检索结果-南通市图书馆

Generation and classification of transcriptomes in two croomia species and molecular evolution of CYC/TB1 genes in Stemonaceae

引用

Plant Diversity 2018年第6期40卷 253-264页

作者： Ruisen Lu Wuqin Xu Qixiang Lu Pan Li Jocelyn Losh Faiza Hina Enxiang Li Yingxiong Qiu Key Laboratory of Conservation Biology for Endangered Wildlife of the Ministry of Education and College of Life Sciences Zhejiang University College of Life Sciences Nanchang University

The genus croomia(Stemonaceae) is an excellent model for studying the evolution of the Eastern Asia(EA)-Eastern North America(ENA) floristic disjunction and the genetic mechanisms of floral zygomorphy formation. In addition to the presence of both actinomorphic and zygomorphic flowers within the genus, species are disjunctively distributed between EA and ENA. However, due to the limited availability of genomic resources, few studies of croomia have examined these questions. In this study,we sequenced the floral and leaf transcriptomes of the zygomorphic flowered croomia heterosepala and the actinomorphic flowered croomia japonica, and used comparative genomic approaches to investigate the transcriptome evolution of the two closely related species. The sequencing and de novo assembly of transcriptomes from flowers of C. heterosepala(ChFlower), flowers of C. japonica(CjFlower), and leaves of C. japonica(CjLeaf) yielded 57,193, 62,131 and 64,448 unigenes, respectively. In addition, estimation of Ka/Ks ratios for 11,566 potential orthologous groups between ChFlower and CjFlower revealed that only six pairs had Ka/Ks ratios significantly greater than 1 and are likely under positive selection. A total of 429 single copy nuclear genes(SCNGs) and 21,460 expression sequence tags-simple sequence repeats(ESTSSRs) were identified in this study. Specifically, we identified seven CYC/TB1-like genes from Stemonaceae. Phylogenetic and molecular evolution analyses indicated that these CYC/TB1-like genes formed a monophyletic clade(SteTBL1) and were subject to strong purifying selection. The shifts of floral symmetry in Stemonaceae do not appear to be correlated with TBL copy number.

关键词： croomia Transcriptome SCNGs EST-SSRs Flower symmetry CYC/TB1

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：