Ancestral gene duplications in mosses characterized by integrated phylogenomic analyses,Journal of Systematics and Evolution

当前位置： X-MOL 学术 › J. Syst. Evol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Ancestral gene duplications in mosses characterized by integrated phylogenomic analyses
Journal of Systematics and Evolution ( IF 3.4 ) Pub Date : 2020-09-10 , DOI: 10.1111/jse.12683
Bei Gao _{1,

2,

3} , Moxian Chen ₄ , Xiaoshuang Li ₃ , Yuqing Liang _{3,

5} , Daoyuan Zhang ₃ , Andrew J. Wood ₆ , Melvin J. Oliver ₇ , Jianhua Zhang _{2,

8}

Affiliation

Mosses (Bryophyta) are a key group occupying an important phylogenetic position in land plant (embryophyte) evolution. The class Bryopsida represents the most diversified lineage, containing more than 95% of modern mosses, whereas other classes are species-poor. Two branches with large numbers of gene duplications were elucidated by phylogenomic analyses, one in the ancestry of all mosses and another before the separation of the Bryopsida, Polytrichopsida, and Tetraphidopsida. The analysis of the phylogenetic progression of duplicated paralogs retained on genomic syntenic regions in the Physcomitrella patens genome confirmed that the whole-genome duplication events WGD1 and WGD2 were re-recognized as the ψ event and the Funarioideae duplication event, respectively. The ψ polyploidy event was tightly associated with the early diversification of Bryopsida, in the ancestor of Bryidae, Dicranidae, Timmiidae, and Funariidae. Together, four branches with large numbers of gene duplications were unveiled in the evolutionary past of P. patens. Gene retention patterns following the four large-scale duplications in different moss lineages were analyzed and discussed. Recurrent significant retention of stress-related genes may have contributed to their adaption to distinct ecological environments and the evolutionary success of this early-diverging land plant lineage.

中文翻译：

以综合系统基因组分析为特征的苔藓中的祖先基因重复

苔藓（苔藓植物）是陆生植物（胚生植物）进化中占据重要系统发育位置的关键类群。苔藓纲类代表了最多样化的谱系，包含超过 95% 的现代苔藓，而其他类则物种贫乏。通过系统基因组分析阐明了具有大量基因重复的两个分支，一个在所有苔藓的祖先中，另一个在苔藓纲、多毛纲和四翅目分离之前。小立球菌基因组同线区域保留的重复旁系同源物的系统发育进展分析基因组证实全基因组重复事件WGD1和WGD2分别被重新识别为ψ事件和Funarioideae重复事件。ψ 多倍体事件与在 Bryidae、Dicranidae、Timmiidae 和 Funariidae 的祖先中的 Bryopsida 的早期多样化密切相关。一起，在P. patens的进化历史中揭示了四个具有大量基因重复的分支。分析和讨论了不同苔藓谱系中四个大规模重复后的基因保留模式。应激相关基因的反复显着保留可能有助于它们适应不同的生态环境以及这种早期分化的陆地植物谱系的进化成功。

更新日期：2020-09-10

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11