期刊
PLANT SIGNALING & BEHAVIOR
卷 4, 期 12, 页码 1176-1178出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/psb.4.12.10044
关键词
seed germination; seedling growth; SUMO; sumoylation; SIZ1; signal transduction
资金
- Special Coordination Funds for Promoting Science and Technology from the Japanese Ministry of Education, Culture, Sports, Science and Technology [21770032]
- National Science Foundation Plant Genome Program [DBI-98-13360]
- U.S. Department of AgricultureNational Research Initiative Competitive Grants Program [08-35100-04529]
The conjugation of small ubiquitin-related modifier (SUMO) to substrates (sumoylation) is one of post-translational modification systems in eukaryotes. Sumoylation plays an important role in the regulation of environmental stress response, biotic stress response, and flowering control in plants. Covalent SUMO conjugation requires an E1/E2/E3 enzyme, and SUMO E3 ligase SIZ1 is essential for these regulations. This addendum summarizes our recent study in which it has been established that in Arabidopsis, SUMO E3 ligase SIZ1 negatively controls abscisic acid (ABA) signaling through the sumoylation of ABI5. The conjugation of SUMO to ABI5 represses its activity and also prevents ABI5 from undergoing degradation.
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