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Suppression of Arabidopsis RING E3 ubiquitin ligase AtATL78 increases tolerance to cold stress and decreases tolerance to drought stress
Author(s) -
Kim Soo Jin,
Kim Woo Taek
Publication year - 2013
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/j.febslet.2013.06.038
Subject(s) - ubiquitin ligase , arabidopsis , cold stress , regulator , ubiquitin , cold tolerance , drought stress , ubiquitin protein ligases , microbiology and biotechnology , negative regulator , biology , chemistry , botany , gene , biochemistry , signal transduction , mutant
AtATL78 is an Arabidopsis RING E3 ubiquitin ligase. RT‐PCR and promoter‐GUS assays revealed that AtATL78 was up‐regulated by cold stress and down‐regulated by drought. AtATL78 was localized at the plasma‐membrane. Suppression of AtATL78 increased tolerance to cold stress but decreased tolerance to drought. Our data suggests that AtATL78 is a negative regulator of cold stress response and a positive regulator of drought stress response in Arabidopsis . These results further suggest that AtATL78 plays opposing roles in cold and drought stress responses.