Post-translational control of ABA signalling: the roles of protein phosphorylation and ubiquitination.
TLDR
Post‐translational modifications, including dephosphorylation, phosphorylation and ubiquitination, play important roles in regulating ABA signalling.Abstract:
The plant phytohormone abscisic acid (ABA) plays significant roles in integrating environmental signals with embryogenesis, germination, seedling establishment, the floral transition and the adaptation of plants to stressful environments by modulating stomatal movement and stress-responsive gene expression. ABA signalling consists of ABA perception, signal transduction and ABA-induced responses. ABA receptors such as members of the PYR/PYL family, group A type 2C protein phosphatases (as negative regulators), SnRK2 protein kinases (as positive regulators), bZIP transcription factors and ion channels are key components of ABA signalling. Post-translational modifications, including dephosphorylation, phosphorylation and ubiquitination, play important roles in regulating ABA signalling. In this review, we focus on the roles of post-translational modifications in ABA signalling. The studies presented provide a detailed picture of the ABA signalling network.read more
Citations
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Crosstalk between nitric oxide (NO) and abscisic acid (ABA) signalling molecules in higher plants
TL;DR: A comprehensive review on the interaction between NO and abscisic acid can be found in this paper, where the authors provide a comprehensive overview of the current knowledge on NO and ABA.
Ubiquitin lysine 63 chain-forming ligases regulate apical dominance in Arabidopsis
Xiao-Jun Yin,Sara Volk,Karin Ljung,Norbert Mehlmer,Karel Dolezal,Karel Dolezal,Franck Anicet Ditengou,Shigeru Hanano,Seth J. Davis,Elmon Schmelzer,Göran Sandberg,Markus Teige,Klaus Palme,Cecile M. Pickart,Andreas Bachmair +14 more
TL;DR: Modification of proteins by Lys-63–linked multiubiquitin chains is thus important for hormone-regulated, basic plant architecture.
Journal ArticleDOI
Auxin-Abscisic Acid Interactions in Plant Growth and Development.
TL;DR: This review focuses on two phytohormones, abscisic acid (ABA) and auxin, and in depth analyses of interactions between auxin and ABA, focusing on interactions in individual tissues and how these interactions are occurring where possible.
Journal ArticleDOI
SCFAtPP2-B11 modulates ABA signaling by facilitating SnRK2.3 degradation in Arabidopsis thaliana.
TL;DR: Results reveal a novel mechanism through which AtPP2-B11 specifically degrades SnRK2.3 to attenuate ABA signaling and the abiotic stress response in Arabidopsis.
Journal ArticleDOI
Abscisic acid promotes jasmonic acid biosynthesis via a 'SAPK10-bZIP72-AOC' pathway to synergistically inhibit seed germination in rice (Oryza sativa).
Yifeng Wang,Yuxuan Hou,Jiehua Qiu,Huimei Wang,Shuang Wang,Shuang Wang,Liqun Tang,Xiaohong Tong,Jian Zhang +8 more
TL;DR: The identification of a ‘SAPK10‐bZIP72‐AOC’ pathway, through which ABA promotes JA biosynthesis to synergistically inhibit rice seed germination is reported, shedding a novel insight into the molecular networks of ABA–JA synergistic interaction during rice seed Germination.
References
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Significance of Inducible Defense-related Proteins in Infected Plants
TL;DR: The evolutionary conservation of similar defense-related proteins in monocots and dicots, but also their divergent occurrence in other conditions, suggest that these proteins serve essential functions in plant life, whether in defense or not.
Journal ArticleDOI
Abscisic Acid: Emergence of a Core Signaling Network
TL;DR: A new model for ABA action has been proposed and validated, in which the soluble PYR/PYL/RCAR receptors function at the apex of a negative regulatory pathway to directly regulate PP2C phosphatases, which in turn directly regulate SnRK2 kinases.
Journal ArticleDOI
Abscisic Acid Inhibits Type 2C Protein Phosphatases via the PYR/PYL Family of START Proteins
Sang-Youl Park,Pauline Fung,Noriyuki Nishimura,Davin R. Jensen,Hiroaki Fujii,Yang Zhao,Shelley Lumba,Julia Santiago,Americo Rodrigues,Tsz-fung Freeman Chow,Simon E. Alfred,Dario Bonetta,Ruth R. Finkelstein,Nicholas J. Provart,Darrell Desveaux,Pedro L. Rodriguez,Peter McCourt,Jian-Kang Zhu,Julian I. Schroeder,Brian F. Volkman,Sean R. Cutler +20 more
TL;DR: PYR/PYLs are ABA receptors functioning at the apex of a negative regulatory pathway that controls ABA signaling by inhibiting PP2Cs, illustrating the power of the chemical genetic approach for sidestepping genetic redundancy.
Journal ArticleDOI
Regulators of PP2C Phosphatase Activity Function as Abscisic Acid Sensors
Yue Ma,Izabela Szostkiewicz,Arthur Korte,Danièle Moes,Yi Yang,Alexander Christmann,Erwin Grill +6 more
TL;DR: This study identifies interactors of ABI1 and ABI2 which are named regulatory components of ABA receptor (RCARs) in Arabidopsis and suggests that the ABA receptors may be a class of closely related complexes, which may explain previous difficulties in establishing its identity.
Journal ArticleDOI
Plant Stomata Function in Innate Immunity against Bacterial Invasion
TL;DR: Examination of stomatal guard cells of Arabidopsis provides evidence that supports a model in which stomata, as part of an integral innate immune system, act as a barrier against bacterial infection.
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