Auxins and grass shoot architecture: how the most important hormone makes the most important plants.
Auxins and grass shoot architecture: how the most important hormone makes the most important plants.
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DOI：
10.1093/jxb/erad288
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发表时间：
2023-12-01
影响因子：
6.9
通讯作者：
Bennett, Tom
中科院分区：
文献类型：
--
作者：
Wakeman, Alex;Bennett, Tom
谷物是人类为了获取粮食而种植的一组草。人类消耗的大部分卡路里都来自这些谷物。这些谷物的产生是一系列层次生殖结构发展的结果，这些结构形成了禾本科植物独特的芽结构。由于牧草生长发育的时空复杂性，其协调性受到包括关键激素生长素在内的基因和信号网络的严格控制。因此，激素调控已被确定为增加谷类作物产量并最终提高全球粮食安全的一种有希望的潜在方法。最近的工作将大量生长素研究从模式植物转化为谷类作物物种，揭示了生长素生物合成、运输和信号传导对草芽结构发育的贡献。这篇评论讨论了这个仍然成熟的知识基础，并探讨了生长素生物学的变化可能是一个致病因子的关键草种之间的芽结构的差异的演变，或可能支持未来的选择性育种的谷类作物。我们回顾了最近的进展，了解生长素生物学在禾本科植物，并探讨了生长素生物学的变化，导致不同的草种之间的芽结构的可能性。
Cereals are a group of grasses cultivated by humans for their grain. It is from these cereal grains that the majority of all calories consumed by humans are derived. The production of these grains is the result of the development of a series of hierarchical reproductive structures that form the distinct shoot architecture of the grasses. Being spatiotemporally complex, the coordination of grass shoot development is tightly controlled by a network of genes and signals, including the key phytohormone auxin. Hormonal manipulation has therefore been identified as a promising potential approach to increasing cereal crop yields and therefore ultimately global food security. Recent work translating the substantial body of auxin research from model plants into cereal crop species is revealing the contribution of auxin biosynthesis, transport, and signalling to the development of grass shoot architecture. This review discusses this still-maturing knowledge base and examines the possibility that changes in auxin biology could have been a causative agent in the evolution of differences in shoot architecture between key grass species, or could underpin the future selective breeding of cereal crops. We review recent advances in understanding auxin biology in the grass family, and explore the possibility that changes in auxin biology led to differences in shoot architecture between grass species.
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