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《Plant Science Journal》 2017-01
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Screening cpDNA markers and preliminary study on the genetic diversity of Hydrilla verticillata from China

Fu Chun-Lin;Dai Xiao-Kang;Li Xiao-Yan;Liu Xing;Laboratory of Plant Systematics and Evolutionary Biology,College of Life Sciences,Wuhan University;Experimental Teaching Center,College of Life Sciences,Wuhan University;Tibet University,College of Sciences;  
The genetic characteristics of Hydrilla verticillata( L. f.) Royle were analyzed with chloroplast DNA( cpDNA) markers. Out of 18 candidate pairs,three effective molecular markers( trnL-trnF,trnH-psbA,RPL16) were screened,providing the molecular basis for further research. In total,12 haplotypes were discovered in 40 samples of H. verticillata,with135 mutation sites and haplotype diversity of 0. 9064. Haplotype-4 was found in regions SXHZ and YY,which were geographically distant. In addition,85. 79% of total variation existed between populations. Through asexual reproduction, H. verticillata could carry out rapid expansion. Geographical separation and various environments between populations have likely resulted in low gene flow. In addition, the genetic structure of H. verticillata has been profoundly affected by founder effect and genetic drift.
【Fund】: 国家自然科学基金面上项目(31170203)~~
【CateGory Index】: Q943.2
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