Depletion of abscisic acid levels in roots of flooded Carrizo citrange (Poncirus trifoliata L. Raf. × Citrus sinensis L. Osb.) plants is a stress-specific response associated to the differential expression of PYR/PYL/RCAR receptors

Arbona, Vicent; Zandalinas, Sara I.; Manzi, Matías; González-Guzmán, Miguel; Rodriguez, Pedro L.

doi:10.1007/s11103-017-0587-7

Cited by 43 publications

(48 citation statements)

References 48 publications

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“…Although the ABA-bound forms of CsPYL1 and SlPYL1 are not compatible with PP2C binding, it has been shown that these receptors are able to interact and inhibit PP2C activity under physiological conditions (Gonzalez-Guzman et al, 2014;Arbona et al, 2017). Moreover, we provide structural data characterizing this interaction ( Figure 1C) and biochemical data showing that CsPYL1 and SlPYL1 are able to interact and inhibit PP2C activity with IC 50 values similar to those measured for AtPYL1 (Supplemental Figure 6A).…”

Section: Proposed Mechanism For Aba Perception By Crop Receptorssupporting

confidence: 52%

Structure of Ligand-Bound Intermediates of Crop ABA Receptors Highlights PP2C as Necessary ABA Co-receptor

et al. 2017

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Abscisic acid (ABA) is the main phytohormone involved in adaptive crop responses to drought. ABA signaling relies on the family of pyrabactin resistance 1/PYR1-like/regulatory components of ABA receptors (PYR/PYL/RCAR), which upon ABA binding form high-affinity ternary complexes with clade A protein phosphatases type 2C (PP2Cs) and inhibit them (Cutler et al., 2010). This results in the activation of an SnRK2-dependent phosphorylation cascade affecting a high number of targets in the plant cells, regulating stomatal aperture and the expression of stress-responsive genes (Cutler et al., 2010).

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Section: Proposed Mechanism For Aba Perception By Crop Receptorssupporting

confidence: 52%

Structure of Ligand-Bound Intermediates of Crop ABA Receptors Highlights PP2C as Necessary ABA Co-receptor

et al. 2017

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“…In the current study, glutathione increased with the inception of hypoxic conditions but later decreased with exo-CySNO regulators in Daewon soybean, suggesting an improved defensive mechanism by both exogenous and endogenous factors. A reduction of glutathione post-anoxia has also been suggested by Arbona et al (2017).…”

Section: Discussionmentioning

confidence: 78%

Exogenous application of nitric oxide donors regulates short-term flooding stress in soybean

Khan

Imran

et al. 2019

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Short-term water submergence to soybean (Glycine max L.) create hypoxic conditions hindering plant growth and productivity. Nitric oxide (NO) is considered a stress-signalling and stress-evading molecule, however, little is known about its role during flooding stress. We elucidated the role of sodium nitroprusside (SNP) and S-nitroso L-cysteine (CySNO) as NO donor in modulation of flooding stress-related bio-chemicals and genetic determinants of associated nitrosative stress to Daewon and Pungsannamul soybean cultivars after 3 h and 6 h of flooding stress. The results showed that exogenous SNP and CysNO induced glutathione activity and reduced the resulting superoxide anion contents during short-term flooding in Pungsannamul soybean. The exo- SNP and CysNO triggered the endogenous S-nitrosothiols, and resulted in elevated abscisic acid (ABA) contents in both soybean cultivars overtime. To know the role of ABA and NO related genes in short-term flooding stress, the mRNA expression of S-nitrosoglutathione reductase (GSNOR1), NO overproducer1 (NOX1) and nitrate reductase (NR), Timing of CAB expression1 (TOC1), and ABA-receptor (ABAR) were assessed. The transcripts accumulation of GSNOR1, NOX1, and NR being responsible for NO homeostasis, were significantly high in response to early or later phases of flooding stress. ABAR and TOC1 showed a decrease in transcript accumulation in both soybean plants treated with exogenous SNP and CySNO. The exo- SNP and CySNO could impinge a variety of biochemical and transcriptional programs that can mitigate the negative effects of short-term flooding stress in soybean.

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“…TOC1 is acutely induced by ABA, and this induction advances the phase of TOC1 binding and modulates ABAR circadian expression (Legnaioli et al 2009); Syed et al (2015). This suggests that exo-SNP can regulate soybean plant responses by influencing ABA and possibly regulating the transcription of ABAR and TOC1 during short-term flooding stress (Arbona et al 2017).…”

Section: Discussionmentioning

confidence: 97%

Peer Review #1 of "Exogenous application of nitric oxide donors regulates short-term flooding stress in soybean (v0.1)"

2019

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Short-term water submergence to soybean (Glycine max L.) create hypoxic conditions hindering plant growth and productivity. Nitric oxide (NO) is considered a stress-signalling and stress-evading molecule, however, little is known about its role during flooding stress. We elucidated the role of sodium nitroprusside (SNP) and S-nitroso L-cysteine (CySNO) as NO donor in modulation of flooding stress-related bio-chemicals and genetic determinants of associated nitrosative stress to Daewon and Pungsannamul soybean cultivars after 3 h and 6 h of flooding stress. The results showed that exogenous SNP and CysNO induced glutathione activity and reduced the resulting superoxide anion contents during short-term flooding in Pungsannamul soybean. The exo-SNP and CysNO triggered the endogenous Snitrosothiols, and resulted in elevated abscisic acid (ABA) contents in both soybean cultivars overtime. To know the role of ABA and NO related genes in short-term flooding stress, the mRNA expression of S-nitrosoglutathione reductase (GSNOR1), NO overproducer1 (NOX) and nitrate reductase (NR), Timing of CAB expression1 (TOC1), and ABA-receptor (ABAR) were assessed. The transcripts accumulation of GSNOR1, NOX1, and NR being responsible for NO homeostasis, were significantly high in response to early or later phases of flooding stress. ABAR and TOC1 showed a decrease in transcript accumulation in both soybean plants treated with exogenous SNP and CySNO. The exo-SNP and CySNO could impinge a variety of biochemical and transcriptional programs that can mitigate the negative effects of short-term flooding stress in soybean.

show abstract

Depletion of abscisic acid levels in roots of flooded Carrizo citrange (Poncirus trifoliata L. Raf. × Citrus sinensis L. Osb.) plants is a stress-specific response associated to the differential expression of PYR/PYL/RCAR receptors

Cited by 43 publications

References 48 publications

Structure of Ligand-Bound Intermediates of Crop ABA Receptors Highlights PP2C as Necessary ABA Co-receptor

Structure of Ligand-Bound Intermediates of Crop ABA Receptors Highlights PP2C as Necessary ABA Co-receptor

Exogenous application of nitric oxide donors regulates short-term flooding stress in soybean

Peer Review #1 of "Exogenous application of nitric oxide donors regulates short-term flooding stress in soybean (v0.1)"

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