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Ecological stoichiometry provides a framework for the balance and flow of elements between organisms and ecosystems. Elemental phenotypes have an important influence on the environmental adaptation and ecological evolution of plants. There have been few reports on inter- and intra-specific phenotypic variations of ecological stoichiometric traits for congeneric species in a mixed forest although such variations are well- documented at the species level at global, regional and local scales. In this study, total carbon (TC), nitrogen (TN), phosphorus (TP) and potassium (TK) were measured in leaves and the elemental phenotypes were statistically analyzed in four species of oaks—Quercus fabri, Q. serrata var. glandulifera, Q. acutissima and Q. variabilis—in a mixed-oak secondary forest in Yushan, Jiangsu, China. The average element concentrations in the four oak species were not relatively higher than previously reported for oaks from world and Chinese flora. Ecological stoichiometry traits were correlated with tree height and diameter at breast height, indicating that phosphorous and potassium were positively correlated with tree size, while carbon was negatively correlated, especially the relationship between oak growth and total carbon or total phosphorus was obvious, and the study concluded that this was because plant growth depended on phosphorus storage and had opposite effects on leaf carbon accumulation. Based on tree plasticity index and the coefficient of variation, there was medium variation in element concentrations. The plasticity index of total carbon levels was the lowest, and that of potassium the highest. Principal component analysis and cluster analysis showed that the intra-specific variation among the four oak species was higher than inter-specific variation. From the perspective of nutrient supply and ecological adaptation, this study creates a foundation for the management of secondary oak forest stands.
Yueyao Feng; Xuan Li; Biyao Zhou; Rong Hu; Huanchao Zhang; Jiading Yang; Yanming Fang. Inter- and intra-specific phenotypic variation of ecological stoichiometric traits in a mixed-oak secondary forest in China. Journal of Forestry Research 2021, 1 -15.
AMA StyleYueyao Feng, Xuan Li, Biyao Zhou, Rong Hu, Huanchao Zhang, Jiading Yang, Yanming Fang. Inter- and intra-specific phenotypic variation of ecological stoichiometric traits in a mixed-oak secondary forest in China. Journal of Forestry Research. 2021; ():1-15.
Chicago/Turabian StyleYueyao Feng; Xuan Li; Biyao Zhou; Rong Hu; Huanchao Zhang; Jiading Yang; Yanming Fang. 2021. "Inter- and intra-specific phenotypic variation of ecological stoichiometric traits in a mixed-oak secondary forest in China." Journal of Forestry Research , no. : 1-15.
Naturally growing mosses have been successfully used as biomonitors of atmospheric heavy metal (HM) deposition. In recent years, with rapid economic development, environmental pollution in Yancheng, a coastal city in central Jiangsu Province, China, has become increasingly serious. However, to date, there have been no reports on atmospheric HM deposition in Yancheng. In this study, we investigated the HM concentrations and Pb isotopes in the moss Haplocladium microphyllum (Hedw.) Broth. from Yancheng and analyzed their main sources. The concentrations of HM in mosses from Yancheng were higher than those recorded in other studies of mosses from HM smelting regions and pollution-free areas of Eurasia and Alaska. The contamination factor value suggested that the pollution level of Cd was the highest. The pollution load index indicated that the studied area was severely contaminated with Cd, Cr, Pb, Zn, V, Ni, and Cu. Positive matrix factorization was employed to identify the contamination sources of HM and apportion their source contributions in mosses. The contributions of the natural source, together with manufacturing and construction, metal processing and chemical industries, traffic emissions and fuel burning in industrial activities, and agricultural activities, accounted for 53%, 33%, 12%, and 2%, respectively. The Pb isotopic ratios in the mosses (1.125–1.164 for 206Pb/207Pb, 2.059–2.148 for 208Pb/206Pb) further proved that metal processing and traffic emissions were the main sources of Pb contamination. These results are useful for developing various effective measures to prevent and reduce atmospheric HM deposition in Yancheng.
Xiaoli Zhou; Rong Hu; Yanming Fang. Source and spatial distribution of airborne heavy metal deposition studied using mosses as biomonitors in Yancheng, China. Environmental Science and Pollution Research 2021, 28, 30758 -30773.
AMA StyleXiaoli Zhou, Rong Hu, Yanming Fang. Source and spatial distribution of airborne heavy metal deposition studied using mosses as biomonitors in Yancheng, China. Environmental Science and Pollution Research. 2021; 28 (24):30758-30773.
Chicago/Turabian StyleXiaoli Zhou; Rong Hu; Yanming Fang. 2021. "Source and spatial distribution of airborne heavy metal deposition studied using mosses as biomonitors in Yancheng, China." Environmental Science and Pollution Research 28, no. 24: 30758-30773.
The Quercus species serve as a powerful model for studying introgression in relation to species boundaries and adaptive processes. Coexistence of distant relatives, or lack of coexistence of closely relative oak species, introgression may play a role. In the current study, four closely related oak species were found in Zijinshan, China. We generated a comprehensive genome size (GS) database for 120 individuals of four species using flow cytometry‐based approaches. We examined GS variability within and among the species and hybridization events among the four species. The mean GSs of Q. acutissima, Q. variabilis, Q. fabri, and Q. serrata var. brevipetiolata were estimated to be 1.87, 1.92, 1.97, and 1.97 pg, respectively. The intraspecific and interspecific variations of GS observed among the four oak species indicated adaptation to the environment. Hybridization occurred both within and between the sections. A hybrid offspring was produced from Q. fabri and Q. variabilis, which belonged to different sections. The GS evolutionary pattern for hybrid species was expansion. Hybridization between the sections may be affected by habitat disturbance. This study increases our understanding of the evolution of GS in Quercus and will help establish guidelines for the ecological protection of oak trees.
Gaoming Wei; Xuan Li; Yanming Fang. Sympatric genome size variation and hybridization of four oak species as determined by flow cytometry genome size variation and hybridization. Ecology and Evolution 2021, 11, 1729 -1740.
AMA StyleGaoming Wei, Xuan Li, Yanming Fang. Sympatric genome size variation and hybridization of four oak species as determined by flow cytometry genome size variation and hybridization. Ecology and Evolution. 2021; 11 (4):1729-1740.
Chicago/Turabian StyleGaoming Wei; Xuan Li; Yanming Fang. 2021. "Sympatric genome size variation and hybridization of four oak species as determined by flow cytometry genome size variation and hybridization." Ecology and Evolution 11, no. 4: 1729-1740.
Corylopsis multiflora Hance var. nivea Chang is a variety of the species C. multiflora in the family Hamamelidaceae and is classed as critically endangered (CR) in the Red List of China Higher Plants. The complete chloroplast genome sequence of this taxon (as C. multiflora var. nivea in GeneBank, accession number: MW043717) was reported in this study. The genome size is 158,993 bp in length, consisting of a pair of inverted repeat regions (IR, 26,213bp), large single copy (LSC, 87,895bp) and small single copy (SSC, 18,672bp). A total of 133 genes were annotated that included 87 protein coding genes (PCGs), 37 transfer RNA (tRNAs), and 8 ribosome RNA (rRNAs) and 1 pseudo gene. GC content were 38.01%. The Bayesian phylogeny tree showed that C. multiflora var. nivea formed a monophyletic branch with Corylopis coreana and Corylopsis spicata.
Ting Lv; Shuifei Chen; Rong Zhao; Ningjie Wang; Yanming Fang. The complete chloroplast genome sequence of Corylopsis multiflora Hance var. nivea Chang. Mitochondrial DNA Part B 2021, 6, 271 -273.
AMA StyleTing Lv, Shuifei Chen, Rong Zhao, Ningjie Wang, Yanming Fang. The complete chloroplast genome sequence of Corylopsis multiflora Hance var. nivea Chang. Mitochondrial DNA Part B. 2021; 6 (1):271-273.
Chicago/Turabian StyleTing Lv; Shuifei Chen; Rong Zhao; Ningjie Wang; Yanming Fang. 2021. "The complete chloroplast genome sequence of Corylopsis multiflora Hance var. nivea Chang." Mitochondrial DNA Part B 6, no. 1: 271-273.
Lu Wang; Na He; Yao Li; Yanming Fang; Feilong Zhang. The complete chloroplast genome sequence of Toxicodendron succedaneum (Anacardiaceae). Mitochondrial DNA Part B 2020, 5, 1956 -1957.
AMA StyleLu Wang, Na He, Yao Li, Yanming Fang, Feilong Zhang. The complete chloroplast genome sequence of Toxicodendron succedaneum (Anacardiaceae). Mitochondrial DNA Part B. 2020; 5 (2):1956-1957.
Chicago/Turabian StyleLu Wang; Na He; Yao Li; Yanming Fang; Feilong Zhang. 2020. "The complete chloroplast genome sequence of Toxicodendron succedaneum (Anacardiaceae)." Mitochondrial DNA Part B 5, no. 2: 1956-1957.
Toxicodendron sylvestre (Siebold & Zucc.) Kuntze is a deciduous tree species in the poison ivy genus of the sumac family. In this study, we sequenced and analyzed the complete chloroplast (cp) genome of T. sylvestre. The circular genome is 159,600 bp in length, including two copies of inverted repeat (IR) regions of 26,465 bp, one large single-copy (LSC) region of 87,630 bp, and one small single-copy (SSC) region of 19,040 bp. It encodes a total of 113 unique genes, including 80 protein-coding genes, 29 tRNA genes, and 4 rRNA genes. Phylogenetic analysis based on 17 cp genome sequences revealed that T. sylvestre was more closely related to T. succedaneum.
Na He; Lu Wang; Yao Li; Yanming Fang; Feilong Zhang. The complete chloroplast genome sequence of Toxicodendron sylvestre (Anacardiaceae). Mitochondrial DNA Part B 2020, 5, 2008 -2009.
AMA StyleNa He, Lu Wang, Yao Li, Yanming Fang, Feilong Zhang. The complete chloroplast genome sequence of Toxicodendron sylvestre (Anacardiaceae). Mitochondrial DNA Part B. 2020; 5 (2):2008-2009.
Chicago/Turabian StyleNa He; Lu Wang; Yao Li; Yanming Fang; Feilong Zhang. 2020. "The complete chloroplast genome sequence of Toxicodendron sylvestre (Anacardiaceae)." Mitochondrial DNA Part B 5, no. 2: 2008-2009.
Yao Li; Lu Wang; Qingliang Liu; Yanming Fang. The complete plastid genome sequence of Quercus ciliaris (Fagaceae). Mitochondrial DNA Part B 2020, 5, 1954 -1955.
AMA StyleYao Li, Lu Wang, Qingliang Liu, Yanming Fang. The complete plastid genome sequence of Quercus ciliaris (Fagaceae). Mitochondrial DNA Part B. 2020; 5 (2):1954-1955.
Chicago/Turabian StyleYao Li; Lu Wang; Qingliang Liu; Yanming Fang. 2020. "The complete plastid genome sequence of Quercus ciliaris (Fagaceae)." Mitochondrial DNA Part B 5, no. 2: 1954-1955.
Yao Li; Lu Wang; Yun Zhao; Yanming Fang. The complete chloroplast genome sequence of Quercus stewardiana (Fagaceae). Mitochondrial DNA Part B 2020, 5, 1958 -1959.
AMA StyleYao Li, Lu Wang, Yun Zhao, Yanming Fang. The complete chloroplast genome sequence of Quercus stewardiana (Fagaceae). Mitochondrial DNA Part B. 2020; 5 (2):1958-1959.
Chicago/Turabian StyleYao Li; Lu Wang; Yun Zhao; Yanming Fang. 2020. "The complete chloroplast genome sequence of Quercus stewardiana (Fagaceae)." Mitochondrial DNA Part B 5, no. 2: 1958-1959.
Intron-containing genes have the ability to generate multiple transcript isoforms by splicing, thereby greatly expanding the eukaryotic transcriptome and proteome. In eukaryotic cells, precursor mRNA (pre-mRNA) splicing is performed by a mega-macromolecular complex defined as a spliceosome. Among its splicing components, U1 small nuclear ribonucleoprotein (U1 snRNP) is the smallest subcomplex involved in early spliceosome assembly and 5'-splice site recognition. Its central component, named U1-70K, has been extensively characterized in animals and yeast. Very few investigations on U1-70K genes have been conducted in plants, however. To this end, we performed a comprehensive study to systematically identify 115 U1-70K genes from 67 plant species, ranging from algae to angiosperms. Phylogenetic analysis suggested that the expansion of the plant U1-70K gene family was likely to have been driven by whole-genome duplications. Subsequent comparisons of gene structures, protein domains, promoter regions and conserved splicing patterns indicated that plant U1-70Ks are likely to preserve their conserved molecular function across plant lineages and play an important functional role in response to environmental stresses. Furthermore, genetic analysis using T-DNA insertion mutants suggested that Arabidopsis U1-70K may be involved in response to osmotic stress. Our results provide a general overview of this gene family in Viridiplantae and will act as a reference source for future mechanistic studies on this U1 snRNP-specific splicing factor.
Mo‐Xian Chen; Kai‐Lu Zhang; Bei Gao; Jing‐Fang Yang; Yuan Tian; Debatosh Das; Tao Fan; Lei Dai; Ge‐Fei Hao; Guang‐Fu Yang; Jianhua Zhang; Fu‐Yuan Zhu; Yan‐Ming Fang. Phylogenetic comparison of 5′ splice site determination in central spliceosomal proteins of the U1‐70K gene family, in response to developmental cues and stress conditions. The Plant Journal 2020, 103, 357 -378.
AMA StyleMo‐Xian Chen, Kai‐Lu Zhang, Bei Gao, Jing‐Fang Yang, Yuan Tian, Debatosh Das, Tao Fan, Lei Dai, Ge‐Fei Hao, Guang‐Fu Yang, Jianhua Zhang, Fu‐Yuan Zhu, Yan‐Ming Fang. Phylogenetic comparison of 5′ splice site determination in central spliceosomal proteins of the U1‐70K gene family, in response to developmental cues and stress conditions. The Plant Journal. 2020; 103 (1):357-378.
Chicago/Turabian StyleMo‐Xian Chen; Kai‐Lu Zhang; Bei Gao; Jing‐Fang Yang; Yuan Tian; Debatosh Das; Tao Fan; Lei Dai; Ge‐Fei Hao; Guang‐Fu Yang; Jianhua Zhang; Fu‐Yuan Zhu; Yan‐Ming Fang. 2020. "Phylogenetic comparison of 5′ splice site determination in central spliceosomal proteins of the U1‐70K gene family, in response to developmental cues and stress conditions." The Plant Journal 103, no. 1: 357-378.
Chinese lacquer tree (Toxicodendron vernicifluum) is an important commercial arbor species widely cultivated in East Asia for producing highly durable lacquer. Here, we sequenced and analyzed the complete chloroplast (cp) genome of T. vernicifluum and reconstructed the phylogeny of Sapindales based on 52 cp genomes of six families. The plastome of T. vernicifluum is 159,571 bp in length, including a pair of inverted repeats (IRs) of 26,511 bp, separated by a large single-copy (LSC) region of 87,475 bp and a small single-copy (SSC) region of 19,074 bp. A total of 126 genes were identified, of which 81 are protein-coding genes, 37 are transfer RNA genes, and eight are ribosomal RNA genes. Forty-nine mononucleotide microsatellites, one dinucleotide microsatellite, two complex microsatellites, and 49 long repeats were determined. Structural differences such as inversion variation in LSC and gene loss in IR were detected across cp genomes of the six genera in Anacardiaceae. Phylogenetic analyses revealed that the genus Toxicodendron is closely related to Pistacia and Rhus. The phylogenetic relationships of the six families in Sapindales were well resolved. Overall, this study providing complete cp genome resources will be beneficial for determining potential molecular markers and evolutionary patterns of T. vernicifluum and its closely related species.
Lu Wang; Na He; Yao Li; Yanming Fang; Feilong Zhang. Complete Chloroplast Genome Sequence of Chinese Lacquer Tree (Toxicodendron vernicifluum, Anacardiaceae) and Its Phylogenetic Significance. BioMed Research International 2020, 2020, 1 -13.
AMA StyleLu Wang, Na He, Yao Li, Yanming Fang, Feilong Zhang. Complete Chloroplast Genome Sequence of Chinese Lacquer Tree (Toxicodendron vernicifluum, Anacardiaceae) and Its Phylogenetic Significance. BioMed Research International. 2020; 2020 ():1-13.
Chicago/Turabian StyleLu Wang; Na He; Yao Li; Yanming Fang; Feilong Zhang. 2020. "Complete Chloroplast Genome Sequence of Chinese Lacquer Tree (Toxicodendron vernicifluum, Anacardiaceae) and Its Phylogenetic Significance." BioMed Research International 2020, no. : 1-13.
Distylium macrophyllum H.T.Chang is a critically endangered tree species endemic to southern China. In this study, we assembled and characterized the plastome of D. macrophyllum using Illumina paired-end data. The circular genome is 159,089 bp in size, consisting of two copies of inverted repeat (IR) regions of 26,235 bp, one large single-copy (LSC) region of 87,822 bp, and one small single-copy (SSC) region of 18,797 bp. It encodes a total of 114 unique genes, including 80 protein-coding genes, 30 tRNA genes, and four rRNA genes. Phylogenetic analysis based on 13 cp genome sequences indicated that D. macrophyllum was sister to the clade of D. tsiangii and Parrotia subaequalis.
Shuifei Chen; Yao Li; Lu Wang; Lei Xie; Xiaomin Ge; Xu Zhou; Yaping Hu; Wenwen Zhang; Yanming Fang; Hui Ding. The complete chloroplast genome sequence of Distylium macrophyllum (Hamamelidaceae). Mitochondrial DNA Part B 2020, 5, 701 -702.
AMA StyleShuifei Chen, Yao Li, Lu Wang, Lei Xie, Xiaomin Ge, Xu Zhou, Yaping Hu, Wenwen Zhang, Yanming Fang, Hui Ding. The complete chloroplast genome sequence of Distylium macrophyllum (Hamamelidaceae). Mitochondrial DNA Part B. 2020; 5 (1):701-702.
Chicago/Turabian StyleShuifei Chen; Yao Li; Lu Wang; Lei Xie; Xiaomin Ge; Xu Zhou; Yaping Hu; Wenwen Zhang; Yanming Fang; Hui Ding. 2020. "The complete chloroplast genome sequence of Distylium macrophyllum (Hamamelidaceae)." Mitochondrial DNA Part B 5, no. 1: 701-702.
Distylium tsiangii Chun ex Walker is an evergreen tree species endemic to China. It has been classified as critically endangered in the Red List of China Higher Plants. Here, we sequenced, assembled, and analyzed the complete chloroplast (cp) genome of D. tsiangii. The plastome is 159,125 bp in length, with a typical quadripartite structure and consisting of a pair of inverted repeat (IR) regions (26,220 bp) separated by a large single copy (LSC) region (87,897 bp) and a small single copy (SSC) region (18,788 bp). The overall GC content was 38.00%. A total of 131 genes were annotated, including 37 tRNA genes, 86 protein-coding genes, and eight rRNA genes. Phylogenetic analysis showed that D. tsiangii was more closely related to Parrotia subaequalis.
Lei Xie; Lu Wang; Mingyue Zang; Shuifei Chen; Yao Li; Yanming Fang. The complete chloroplast genome of Distylium tsiangii Chun ex Walker, a rare and endangered plant. Mitochondrial DNA Part B 2020, 5, 430 -431.
AMA StyleLei Xie, Lu Wang, Mingyue Zang, Shuifei Chen, Yao Li, Yanming Fang. The complete chloroplast genome of Distylium tsiangii Chun ex Walker, a rare and endangered plant. Mitochondrial DNA Part B. 2020; 5 (1):430-431.
Chicago/Turabian StyleLei Xie; Lu Wang; Mingyue Zang; Shuifei Chen; Yao Li; Yanming Fang. 2020. "The complete chloroplast genome of Distylium tsiangii Chun ex Walker, a rare and endangered plant." Mitochondrial DNA Part B 5, no. 1: 430-431.
Quercus phillyraeoides A. Gray is an evergreen oak species native to East Asia, and it plays a vital role in mountain ecosystems. In this study, we assembled the complete chloroplast genome of Q. phillyraeoides based on sequencing data. The genome was circular and 161,384 bp in length, consisting of a large single-copy region (90,617 bp), small single-copy region (19,035 bp), and two short inverted repeat regions (25,866 bp). We found that the cp genome encodes for 131 genes, including 85 protein-coding genes (PCGs), 8 rRNA genes, and 37 tRNA genes. The results of the phylogenetic analysis of the complete cp genome sequence illustrated that Q. phillyraeoides is a member of the section Quercus and it is most closely related to Q. tarokoensis.
Chunping Xie; Dawei Liu; Chenghui Nan; Yanming Fang; Fulong Huang. The complete chloroplast genome sequence of Quercus phillyraeoides (Fagaceae). Mitochondrial DNA Part B 2020, 5, 904 -905.
AMA StyleChunping Xie, Dawei Liu, Chenghui Nan, Yanming Fang, Fulong Huang. The complete chloroplast genome sequence of Quercus phillyraeoides (Fagaceae). Mitochondrial DNA Part B. 2020; 5 (1):904-905.
Chicago/Turabian StyleChunping Xie; Dawei Liu; Chenghui Nan; Yanming Fang; Fulong Huang. 2020. "The complete chloroplast genome sequence of Quercus phillyraeoides (Fagaceae)." Mitochondrial DNA Part B 5, no. 1: 904-905.
Major topographic features facilitate intraspecific divergence through geographic isolation. This process may be enhanced by environmental isolation along climatic gradients, but also may be reduced by range shifts under rapid climatic changes. In this study, we examined how topography and climate have interacted over time and space to influence the genetic structure and evolutionary history of Quercus chenii, a deciduous oak species representative of the East China flora. Based on the nuclear microsatellite variation at 14 loci, we identified multiple genetic boundaries that were well associated with persistent landscape barriers of East China. Redundancy analysis indicated that both geography and climate explained similar amounts of intraspecific variation. Ecological differences along altitudinal gradients may have driven the divergence between highlands and lowlands. However, range expansions during the Last Interglacial as inferred from approximate Bayesian computation (ABC) may have increased the genetic diversity and eliminated the differentiation of lowland populations via admixture. Chloroplast (cp) DNA analysis of four intergenic spacers (2,866 bp in length) identified a total of 18 haplotypes, 15 of which were private to a single population, probably a result of long-term isolation among multiple montane habitats. A time-calibrated phylogeny suggested that palaeoclimatic changes of the Miocene underlay the lineage divergence of three major clades. In combination with ecological niche modeling (ENM), we concluded that mountainous areas with higher climatic stability are more likely to be glacial refugia that preserved higher phylogenetic diversity, while plains and basins may have acted as dispersal corridors for the post-glacial south-to-north migration. Our findings provide compelling evidence that both topography and climate have shaped the pattern of genetic variation of Q. chenii. Mountains as barriers facilitated differentiation through both geographic and environmental isolation, whereas lowlands as corridors increased the population connectivity especially when the species experienced range expansions.
Yao Li; Xingwang Zhang; Yanming Fang. Landscape Features and Climatic Forces Shape the Genetic Structure and Evolutionary History of an Oak Species (Quercus chenii) in East China. Frontiers in Plant Science 2019, 10, 1 .
AMA StyleYao Li, Xingwang Zhang, Yanming Fang. Landscape Features and Climatic Forces Shape the Genetic Structure and Evolutionary History of an Oak Species (Quercus chenii) in East China. Frontiers in Plant Science. 2019; 10 ():1.
Chicago/Turabian StyleYao Li; Xingwang Zhang; Yanming Fang. 2019. "Landscape Features and Climatic Forces Shape the Genetic Structure and Evolutionary History of an Oak Species (Quercus chenii) in East China." Frontiers in Plant Science 10, no. : 1.
Quercus myrsinifolia Blume is an evergreen oak tree species native to East Asia, and is also one of the dominant trees of subtropical evergreen broad-leaved forests. In this study, we sequenced and analysed the complete chloroplast (cp) genome of the species. The circular genome is 160,803 bp in size, consisting of two copies of inverted repeat (IR) regions of 25,840 bp, one large single-copy (LSC) region of 90,223 bp, and one small single-copy (SSC) region of 18,900 bp. It encodes a total of 114 unique genes, including 80 protein-coding genes, 30 tRNA genes, and four rRNA genes. Phylogenetic analysis based on 30 cp genome sequences indicated that Q. myrsinifolia was among the members of section Cyclobalanopsis, and was most closely related to Q. sichourensis.
Yao Li; Lu Wang; Yanming Fang. The complete chloroplast genome sequence of Quercus myrsinifolia (Fagaceae). Mitochondrial DNA Part B 2019, 4, 3139 -3140.
AMA StyleYao Li, Lu Wang, Yanming Fang. The complete chloroplast genome sequence of Quercus myrsinifolia (Fagaceae). Mitochondrial DNA Part B. 2019; 4 (2):3139-3140.
Chicago/Turabian StyleYao Li; Lu Wang; Yanming Fang. 2019. "The complete chloroplast genome sequence of Quercus myrsinifolia (Fagaceae)." Mitochondrial DNA Part B 4, no. 2: 3139-3140.
Excess N deposition from human activities has caused large-scale negative impacts on global ecosystem health and services. However, despite its importance, atmospheric N deposition in Yancheng remains poorly studied. Herein, spatial distributions of atmospheric N deposition and its probable sources were determined using ordinary kriging interpolation analysis of tissue N concentrations and δ15N signatures from 68 moss samples from sites around Yancheng. Hotspots of moss N concentration (1.0–2.5%) and, thus total N deposition (TN), were found in the northeast and west, with an overall decreasing tendency from west to east. TN averaged 18.18 kg N ha−1 yr−1. Moss δ15N varied between −7.76‰ and 1.28‰, with an overall increase from the center to surrounding areas. Negative moss δ15N values revealed that NH3 from agriculture and urban sewage were the main sources of atmospheric N deposition. Based on moss δ15N values, it could be concluded that wet deposition of NO3−- N and NH4+- N accounted for 20% (3.56 kg N ha−1 yr−1) and 66% (12.07 kg N ha−1 yr−1) of TN, respectively. Overall, 30% of the region exceeded the critical N deposition load for terrestrial ecosystems (20 kg N ha−1 yr−1), and given current average trends in increasing N deposition, all areas in the Yancheng region are predicted to surpass the critical load within the next 19 years. A long-term N mitigation strategy for the entire region should, thus, be at the forefront of governmental policymaking, with areas of Yancheng experiencing high N deposition requiring urgent attention.
Xiaoli Zhou; Steven Paul Sylvester; Rong Hu; Yanan Wang; Yanming Fang. Patterns and sources of atmospheric nitrogen deposition in Yancheng, Eastern China, indicated by moss N concentration and δ15N signatures. Atmospheric Pollution Research 2019, 10, 1601 -1609.
AMA StyleXiaoli Zhou, Steven Paul Sylvester, Rong Hu, Yanan Wang, Yanming Fang. Patterns and sources of atmospheric nitrogen deposition in Yancheng, Eastern China, indicated by moss N concentration and δ15N signatures. Atmospheric Pollution Research. 2019; 10 (5):1601-1609.
Chicago/Turabian StyleXiaoli Zhou; Steven Paul Sylvester; Rong Hu; Yanan Wang; Yanming Fang. 2019. "Patterns and sources of atmospheric nitrogen deposition in Yancheng, Eastern China, indicated by moss N concentration and δ15N signatures." Atmospheric Pollution Research 10, no. 5: 1601-1609.
Heavy metal pollution in the atmosphere is a major environmental problem, which has important impacts on ecosystems and human health. In this study, the atmospheric deposition of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), vanadium (V), and zinc (Zn) in Suqian, China, was investigated by using the moss Haplocladium microphyllum as a bioindicator. The survey was carried out during the summer of 2017 at 40 homogenously distributed sampling sites. Cr, Cu, Ni, Pb, V, and Zn were analyzed by inductively coupled plasma atomic emission spectrometry, and Cd was analyzed by inductively coupled plasma mass spectrometry. Wide variations in heavy metals (Cd, Pb, and Zn) indicated that the concentrations of elements are influenced by local emission sources. Spatial distribution maps of the elements were constructed using geographic information system technology. The pollution load index showed that the study area was moderately polluted to unpolluted. Significant positive correlations (p < .01) and weak positive correlations (p < .05) were identified among some of the elements, indicating that they originated from common sources. A principal component analysis classified the heavy metals into natural and anthropogenic sources, and identified four primary sources: nature soil dust, industry activities, traffic emission, and agricultural activities.
Rong Hu; Xiaoli Zhou; Yanan Wang; Yanming Fang. Survey of atmospheric heavy metal deposition in Suqian using moss contamination. Human and Ecological Risk Assessment: An International Journal 2019, 26, 1795 -1809.
AMA StyleRong Hu, Xiaoli Zhou, Yanan Wang, Yanming Fang. Survey of atmospheric heavy metal deposition in Suqian using moss contamination. Human and Ecological Risk Assessment: An International Journal. 2019; 26 (7):1795-1809.
Chicago/Turabian StyleRong Hu; Xiaoli Zhou; Yanan Wang; Yanming Fang. 2019. "Survey of atmospheric heavy metal deposition in Suqian using moss contamination." Human and Ecological Risk Assessment: An International Journal 26, no. 7: 1795-1809.
Purple acid phosphatase (PAP) encoding genes are a multigene family. PAPs require iron (Fe) to exert their functions that are involved in diverse biological roles including Fe homeostasis. However, the possible roles of PAPs in response to excess Fe remain unknown. In this study, we attempted to understand the regulation of PAPs by excess Fe in tea plant (Camellia sinensis). A genome-wide investigation of PAP encoding genes identified 19 CsPAP members based on the conserved motifs. The phylogenetic analysis showed that PAPs could be clustered into four groups, of which group II contained two specific cysteine-containing motifs "GGECGV" and "YERTC". To explore the expression patterns of CsPAP genes in response to excessive Fe supply, RNA-sequencing (RNA-seq) analyses were performed to compare their transcript abundances between tea plants that are grown under normal and high iron conditions, respectively. 17 members were shown to be transcribed in both roots and leaves. When supplied with a high amount of iron, the expression levels of four genes were significantly changed. Of which, CsPAP15a, CsPAP23 and CsPAP27c were shown as downregulated, while the highly expressed CsPAP10a was upregulated. Moreover, CsPAP23 was found to be alternatively spliced, suggesting its post-transcriptional regulation. The present work implicates that some CsPAP genes could be associated with the responses of tea plants to the iron regime, which may offer a new direction towards a further understanding of iron homeostasis and provide the potential approaches for crop improvement in terms of iron biofortification.
Chaoyan Yin; Fei Wang; Huiqin Fan; Yanming Fang; Wenfeng Li. Identification of Tea Plant Purple Acid Phosphatase Genes and Their Expression Responses to Excess Iron. International Journal of Molecular Sciences 2019, 20, 1954 .
AMA StyleChaoyan Yin, Fei Wang, Huiqin Fan, Yanming Fang, Wenfeng Li. Identification of Tea Plant Purple Acid Phosphatase Genes and Their Expression Responses to Excess Iron. International Journal of Molecular Sciences. 2019; 20 (8):1954.
Chicago/Turabian StyleChaoyan Yin; Fei Wang; Huiqin Fan; Yanming Fang; Wenfeng Li. 2019. "Identification of Tea Plant Purple Acid Phosphatase Genes and Their Expression Responses to Excess Iron." International Journal of Molecular Sciences 20, no. 8: 1954.
According to the novel weapons hypothesis, root exudates are the inhibition factors for native species growth and development through invasive plants. It is hypothesized that antioxidant system (AOS) presents an effective role in plant defense system. The allelopathy indexes of P. multifida gametophyte biomass and sporogonium conversions rates turn negative with the dose and time effects, and the synthetical allelopathic effect index was −55.07% at 100% treatments under root exudates treatments. Under transmission electron microscopy, the cell structures turn burry. Next, AOS and programmed cell death (PCD) were tested in this study. In AOS, strong activities of superoxide dismutase, catalase, glutathione reductase and glutathione S-transferase (GST) were identified in gametophyte cells under the treatments, as well as the contents of glutathione, ascorbic acid and reduced ascorbate, while GPX activity decreased. Based on the input (SOD activity) and the output (GST activity) of antioxidant system, and the decreasing system control would be a reason leading gametophyte death under root exudates. At day 10, PCD would get its peak of 46.93% at 100% root exudates. We found a dynamic balance of PCD and AOS under the exudates treatments. We detected hexadecanoic acid, ethylene glycol and undecane are three major chemicals in root exudates. Our results provide a reference of AOS and PCD working under root exudates treatments in plants and offer novel strategy for the native species protection and invasion plants control in environment science.
Kai-Mei Zhang; Yu Shen; Jing Yang; Xiang Miu; Prasanta C. Bhowmik; Xiaoqi Zhou; Yan-Ming Fang; Bao-Shan Xing. The defense system for Bidens pilosa root exudate treatments in Pteris multifida gametophyte. Ecotoxicology and Environmental Safety 2019, 173, 203 -213.
AMA StyleKai-Mei Zhang, Yu Shen, Jing Yang, Xiang Miu, Prasanta C. Bhowmik, Xiaoqi Zhou, Yan-Ming Fang, Bao-Shan Xing. The defense system for Bidens pilosa root exudate treatments in Pteris multifida gametophyte. Ecotoxicology and Environmental Safety. 2019; 173 ():203-213.
Chicago/Turabian StyleKai-Mei Zhang; Yu Shen; Jing Yang; Xiang Miu; Prasanta C. Bhowmik; Xiaoqi Zhou; Yan-Ming Fang; Bao-Shan Xing. 2019. "The defense system for Bidens pilosa root exudate treatments in Pteris multifida gametophyte." Ecotoxicology and Environmental Safety 173, no. : 203-213.
The interactions of major topographic features with climate fluctuations over time are key factors that influence the spatial genetic structure of trees species. As an important characteristic of China’s terrain, the boundary between the mountainous West China and the lowland East China has been found to contribute to the divergence of many species. In this study, we examined whether the stepped geomorphology of China has shaped the genetic structure of Quercus acutissima, a widespread oak species native to East Asia, at a much larger geographic scale. Thirty natural populations of the species were sampled across the entire distribution in China and genotyped using ten nuclear microsatellite markers. To determine the genetic structure and demographic history, we conducted Bayesian cluster analysis and approximate Bayesian computation. A significant east-west divergence was detected at the species level, with western populations presenting much stronger differentiation and lower genetic diversity than eastern populations. The divergence between the groups of Southwest China and East China was estimated to have occurred 3.55–2.37 million years ago (Ma), closely associated with the recent uplift of the Qinghai-Tibetan Plateau (QTP) and climate changes during the late Pliocene to the early Pleistocene. The Central China group may arise from the admixture of these two groups, which was dated to 0.83–0.55 Ma, a period covering several interglacial intervals with unusually warm and wet climate in Central China. The spatial genetic structure of Q. acutissima indicates the possibility of central-marginal dispersal dynamics along latitude and existence of multiple refugia at distribution edges. Our findings highlight that the stepped geomorphology in China and climatic changes since the Pliocene play an important role in shaping the intraspecific genetic structure of widespread species in East Asia.
Xing-Wang Zhang; Yao Li; Qiang Zhang; Yan-Ming Fang. Ancient east-west divergence, recent admixture, and multiple marginal refugia shape genetic structure of a widespread oak species (Quercus acutissima) in China. Tree Genetics & Genomes 2018, 14, 88 .
AMA StyleXing-Wang Zhang, Yao Li, Qiang Zhang, Yan-Ming Fang. Ancient east-west divergence, recent admixture, and multiple marginal refugia shape genetic structure of a widespread oak species (Quercus acutissima) in China. Tree Genetics & Genomes. 2018; 14 (6):88.
Chicago/Turabian StyleXing-Wang Zhang; Yao Li; Qiang Zhang; Yan-Ming Fang. 2018. "Ancient east-west divergence, recent admixture, and multiple marginal refugia shape genetic structure of a widespread oak species (Quercus acutissima) in China." Tree Genetics & Genomes 14, no. 6: 88.