Post‐translational control of <scp>ABA</scp> signalling: the roles of protein phosphorylation and ubiquitination

Yang, Wenqi; Zhang, Wei; Wang, Xiaoxue

doi:10.1111/pbi.12652

Cited by 130 publications

(94 citation statements)

References 138 publications

(237 reference statements)

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“…SnRK2.8 belongs to the serine/threonine kinase superfamily, and phosphorylated SnRK2s phosphorylate key transcription factors that mediate ABA responses (Lee et al, ; Mustilli, Merlot, Vavasseur, Fenzi, & Giraudat, ; Nakashima et al, ; Umezawa et al, ; Umezawa, Yoshida, Maruyama, Yamaguchi‐Shinozaki, & Shinozaki, ). Moreover, ABI3 is phosphorylated by SnRK2s (Kobayashi et al, ; Yang, Zhang, & Wang, ). Thus, a positive feedback loop from JMJ30‐SnRK2.8 to ABI3 may lock ABA signalling in the ON state to keep reactivating the stress‐tolerance programme.…”

Section: Discussionmentioning

confidence: 99%

Abscisic acid‐dependent histone demethylation during postgermination growth arrest in Arabidopsis

Ichihashi

Suzuki

et al. 2019

Plant Cell & Environment

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After germination, seedlings undergo growth arrest in response to unfavourable conditions, a critical adaptation enabling plants to survive harsh environments. The plant hormone abscisic acid (ABA) plays a key role in this arrest. To arrest growth, ABA‐dependent transcription factors change gene expression patterns in a flexible and reversible manner. Although the control of gene expression has important roles in growth arrest, the epigenetic mechanisms in the response to ABA are not fully understood. Here, we show that the histone demethylases JUMONJI‐C domain‐containing protein 30 (JMJ30) and JMJ32 control ABA‐mediated growth arrest in Arabidopsis thaliana. During the postgermination stage (2–3 days after germination), the ABA‐dependent transcription factor ABA‐insensitive3 (ABI3) activates the expression of JMJ30 in response to ABA. JMJ30 then removes a repressive histone mark, H3 lysine 27 trimethylation (H3K27me3), from the SNF1‐related protein kinase 2.8 (SnRK2.8) promoter, and hence activates SnRK2.8 expression. SnRK2.8 encodes a kinase that activates ABI3 and is responsible for JMJ30‐ and JMJ32‐mediated growth arrest. A feed‐forward loop involving the ABI3 transcription factor, JMJ histone demethylases, and the SnRK2.8 kinase fine‐tunes ABA‐dependent growth arrest in the postgermination phase. Our findings highlight the importance of the histone demethylases in mediating adaptation of plants to the environment.

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Section: Discussionmentioning

confidence: 99%

Abscisic acid‐dependent histone demethylation during postgermination growth arrest in Arabidopsis

Ichihashi

Suzuki

et al. 2019

Plant Cell & Environment

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“…This suggests that ETR1 His kinase activity and phosphotransfer have alternative roles outside of ethylene signal transduction. Because ABA signaling involves changes in the phosphorylation of various proteins (Cutler et al, 2010;Umezawa et al, 2010;Yang et al, 2017), it is possible that one such role for the ETR1 His kinase, and perhaps the ETR2 Ser/Thr kinase, is to modulate ABA signaling. Support for this is the report that Ser/Thr kinase activity in the NTHK1 (for N. tabacum HIS KINASE1) subfamily 2 ethylene receptor affects the sensitivity of tobacco (N. tabacum) to NaCl stress (Chen et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…A large body of research has led to models for ABA signaling (Cutler et al, 2010;Umezawa et al, 2010;Yang et al, 2017). In these models, ABA binds to PYRABACTIN RESISTANCE1 (PYR1) and PYR1-like (PYL) receptors leading to inactivation of some type 2C protein phosphatases from group A (PP2CA; Fujita et al, 2009;Ma et al, 2009;Melcher et al, 2009;Miyazono et al, 2009;Nishimura et al, 2009;Park et al, 2009).…”

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confidence: 99%

Ethylene Receptors Signal via a Noncanonical Pathway to Regulate Abscisic Acid Responses

et al. 2017

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“…Free PP2Cs can also interact with other effectors and regulators (Park et al, 2009;Umezawa et al, 2010). Further, phosphatases and ubiquitin ligases act as a layer of post-translational regulation of most elements of this system whose biological function we are only starting to decipher (Mazzucotelli et al, 2008;Yang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

ABA signalling manipulation suppresses senescence of a leafy vegetable stored at room temperature

Miret

Munné‐Bosch

Dijkwel

2017

Plant Biotechnology Journal

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SummaryPostharvest senescence and associated stresses limit the shelf life and nutritional value of vegetables. Improved understanding of these processes creates options for better management. After harvest, controlled exposure to abiotic stresses and/or exogenous phytohormones can enhance nutraceutical, organoleptic and commercial longevity traits. With leaf senescence, abscisic acid (ABA) contents progressively rise, but the actual biological functions of this hormone through senescence still need to be clarified. Postharvest senescence of detached green cabbage leaves (Brassica oleracea var. capitata) was characterized under cold (4 °C) and room temperature (25 °C) storage conditions. Hormonal profiling of regions of the leaf blade (apical, medial, basal) revealed a decrease in cytokinins contents during the first days under both conditions, while ABA only increased at 25 °C. Treatments with ABA and a partial agonist of ABA (pyrabactin) for 8 days did not lead to significant effects on water and pigment contents, but increased cell integrity and altered 1‐aminocyclopropane‐1‐carboxylic acid (ACC) and cytokinins contents. Transcriptome analysis showed transcriptional regulation of ABA, cytokinin and ethylene metabolism and signalling; proteasome components; senescence regulation; protection of chloroplast functionality and cell homeostasis; and suppression of defence responses (including glucosinolates and phenylpropanoids metabolism). It is concluded that increasing the concentration of ABA (or its partial agonist pyrabactin) from the start of postharvest suppresses senescence of stored leaves, changes the transcriptional regulation of glucosinolates metabolism and down‐regulates biotic stress defence mechanisms. These results suggest a potential for manipulating ABA signalling for improving postharvest quality of leafy vegetables stored at ambient temperature.

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Post‐translational control of ABA signalling: the roles of protein phosphorylation and ubiquitination

Cited by 130 publications

References 138 publications

Abscisic acid‐dependent histone demethylation during postgermination growth arrest in Arabidopsis

Abscisic acid‐dependent histone demethylation during postgermination growth arrest in Arabidopsis

Ethylene Receptors Signal via a Noncanonical Pathway to Regulate Abscisic Acid Responses

ABA signalling manipulation suppresses senescence of a leafy vegetable stored at room temperature

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