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The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice
Open accessAbstract
Heat stress often results in the generation of reactive oxygen species, such as hydrogen peroxide, which plays a vital role as a secondary messenger in the process of abscisic acid (ABA)-mediated stomatal closure. Here, we characterized the rice (Oryza sativa) HEAT TOLERANCE AT SEEDLING STAGE (OsHTAS) gene, which plays a positive role in heat tolerance at the seedling stage. OsHTAS encodes a ubiquitin ligase localized to the nucleus and cytoplasm. OsHTAS expression was detected in all tissues surveyed and peaked in leaf blade, in which the expression was concentrated in mesophyll cells. OsHTAS was responsive to multiple stresses and was strongly induced by exogenous ABA. In yeast two-hybrid assays, OsHTAS interacted with components of the ubiquitin/26S proteasome system and an isoform of rice ascorbate peroxidase. OsHTAS modulated hydrogen peroxide accumulation in shoots, altered the stomatal aperture status of rice leaves, and promoted ABA biosynthesis. The results suggested that the RING finger ubiquitin E3 ligase OsHTAS functions in leaf blade to enhance heat tolerance through modulation of hydrogen peroxide-induced stomatal closure and is involved in both ABA-dependent and DROUGHT AND SALT TOLERANCE-mediated pathways.
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Citations
Cites
Reactive oxygen species: Metabolism, oxidative stress, and signal transduction
Apel, K., & Hirt, H. (2004) · Annual Review of Plant Biology · doi:10.1146/annurev.arplant.55.031903.141701 · Cited by 11,723
Cited by
The rice genome revolution: from an ancient grain to Green Super Rice
Wing, R. A., Purugganan, M. D., & Zhang, Q. (2018) · Nature Reviews Genetics · doi:10.1038/s41576-018-0024-z · Cited by 441
E3 Ubiquitin Ligases: Ubiquitous Actors in Plant Development and Abiotic Stress Responses
Shu, K., & Yang, W. (2017) · Plant and Cell Physiology · doi:10.1093/pcp/pcx071 · Cited by 322
The ubiquitin‐proteasome system in plant responses to environments
Xu, F., & Xue, H. (2019) · Plant, Cell & Environment · doi:10.1111/pce.13633 · Cited by 308
Metadata
- Authors
- Liu, J., Zhang, C., Wei, C., Liu, X., Wang, M., Yu, F., Xie, Q., & Tu, J.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2015-11-12
- Volume
- 170
- Issue
- 1
- Pages
- 429-443
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2178182652
- Cited by
- 227
- References
- 1
- FWCI
- 10.74
- Type
- journal article
- Language
- en
- Open access
- green
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- Liu, J., Zhang, C., Wei, C., Liu, X., Wang, M., Yu, F., Xie, Q., & Tu, J. (2015). The RING Finger Ubiquitin E3 Ligase OsHTAS Enhances Heat Tolerance by Promoting H2O2-Induced Stomatal Closure in Rice. Plant Physiology. https://doi.org/10.1104/pp.15.00879
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