Multifaceted mechanisms controlling grain disarticulation in the Poaceae

IF 8.3 2区 生物学 Q1 PLANT SCIENCES
Yunqing Yu , Elizabeth A. Kellogg
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引用次数: 0

Abstract

Cereal shattering and threshability, both involving disarticulation of grains from the mother plant, are important traits for cereal domestication and improvement. Recent studies highlighted diverse mechanisms influencing shattering and threshability, either through development of the disarticulation zone or floral structures enclosing or supporting the disarticulation unit. Differential lignification in the disarticulation zone is essential for rice shattering but not required for many other grasses. During shattering, the disarticulation zone undergoes either abscission leading to cell separation or cell breakage. Threshability can be affected by the morphology and toughness of the enclosing floral structures, and in some species, by the inherent weakness of the disarticulation zone. Fine-tuning shattering and threshability is essential for breeding wild and less domesticated cereals.

控制菊科植物谷粒脱节的多重机制
谷物的破碎性和脱粒性都涉及谷粒与母株的脱节,是谷物驯化和改良的重要性状。最近的研究强调了影响碎裂和脱粒性的各种机制,这些机制有的是通过脱粒区的发育,有的是通过包围或支撑脱粒单元的花结构。脱节区的不同木质化对水稻的破碎至关重要,但对许多其他禾本科植物来说却不是必需的。在破碎过程中,脱节区要么发生脱落导致细胞分离,要么发生细胞破碎。脱粒性会受到包围花结构的形态和韧性的影响,在某些物种中,脱节区的固有弱点也会影响脱粒性。对破碎性和脱粒性进行微调对于培育野生谷物和驯化程度较低的谷物至关重要。
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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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