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Pei L, Gao Y, Feng L, Zhang Z, Liu N, Yang B, Zhao N. Phenolic Acids and Flavonoids Play Important Roles in Flower Bud Differentiation in Mikania micrantha: Transcriptomics and Metabolomics. Int J Mol Sci 2023; 24:16550. [PMID: 38068873 PMCID: PMC10705899 DOI: 10.3390/ijms242316550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 11/13/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
Mikania micrantha is a highly invasive vine, and its ability to sexually reproduce is a major obstacle to its eradication. The long-distance dissemination of M. micrantha depends on the distribution of seeds; therefore, inhibiting M. micrantha flowering and seed production is an effective control strategy. The number of blooms of M. micrantha differs at different altitudes (200, 900, and 1300 m). In this study, we used a combination of metabolomics and transcriptomics methods to study the patterns of metabolite accumulation in the flower buds of M. micrantha. Using LC-MS/MS, 658 metabolites were found in the flower buds of M. micrantha at three different altitudes (200, 900, and 1300 m). Flavonoids and phenolic acids were found to be the main differential metabolites, and their concentrations were lower at 900 m than at 200 m and 1300 m, with the concentrations of benzoic acid, ferulic acid, and caffeic acid being the lowest. The biosynthesis pathways for flavonoids and phenolic compounds were significantly enriched for differentially expressed genes (DEGs), according to the results of transcriptome analysis. The production of flavonoid and phenolic acids was strongly linked with the expressions of phenylalanine ammonia-lyase (PAL), caffeoyl-CoA O-methyltransferase (COMT), and 4-coumarate-CoA ligase (4CL), according to the results of the combined transcriptome and metabolome analysis. These genes' roles in the regulation of distinct phenolic acids and flavonoids during M. micrantha bud differentiation are still unknown. This study adds to our understanding of how phenolic acids and flavonoids are regulated in M. micrantha flower buds at various altitudes and identifies regulatory networks that may be involved in this phenomenon, offering a new approach for the prevention and management of M. micrantha.
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Affiliation(s)
- Ling Pei
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China; (L.P.); (Y.G.); (L.F.); (Z.Z.)
| | - Yanzhu Gao
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China; (L.P.); (Y.G.); (L.F.); (Z.Z.)
| | - Lichen Feng
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China; (L.P.); (Y.G.); (L.F.); (Z.Z.)
| | - Zihan Zhang
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China; (L.P.); (Y.G.); (L.F.); (Z.Z.)
| | - Naiyong Liu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China;
| | - Bin Yang
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China;
| | - Ning Zhao
- College of Life Sciences, Southwest Forestry University, Kunming 650224, China; (L.P.); (Y.G.); (L.F.); (Z.Z.)
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming 650224, China;
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Luo W, Xiao N, Wu F, Mo B, Kong W, Yu Y. Genome-Wide Identification and Characterization of YUCCA Gene Family in Mikania micrantha. Int J Mol Sci 2022; 23:13037. [PMID: 36361840 PMCID: PMC9655643 DOI: 10.3390/ijms232113037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 09/28/2023] Open
Abstract
Auxin is a general coordinator for growth and development throughout plant lifespan, acting in a concentration-dependent manner. Tryptophan aminotransferases (YUCCA) family catalyze the oxidative decarboxylation of indole-3-pyruvic acid (IPA) to form indole-3-acetic acid (IAA) and plays a critical role in auxin homeostasis. Here, 18 YUCCA family genes divided into four categories were identified from Mikania micrantha (M. micrantha), one of the world's most invasive plants. Five highly conserved motifs were characterized in these YUCCA genes (MmYUCs). Transcriptome analysis revealed that MmYUCs exhibited distinct expression patterns in different organs and five MmYUCs showed high expression levels throughout all the five tissues, implying that they may play dominant roles in auxin biosynthesis and plant development. In addition, MmYUC6_1 was overexpressed in DR5::GUS Arabidopsis line to explore its function, which resulted in remarkably increased auxin level and typical elevated auxin-related phenotypes including shortened roots and elongated hypocotyls in the transgenic plants, suggesting that MmYUC6_1 promoted IAA biosynthesis in Arabidopsis. Collectively, these findings provided comprehensive insight into the phylogenetic relationships, chromosomal distributions, expression patterns and functions of the MmYUC genes in M. micrantha, which would facilitate the study of molecular mechanisms underlying the fast growth of M. micrantha and preventing its invasion.
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Affiliation(s)
- Weigui Luo
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Nian Xiao
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Feiyan Wu
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Beixin Mo
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Wenwen Kong
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Yu Yu
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Longhua Bioindustry and Innovation Research Institute, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
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Ruan X, Wang Z, Su Y, Wang T. Population Genomics Reveals Gene Flow and Adaptive Signature in Invasive Weed Mikania micrantha. Genes (Basel) 2021; 12:1279. [PMID: 34440453 PMCID: PMC8394975 DOI: 10.3390/genes12081279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/15/2021] [Accepted: 08/18/2021] [Indexed: 11/28/2022] Open
Abstract
A long-standing and unresolved issue in invasion biology concerns the rapid adaptation of invaders to nonindigenous environments. Mikania micrantha is a notorious invasive weed that causes substantial economic losses and negative ecological consequences in southern China. However, the contributions of gene flow, environmental variables, and functional genes, all generally recognized as important factors driving invasive success, to its successful invasion of southern China are not fully understood. Here, we utilized a genotyping-by-sequencing approach to sequence 306 M. micrantha individuals from 21 invasive populations. Based on the obtained genome-wide single nucleotide polymorphism (SNP) data, we observed that all the populations possessed similar high levels of genetic diversity that were not constrained by longitude and latitude. Mikania micrantha was introduced multiple times and subsequently experienced rapid-range expansion with recurrent high gene flow. Using FST outliers, a latent factor mixed model, and the Bayesian method, we identified 38 outlier SNPs associated with environmental variables. The analysis of these outlier SNPs revealed that soil composition, temperature, precipitation, and ecological variables were important determinants affecting the invasive adaptation of M. micrantha. Candidate genes with outlier signatures were related to abiotic stress response. Gene family clustering analysis revealed 683 gene families unique to M. micrantha which may have significant implications for the growth, metabolism, and defense responses of M. micrantha. Forty-one genes showing significant positive selection signatures were identified. These genes mainly function in binding, DNA replication and repair, signature transduction, transcription, and cellular components. Collectively, these findings highlight the contribution of gene flow to the invasion and spread of M. micrantha and indicate the roles of adaptive loci and functional genes in invasive adaptation.
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Affiliation(s)
- Xiaoxian Ruan
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; (X.R.); (Z.W.)
| | - Zhen Wang
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; (X.R.); (Z.W.)
| | - Yingjuan Su
- School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China; (X.R.); (Z.W.)
- Research Institute of Sun Yat-sen University in Shenzhen, Shenzhen 518057, China
| | - Ting Wang
- College of Life Sciences, South China Agricultural University, Guangzhou 510641, China
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Banerjee AK, Hou Z, Lin Y, Lan W, Tan F, Xing F, Li G, Guo W, Huang Y. Going with the flow: analysis of population structure reveals high gene flow shaping invasion pattern and inducing range expansion of Mikania micrantha in Asia. Ann Bot 2020; 125:1113-1126. [PMID: 32173740 PMCID: PMC7262463 DOI: 10.1093/aob/mcaa044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 03/12/2020] [Indexed: 05/08/2023]
Abstract
BACKGROUND AND AIMS Mikania micrantha, a climbing perennial weed of the family Asteraceae, is native to Latin America and is highly invasive in the tropical belt of Asia, Oceania and Australia. This study was framed to investigate the population structure of M. micrantha at a large spatial scale in Asia and to identify how introduction history, evolutionary forces and landscape features influenced the genetic pattern of the species in this region. METHODS We assessed the genetic diversity and structure of 1052 individuals from 46 populations for 12 microsatellite loci. The spatial pattern of genetic variation was investigated by estimating the relationship between genetic distance and geographical, climatic and landscape resistances hypothesized to influence gene flow between populations. KEY RESULTS We found high genetic diversity of M. micrantha in this region, as compared with the genetic diversity parameters of other invasive species. Spatial and non-spatial clustering algorithms identified the presence of multiple genetic clusters and admixture between populations. Most of the populations showed heterozygote deficiency, primarily due to inbreeding, and the founder populations showed evidence of a genetic bottleneck. Persistent gene flow throughout the invasive range caused low genetic differentiation among populations and provided beneficial genetic variation to the marginal populations in a heterogeneous environment. Environmental suitability was found to buffer the detrimental effects of inbreeding at the leading edge of range expansion. Both linear and non-linear regression models demonstrated a weak relationship between genetic distance and geographical distance, as well as bioclimatic variables and environmental resistance surfaces. CONCLUSIONS These findings provide evidence that extensive gene flow and admixture between populations have influenced the current genetic pattern of M. micrantha in this region. High gene flow across the invaded landscape may facilitate adaptation, establishment and long-term persistence of the population, thereby indicating the range expansion ability of the species.
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Affiliation(s)
- Achyut Kumar Banerjee
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Zhuangwei Hou
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yuting Lin
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wentao Lan
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong, China
| | - Fengxiao Tan
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong, China
| | - Fen Xing
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Guanghe Li
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wuxia Guo
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong, China
| | - Yelin Huang
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
- For correspondence. E-mail
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Liu B, Yan J, Li W, Yin L, Li P, Yu H, Xing L, Cai M, Wang H, Zhao M, Zheng J, Sun F, Wang Z, Jiang Z, Ou Q, Li S, Qu L, Zhang Q, Zheng Y, Qiao X, Xi Y, Zhang Y, Jiang F, Huang C, Liu C, Ren Y, Wang S, Liu H, Guo J, Wang H, Dong H, Peng C, Qian W, Fan W, Wan F. Mikania micrantha genome provides insights into the molecular mechanism of rapid growth. Nat Commun 2020; 11:340. [PMID: 31953413 PMCID: PMC6969026 DOI: 10.1038/s41467-019-13926-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 12/06/2019] [Indexed: 11/08/2022] Open
Abstract
Mikania micrantha is one of the top 100 worst invasive species that can cause serious damage to natural ecosystems and substantial economic losses. Here, we present its 1.79 Gb chromosome-scale reference genome. Half of the genome is composed of long terminal repeat retrotransposons, 80% of which have been derived from a significant expansion in the past one million years. We identify a whole genome duplication event and recent segmental duplications, which may be responsible for its rapid environmental adaptation. Additionally, we show that M. micrantha achieves higher photosynthetic capacity by CO2 absorption at night to supplement the carbon fixation during the day, as well as enhanced stem photosynthesis efficiency. Furthermore, the metabolites of M. micrantha can increase the availability of nitrogen by enriching the microbes that participate in nitrogen cycling pathways. These findings collectively provide insights into the rapid growth and invasive adaptation.
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Affiliation(s)
- Bo Liu
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Jian Yan
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Weihua Li
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Lijuan Yin
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
- Key Laboratory of Protein Function and Regulation in Agricultural Organisms of Guangdong province, College of Life Science, South China Agricultural University, Guangzhou, 510642, China
| | - Ping Li
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Hanxia Yu
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Longsheng Xing
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Minling Cai
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Hengchao Wang
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Mengxin Zhao
- The Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jin Zheng
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Feng Sun
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Zhenzhen Wang
- Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture and Rural Affairs; Guangdong Provincial Key Laboratory of Eco-Circular Agriculture; College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China
| | - Zhaoyang Jiang
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Qiaojing Ou
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Shubin Li
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Lu Qu
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Qilei Zhang
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Yaping Zheng
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China
| | - Xi Qiao
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Yu Xi
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Yan Zhang
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Fan Jiang
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Cong Huang
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Conghui Liu
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Yuwei Ren
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Sen Wang
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Hangwei Liu
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China
| | - Jianyang Guo
- The Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Haihong Wang
- Key Laboratory of Protein Function and Regulation in Agricultural Organisms of Guangdong province, College of Life Science, South China Agricultural University, Guangzhou, 510642, China
| | - Hui Dong
- Fairy Lake Botanical Garden, Shenzhen and Chinese Academy of Sciences, Shenzhen, 518004, China
| | - Changlian Peng
- Institute of Ecological Science, Guangdong Provincial Key Laboratory of Biotechnology for Plant Development; Guangzhou Key Laboratory of Subtropical Biodiversity and Biomonitoring; School of Life Science, South China Normal University, Guangzhou, 510631, China.
| | - Wanqiang Qian
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China.
| | - Wei Fan
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China.
| | - Fanghao Wan
- Guangdong Laboratory of Lingnan Modern Agriculture, Shenzhen; Genome Analysis Laboratory of the Ministry of Agriculture; Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518120, China.
- The Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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Geng SL, Chen Q, Cai WL, Cao AC, Ou-Yang CB. Genetic variation in the invasive weed Mikania micrantha (Asteraceae) suggests highways as corridors for its dispersal in southern China. Ann Bot 2017; 119:457-464. [PMID: 28028017 PMCID: PMC5314642 DOI: 10.1093/aob/mcw218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Revised: 08/01/2016] [Accepted: 09/10/2016] [Indexed: 05/24/2023]
Abstract
BACKGROUND AND AIMS Roads as corridors of seed or fruit spatial dispersal have major impacts on the establishment and spread of invasive species, but their precise role in population genetic variation remains poorly understood. The South American weed Mikania micrantha has spread rapidly across southern China since its introduction to the Shenzhen area in 1984. This study investigated how its genetic diversity is distributed along highways, and whether highways have acted as corridors for the rapid expansion of M. micrantha METHODS: Twenty-seven roadside populations were sampled along four highways in southern China, and 787 samples were examined using 12 microsatellite markers. Variation in genetic diversity among populations was quantified and patterns of genetic differentiation were analysed. KEY RESULTS A high level of genetic diversity was found at both the species and the population levels in this self-incompatible plant (expected heterozygosity = 0·497 and 0·477, respectively; allelic richness = 2·580 and 2·521, respectively). The Wright F-statistic value among populations (0·044, P < 0·01) and the analysis of molecular variance (91 % of genetic variation residing within populations, 9 % among populations within highways and 0 % among the four highways) showed a relatively low level of genetic differentiation among populations, while the principal coordinate and cluster analyses also indicated a lack of clear geographical genetic structure among populations. The calculated Nm value of 5·5 signifies strong gene flow. CONCLUSIONS The pattern of genetic variation is consistent with facilitated dispersal along highways. The genetic admixtures among the roadside populations imply the occurrence of multiple population introductions during colonization. The long-distance dispersal of seeds associated with vehicular transportation on highways may have played important roles in shaping the genetic variation. This finding highlights the importance of highways as corridors for the spread of M. micrantha in southern China.
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Affiliation(s)
- Shi-Lei Geng
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Quan Chen
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Wen-Li Cai
- College of Life Sciences, South China Agricultural University, Guangzhou 510642, China
| | - Ao-Cheng Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
| | - Can-Bin Ou-Yang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
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Wang T, Chen G, Zan Q, Wang C, Su YJ. AFLP genome scan to detect genetic structure and candidate loci under selection for local adaptation of the invasive weed Mikania micrantha. PLoS One 2012; 7:e41310. [PMID: 22829939 PMCID: PMC3400595 DOI: 10.1371/journal.pone.0041310] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 06/25/2012] [Indexed: 11/18/2022] Open
Abstract
Why some species become successful invaders is an important issue in invasive biology. However, limited genomic resources make it very difficult for identifying candidate genes involved in invasiveness. Mikania micrantha H.B.K. (Asteraceae), one of the world's most invasive weeds, has adapted rapidly in response to novel environments since its introduction to southern China. In its genome, we expect to find outlier loci under selection for local adaptation, critical to dissecting the molecular mechanisms of invasiveness. An explorative amplified fragment length polymorphism (AFLP) genome scan was used to detect candidate loci under selection in 28 M. micrantha populations across its entire introduced range in southern China. We also estimated population genetic parameters, bottleneck signatures, and linkage disequilibrium. In binary characters, such as presence or absence of AFLP bands, if all four character combinations are present, it is referred to as a character incompatibility. Since character incompatibility is deemed to be rare in populations with extensive asexual reproduction, a character incompatibility analysis was also performed in order to infer the predominant mating system in the introduced M. micrantha populations. Out of 483 AFLP loci examined using stringent significance criteria, 14 highly credible outlier loci were identified by Dfdist and Bayescan. Moreover, remarkable genetic variation, multiple introductions, substantial bottlenecks and character compatibility were found to occur in M. micrantha. Thus local adaptation at the genome level indeed exists in M. micrantha, and may represent a major evolutionary mechanism of successful invasion. Interactions between genetic diversity, multiple introductions, and reproductive modes contribute to increase the capacity of adaptive evolution.
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Affiliation(s)
- Ting Wang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
| | - Guopei Chen
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qijie Zan
- Shenzhen Wildlife Rescue and Rehabilitation Center, Shenzhen, China
| | - Chunbo Wang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ying-juan Su
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- * E-mail:
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Wang T, Chen G, Zan Q, Wang C, Su YJ. AFLP genome scan to detect genetic structure and candidate loci under selection for local adaptation of the invasive weed Mikania micrantha. PLoS One 2012. [PMID: 22829939 DOI: 10.1371/journal.pone.0041310e41310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023] Open
Abstract
Why some species become successful invaders is an important issue in invasive biology. However, limited genomic resources make it very difficult for identifying candidate genes involved in invasiveness. Mikania micrantha H.B.K. (Asteraceae), one of the world's most invasive weeds, has adapted rapidly in response to novel environments since its introduction to southern China. In its genome, we expect to find outlier loci under selection for local adaptation, critical to dissecting the molecular mechanisms of invasiveness. An explorative amplified fragment length polymorphism (AFLP) genome scan was used to detect candidate loci under selection in 28 M. micrantha populations across its entire introduced range in southern China. We also estimated population genetic parameters, bottleneck signatures, and linkage disequilibrium. In binary characters, such as presence or absence of AFLP bands, if all four character combinations are present, it is referred to as a character incompatibility. Since character incompatibility is deemed to be rare in populations with extensive asexual reproduction, a character incompatibility analysis was also performed in order to infer the predominant mating system in the introduced M. micrantha populations. Out of 483 AFLP loci examined using stringent significance criteria, 14 highly credible outlier loci were identified by Dfdist and Bayescan. Moreover, remarkable genetic variation, multiple introductions, substantial bottlenecks and character compatibility were found to occur in M. micrantha. Thus local adaptation at the genome level indeed exists in M. micrantha, and may represent a major evolutionary mechanism of successful invasion. Interactions between genetic diversity, multiple introductions, and reproductive modes contribute to increase the capacity of adaptive evolution.
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Affiliation(s)
- Ting Wang
- CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China
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Yan Y, Huang Y, Fang X, Lu L, Zhou R, Ge X, Shi S. Development and characterization of EST-SSR markers in the invasive weed Mikania micrantha (Asteraceae). Am J Bot 2011; 98:e1-e3. [PMID: 21613074 DOI: 10.3732/ajb.1000387] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
PREMISE OF THE STUDY Microsatellite markers were developed for the invasive species Mikania micrantha to investigate its invasion history. Transcriptome sequencing projects offer a potential source for the development of new markers. METHODS AND RESULTS Sixteen polymorphic simple sequence repeat (SSR) markers derived from ESTs were identified and screened in 36 samples of M. micrantha. The number of alleles per locus ranged from two to four, with an average of 2.7 alleles per locus. The expected heterozygosity and observed heterozygosity ranged from 0 to 0.7754 and 0 to 0.8333, respectively. CONCLUSIONS These EST-SSR markers may be useful for further investigation of the population genetics of M. micrantha as additional tools to trace its invasion history.
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Affiliation(s)
- Yubin Yan
- State Key Laboratory of Biocontrol and Key Laboratory of Gene Engineering of the Ministry of Education, Sun Yat-Sen University, Guangzhou, China
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Li DM, Staehelin C, Zhang YS, Peng SL. Identification of genes differentially expressed in Mikania micrantha during Cuscuta campestris infection by suppression subtractive hybridization. J Plant Physiol 2009; 166:1423-35. [PMID: 19328592 DOI: 10.1016/j.jplph.2009.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2008] [Revised: 02/06/2009] [Accepted: 02/07/2009] [Indexed: 05/07/2023]
Abstract
The influence of Cuscuta campestris on its host Mikania micrantha has been studied with respect to biomass accumulation, physiology and ecology. Molecular events of this parasitic plant-plant interaction are poorly understood, however. In this study, we identified novel genes from M. micrantha induced by C. campestris infection. Genes expressed upon parasitization by C. campestris at early post-penetration stages were investigated by construction and characterization of subtracted cDNA libraries from shoots and stems of M. micrantha. Three hundred and three presumably up-regulated expressed sequence tags (ESTs) were identified and classified in functional categories, such as "metabolism", "cell defence and stress", "transcription factor", "signal transduction", "transportation" and "photosynthesis". In shoots and stems of infected M. micrantha, genes associated with defence responses and cell wall modifications were induced, confirming similar data from other parasitic plant-plant interactions. However, gene expression profiles in infected shoots and stems were found to be different. Compared to infected shoots, more genes induced in response to biotic and abiotic stress factors were identified in infected stems. Furthermore, database comparisons revealed a notable number of M. micrantha ESTs that matched genes with unknown function. Expression analysis by quantitative real-time RT-PCR of 21 genes (from different functional categories) showed significantly increased levels for 13 transcripts in response to C. campestris infection. In conclusion, this study provides an overview of genes from parasitized M. micrantha at early post-penetration stages. The acquired data form the basis for a molecular understanding of host reactions in response to parasitic plants.
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Affiliation(s)
- Dong-Mei Li
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China
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Wang T, Su Y, Chen G. Population Genetic Variation and Structure of the Invasive Weed Mikania micrantha in Southern China: Consequences of Rapid Range Expansion. J Hered 2007; 99:22-33. [PMID: 17906304 DOI: 10.1093/jhered/esm080] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Invasive plants such as Mikania micrantha provide valuable opportunities for studying population genetic consequences of rapid range expansion. Twenty-eight populations of M. micrantha throughout its introduced range in southern China were examined by using intersimple sequence repeat markers. Population genetic parameters were estimated by Bayesian approaches as well as conventional methods. Bottleneck signature, multilocus linkage disequilibrium, character compatibility, and cluster analyses were conducted to assay the factors that may act to shape population variability. High levels of genetic variation and differentiation were detected in the introduced populations of M. micrantha. All populations experienced severe bottlenecks. Most of them demonstrated significant linkage disequilibrium and matrix compatibility. Populations were mainly clustered into 2 groups, and those from different regions intermingled in the unweighted pair group method with arithmetic mean (UPGMA) dendrogram. No geographical signature was found in the pattern of population genetic variation. This research indicates that during M. micrantha invasion, multiple introductions mitigated the loss of genetic variation associated with bottlenecks. Nonetheless, bottlenecks enhanced the population differentiation. Human-mediated long-distance dispersal events of seeds or propagules explain the lack of geographic structure in genetic variation. Although asexual reproduction is the predominant mating mode in M. micrantha, it has little effect on the population genetic composition.
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Affiliation(s)
- Ting Wang
- Wuhan Institute of Botany, the Chinese Academy of Sciences, Wuhan, Hubei 430074, China
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