论文部分内容阅读
本研究将来自16个油茶品种的247个Colletotrichum fructicola的多基因序列进行遗传多样性分析,结果表明,247个C.fructicola多基因序列有21个单倍型,其中Hap2占总数的54.7%,Hap4占总数的34%,为两个主要的单倍型,来自所有16个油茶品种。基本上每一个油茶品种都存在C.fructicola独特的单倍型。遗传分化系数(Fst)表明不同品种来源菌株种群间存在一定的遗传分化。对所有品种种群进行中性检测及核苷酸不配对分析,发现小尺度空间的果生次盘孢菌经历大规模的种群扩张,群体间存在有效基因流。系统发育分析表明,来自不同品种的菌株散乱地分布在系统发育树中。
In this study, we analyzed the genetic diversity of 247 Colletotrichum fructicola from 16 Camellia oleifera varieties. The results showed that there were 21 haplotypes in 247 C.fructicola polygenes, Hap2 accounted for 54.7% of the total, Hap4 Accounting for 34% of the total, are two major haplotypes from all 16 Camellia species. Basically every Camellia species is unique to C. fructicola. The coefficient of genetic differentiation (Fst) indicated that there was some genetic differentiation among the strains of different strains. Neutral detection and nucleotide unpaired analysis of all the species populations showed that the microsporidia in small-scale space experienced large-scale population expansion and effective gene flow among populations. Phylogenetic analysis showed that strains from different varieties were randomly distributed in the phylogenetic tree.