The diversification of the shoot branching system: A quantitative and comparative perspective in meristem determinacy

IF 8.3 2区 生物学 Q1 PLANT SCIENCES
Jiajia Li , Xiani Yao , Huan Lai , Xuelian Zhang , Jinshun Zhong
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引用次数: 0

Abstract

Reiterative shoot branching largely defines important yield components of crops and is essentially controlled by programs that direct the initiation, dormancy release, and differentiation of meristems in the axils of leaves. Here, we focus on meristem determinacy, defining the number of reiterations that shape the shoot architectures and exhibit enormous diversity in a wide range of species. The meristem determinacy per se is hierarchically complex and context-dependent for the successively emerged meristems, representing a crucial mechanism in shaping the complexity of the shoot branching. In addition, we have highlighted that two key components of axillary meristem developmental programs may have been co-opted in controlling flower/ear number of an axillary inflorescence in legumes/maize, hinting at the diversification of axillary-meristem-patterning programs in different lineages. This begs the question how axillary meristem patterning programs may have diversified during plant evolution and hence helped shape the rich variation in shoot branching systems.

芽分枝系统的多样化:分生组织决定性的定量和比较视角。
芽的重复分枝在很大程度上决定了农作物的重要产量成分,而且基本上是由叶腋中的分生组织的萌发、休眠释放和分化程序控制的。在这里,我们将重点放在分生组织的决定性上,它定义了形成嫩枝结构的重复次数,并在多种物种中表现出巨大的多样性。对于连续出现的分生组织来说,分生组织决定性本身就具有层次复杂性和环境依赖性,是形成嫩枝分枝复杂性的关键机制。此外,我们还强调了腋生分生组织发育程序的两个关键组成部分可能在控制豆科植物/玉米腋生花序的花/穗数量时被共同使用,这暗示了腋生分生组织模式程序在不同品系中的多样化。这就提出了一个问题:在植物进化过程中,腋生分生组织模式程序是如何实现多样化的,从而帮助形成了丰富的芽分枝系统变异?
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Current opinion in plant biology
Current opinion in plant biology 生物-植物科学
CiteScore
16.30
自引率
3.20%
发文量
131
审稿时长
6-12 weeks
期刊介绍: Current Opinion in Plant Biology builds on Elsevier's reputation for excellence in scientific publishing and long-standing commitment to communicating high quality reproducible research. It is part of the Current Opinion and Research (CO+RE) suite of journals. All CO+RE journals leverage the Current Opinion legacy - of editorial excellence, high-impact, and global reach - to ensure they are a widely read resource that is integral to scientists' workflow.
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