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Suppression of DRR1 results in the accumulation of insoluble ubiquitinated proteins, which impairs drought stress tolerance
- Source :
- Journal of integrative plant biologyREFERENCES. 63(3)
- Publication Year :
- 2020
-
Abstract
- Drought stress has detrimental effects on plants. Although the abscisic acid (ABA)-mediated drought response is well established, defensive mechanisms to cope with dehydration-induced proteotoxicity have been rarely studied. DRR1 was identified as an Arabidopsis drought-induced gene encoding an ER-localized RING-type E3 Ub ligase. Suppression of DRR1 markedly reduced tolerance to drought and proteotoxic stress without altering ABA-mediated germination and stomatal movement. Proteotoxicity- and dehydration-induced insoluble ubiquitinated protein accumulation was more obvious in DRR1 loss-of-function plants than in wild-type plants. These results suggest that DRR1 is involved in an ABA-independent drought stress response possibly through the mitigation of dehydration-induced proteotoxic stress.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Drought stress
Ubiquitin-Protein Ligases
Defence mechanisms
Arabidopsis
Plant Science
Endoplasmic Reticulum
01 natural sciences
Biochemistry
General Biochemistry, Genetics and Molecular Biology
03 medical and health sciences
chemistry.chemical_compound
Ubiquitin
Stress, Physiological
Abscisic acid
chemistry.chemical_classification
DNA ligase
biology
Arabidopsis Proteins
fungi
food and beverages
biology.organism_classification
Adaptation, Physiological
Ubiquitinated Proteins
Cell biology
Droughts
030104 developmental biology
Proteotoxicity
chemistry
Solubility
Germination
biology.protein
010606 plant biology & botany
Subjects
Details
- ISSN :
- 17447909
- Volume :
- 63
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Journal of integrative plant biologyREFERENCES
- Accession number :
- edsair.doi.dedup.....8119bad498526c254aed054025e6ea2a