Journal
PLANT CELL REPORTS
Volume 32, Issue 7, Pages 1067-1074Publisher
SPRINGER
DOI: 10.1007/s00299-013-1423-4
Keywords
GA; JA; Plant growth; Plant defense; Phytohormone signaling
Categories
Funding
- National University of Singapore [R-154-000-506-112]
- Singapore National Research Foundation under its Competitive Research Programme [NRF2010NRF-CRP002-018]
- Temasek Life Sciences Laboratory
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Gibberellins (GAs) and jasmonates (JAs) are two types of essential phytohormones that control many aspects of plant growth and development in response to environmental and endogenous signals. GA regulates many essential plant developmental processes, while JA plays a dominant role in mediating plant response to stress. Recent studies have revealed that intensive crosstalk between GA and JA signaling is involved in both plant development and defense to biotic or abiotic stress. In particular, interaction between DELLAs and JA ZIM-domain (JAZ) proteins, which are key repressors in GA- and JA-signaling pathways, respectively, plays a key role in mediating the balance between plant growth and defense through modulating the activity of their interacting transcriptional factors in response to GA and JA signals. Here, we briefly review the recent progress in understanding the antagonistic and synergistic crosstalk between GA and JA signaling with a focus on the central role of DELLA-JAZ interaction in addressing the plant dilemma between to grow and to defend in response to various stimuli.
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