Dry side of the core: a meta-analysis addressing the original nature of the ABA signalosome at the onset of seed imbibition

Frontiers in Plant Science

Plant Science

Thorben Krüger¹  Guillaume Née¹ 

[1] Institute for Plant Biology and Biotechnology, University of Münster, Münster, Germany;

关键词: abscisic acid (ABA);    seed germination;    protein post-translational modifications (PTMs);    molecular signalling;    proteomics;   

DOI  :  10.3389/fpls.2023.1192652

 received in 2023-03-23, accepted in 2023-06-08,  发布年份 2023

来源: Frontiers

【 摘 要 】

The timing of seedling emergence is a major agricultural and ecological fitness trait, and seed germination is controlled by a complex molecular network including phytohormone signalling. One such phytohormone, abscisic acid (ABA), controls a large array of stress and developmental processes, and researchers have long known it plays a crucial role in repressing germination. Although the main molecular components of the ABA signalling pathway have now been identified, the molecular mechanisms through which ABA elicits specific responses in distinct organs is still enigmatic. To address the fundamental characteristics of ABA signalling during germination, we performed a meta-analysis focusing on the Arabidopsis dry seed proteome as a reflexion basis. We combined cutting-edge proteome studies, comparative functional analyses, and protein interaction information with genetic and physiological data to redefine the singular composition and operation of the ABA core signalosome from the onset of seed imbibition. In addition, we performed a literature survey to integrate peripheral regulators present in seeds that directly regulate core component function. Although this may only be the tip of the iceberg, this extended model of ABA signalling in seeds already depicts a highly flexible system able to integrate a multitude of information to fine-tune the progression of germination.

【 授权许可】

Unknown   
Copyright © 2023 Née and Krüger