Journal
JOURNAL OF PLANT BIOLOGY
Volume 52, Issue 4, Pages 283-288Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s12374-009-9038-6
Keywords
Ethylene; Intracellular signaling; Protein stability; EIN2; ETP1; ETP2; EIN3; EBF1; EBF2; Protein phosphorylation/de-phosphorylation; MKK9; MPK3; MPK6
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Funding
- KOSEF [2009-0075514, 2009-0068557]
- promotion program for new faculty, Sungkyunkwan University [2008-0843-000]
- National Research Foundation of Korea [2009-0068557, 2009-0075514] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The plant hormone ethylene modulates growth and development and mediates diverse stresses and pathogens. Genetic studies with a laboratory reference plant, Arabidopsis, enabled researchers first to identify and place several key signaling components in a linear pathway for hormone signaling. Biochemical and cellular investigations have now led us to integrate functionally these genetically identified factors within a signaling context. Multi-step regulation of protein stability that accompanies phosphorylation/de-phosphorylation appears to be a central and underlying molecular mechanism. Here, we briefly summarize recent findings in such post-translational regulation of ethylene signaling factors. Based on this, we can postulate a new framework and formulate specific questions to unravel the emerging dynamics and complexity of ethylene signaling.
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