Study for evolutionary genomics of adaptive radiation: an analysis of speciation in endemic species of Bonin Islands.

本研究利用基因组技术对具有适应性辐射的博宁群岛特有植物进行了分析。采用rna - seq方法，对林菖菖树进行鉴定。grandicollum， C。用新一代测序仪对keiskeanum和Paraixeris denticulate进行分析。通过对两种特有种麻麻（crepiddiastrum）、C. linguifolium和C.grandicollum表达水平差异显著的基因进行检测，发现1个基因为黄酮类化合物生物合成的候选基因。此外，我们还将其与近缘属的一年生草本细齿副姜（Paraixeris denticulate）进行了比较，以检测它们之间表达水平不同的基因。结果，我们检测到两个参与血管分化的基因。

In this study, endemic plant species of Bonin Islands with adaptive radiation t have been analysed using the genome technology.Using RNAseq method, Crepidiastrum linguifolium，C。 grandicollum, C。keiskeanum, and Paraixeris denticulate were analyzed with the next generationsequencer. As a result of detecting the genes with significantly differing expression levels between two endemic species of Crepidiastrum, C. linguifolium and C.grandicollum, we found one gene which were the candidate gene for flavonoid biosynthesis. Further, we compared with Paraixeris denticulate, an annual herb of closely related genus of Crepidiastrum, for detecting genes with different of expression level between them. As a result, we detected two genes involved in vascular differentiation.