Signal crosstalk between nitric oxide and hydrogen sulfide may be involved in hydrogen peroxide-induced thermotolerance in maize seedlings

Li, Z. G.; Luo, L. J.; Sun, Yuanyuan

doi:10.1134/s1021443715030127

Cited by 51 publications

(16 citation statements)

References 27 publications

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“…It has been documented that there is crosstalk between NO and H 2 S in regulating the responses of plants to stress. 18 It has also been documented that there is also crosstalk between H 2 O 2 and H 2 S in regulating plant growth and development. 19 However, the relationships among H 2 O 2 , NO, and H 2 S in the process of JA-regulated AsA/DHA ratio are still unclear.…”

Section: Resultsmentioning

confidence: 99%

Jasmonic acid-induced hydrogen sulfide activates MEK1/2 in regulating the redox state of ascorbate in Arabidopsis thaliana leaves

Shan

Sun

Zhou

et al. 2019

Plant Signaling & Behavior

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In this paper, we investigated the relationship between hydrogen sulfide (H 2 S) and mitogen-activated protein kinase kinase (MEK1/2) in jasmonic acid (JA)-regulated the redox state of ascorbate in the leaves of Arabidopsis thaliana. The results showed that JA significantly enhanced the phosphorylation level of MEK1/2, the production of endogenous H 2 S and the ratio of reduced ascorbate (AsA) to dehydroascorbate (DHA) (AsA/DHA) in wild type of A. thaliana (WT). However, there were no obvious effects of JA on above indicators in H 2 S synthetic mutant of A. thaliana (MT). H 2 S scavenger hypotaurine (HT) markedly reduced JA-induced the phosphorylation level of MEK1/2, AsA/DHA ratio and the production of endogenous H 2 S in WT. Application of H 2 S donor sodium hydrosulfide (NaHS) to JA-treated MT plants increased above indicators. Application of NaHS to (HT+JA)treated MT plants did not reverse the effects of HT on above JA-induced indicators. MEK1/2 inhibitor PD98059 decreased JA-induced AsA/DHA ratio and the transcript levels and the activities of ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and L-galactono-1,4-lactone dehydrogenase (GalLDH) in WT. However, PD98059 had no effect on JA-induced the production of endogenous H 2 S in WT. Compared with Control-MT, there were no obvious effects of JA on the production of endogenous H 2 S, AsA/DHA ratio and the transcript levels and activities of above enzymes in MT. However, application of PD98059 reduced above JA-induced indicators except the production of endogenous H 2 S and DHA content in MT. Our results suggested that H 2 S activated MEK1/2 in JA-regulated AsA/DHA ratio in A. thaliana leaves through enzymes in ascorbate metabolism.

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Section: Resultsmentioning

confidence: 99%

Jasmonic acid-induced hydrogen sulfide activates MEK1/2 in regulating the redox state of ascorbate in Arabidopsis thaliana leaves

Shan

Sun

Zhou

et al. 2019

Plant Signaling & Behavior

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“…Thus, there is a possibility that in the lupine AZ, active APX participates in the plant-cell-wall-loosening process and protective layers formation. Additionally, several lines of evidence point out that H 2 O 2 may contribute to cellular signaling transduction pathways and modulate gene expression [101][102][103]. Given the lower activity of antioxidant enzymes compared to a stable level of H 2 O 2 in the AZ (2 h), such a scenario cannot be excluded during the flower abscission evoked by the disruption of auxin transport (Figures 7 and 8).…”

Section: Discussionmentioning

confidence: 99%

Disruption of the Auxin Gradient in the Abscission Zone Area Evokes Asymmetrical Changes Leading to Flower Separation in Yellow Lupine

Kućko

Wilmowicz

Pokora

et al. 2020

IJMS

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How auxin transport regulates organ abscission is a long-standing and intriguing question. Polar auxin transport across the abscission zone (AZ) plays a more important role in the regulation of abscission than a local concentration of this hormone. We recently reported the existence of a spatiotemporal sequential pattern of the indole-3-acetic acid (IAA) localization in the area of the yellow lupine AZ, which is a place of flower detachment. In this study, we performed analyses of AZ following treatment with an inhibitor of polar auxin transport (2,3,5-triiodobenzoic acid (TIBA)). Once we applied TIBA directly onto the AZ, we observed a strong response as demonstrated by enhanced flower abscission. To elucidate the molecular events caused by the inhibition of auxin movement, we divided the AZ into the distal and proximal part. TIBA triggered the formation of the IAA gradient between these two parts. The AZ-marker genes, which encode the downstream molecular components of the inflorescence deficient in abscission (IDA)-signaling system executing the abscission, were expressed in the distal part. The accumulation of IAA in the proximal area accelerated the biosynthesis of abscisic acid and ethylene (stimulators of flower separation), which was also reflected at the transcriptional level. Accumulated IAA up-regulated reactive oxygen species (ROS) detoxification mechanisms. Collectively, we provide new information regarding auxin-regulated processes operating in specific areas of the AZ.

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“…An increase in content of hydrogen sulfide at treatment of maize seedlings with NO donors or hydrogen peroxide inducing heat resistance was revealed [10,11]. This indicates a close relationship between hydrogen sulfide, ROS and NO as signa ling molecules.…”

mentioning

confidence: 84%

nduction of plant cells heat resistance by hydrogen sulfide donor is mediated by H(2)O(2) generation with participation of NADPH oxidase and superoxide dismutase

Kolupaev¹,

Firsova²,

Yastreb³

2017

Ukr.Biochem.J.

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A t present, it is known that the formation of plant resistance to stress factors occurs with the participation of a number of signal mediators. The role of calcium ions, reactive oxygen species (ROS) and nitric oxide in transduction of stress signals into genetic apparatus of a plant cell and formation of adaptive reactions is most studied [1][2][3].In recent years, hydrogen sulfide (H 2 S) has been considered as another inorganic mediating molecule both in animals [4] and in plant cells [5,6].Effects of endogenous hydrogen sulfide content increasing in plants under action of stressors, in particular, drought [7], salinity [8], heavy metals [9] were shown. An increase in content of hydrogen sulfide at treatment of maize seedlings with NO donors or hydrogen peroxide inducing heat resistance was revealed [10,11]. This indicates a close relationship between hydrogen sulfide, ROS and NO as signa ling molecules.Data have also been obtained that indicate the role of ROS in transduction of H 2 S signal. Increasing resistance of barley plants to UV-B by hydrogen sulfide donor was accompanied by an increase in content of hydrogen peroxide in leaves and this effect was eliminated by the H 2 O 2 scavenger dimethylthiourea [12]. We have previously shown that induced by the hydrogen sulfide donor NaHS increase in heat resistance of wheat coleoptiles was leveled by treatment with an antioxidant ionol [13]. At the same time, however, the role of ROS in realization of the effects of hydrogen sulfide as a physiologically active

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Signal crosstalk between nitric oxide and hydrogen sulfide may be involved in hydrogen peroxide-induced thermotolerance in maize seedlings

Cited by 51 publications

References 27 publications

Jasmonic acid-induced hydrogen sulfide activates MEK1/2 in regulating the redox state of ascorbate in Arabidopsis thaliana leaves

Jasmonic acid-induced hydrogen sulfide activates MEK1/2 in regulating the redox state of ascorbate in Arabidopsis thaliana leaves

Disruption of the Auxin Gradient in the Abscission Zone Area Evokes Asymmetrical Changes Leading to Flower Separation in Yellow Lupine

nduction of plant cells heat resistance by hydrogen sulfide donor is mediated by H(2)O(2) generation with participation of NADPH oxidase and superoxide dismutase

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