Evolution of DELLA function and signaling in land plants,Evolution and Development

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Evolution of DELLA function and signaling in land plants
Evolution and Development ( IF 2.6 ) Pub Date : 2021-01-11 , DOI: 10.1111/ede.12365
Alexandros Phokas ₁ , Juliet C Coates ₁

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DELLA proteins are master growth regulators that repress responses to a group of plant growth hormones called gibberellins (GAs). Manipulation of DELLA function and signaling was instrumental in the development of high‐yielding crop varieties that saved millions from starvation during the “Green Revolution.” Despite decades of extensive research, it is still unclear how DELLA function and signaling mechanisms evolved within the land plant lineage. Here, we review current knowledge on DELLA protein function with reference to structure, posttranslational modifications, downstream transcriptional targets, and protein–protein interactions. Furthermore, we discuss older and recent findings regarding the evolution of DELLA signaling within the land plant lineage, with an emphasis on bryophytes, and identify future avenues of research that would enable us to shed more light on the evolution of DELLA signaling. Unraveling how DELLA function and signaling mechanisms have evolved could enable us to engineer better crops in an attempt to contribute to mitigating the effects of global warming and achieving global food security.

中文翻译：

陆地植物中 DELLA 功能和信号的进化

DELLA 蛋白是主要的生长调节剂，可抑制对一组称为赤霉素 (GAs) 的植物生长激素的反应。对 DELLA 功能和信号的操纵有助于开发高产作物品种，在“绿色革命”期间使数百万人免于饥饿。尽管进行了数十年的广泛研究，但仍不清楚 DELLA 的功能和信号机制如何在陆地植物谱系中进化。在这里，我们回顾了有关 DELLA 蛋白质功能的当前知识，包括结构、翻译后修饰、下游转录靶点和蛋白质-蛋白质相互作用。此外，我们讨论了关于陆地植物谱系中 DELLA 信号演变的较早和最近的发现，重点是苔藓植物，并确定未来的研究途径，使我们能够更多地了解 DELLA 信号的演变。揭示 DELLA 功能和信号机制是如何演变的，可以使我们能够设计出更好的作物，以试图为减轻全球变暖的影响和实现全球粮食安全做出贡献。

更新日期：2021-01-11

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