High genetic and epigenetic variation of transposable elements: Potential drivers to rapid adaptive evolution for the noxious invasive weed Mikania micrantha.
High genetic and epigenetic variation of transposable elements: Potential drivers to rapid adaptive evolution for the noxious invasive weed Mikania micrantha.
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转座元件的高遗传和表观遗传变异：有毒入侵杂草薇甘菊快速适应性进化的潜在驱动因素
DOI：
10.1002/ece3.8075
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发表时间：
2021-10
影响因子：
2.6
通讯作者：
Wang T
中科院分区：
文献类型：
--
作者：
Su Y;Huang Q;Wang Z;Wang T
摘要为什么入侵物种能迅速适应新的环境是一个令人困惑的问题，被称为入侵物种的遗传悖论。这个悖论可以用转座因子（TE）的活性来解释，理论上，TE是产生遗传变异的强大突变力量。薇甘菊，一种有害的入侵杂草，在这个意义上提供了一个极好的机会来测试的解释。对21个入侵种群的遗传和表观遗传变异进行了研究。利用转座子显示（TD）和转座子甲基化显示（TMD）技术对中国南方的12个薇甘菊TE超家族进行了研究。结果表明，M.薇甘菊种群保持了几乎同样高水平的基于TE的遗传和表观遗传变异，并且它们已经在遗传和表观遗传上分化成亚种群。在300 m范围内，观察到类似的正空间遗传和表观遗传结构模式。6个和7个TE超家族表现出明显的遗传和表观遗传距离隔离（IBD）模式。总共鉴定了59个遗传和86个表观遗传适应性TE位点。其中，51个遗传和44个表观遗传位点被发现与25个环境变量（包括降水量，温度，植被覆盖度和土壤金属）。对25个转座子插入的基因进行了测序和基于同源性的注释，发现它们参与多种分子和细胞功能。我们的研究巩固了TE相关的遗传和表观遗传变异在M的快速适应和入侵中的重要性。薇甘菊
Abstract Why invasive species can rapidly adapt to novel environments is a puzzling question known as the genetic paradox of invasive species. This paradox is explainable in terms of transposable elements (TEs) activity, which are theorized to be powerful mutational forces to create genetic variation. Mikania micrantha, a noxious invasive weed, in this sense provides an excellent opportunity to test the explanation. The genetic and epigenetic variation of 21 invasive populations of M. micrantha in southern China have been examined by using transposon display (TD) and transposon methylation display (TMD) techniques to survey 12 TE superfamilies. Our results showed that M. micrantha populations maintained an almost equally high level of TE‐based genetic and epigenetic variation and they have been differentiated into subpopulations genetically and epigenetically. A similar positive spatial genetic and epigenetic structure pattern was observed within 300 m. Six and seven TE superfamilies presented significant genetic and epigenetic isolation by distance (IBD) pattern. In total, 59 genetic and 86 epigenetic adaptive TE loci were identified. Of them, 51 genetic and 44 epigenetic loci were found to correlate with 25 environmental variables (including precipitation, temperature, vegetation coverage, and soil metals). Twenty‐five transposon‐inserted genes were sequenced and homology‐based annotated, which are found to be involved in a variety of molecular and cellular functions. Our research consolidates the importance of TE‐associated genetic and epigenetic variation in the rapid adaptation and invasion of M. micrantha.
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影响因子：
1.6
作者：
Eliezer Bravo-Monzon, Angel;Gonzalez-Rodriguez, Antonio;Javier Espinosa-Garcia, Francisco
通讯作者：
Javier Espinosa-Garcia, Francisco
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通讯作者：
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作者：
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通讯作者：
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影响因子：
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作者：
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Lischer, Heidi E. L.