. Therefore, the persistence of endophytic bradyrhizobia in rice tissues can be developed to use rice stubbles as an inoculum for mung bean in a rice-legume crop rotation system.

ACS Style

Pongdet Piromyou; Teerana Greetatorn; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. Potential of Rice Stubble as a Reservoir of Bradyrhizobial Inoculum in Rice-Legume Crop Rotation. Applied and Environmental Microbiology 2017, 83, e01488-17 .

AMA Style

Pongdet Piromyou, Teerana Greetatorn, Kamonluck Teamtisong, Panlada Tittabutr, Nantakorn Boonkerd, Neung Teaumroong. Potential of Rice Stubble as a Reservoir of Bradyrhizobial Inoculum in Rice-Legume Crop Rotation. Applied and Environmental Microbiology. 2017; 83 (22):e01488-17.

Chicago/Turabian Style

Pongdet Piromyou; Teerana Greetatorn; Kamonluck Teamtisong; Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. 2017. "Potential of Rice Stubble as a Reservoir of Bradyrhizobial Inoculum in Rice-Legume Crop Rotation." Applied and Environmental Microbiology 83, no. 22: e01488-17.

Original research article
Published: 20 September 2017 in Frontiers in Microbiology
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The Bradyrhizobium sp. DOA9 strain isolated from a paddy field has the ability to nodulate a wide spectrum of legumes. Unlike other bradyrhizobia, this strain has a symbiotic plasmid harboring nod, nif and T3SS genes. This T3SS cluster contains all the genes necessary for the formation of the secretory apparatus and the transcriptional activator (TtsI), which is preceded by a nod-box motif. An in silico search predicted 14 effectors putatively translocated by this T3SS machinery. In this study, we explored the role of the T3SS in the symbiotic performance of DOA9 by evaluating the ability of a T3SS mutant (ΩrhcN) to nodulate legumes belonging to Dalbergioid, Millettioid and Genistoid tribes. Among the nine species tested, four (Arachis hypogea, Vigna radiata, Crotalaria juncea, Macroptilium atropurpureum) responded positively to the rhcN mutation (ranging from suppression of plant defense reactions, an increase in the number of nodules and a dramatic improvement in nodule development and infection), one (Stylosanthes hamata) responded negatively (fewer nodules and less nitrogen fixation) and four species (Aeschynomene americana, Aeschynomene afraspera, Indigofera tinctoria and Desmodium tortuosum) displayed no phenotype. We also tested the role of the T3SS in the ability of the DOA9 strain to endophytically colonize rice roots, but detected no effect of the T3SS mutation, in contrast to what was previously reported in the Bradyrhizobium SUTN9-2 strain. Taken together, these data indicate that DOA9 contains a functional T3SS that interferes with the ability of the strain to interact symbiotically with legumes but not with rice.

ACS Style

Pongpan Songwattana; Rujirek Noisangiam; Kamonluck Teamtisong; Janpen Prakamhang; Albin Teulet; Panlada Tittabutr; Pongdet Piromyou; Nantakorn Boonkerd; Eric Giraud; Neung Teaumroong. Type 3 Secretion System (T3SS) of Bradyrhizobium sp. DOA9 and Its Roles in Legume Symbiosis and Rice Endophytic Association. Frontiers in Microbiology 2017, 8, 1810 .

AMA Style

Pongpan Songwattana, Rujirek Noisangiam, Kamonluck Teamtisong, Janpen Prakamhang, Albin Teulet, Panlada Tittabutr, Pongdet Piromyou, Nantakorn Boonkerd, Eric Giraud, Neung Teaumroong. Type 3 Secretion System (T3SS) of Bradyrhizobium sp. DOA9 and Its Roles in Legume Symbiosis and Rice Endophytic Association. Frontiers in Microbiology. 2017; 8 ():1810.

Chicago/Turabian Style

Pongpan Songwattana; Rujirek Noisangiam; Kamonluck Teamtisong; Janpen Prakamhang; Albin Teulet; Panlada Tittabutr; Pongdet Piromyou; Nantakorn Boonkerd; Eric Giraud; Neung Teaumroong. 2017. "Type 3 Secretion System (T3SS) of Bradyrhizobium sp. DOA9 and Its Roles in Legume Symbiosis and Rice Endophytic Association." Frontiers in Microbiology 8, no. : 1810.

Plant microorganism interactions
Published: 01 January 2017 in Journal of Plant Interactions
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Seed treatment and foliar sprays of salicylic acid (SA) provided protection in rice against bacterial leaf blight (BLB) caused by bacterial Xanthomonas oryzae pv. oryzae (Xoo). Treatment of rice with exogenous SA reduced disease severity by more than 38%. Superoxide anion production and hypersensitive response increased approximately 28% and 110% at 6 and 48 h after Xoo inoculation, respectively, for plants treated with SA. Moreover, the Xoo in treated rice plants grew more slowly, resulting in a population that was half of that observed in the control. Fourier transform infrared spectroscopy analysis revealed that the higher ratios of 1233/1517, 1467/1517, and 1735/1517 cm−1 observed in treated rice suggested alteration of monomer composition of lignin and pectin in the rice cell wall. Exogenous SA-treated rice had more amide I β-sheet structure and lipids as shown by the peaks at 1629, 2851, and 1735 cm−1. These biochemical changes of rice treated with SA and inoculated with Xoo were related to primed resistance of the rice plants to BLB disease.

ACS Style

Toan Le Thanh; Kanjana Thumanu; Sopone Wongkaew; Nantakorn Boonkerd; Neung Teaumroong; Piyaporn Phansak; Natthiya Buensanteai. Salicylic acid-induced accumulation of biochemical components associated with resistance against Xanthomonas oryzae pv. oryzae in rice. Journal of Plant Interactions 2017, 12, 108 -120.

AMA Style

Toan Le Thanh, Kanjana Thumanu, Sopone Wongkaew, Nantakorn Boonkerd, Neung Teaumroong, Piyaporn Phansak, Natthiya Buensanteai. Salicylic acid-induced accumulation of biochemical components associated with resistance against Xanthomonas oryzae pv. oryzae in rice. Journal of Plant Interactions. 2017; 12 (1):108-120.

Chicago/Turabian Style

Toan Le Thanh; Kanjana Thumanu; Sopone Wongkaew; Nantakorn Boonkerd; Neung Teaumroong; Piyaporn Phansak; Natthiya Buensanteai. 2017. "Salicylic acid-induced accumulation of biochemical components associated with resistance against Xanthomonas oryzae pv. oryzae in rice." Journal of Plant Interactions 12, no. 1: 108-120.

Journal article
Published: 07 April 2016 in New Phytologist
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The legume genus Aeschynomene is notable in the ability of certain semiaquatic species to develop nitrogen-fixing stem nodules. These species are distributed in two clades. In the first clade, all the species are characterized by the use of a unique Nod-independent symbiotic process. In the second clade, the species use a Nod-dependent symbiotic process and some of them display a profuse stem nodulation as exemplified in the African Aeschynomene afraspera. To facilitate the molecular analysis of the symbiotic characteristics of such legumes, we took an integrated molecular and cytogenetic approach to track occurrences of polyploidy events and to analyze their impact on the evolution of the African species of Aeschynomene. Our results revealed two rounds of polyploidy: a paleopolyploid event predating the African group and two neopolyploid speciations, along with significant chromosomal variations. Hence, we found that A. afraspera (8x) has inherited the contrasted genomic properties and the stem-nodulation habit of its parental lineages (4x). This study reveals a comprehensive picture of African Aeschynomene diversification. It notably evidences a history that is distinct from the diploid Nod-independent clade, providing clues for the identification of the specific determinants of the Nod-dependent and Nod-independent symbiotic processes, and for comparative analysis of stem nodulation.

ACS Style

Clémence Chaintreuil; Djamel Gully; Catherine Hervouet; Panlada Tittabutr; Herizo Randriambanona; Spencer C. Brown; Gwilym P. Lewis; Mickael Bourge; Fabienne Cartieaux; Marc Boursot; Heriniaina Ramanankierana; Angélique D'Hont; Neung Teaumroong; Eric Giraud; Jean‐François Arrighi. The evolutionary dynamics of ancient and recent polyploidy in the African semiaquatic species of the legume genus Aeschynomene. New Phytologist 2016, 211, 1077 -1091.

AMA Style

Clémence Chaintreuil, Djamel Gully, Catherine Hervouet, Panlada Tittabutr, Herizo Randriambanona, Spencer C. Brown, Gwilym P. Lewis, Mickael Bourge, Fabienne Cartieaux, Marc Boursot, Heriniaina Ramanankierana, Angélique D'Hont, Neung Teaumroong, Eric Giraud, Jean‐François Arrighi. The evolutionary dynamics of ancient and recent polyploidy in the African semiaquatic species of the legume genus Aeschynomene. New Phytologist. 2016; 211 (3):1077-1091.

Chicago/Turabian Style

Clémence Chaintreuil; Djamel Gully; Catherine Hervouet; Panlada Tittabutr; Herizo Randriambanona; Spencer C. Brown; Gwilym P. Lewis; Mickael Bourge; Fabienne Cartieaux; Marc Boursot; Heriniaina Ramanankierana; Angélique D'Hont; Neung Teaumroong; Eric Giraud; Jean‐François Arrighi. 2016. "The evolutionary dynamics of ancient and recent polyploidy in the African semiaquatic species of the legume genus Aeschynomene." New Phytologist 211, no. 3: 1077-1091.

Book chapter
Published: 14 July 2015 in Biological Nitrogen Fixation
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Delayed nodule senescence may improve nitrogen content in the legume seed and increase the yield of production. This review focuses on using the strategy of modulating ACC deaminase enzyme levels as an indirect way to delay nodule senescence. Nodule senescence occurs by developmental or aging processes, and by stress-induced nodule senescence. Both processes share several characteristics, including the decline in N2 fixation, leghemoglobin, and antioxidant enzyme levels, as well as the oxidative damage of cell components caused by induction of ethylene production inside the cell as a signal to activate other systems involved in the acceleration of nodule senescence. ACC deaminase-containing rhizobia can degrade ACC, a precursor of the ethylene biosynthesis pathway, leading to a reduction of ethylene production inside the cell and indirectly to a delay in nodule senescence. Details of nodule senescence processes and signaling, as well as the role of ACC deaminase in legume–rhizobia nodulation and delay of nodule senescence, are discussed in this review.

ACS Style

Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. The Role of 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Enzyme in Leguminous Nodule Senescence. Biological Nitrogen Fixation 2015, 715 -724.

AMA Style

Panlada Tittabutr, Nantakorn Boonkerd, Neung Teaumroong. The Role of 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Enzyme in Leguminous Nodule Senescence. Biological Nitrogen Fixation. 2015; ():715-724.

Chicago/Turabian Style

Panlada Tittabutr; Nantakorn Boonkerd; Neung Teaumroong. 2015. "The Role of 1-Aminocyclopropane-1-Carboxylate (ACC) Deaminase Enzyme in Leguminous Nodule Senescence." Biological Nitrogen Fixation , no. : 715-724.