生物
拟南芥
拟南芥
细胞生物学
转录因子
WRKY蛋白质结构域
多形马尔汉坦
平衡
突变体
遗传学
基因
作者
Tai‐Hsi Wu,Shalini Krishnamoorthi,Kulaporn Boonyaves,Isam Al-Darabsah,Richalynn Leong,Alan M. Jones,Kimitsune Ishizaki,Kang‐Ling Liao,Daisuke Urano
出处
期刊:Molecular Plant
[Elsevier]
日期:2022-12-01
卷期号:15 (12): 1889-1907
被引量:5
标识
DOI:10.1016/j.molp.2022.10.020
摘要
The core G protein signaling module, which consists of Gα and extra-large Gα (XLG) subunits coupled with the Gβγ dimer, is a master regulator of various stress responses. In this study, we compared the basal and salt stress-induced transcriptomic, metabolomic and phenotypic profiles in Gα, Gβ, and XLG-null mutants of two plant species, Arabidopsis thaliana and Marchantia polymorpha, and showed that G protein mediates the shift of transcriptional and metabolic homeostasis to stress readiness status. We demonstrated that such stress readiness serves as an intrinsic protection mechanism against further stressors through enhancing the phenylpropanoid pathway and abscisic acid responses. Furthermore, WRKY transcription factors were identified as key intermediates of G protein-mediated homeostatic shifts. Statistical and mathematical model comparisons between A. thaliana and M. polymorpha revealed evolutionary conservation of transcriptional and metabolic networks over land plant evolution, whereas divergence has occurred in the function of plant-specific atypical XLG subunit. Taken together, our results indicate that the shifts in transcriptional and metabolic homeostasis at least partially act as the mechanisms of G protein-coupled stress responses that are conserved between two distantly related plants.
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