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Hydrogen sulfide induces hydrogen peroxide and nitric oxide mediation of salt stress-caused stomatal closure in Arabidopsis thaliana (L.) Heynh.

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Title Hydrogen sulfide induces hydrogen peroxide and nitric oxide mediation of salt stress-caused stomatal closure in Arabidopsis thaliana (L.) Heynh.
 
Creator Ma, Yinli
Liang, Shuangshuang
Huang, Liping
Shao, Luhan
 
Subject Abiotic stress
H2O2 synthesis
H2S synthesis
L-/D-CDes activity
Mouseear cress
NO production
Rockcress
Salt stress
Thale cress
 
Description 157-168
The roles of H2S, hydrogen peroxide (H2O2) and nitric oxide (NO) in signaling transduction of stomatal movement response
to salt stress in Arabidopsis thaliana (L.) Heynh. are still unknown. The role of H2S and its relationship with H2O2 and NO in
salt stress-caused stomatal closure by using pharmacological, spectrophotographic and fluorescence microscopic approaches in
A. thaliana were investigated. Our results will provide evidence for further elucidating the signal transduction mechanism of
stomatal movement caused salt stress in plants. Salt stress caused stomatal closure in wild-type and AtrbohD mutant, these
effects were prohibited by H2S modulators, H2O2 modulators, NO modulators in wild-type, respectively. However, salt stress
couldn’t significantly change the stomatal aperture of Atl-cdes, Atd-cdes, Atnoa1, nia1-2, nia2-1, nia1-2/nia2-5, AtrbohF and
AtrbohD/F mutants. Salt stress caused rise of H2S content and L-/D-cysteine desulfhydrase (L-/D-CDes) activity of leaves in
wild-type and AtrbohD mutant, but these effects were prevented by H2S modulators in wild-type. H2O2 modulators and NO
modulators significantly inhibited salt stress-caused H2O2 production and NO synthesis in wild-type, respectively. These results
suggested that H2S, H2O2 and NO participate in salt stress-caused stomatal closure. H2O2 modulators and NO modulators
prevented salt stress-caused H2S synthesis and L-/D-CDes activity increase in leaves of wild-type, but H2S modulators couldn’t
inhibit salt stress-caused H2O2 production and NO synthesis in wild-type. Salt stress increased H2O2 and NO levels in Atl-cdes
and Atd-cdes mutants, but failed to cause H2S synthesis and L-/D-CDes activity increase in AtrbohF, AtrbohD/F, Atnoa1, nia1-
2, nia2-1 and nia1-2/nia2-5 mutants. All the data suggested that salt stress induced H2O2 and NO production, subsequent caused
H2S synthesis, and finally closed stomata in A. thaliana.
 
Date 2024-03-15T10:02:59Z
2024-03-15T10:02:59Z
2024-03
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/63586
https://doi.org/10.56042/ijeb.v62i03.4170
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJEB Vol.62(03) [March 2024]