Jasmonic acid promotes leaf senescence through MYC2-mediated repression of CATALASE2 expression in Arabidopsis

Zhang, Yu; Ji, Tong-Tong; Li, Tingting; Tian, Yazhou; Wang, Linfeng; Liu, Wen‐Cheng

doi:10.1016/j.plantsci.2020.110604

Cited by 62 publications

(48 citation statements)

References 47 publications

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“…This mechanism was reported to regulate pathogen-induced cell death in tobacco . CATs are involved in root growth (Yang et al, 2019), leaf development and senescence (Mhamdi et al, 2010;Zhang Y. et al, 2020), as well as shoot, ovule, pollen, and seed development (Sharma and Ahmad, 2014;Su et al, 2018;Palma et al, 2020).…”

Section: Characterization Of Key Antioxidant Enzymesmentioning

confidence: 99%

“…Recently, MYC2 was experimentally approved to bind to the promoter of Arabidopsis CAT2, leading to its downregulation during leaf senescence in a JA-dependent manner. Such downregulation promotes H 2 O 2 accumulation and the activation of senescenceassociated genes (Zhang Y. et al, 2020). Finally, CAT2 expression is also regulated by CDF4 (CYCLING DOF FACTOR 4) during senescence (Xu et al, 2020).…”

Section: Transcriptional and Post-transcriptional Regulation Of Antioxidant Enzymesmentioning

confidence: 99%

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Signaling Toward Reactive Oxygen Species-Scavenging Enzymes in Plants

et al. 2021

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Reactive oxygen species (ROS) are signaling molecules essential for plant responses to abiotic and biotic stimuli as well as for multiple developmental processes. They are produced as byproducts of aerobic metabolism and are affected by adverse environmental conditions. The ROS content is controlled on the side of their production but also by scavenging machinery. Antioxidant enzymes represent a major ROS-scavenging force and are crucial for stress tolerance in plants. Enzymatic antioxidant defense occurs as a series of redox reactions for ROS elimination. Therefore, the deregulation of the antioxidant machinery may lead to the overaccumulation of ROS in plants, with negative consequences both in terms of plant development and resistance to environmental challenges. The transcriptional activation of antioxidant enzymes accompanies the long-term exposure of plants to unfavorable environmental conditions. Fast ROS production requires the immediate mobilization of the antioxidant defense system, which may occur via retrograde signaling, redox-based modifications, and the phosphorylation of ROS detoxifying enzymes. This review aimed to summarize the current knowledge on signaling processes regulating the enzymatic antioxidant capacity of plants.

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Section: Characterization Of Key Antioxidant Enzymesmentioning

confidence: 99%

Section: Transcriptional and Post-transcriptional Regulation Of Antioxidant Enzymesmentioning

confidence: 99%

Signaling Toward Reactive Oxygen Species-Scavenging Enzymes in Plants

et al. 2021

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“…The 5-day-old seedlings were transferred to half strength 1/2 MS medium without or with 300 mM mannitol for 5 days, and then used for DAB or NBT staining to assay H 2 O 2 or superoxide anion accumulation as we described previously [ 37 , 38 , 39 ]. For DAB staining, the seedlings were incubated in freshly prepared DAB staining solution (1 mg/mL DAB and 0.1% Tween 20 in 10 mM Na 2 HPO 4 ) for 8 h, and then rinsed with 70% ethanol for several times to remove the chlorophyll.…”

Section: Methodsmentioning

confidence: 99%

“…Chlorophyll was removed by using 70% ethanol, and then the images of the leaves were captured using a digital camera. Three independent biological replicates were performed, and the relative intensity of DAB or NBT staining was quantitatively analyzed according to our previously reported method [ 37 ].…”

Section: Methodsmentioning

confidence: 99%

“…The GUS histochemical staining experiment was performed as we previously described [ 37 ]. Ten-day-old CAND2::GUS transgenic seedlings were treated with 250, 275, or 300 mM mannitol for 12 h, and incubated at 37 °C in GUS staining solution (100 mM sodium phosphate buffer, pH 7.5, 10 mM EDTA, 0.5 mM potassium ferricyanide, 0.5 mM potassium ferrocyanide, 1 mM 5-bromochloro-3-indolyl-b- d -glucuronide, and 0.1% Triton X-100).…”

Section: Methodsmentioning

confidence: 99%

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CAND2/PMTR1 Is Required for Melatonin-Conferred Osmotic Stress Tolerance in Arabidopsis

Wang

Li²,

Zhang

et al. 2021

IJMS

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Osmotic stress severely inhibits plant growth and development, causing huge loss of crop quality and quantity worldwide. Melatonin is an important signaling molecule that generally confers plant increased tolerance to various environmental stresses, however, whether and how melatonin participates in plant osmotic stress response remain elusive. Here, we report that melatonin enhances plant osmotic stress tolerance through increasing ROS-scavenging ability, and melatonin receptor CAND2 plays a key role in melatonin-mediated plant response to osmotic stress. Upon osmotic stress treatment, the expression of melatonin biosynthetic genes including SNAT1, COMT1, and ASMT1 and the accumulation of melatonin are increased in the wild-type plants. The snat1 mutant is defective in osmotic stress-induced melatonin accumulation and thus sensitive to osmotic stress, while exogenous melatonin enhances the tolerance of the wild-type plant and rescues the sensitivity of the snat1 mutant to osmotic stress by upregulating the expression and activity of catalase and superoxide dismutase to repress H2O2 accumulation. Further study showed that the melatonin receptor mutant cand2 exhibits reduced osmotic stress tolerance with increased ROS accumulation, but exogenous melatonin cannot revert its osmotic stress phenotype. Together, our study reveals that CADN2 functions necessarily in melatonin-conferred osmotic stress tolerance by activating ROS-scavenging ability in Arabidopsis.

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Hormonal Response in Plants Influenced by Reactive Oxygen Species

Arshad

Mustafa

2023

Reactive Oxygen Species

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Jasmonic acid promotes leaf senescence through MYC2-mediated repression of CATALASE2 expression in Arabidopsis

Cited by 62 publications

References 47 publications

Signaling Toward Reactive Oxygen Species-Scavenging Enzymes in Plants

Signaling Toward Reactive Oxygen Species-Scavenging Enzymes in Plants

CAND2/PMTR1 Is Required for Melatonin-Conferred Osmotic Stress Tolerance in Arabidopsis

Hormonal Response in Plants Influenced by Reactive Oxygen Species

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