» Articles » PMID: 30609774

Hydrogen Peroxide and Nitric Oxide Crosstalk Mediates Brassinosteroids Induced Cold Stress Tolerance in

Overview
Journal Int J Mol Sci
Publisher MDPI
Date 2019 Jan 6
PMID 30609774
Citations 11
Authors
Affiliations
Soon will be listed here.
Abstract

Brassinosteroids (BRs) play pivotal roles in modulating plant growth, development, and stress responses. In this study, a plant pretreated with brassinolide (BL, the most active BR), enhanced cold stress tolerance by regulating the expression of several cold-related genes and antioxidant enzymes activities. Previous studies reported that hydrogen peroxide (H₂O₂) and nitric oxide (NO) are involved during environmental stress conditions. However, how these two signaling molecules interact with each other in BRs-induced abiotic stress tolerance remain largely unclear. BL-pretreatment induced, while brassinazole (BRZ, a specific inhibitor of BRs biosynthesis) reduced H₂O₂ and NO production. Further, application of dimethylthiourea (DMTU, a H₂O₂ and OH scavenger) blocked BRs-induced NO production, but BRs-induced H₂O₂ generation was not sensitive to 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO, a scavenger of NO). Moreover, pretreatment with DMTU and PTIO decreased BL-induced mitochondrial alternative oxidase (AOX) and the photosystem capacity. However, pretreatment with PTIO was found to be more effective than DMTU in reducing BRs-induced increases in , , and gene expression. Similarly, BRs-induced photosystem II efficiency was found in NO dependent manner than H₂O₂. Finally, we conclude that H₂O₂ was involved in NO generation, whereas NO was found to be crucial in BRs-induced AOX capacity, which further contributed to the protection of the photosystem under cold stress conditions in .

Citing Articles

Plant Coping with Cold Stress: Molecular and Physiological Adaptive Mechanisms with Future Perspectives.

Feng Y, Li Z, Kong X, Khan A, Ullah N, Zhang X Cells. 2025; 14(2).

PMID: 39851537 PMC: 11764090. DOI: 10.3390/cells14020110.


Analysis of the Mechanisms Underlying the Specificity of the Variation Potential Induced by Different Stimuli.

Mudrilov M, Ladeynova M, Vetrova Y, Vodeneev V Plants (Basel). 2024; 13(20).

PMID: 39458843 PMC: 11511009. DOI: 10.3390/plants13202896.


Functional and Transcriptome Analysis Reveal Specific Roles of and in Root Hair Development, Reproductive Growth, and Stress Tolerance.

Tian Q, Xie X, Lai R, Cheng C, Zhang Z, Chen Y Plants (Basel). 2024; 13(4).

PMID: 38498444 PMC: 10891736. DOI: 10.3390/plants13040480.


Effect of Reactive Oxygen Scavenger N,N'-Dimethylthiourea (DMTU) on Seed Germination and Radicle Elongation of Maize.

Li W, Li J, Zhang Y, Luo W, Dou Y, Yu S Int J Mol Sci. 2023; 24(21).

PMID: 37958543 PMC: 10649595. DOI: 10.3390/ijms242115557.


Transcriptome Analysis Reveals Brassinolide Signaling Pathway Control of Foxtail Millet Seedling Starch and Sucrose Metabolism under Freezing Stress, with Implications for Growth and Development.

Zhao X, Ma K, Li Z, Li W, Zhang X, Liu S Int J Mol Sci. 2023; 24(14).

PMID: 37511348 PMC: 10380969. DOI: 10.3390/ijms241411590.


References
1.
Neill S, Desikan R, Hancock J . Hydrogen peroxide signalling. Curr Opin Plant Biol. 2002; 5(5):388-95. DOI: 10.1016/s1369-5266(02)00282-0. View

2.
Szekely G, Abraham E, Cseplo A, Rigo G, Zsigmond L, Csiszar J . Duplicated P5CS genes of Arabidopsis play distinct roles in stress regulation and developmental control of proline biosynthesis. Plant J. 2007; 53(1):11-28. DOI: 10.1111/j.1365-313X.2007.03318.x. View

3.
Hansen M, Chae H, Kieber J . Regulation of ACS protein stability by cytokinin and brassinosteroid. Plant J. 2008; 57(4):606-14. PMC: 2807401. DOI: 10.1111/j.1365-313X.2008.03711.x. View

4.
Xing W, Li D, Liu G . Antioxidative responses of Elodea nuttallii (Planch.) H. St. John to short-term iron exposure. Plant Physiol Biochem. 2010; 48(10-11):873-8. DOI: 10.1016/j.plaphy.2010.08.006. View

5.
Bilger W, Bjorkman O . Role of the xanthophyll cycle in photoprotection elucidated by measurements of light-induced absorbance changes, fluorescence and photosynthesis in leaves of Hedera canariensis. Photosynth Res. 2014; 25(3):173-85. DOI: 10.1007/BF00033159. View