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Arabidopsis group XIV ubiquitin-conjugating enzymes AtUBC32, AtUBC33, and AtUBC34 play negative roles in drought stress response.
- Source :
-
Journal of Plant Physiology . Nov2018, Vol. 230, p73-79. 7p. - Publication Year :
- 2018
-
Abstract
- Abstract AtUBC32, AtUBC33, and AtUBC34 comprise Arabidopsis group XIV E2 ubiquitin-conjugating enzymes. Yeast two-hybrid, in vitro pull-down, and bimolecular fluorescence complementation assays revealed that group XIV E2s are interacting partners of the U-box-type E3 ligase PUB19, a negative regulator of drought stress response. These three AtUBCs are co-localized with PUB19 to the punctae-like structures, most of which reside on the endoplasmic reticulum membrane of tobacco leaf cells. Suppression of AtUBC32 , AtUBC33 , and AtUBC34 resulted in increased abscisic acid-mediated stomatal closure and tolerance to drought stress. These results indicate that Arabidopsis group XIV E2s play negative roles in drought stress response. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01761617
- Volume :
- 230
- Database :
- Academic Search Index
- Journal :
- Journal of Plant Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 133150134
- Full Text :
- https://doi.org/10.1016/j.jplph.2018.08.010