生物
分生组织
多年生植物
拟南芥
不确定增长
进化生物学
确定性
长寿
基因
习惯
表型
拟南芥
植物
遗传学
突变体
心理学
数学分析
栽培
心理治疗师
数学
象形文字
作者
Siegbert Melzer,Frederic Lens,Jérôme Gennen,Steffen Vanneste,Antje Rohde,Tom Beeckman
出处
期刊:Nature Genetics
[Springer Nature]
日期:2008-11-09
卷期号:40 (12): 1489-1492
被引量:405
摘要
Siegbert Melzer and colleagues report that in Arabidopsis the absence of MADS box proteins SOC1 and FUL leads to phenotypes of perennial woody plants, with indeterminate meristems, secondary growth with wood formation, and recurrent growth cycles. Plants have evolved annual and perennial life forms as alternative strategies to adapt reproduction and survival to environmental constraints. In isolated situations, such as islands, woody perennials have evolved repeatedly from annual ancestors1. Although the molecular basis of the rapid evolution of insular woodiness is unknown, the molecular difference between perennials and annuals might be rather small, and a change between these life strategies might not require major genetic innovations2,3. Developmental regulators can strongly affect evolutionary variation4 and genes involved in meristem transitions are good candidates for a switch in growth habit. We found that the MADS box proteins SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) and FRUITFULL (FUL) not only control flowering time, but also affect determinacy of all meristems. In addition, downregulation of both proteins established phenotypes common to the lifestyle of perennial plants, suggesting their involvement in the prevention of secondary growth and longevity in annual life forms.
科研通智能强力驱动
Strongly Powered by AbleSci AI