{"title":"Genetic and epigenetic variation of Trapa bispinosa under slope gradient: A case study in a subtropical freshwater lake","authors":"Yixian Li , Xuyao Zhao , Manli Xia , Hongwei Hou","doi":"10.1016/j.aquabot.2023.103679","DOIUrl":null,"url":null,"abstract":"<div><p>Dynamic environmental factors can influence the genetic diversity and epigenetic variation of aquatic plants, thus accelerate the rate of species adaptations. <em>Trapa bispinosa</em> is an aquatic crop which is widely distributed in China and worldwide, yet little is known about the genetic and epigenetic variations of <em>T. bispinosa</em> in fishery and nature habitats. By using AFLP and MSAP, we analyzed the genetic and epigenetic variations of 27 <em>T. bispinasa</em> populations in a subtropical freshwater lake. A relative high level of genetic diversity (mean <em>H</em><sub>E</sub> = 0.312, <em>I</em> = 0.480, <em>PPL</em> = 54.90%) and epigenetic variation (mean e<em>H</em><sub>E</sub> = 0.351, e<em>I</em> = 0.531, e<em>PPL</em> = 67.84%) were detected. Besides, fishery habitats maintained relative higher epigenetic variations of <em>T. bispinosa</em> (<em>H</em><sub>E</sub> = 0.254, e<em>I</em> = 0.378, e<em>PPL</em> = 68.28%) than nature habitats (e<em>H</em><sub>E</sub> = 0.253, e<em>I</em> = 0.376, e<em>PPL</em> = 67.77%). Overall variations were basically distributed within populations (Ø<sub>ST</sub> = 0.260, <em>P</em> < 0.001). Bayesian analysis revealed a pattern of genetic structure consisting of two clusters among the populations. The Mantel regression of genetic and epigenetic variation against geographic distance did not reveal any correlations, but showed a correlative relationship with environmental variables (<em>r</em> = −0.47, <em>P</em> < 0.05). Specially, genetic diversity of <em>T. bispinosa</em> showed a positive correlation with slope aspect. These results indicated that habitat slope may shape the pattern of genetic variation in <em>T. bispinosa</em>, which further illustrated that even in a fine geographical scale, genetic diversity was unevenly distributed, restoration measurements for this aquatic crop should carefully take the habitat slope into account.</p></div><div><h3>Data accessibility</h3><p>All codes and polymorphism raw data are openly available from the Github repository: <span>https://github.com/yixian185/Data-for-Trapa</span><svg><path></path></svg>.</p></div>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304377023000645","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Dynamic environmental factors can influence the genetic diversity and epigenetic variation of aquatic plants, thus accelerate the rate of species adaptations. Trapa bispinosa is an aquatic crop which is widely distributed in China and worldwide, yet little is known about the genetic and epigenetic variations of T. bispinosa in fishery and nature habitats. By using AFLP and MSAP, we analyzed the genetic and epigenetic variations of 27 T. bispinasa populations in a subtropical freshwater lake. A relative high level of genetic diversity (mean HE = 0.312, I = 0.480, PPL = 54.90%) and epigenetic variation (mean eHE = 0.351, eI = 0.531, ePPL = 67.84%) were detected. Besides, fishery habitats maintained relative higher epigenetic variations of T. bispinosa (HE = 0.254, eI = 0.378, ePPL = 68.28%) than nature habitats (eHE = 0.253, eI = 0.376, ePPL = 67.77%). Overall variations were basically distributed within populations (ØST = 0.260, P < 0.001). Bayesian analysis revealed a pattern of genetic structure consisting of two clusters among the populations. The Mantel regression of genetic and epigenetic variation against geographic distance did not reveal any correlations, but showed a correlative relationship with environmental variables (r = −0.47, P < 0.05). Specially, genetic diversity of T. bispinosa showed a positive correlation with slope aspect. These results indicated that habitat slope may shape the pattern of genetic variation in T. bispinosa, which further illustrated that even in a fine geographical scale, genetic diversity was unevenly distributed, restoration measurements for this aquatic crop should carefully take the habitat slope into account.
Data accessibility
All codes and polymorphism raw data are openly available from the Github repository: https://github.com/yixian185/Data-for-Trapa.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
