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Ethiopia is one of the centers of genetic diversity of sesame (Sesamum indicum L.). The sesame genetic resources present in the country should be explored for local, regional, and international genetic improvement programs to design high-performing and market-preferred varieties. This study’s objective was to determine the extent of genetic variation among 100 diverse cultivated sesame germplasm collections of Ethiopia using phenotypic traits and simple sequence repeat (SSR) markers to select distinct and complementary genotypes for breeding. One hundred sesame entries were field evaluated at two locations in Ethiopia for agro-morphological traits and seed oil content using a 10 × 10 lattice design with two replications. Test genotypes were profiled using 27 polymorphic SSR markers at the Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences. Analysis of variance revealed significant (p ≤ 0.05) entry by environment interaction for plant height, internode length, number of secondary branches, and grain yield. Genotypes such as Hirhir Kebabo Hairless-9, Setit-3, Orofalc ACC-2, Hirhir Humera Sel-6, ABX = 2-01-2, and Setit-1 recorded grain yield of >0.73 ton ha−1 with excellent performance in yield component such as oil yield per hectare. Grain yield had positive and significant (p< 0.01) associations with oil yield (r = 0.99), useful for simultaneous selection for yield improvement in sesame. The SSR markers revealed gene diversity and polymorphic information content values of 0.30 and 0.25, respectively, showing that the tested sesame accessions were genetically diverse. Cluster analysis resolved the accessions into two groups, while population structure analysis revealed four major heterotic groups, thus enabling selection and subsequent crossing to develop breeding populations for cultivar development. Based on phenotypic and genomic divergence, the following superior and complementary genotypes: Hirhir Humera Sel-6, Setit-3, Hirhir Kebabo Hairless Sel-4, Hirhir Nigara 1st Sel-1, Humera-1 and Hirhir Kebabo Early Sel-1 (from cluster II-a), Hirhir kebabo hairless-9, NN-0029(2), NN0068-2 and Bawnji Fiyel Kolet, (from cluster II-b). The selected genotypes will serve as parents in the local breeding program in Ethiopia.
Desawi Teklu; Hussein Shimelis; Abush Tesfaye; Jacob Mashilo; Xiurong Zhang; Yanxin Zhang; Komivi Dossa; Admire Shayanowako. Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum indicum L.) Germplasm Assessed through Phenotypic Traits and Simple Sequence Repeats Markers. Plants 2021, 10, 1129 .
AMA StyleDesawi Teklu, Hussein Shimelis, Abush Tesfaye, Jacob Mashilo, Xiurong Zhang, Yanxin Zhang, Komivi Dossa, Admire Shayanowako. Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum indicum L.) Germplasm Assessed through Phenotypic Traits and Simple Sequence Repeats Markers. Plants. 2021; 10 (6):1129.
Chicago/Turabian StyleDesawi Teklu; Hussein Shimelis; Abush Tesfaye; Jacob Mashilo; Xiurong Zhang; Yanxin Zhang; Komivi Dossa; Admire Shayanowako. 2021. "Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum indicum L.) Germplasm Assessed through Phenotypic Traits and Simple Sequence Repeats Markers." Plants 10, no. 6: 1129.
Background Ethiopia is one of the centres of genetic diversity of sesame (Sesamum indicum L.). The sesame genetic resources present in the country should be explored for local, regional and international sesame improvement programs to design high performing and market preferred varieties. This study's objectives were to determine the extent of genetic variation among 100 diverse cultivated sesame germplasm collections of Ethiopia using phenotypic traits and simple sequence repeat (SSR) markers to select distinct and complementary specimens for breeding. One-hundred sesame entries were field evaluated at two locations in Ethiopia for agro-morphological traits and seed oil content using a 10 × 10 lattice design with two replications. Test specimens were profiled using 27 selected polymorphic SSR markers. Results The analysis of variance revealed significant (P ≤ 0.05) entry by environment interaction for plant height, internode length, number of secondary branches, and seed yield. Genotypes such as Hirhir Kebabo Hairless-9, Setit-3, Orofalc ACC-2, Hirhir Humera Sel-6, ABX=2-01-2, and Setit-1 recorded higher grain yield of > 0.73 ton ha-1 with excellent performance in yield component such as oil and seed yield per hectare. Seed yield had positive and significant (p < 0.01) associations with oil yield (r = 0.99) useful for simultaneous selection for yield improvement in sesame. The SSR markers revealed gene diversity and polymorphic information content of 0.30 and 0.25, respectively, showing that the tested sesame accessions were genetically diverse. Cluster analysis resolved the accessions into two groups, while population structure analysis revealed four major heterotic groups, this enabling selection and subsequent crosses to develop breeding populations for cultivar development.Conclusions Based on phenotypic and genomic divergence, the following complementary specimens were selected: Hirhir Humera Sel-6, Setit-3, Hirhir Kebabo Hairless Sel-4, Hirhir Nigara 1st Sel-1, Humera-1 and Hirhir Kebabo Early Sel-1 (from cluster II-a), Hirhir kebabo hairless-9, NN-0029(2), NN0068-2 and Bawnji Fiyel Kolet, (from cluster II-b). The selected genetic resources are recommended for use in sesame production and breeding programs in Ethiopia.
Desawi Hdru Teklu; Hussein Shimelis; Abush Tesfaye; Jacob Mashilo; Xiurong Zhang; Yanxin Zhang; Komivi Dossa; Admire Shayanowako. Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum Indicum L.) Germplasm Assessed Through Phenotypic Traits and Simple Sequence Repeats Markers. 2021, 1 .
AMA StyleDesawi Hdru Teklu, Hussein Shimelis, Abush Tesfaye, Jacob Mashilo, Xiurong Zhang, Yanxin Zhang, Komivi Dossa, Admire Shayanowako. Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum Indicum L.) Germplasm Assessed Through Phenotypic Traits and Simple Sequence Repeats Markers. . 2021; ():1.
Chicago/Turabian StyleDesawi Hdru Teklu; Hussein Shimelis; Abush Tesfaye; Jacob Mashilo; Xiurong Zhang; Yanxin Zhang; Komivi Dossa; Admire Shayanowako. 2021. "Genetic Variability and Population Structure of Ethiopian Sesame (Sesamum Indicum L.) Germplasm Assessed Through Phenotypic Traits and Simple Sequence Repeats Markers." , no. : 1.
Soil salinity is a major abiotic factor affecting the growth and development of important crops such as sesame (Sesamum indicum L.). To understand the molecular mechanisms of this oilseed crop in response to salt stress, we examined the transcriptome and proteome profiles of two sesame varieties, with contrasting tolerances to salinity. Here, RNA sequencing and quantitative proteomic analyses of 30 samples from salt-tolerant and -sensitive sesame seedlings under salt stress were carried out. These data can be used for differential gene expression and protein accumulation analyses, based on a genetic aberration or phenotypic differences in sesame responses to salt stress. Our dataset provides an extensive resource for understanding the molecular mechanisms underlying the adaptation of sesame to salt stress, and may constitute useful a resource for increasing the tolerance of major crop plants to raised salinity levels in soils.
Yujuan Zhang; Donghua Li; Rong Zhou; Aili Liu; Linhai Wang; Yanxin Zhang; Huihui Gong; Xiurong Zhang; Jun You. A collection of transcriptomic and proteomic datasets from sesame in response to salt stress. Data in Brief 2020, 32, 106096 .
AMA StyleYujuan Zhang, Donghua Li, Rong Zhou, Aili Liu, Linhai Wang, Yanxin Zhang, Huihui Gong, Xiurong Zhang, Jun You. A collection of transcriptomic and proteomic datasets from sesame in response to salt stress. Data in Brief. 2020; 32 ():106096.
Chicago/Turabian StyleYujuan Zhang; Donghua Li; Rong Zhou; Aili Liu; Linhai Wang; Yanxin Zhang; Huihui Gong; Xiurong Zhang; Jun You. 2020. "A collection of transcriptomic and proteomic datasets from sesame in response to salt stress." Data in Brief 32, no. : 106096.
Sesame is one of the most important oilseed crops and has high nutritional value. The yield and quality of sesame are severely affected by high salinity in coastal and semi-arid/arid regions. In this study, the phenotypic, physiological, and proteomic changes induced by salt treatment were analyzed in salt-tolerant (G441) and salt-sensitive (G358) seedlings. Phenotypic and physiological results indicated that G441 had an enhanced capacity to withstand salinity stress compared to G358. Proteomic analysis revealed a strong induction of salt-responsive protein species in sesame, mainly related to catalytic, hydrolase, oxidoreductase, and binding activities. Pathway enrichment analysis showed that more salt-responsive proteins in G441 were involved in tyrosine metabolism, carbon fixation in photosynthetic organisms, carbon metabolism, alpha-linolenic acid metabolism, biosynthesis of amino acids, photosynthesis, and glutathione metabolism. Furthermore, G441 displayed unique differentially accumulated proteins in seedlings functioning as heat shock proteins, abscisic acid receptor PYL2-like, calcium-dependent protein kinases, serine/threonine-protein phosphatases, nucleoredoxin, and antioxidant enzymes. Quantitative real-time PCR analysis revealed that some of the proteins were also regulated by salinity stress at the transcript level. Our findings provide important information on salinity responses in plants and may constitute useful resources for enhancing salinity tolerance in sesame. Our study identified potential biological pathways and salt-responsive protein species related to transducing stress signals and scavenging reactive oxygen species under salt stress. These findings will provide possible participants/pathways/proteins that contribute to salt tolerance and may serve as the basis for improving salinity tolerance in sesame and other plants.
Yujuan Zhang; Mengyuan Wei; Aili Liu; Rong Zhou; Donghua Li; Komivi Dossa; Linhai Wang; Yanxin Zhang; Huihui Gong; Xiurong Zhang; Jun You. Comparative proteomic analysis of two sesame genotypes with contrasting salinity tolerance in response to salt stress. Journal of Proteomics 2019, 201, 73 -83.
AMA StyleYujuan Zhang, Mengyuan Wei, Aili Liu, Rong Zhou, Donghua Li, Komivi Dossa, Linhai Wang, Yanxin Zhang, Huihui Gong, Xiurong Zhang, Jun You. Comparative proteomic analysis of two sesame genotypes with contrasting salinity tolerance in response to salt stress. Journal of Proteomics. 2019; 201 ():73-83.
Chicago/Turabian StyleYujuan Zhang; Mengyuan Wei; Aili Liu; Rong Zhou; Donghua Li; Komivi Dossa; Linhai Wang; Yanxin Zhang; Huihui Gong; Xiurong Zhang; Jun You. 2019. "Comparative proteomic analysis of two sesame genotypes with contrasting salinity tolerance in response to salt stress." Journal of Proteomics 201, no. : 73-83.
Soil salinity is one of the major serious factors that affect agricultural productivity of almost all crops worldwide, including the important oilseed crop sesame. In order to improve salinity resistance in sesame, it is crucial to understand the molecular mechanisms underlying the adaptive response to salinity stress. In the present study, two contrasting sesame genotypes differing in salt tolerance were used to decipher the adaptive responses to salt stress based on morphological, transcriptome and metabolome characterizations. Morphological results indicated that under salt stress, the salt-tolerant (ST) genotype has enhanced capacity to withstand salinity stress, higher seed germination rate and plant survival rate, as well as better growth rate than the salt-sensitive genotype. Transcriptome analysis revealed strongly induced salt-responsive genes in sesame mainly related to amino acid metabolism, carbohydrate metabolism, biosynthesis of secondary metabolites, plant hormone signal transduction, and oxidation-reduction process. Especially, several pathways were preferably enriched with differentially expressed genes in ST genotype, including alanine, aspartate and glutamate metabolism, carotenoid biosynthesis, galactose metabolism, glycolysis/gluconeogenesis, glyoxylate and dicarboxylate metabolism, porphyrin and chlorophyll metabolism. Metabolome profiling under salt stress showed a higher accumulation degree of metabolites involved in stress tolerance in ST, and further highlighted that the amino acid metabolism, and sucrose and raffinose family oligosaccharides metabolism were enhanced in ST. These findings suggest that the candidate genes and metabolites involved in crucial biological pathways may regulate salt tolerance of sesame, and increase our understanding of the molecular mechanisms underlying the adaptation of sesame to salt stress.
Yujuan Zhang; Donghua Li; Rong Zhou; Xiao Wang; Komivi Dossa; Linhai Wang; Yanxin Zhang; Jingyin Yu; Huihui Gong; Xiurong Zhang; Jun You. Transcriptome and metabolome analyses of two contrasting sesame genotypes reveal the crucial biological pathways involved in rapid adaptive response to salt stress. BMC Plant Biology 2019, 19, 1 -14.
AMA StyleYujuan Zhang, Donghua Li, Rong Zhou, Xiao Wang, Komivi Dossa, Linhai Wang, Yanxin Zhang, Jingyin Yu, Huihui Gong, Xiurong Zhang, Jun You. Transcriptome and metabolome analyses of two contrasting sesame genotypes reveal the crucial biological pathways involved in rapid adaptive response to salt stress. BMC Plant Biology. 2019; 19 (1):1-14.
Chicago/Turabian StyleYujuan Zhang; Donghua Li; Rong Zhou; Xiao Wang; Komivi Dossa; Linhai Wang; Yanxin Zhang; Jingyin Yu; Huihui Gong; Xiurong Zhang; Jun You. 2019. "Transcriptome and metabolome analyses of two contrasting sesame genotypes reveal the crucial biological pathways involved in rapid adaptive response to salt stress." BMC Plant Biology 19, no. 1: 1-14.
As an important oil crop, growth habit of sesame (Sesamum indicum L.) is naturally indeterminate, which brings about asynchronous maturity of capsules and causes loss of yield. The genetic basis of determinate growth habit in sesame was investigated by classical genetic analysis through multiple populations, results revealed that it was controlled by an unique recessive gene. The genotyping by sequencing (GBS) approach was employed for high-throughput SNP identification and genotyping in the F2 population, then a high density bin map was constructed, the map was 1086.403 cM in length, which consisted of 1184 bins (13,679 SNPs), with an average of 0.918 cM between adjacent bins. Based on bin mapping in conjunction with SSR markers analysis in targeted region, the novel sesame determinacy gene was mapped on LG09 in a genome region of 41 kb. This study dissected genetic basis of determinate growth habit in sesame, constructed a new high-density bin map and mapped a novel determinacy gene. Results of this study demonstrate that we employed an optimized approach to get fine-accuracy, high-resolution and high-efficiency mapping result in sesame. The findings provided important foundation for sesame determinacy gene cloning and were expected to be applied in breeding for cultivars suited to mechanized production.
Yanxin Zhang; Linhai Wang; Yuan Gao; Donghua Li; Jingyin Yu; Rong Zhou; Xiurong Zhang. Genetic dissection and fine mapping of a novel dt gene associated with determinate growth habit in sesame. BMC Genetics 2018, 19, 38 .
AMA StyleYanxin Zhang, Linhai Wang, Yuan Gao, Donghua Li, Jingyin Yu, Rong Zhou, Xiurong Zhang. Genetic dissection and fine mapping of a novel dt gene associated with determinate growth habit in sesame. BMC Genetics. 2018; 19 (1):38.
Chicago/Turabian StyleYanxin Zhang; Linhai Wang; Yuan Gao; Donghua Li; Jingyin Yu; Rong Zhou; Xiurong Zhang. 2018. "Genetic dissection and fine mapping of a novel dt gene associated with determinate growth habit in sesame." BMC Genetics 19, no. 1: 38.
Komivi Dossa; Xin Wei; Marème Niang; Pan Liu; Yanxin Zhang; Linhai Wang; Boshou Liao; Ndiaga Cissé; Xiurong Zhang; Diaga Diouf. Near-infrared reflectance spectroscopy reveals wide variation in major components of sesame seeds from Africa and Asia. The Crop Journal 2018, 6, 202 -206.
AMA StyleKomivi Dossa, Xin Wei, Marème Niang, Pan Liu, Yanxin Zhang, Linhai Wang, Boshou Liao, Ndiaga Cissé, Xiurong Zhang, Diaga Diouf. Near-infrared reflectance spectroscopy reveals wide variation in major components of sesame seeds from Africa and Asia. The Crop Journal. 2018; 6 (2):202-206.
Chicago/Turabian StyleKomivi Dossa; Xin Wei; Marème Niang; Pan Liu; Yanxin Zhang; Linhai Wang; Boshou Liao; Ndiaga Cissé; Xiurong Zhang; Diaga Diouf. 2018. "Near-infrared reflectance spectroscopy reveals wide variation in major components of sesame seeds from Africa and Asia." The Crop Journal 6, no. 2: 202-206.
Sesame has great potential as an industrial crop but its production is challenged by drought and salt stresses. To unravel the genetic variants leading to salinity and drought tolerances at the germination stage, genome-wide association studies of stress tolerance indexes related to NaCl-salt and polyethylene glycol-drought induced stresses were performed with a diversity panel of 490 sesame accessions. An extensive variation was observed for drought and salt responses in the population and most of the accessions were moderately tolerant to both stresses. A total of 132 and 120 significant Single Nucleotide Polymorphisms (SNPs) resolved to nine and 15 Quantitative trait loci (QTLs) were detected for drought and salt stresses, respectively. Only two common QTLs for drought and salt responses were found located on linkage groups 5 and 7, respectively. This indicates that the genetic bases for drought and salt responses in sesame are different. A total of 13 and 27 potential candidate genes were uncovered for drought and salt tolerance indexes, respectively, encoding transcription factors, antioxidative enzymes, osmoprotectants and involved in hormonal biosynthesis, signal transduction or ion sequestration. The identified SNPs and potential candidate genes represent valuable resources for future functional characterization towards the enhancement of sesame cultivars for drought and salt tolerances.
Donghua Li; Komivi Dossa; Yanxin Zhang; Xin Wei; Linhai Wang; Yujuan Zhang; Aili Liu; Rong Zhou; Xiurong Zhang. GWAS Uncovers Differential Genetic Bases for Drought and Salt Tolerances in Sesame at the Germination Stage. Genes 2018, 9, 87 .
AMA StyleDonghua Li, Komivi Dossa, Yanxin Zhang, Xin Wei, Linhai Wang, Yujuan Zhang, Aili Liu, Rong Zhou, Xiurong Zhang. GWAS Uncovers Differential Genetic Bases for Drought and Salt Tolerances in Sesame at the Germination Stage. Genes. 2018; 9 (2):87.
Chicago/Turabian StyleDonghua Li; Komivi Dossa; Yanxin Zhang; Xin Wei; Linhai Wang; Yujuan Zhang; Aili Liu; Rong Zhou; Xiurong Zhang. 2018. "GWAS Uncovers Differential Genetic Bases for Drought and Salt Tolerances in Sesame at the Germination Stage." Genes 9, no. 2: 87.
Sesame (Sesamum indicum L.) is one of the world’s most important oil crops. However, it is susceptible to abiotic stresses in general, and to waterlogging and drought stresses in particular. The molecular mechanisms of abiotic stress tolerance in sesame have not yet been elucidated. The WRKY domain transcription factors play significant roles in plant growth, development, and responses to stresses. However, little is known about the number, location, structure, molecular phylogenetics, and expression of the WRKY genes in sesame. We performed a comprehensive study of the WRKY gene family in sesame and identified 71 SiWRKYs. In total, 65 of these genes were mapped to 15 linkage groups within the sesame genome. A phylogenetic analysis was performed using a related species (Arabidopsis thaliana) to investigate the evolution of the sesame WRKY genes. Tissue expression profiles of the WRKY genes demonstrated that six SiWRKY genes were highly expressed in all organs, suggesting that these genes may be important for plant growth and organ development in sesame. Analysis of the SiWRKY gene expression patterns revealed that 33 and 26 SiWRKYs respond strongly to waterlogging and drought stresses, respectively. Changes in the expression of 12 SiWRKY genes were observed at different times after the waterlogging and drought treatments had begun, demonstrating that sesame gene expression patterns vary in response to abiotic stresses. In this study, we analyzed the WRKY family of transcription factors encoded by the sesame genome. Insight was gained into the classification, evolution, and function of the SiWRKY genes, revealing their putative roles in a variety of tissues. Responses to abiotic stresses in different sesame cultivars were also investigated. The results of our study provide a better understanding of the structures and functions of sesame WRKY genes and suggest that manipulating these WRKYs could enhance resistance to waterlogging and drought.
Wang Linhai; Pan Liu; Jingyin Yu; Linhai Wang; Komivi Dossa; Yanxin Zhang; Rong Zhou; Xin Wei; Xiurong Zhang. Genome-wide analysis of WRKY gene family in the sesame genome and identification of the WRKY genes involved in responses to abiotic stresses. BMC Plant Biology 2017, 17, 1 -19.
AMA StyleWang Linhai, Pan Liu, Jingyin Yu, Linhai Wang, Komivi Dossa, Yanxin Zhang, Rong Zhou, Xin Wei, Xiurong Zhang. Genome-wide analysis of WRKY gene family in the sesame genome and identification of the WRKY genes involved in responses to abiotic stresses. BMC Plant Biology. 2017; 17 (1):1-19.
Chicago/Turabian StyleWang Linhai; Pan Liu; Jingyin Yu; Linhai Wang; Komivi Dossa; Yanxin Zhang; Rong Zhou; Xin Wei; Xiurong Zhang. 2017. "Genome-wide analysis of WRKY gene family in the sesame genome and identification of the WRKY genes involved in responses to abiotic stresses." BMC Plant Biology 17, no. 1: 1-19.
Sesame is an important oil crop widely cultivated in Africa and Asia. Understanding the genetic diversity of accessions from these continents is critical to designing breeding methods and for additional collection of sesame germplasm. To determine the genetic diversity in relation to geographical regions, 96 sesame accessions collected from 22 countries distributed over six geographic regions in Africa and Asia were genotyped using 33 polymorphic SSR markers. Large genetic variability was found within the germplasm collection. The total number of alleles was 137, averaging 4.15 alleles per locus. The accessions from Asia displayed more diversity than those from Africa. Accessions from Southern Asia (SAs), Eastern Asia (EAs), and Western Africa (WAf) were highly diversified, while those from Western Asia (WAs), Northern Africa (NAf), and Southeastern Africa (SAf) had the lowest diversity. The analysis of molecular variance revealed that more than 44% of the genetic variance was due to diversity among geographic regions. Five subpopulations, including three in Asia and two in Africa, were cross-identified through phylogenetic, PCA, and STRUCTURE analyses. Most accessions clustered in the same population based on their geographical origins. Our results provide technical guidance for efficient management of sesame genetic resources in breeding programs and further collection of sesame germplasm from these different regions.
Komivi Dossa; Xin Wei; Yanxin Zhang; Daniel Fonceka; Wenjuan Yang; Diaga Diouf; Boshou Liao; Ndiaga Cisse; Xiurong Zhang. Analysis of Genetic Diversity and Population Structure of Sesame Accessions from Africa and Asia as Major Centers of Its Cultivation. Genes 2016, 7, 14 .
AMA StyleKomivi Dossa, Xin Wei, Yanxin Zhang, Daniel Fonceka, Wenjuan Yang, Diaga Diouf, Boshou Liao, Ndiaga Cisse, Xiurong Zhang. Analysis of Genetic Diversity and Population Structure of Sesame Accessions from Africa and Asia as Major Centers of Its Cultivation. Genes. 2016; 7 (4):14.
Chicago/Turabian StyleKomivi Dossa; Xin Wei; Yanxin Zhang; Daniel Fonceka; Wenjuan Yang; Diaga Diouf; Boshou Liao; Ndiaga Cisse; Xiurong Zhang. 2016. "Analysis of Genetic Diversity and Population Structure of Sesame Accessions from Africa and Asia as Major Centers of Its Cultivation." Genes 7, no. 4: 14.
To improve efficiency in sesame (Sesamum indicum L.) breeding, it is important to understand the genetic basis and relatedness of advanced varieties developed during the past decades and to identify molecular markers associated with quantitative traits of agronomic importance. Seed yield and traits that contribute to yield are strongly influenced by traits related to plant height, but little is known about the genetic basis of height-related traits in sesame. A sesame association panel was phenotyped in multienvironment trials and fingerprinted with 44 markers to conduct genetic diversity analysis and association mapping of four height-related traits and six yield-related traits. Population structure analyses revealed two subgroups within the panel. The Q model performed better in terms of controlling false associations than the mixed models and identified a total of 92 marker associations with these 10 traits in three environments at P < 0.01. Eleven markers were identified as linked to three height-related traits and three yield-related traits in more than one environment. Further, three markers (ID24, SSI259, and ZZM452) were simultaneously associated with multiple traits in different environments with stable and pleiotropic effects. In each of the three environments, ID71 was stably associated with the number of seeds per capsule and ZZM452 was associated with thousand-seed weight. These results suggest that the relatively abundant diversity in this sesame association panel together with the power of the Q model are useful for association analysis of agronomic traits in sesame. The associations of markers with these traits will benefit marker-assisted selection in sesame after further validation. Copyright © 2015. . Copyright © by the Crop Science Society of America, Inc.
Wenliang Wei; Yanxin Zhang; Linhai Wang; Donghua Li; Yuan Gao; Xiurong Zhang. Genetic Diversity, Population Structure, and Association Mapping of 10 Agronomic Traits in Sesame. Crop Science 2016, 56, 331 -343.
AMA StyleWenliang Wei, Yanxin Zhang, Linhai Wang, Donghua Li, Yuan Gao, Xiurong Zhang. Genetic Diversity, Population Structure, and Association Mapping of 10 Agronomic Traits in Sesame. Crop Science. 2016; 56 (1):331-343.
Chicago/Turabian StyleWenliang Wei; Yanxin Zhang; Linhai Wang; Donghua Li; Yuan Gao; Xiurong Zhang. 2016. "Genetic Diversity, Population Structure, and Association Mapping of 10 Agronomic Traits in Sesame." Crop Science 56, no. 1: 331-343.
Waterlogging threatens severely to the sesame production in China, India and Burma, which are the top three sesame producers of the world. It was of great importance to explore the dynamics and mechanisms of action of anaerobic proteins and antioxidant enzymes together with the morph-anatomic adaptions in waterlogged sesame. The sesame accessions ZZM2541 and Ezhi-2 respond to waterlogging in considerably different performance. The stress induced wilting and leaf chlorosis in both accessions, but symptom occurred earlier in the susceptive Ezhi-2. In the more tolerant ZZM2541, adventitious roots formed above the flooding level, and plentiful of aerenchyma developed in the root and stem. However, it was discovered no apparent intercellular spaces existing in the spongy mesophyll in leaves of both accessions. The activities of ADH, PDC and LDH increased in roots of both accessions after suffering of the stress. The increase of ADH and PDC activity was more pronounced in ZZM2541, while a significantly higher LDH activity appeared in Ezhi-2. All the activities of SOD, APX and CAT were higher in the leaves of ZZM2541 than in Ezhi-2, and the leaves of Ezhi-2 showed a higher content of MDA throughout the duration of waterlogging. It was suggested that the tolerance to waterlogging of ZZM2541 appears to depend on a combination of metabolic and morpho-anatomical adaptions.
Wenliang Wei; Donghua Li; Linhai Wang; Xia Ding; Yanxin Zhang; Yuan Gao; Xiurong Zhang. Morpho-anatomical and physiological responses to waterlogging of sesame (Sesamum indicum L.). Plant Science 2013, 208, 102 -111.
AMA StyleWenliang Wei, Donghua Li, Linhai Wang, Xia Ding, Yanxin Zhang, Yuan Gao, Xiurong Zhang. Morpho-anatomical and physiological responses to waterlogging of sesame (Sesamum indicum L.). Plant Science. 2013; 208 ():102-111.
Chicago/Turabian StyleWenliang Wei; Donghua Li; Linhai Wang; Xia Ding; Yanxin Zhang; Yuan Gao; Xiurong Zhang. 2013. "Morpho-anatomical and physiological responses to waterlogging of sesame (Sesamum indicum L.)." Plant Science 208, no. : 102-111.
Dong-Hua Li; Wen-Ping Liu; Yan-Xin Zhang; Lin-Hai Wang; Wen-Liang Wei; Yuan Gao; Xia Ding; Lei Wang; Xiu-Rong Zhang. Identification Method of Drought Tolerance and Association Mapping for Sesame (Sesamum indicumL.). Acta Agronomica Sinica 2013, 39, 1 .
AMA StyleDong-Hua Li, Wen-Ping Liu, Yan-Xin Zhang, Lin-Hai Wang, Wen-Liang Wei, Yuan Gao, Xia Ding, Lei Wang, Xiu-Rong Zhang. Identification Method of Drought Tolerance and Association Mapping for Sesame (Sesamum indicumL.). Acta Agronomica Sinica. 2013; 39 (8):1.
Chicago/Turabian StyleDong-Hua Li; Wen-Ping Liu; Yan-Xin Zhang; Lin-Hai Wang; Wen-Liang Wei; Yuan Gao; Xia Ding; Lei Wang; Xiu-Rong Zhang. 2013. "Identification Method of Drought Tolerance and Association Mapping for Sesame (Sesamum indicumL.)." Acta Agronomica Sinica 39, no. 8: 1.
The genetics and molecular biology of sesame has only recently begun to be studied even though sesame is an important oil seed crop. A high-density genetic map for sesame has not been published yet due to a lack of sufficient molecular markers. Specific length amplified fragment sequencing (SLAF-seq) is a recently developed high-resolution strategy for large-scale de novo SNP discovery and genotyping. SLAF-seq was employed in this study to obtain sufficient markers to construct a high-density genetic map for sesame.
Yanxin Zhang; Linhai Wang; Huaigen Xin; Donghua Li; Chouxian Ma; Xia Ding; Weiguo Hong; Xiurong Zhang. Construction of a high-density genetic map for sesame based on large scale marker development by specific length amplified fragment (SLAF) sequencing. BMC Plant Biology 2013, 13, 141 -141.
AMA StyleYanxin Zhang, Linhai Wang, Huaigen Xin, Donghua Li, Chouxian Ma, Xia Ding, Weiguo Hong, Xiurong Zhang. Construction of a high-density genetic map for sesame based on large scale marker development by specific length amplified fragment (SLAF) sequencing. BMC Plant Biology. 2013; 13 (1):141-141.
Chicago/Turabian StyleYanxin Zhang; Linhai Wang; Huaigen Xin; Donghua Li; Chouxian Ma; Xia Ding; Weiguo Hong; Xiurong Zhang. 2013. "Construction of a high-density genetic map for sesame based on large scale marker development by specific length amplified fragment (SLAF) sequencing." BMC Plant Biology 13, no. 1: 141-141.
Polymorphic simple sequence repeat markers from transcript sequences (cDNA-simple sequence repeat [SSR]) were developed for the edible oil crop Sesamum indicum to facilitate the genetic study of this species. • We found 7702 SSR loci in the 60960 unigenes, and 1550 primer pairs were designed and synthesized. In total, 59 primer pairs showed polymorphism within 36 individuals; the number of alleles per locus ranged from two to four, and the expected and observed heterozygosity ranged from 0.05 to 0.74 and 0 to 0.30, respectively. • These polymorphic markers will greatly facilitate studies of the genetic structure of S. indicum populations as well as the identification and conservation of the species.
Linhai Wang; Yanxin Zhang; Xiaoqiong Qi; Yuan Gao; Xiurong Zhang. Development and characterization of 59 polymorphic cDNA-SSR markers for the edible oil crop Sesamum indicum (Pedaliaceae). American Journal of Botany 2012, 99, e394 -e398.
AMA StyleLinhai Wang, Yanxin Zhang, Xiaoqiong Qi, Yuan Gao, Xiurong Zhang. Development and characterization of 59 polymorphic cDNA-SSR markers for the edible oil crop Sesamum indicum (Pedaliaceae). American Journal of Botany. 2012; 99 (10):e394-e398.
Chicago/Turabian StyleLinhai Wang; Yanxin Zhang; Xiaoqiong Qi; Yuan Gao; Xiurong Zhang. 2012. "Development and characterization of 59 polymorphic cDNA-SSR markers for the edible oil crop Sesamum indicum (Pedaliaceae)." American Journal of Botany 99, no. 10: e394-e398.
Sesame lignans, including mainly sesamin and sesamolin, has been reported to have multiple functions beneficial to health. This study analyzed sesamin and sesamolin contents by HPLC in 215 sesame lines from a core collection in China. The results showed the core sesame germplasm in China has a broad variation from 2.49 to 18.01 mg/g with average 8.54 mg/g in total of sesamin and sesamolin. On average, sesamin contents in the lines with a white seed coat color were significantly higher than in those samples with brown, yellow and black colors (P < 0.01). The lines with a black seed coat had the highest coefficient of variation followed by those with brown, yellow and white seed coats. The correlation coefficient between sesamin and sesamolin in the sesames with different seed coat colors ranked as white (R = 0.23) < yellow (R = 0.44) < brown (R = 0.72) < black (R = 0.77). The results of this study provide valuable background information on sesame germplasm in China and identified potential genotypes for breeding high sesamin or sesamolin cultivars.
Linhai Wang; Yanxin Zhang; Peiwu Li; Xuefang Wang; Wen Zhang; Wenliang Wei; Xiurong Zhang. HPLC Analysis of Seed Sesamin and Sesamolin Variation in a Sesame Germplasm Collection in China. Journal of the American Oil Chemists' Society 2012, 89, 1011 -1020.
AMA StyleLinhai Wang, Yanxin Zhang, Peiwu Li, Xuefang Wang, Wen Zhang, Wenliang Wei, Xiurong Zhang. HPLC Analysis of Seed Sesamin and Sesamolin Variation in a Sesame Germplasm Collection in China. Journal of the American Oil Chemists' Society. 2012; 89 (6):1011-1020.
Chicago/Turabian StyleLinhai Wang; Yanxin Zhang; Peiwu Li; Xuefang Wang; Wen Zhang; Wenliang Wei; Xiurong Zhang. 2012. "HPLC Analysis of Seed Sesamin and Sesamolin Variation in a Sesame Germplasm Collection in China." Journal of the American Oil Chemists' Society 89, no. 6: 1011-1020.
Yan-Xin Zhang; Jian Sun; Xiu-Rong Zhang; Lin-Hai Wang; Zhuo Che. Analysis on Genetic Diversity and Genetic Basis of the Main Sesame Cultivars Released in China. Agricultural Sciences in China 2011, 10, 509 -518.
AMA StyleYan-Xin Zhang, Jian Sun, Xiu-Rong Zhang, Lin-Hai Wang, Zhuo Che. Analysis on Genetic Diversity and Genetic Basis of the Main Sesame Cultivars Released in China. Agricultural Sciences in China. 2011; 10 (4):509-518.
Chicago/Turabian StyleYan-Xin Zhang; Jian Sun; Xiu-Rong Zhang; Lin-Hai Wang; Zhuo Che. 2011. "Analysis on Genetic Diversity and Genetic Basis of the Main Sesame Cultivars Released in China." Agricultural Sciences in China 10, no. 4: 509-518.
Jian Sun; Xiurong Zhang; Yanxin Zhang; Linhai Wang; Bo Huang. Effects of Waterlogging on Leaf Protective Enzyme Activities and Seed Yield of Sesame at Different Growth Stages*. Chinese Journal of Appplied Environmental Biology 2009, 2009, 790 -795.
AMA StyleJian Sun, Xiurong Zhang, Yanxin Zhang, Linhai Wang, Bo Huang. Effects of Waterlogging on Leaf Protective Enzyme Activities and Seed Yield of Sesame at Different Growth Stages*. Chinese Journal of Appplied Environmental Biology. 2009; 2009 (6):790-795.
Chicago/Turabian StyleJian Sun; Xiurong Zhang; Yanxin Zhang; Linhai Wang; Bo Huang. 2009. "Effects of Waterlogging on Leaf Protective Enzyme Activities and Seed Yield of Sesame at Different Growth Stages*." Chinese Journal of Appplied Environmental Biology 2009, no. 6: 790-795.
Zhuo Che; Yan-Xin Zhang; Jian Sun; Xiu-Rong Zhang; Xun-Wu Shang; Hua-Jun Wang. Genetic Diversity Analysis of Black Sesame (Sesamum indicum DC) Core Collection of China Using SRAP Markers. Acta Agronomica Sinica 2009, 35, 1936 -1941.
AMA StyleZhuo Che, Yan-Xin Zhang, Jian Sun, Xiu-Rong Zhang, Xun-Wu Shang, Hua-Jun Wang. Genetic Diversity Analysis of Black Sesame (Sesamum indicum DC) Core Collection of China Using SRAP Markers. Acta Agronomica Sinica. 2009; 35 (10):1936-1941.
Chicago/Turabian StyleZhuo Che; Yan-Xin Zhang; Jian Sun; Xiu-Rong Zhang; Xun-Wu Shang; Hua-Jun Wang. 2009. "Genetic Diversity Analysis of Black Sesame (Sesamum indicum DC) Core Collection of China Using SRAP Markers." Acta Agronomica Sinica 35, no. 10: 1936-1941.