TickingClock的个人博客分享 http://blog.sciencenet.cn/u/TickingClock

博文

Molecular Plant:两个不同的Tof5等位基因的平衡选择分别作用于野生和栽培种大豆的高纬度适应

已有 628 次阅读 2021-10-25 10:28 |个人分类:每日摘要|系统分类:论文交流

Parallel selection of distinct Tof5 alleles drove the adaptation of cultivated and wild soybean to high latitude

第一作者Lidong Dong

第一单位广州大学

第一通讯Fanjiang Kong


 Abstract 


背景回顾Photoperiod responsiveness is a key factor limiting the geographic distribution of cultivated soybean and its wild ancestor


提出问题:In particular, the genetic basis of the adaptation in wild soybean remains poorly understood.


主要发现:Here, we identified the novel locus Time of Flowering 5 (Tof5), which promotes flowering and enhances adaptation to high latitudes in both wild and cultivated soybean, and determined that it encodes a homologue of Arabidopsis thaliana FRUITFULL (FUL). 


结果1-平衡选择Importantly, we suggest that different alleles of Tof5 have undergone parallel selection. The Tof5H1 allele was strongly selected by humans after the early domestication of cultivated soybean, while Tof5H2 allele was naturally selected in wild soybean, and in each case facilitating adaptation to high latitudes. 


结果2-上游调控因子:The key flowering repressor E1 suppress the transcription of Tof5 by binding to its promoter. 


结果3-下游靶基因:In turn, Tof5 physically associate with the promoters of two important FLOWERING LOCUS T (FT), FT2a and FT5a, to upregulate their transcription and promote flowering under long photoperiods. 


结论:Our findings provide insight into how wild soybean adapted to high latitudes through natural selection, and indicate that cultivated soybean underwent changes in the same gene but involving a distinct allele that was artificially selected after domestication.


6.jpg


 摘 要 


光周期响应是限制栽培种大豆及其野生祖先种地理分布的关键因素。目前,野生大豆适应性演化的遗传基础还不清楚。本文中,作者鉴定到了一个新的基因位点Tof5,该基因在野生种和栽培种大豆中均能够促进开花,增强对高纬度的适应,作者还发现Tof5基因是拟南芥FUL基因的同源基因。重要的是,作者发现不同的Tof5等位基因经历了平衡选择。其中,栽培种大豆的Tof5H1等位基因在早期驯化过程中,受到了人类的强选择;而野生大豆的Tof5H2等位基因则受到了自然选择,并且两种情况下均促进了各自群体对于高纬度的适应性。关键开花抑制子E1通过结合到Tof5的启动子,抑制Tof5的表达。转而,Tof5能够与大豆的FT2aFT5a基因的启动子物理互作,在长日照条件下促进这两个基因的转录,促进开花。本文的研究结果揭示了野生大豆是如何通过自然选择适应高纬度地区,并且发现了栽培种大豆在驯化过程中受到人工选择、适应高纬度的基因是同一个基因,但是等位基因并不一致。


 通讯作者 

** 孔凡江 **


个人简介:

1997年,东北农业大学,学士;

2002年,东北农业大学,硕士;

2006年,日本北海道大学,博士。


研究方向主要从事控制大豆重要农艺性状的基因发掘和调控网络和大豆分子设计育种研究。


doi: https://doi.org/10.1016/j.molp.2021.10.004


Journal: Molecular Plant

Published dateOctober 18, 2021



https://blog.sciencenet.cn/blog-3158122-1309363.html

上一篇:New Phytologist:黄瓜萜类合酶TPS基因家族鉴定及其对植食性昆虫的响应
下一篇:Plant Physiology:独角金内酯信号转导通过BES1抑制WOX4来调控形成层活性

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2021-12-2 03:01

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部