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Plants experience abiotic stresses throughout their life cycle and accordingly respond to tide over the unfavorable conditions. Plants adopt to drought stress through various molecular, biochemical, physiological and cellular processes. F-box protein subunit of the Skp1-Cullin-F-box (SCF) E3 ubiquitin ligases plays crucial role in imparting specificity for selective degradation of target proteins. Here we report the function of Arabidopsis F-box protein At1g08710 in drought stress adaptation. F-box protein is a constituent of SCF complex as it is shown interacting with ASK1 and Cullin 1. F-box protein localizes in both nucleus and membrane. F-box gene transcript is highly accumulated in root and altered in response to drought stress conditions. F-box protein interacts with a transcriptional co-activator protein ADA2b. F-box mutant plants growth is better under drought stress conditions compared to the wild type. Accumulation of H2O2 and malondialdehyde (MDA) content is reduced in mutant plants. Drought responsive genes RD29A, RD22, ABI3 expression is induced in F-box mutant plants. These results indicate F-box protein At1g08710 role in drought stress adaptation in Arabidopsis thaliana. Copyright © 2020 Elsevier Inc. All rights reserved.


Venkateswara Rao, Vijaybhaskar Virupapuram. Arabidopsis F-box protein At1g08710 interacts with transcriptional protein ADA2b and imparts drought stress tolerance by negatively regulating seedling growth. Biochemical and biophysical research communications. 2021 Jan 15;536:45-51

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PMID: 33360542

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