The NF-YC–RGL2 module integrates GA and ABA signalling to regulate seed germination in Arabidopsis
Description
<jats:title>Abstract</jats:title><jats:p>The antagonistic crosstalk between gibberellic acid (GA) and abscisic acid (ABA) plays a pivotal role in the modulation of seed germination. However, the molecular mechanism of such phytohormone interaction remains largely elusive. Here we show that three <jats:italic>Arabidopsis</jats:italic> NUCLEAR FACTOR-Y C (NF-YC) homologues NF-YC3, NF-YC4 and NF-YC9 redundantly modulate GA- and ABA-mediated seed germination. These NF-YCs interact with the DELLA protein RGL2, a key repressor of GA signalling. The NF-YC–RGL2 module targets <jats:italic>ABI5</jats:italic>, a gene encoding a core component of ABA signalling, via specific CCAAT elements and collectively regulates a set of GA- and ABA-responsive genes, thus controlling germination. These results suggest that the NF-YC–RGL2–ABI5 module integrates GA and ABA signalling pathways during seed germination.</jats:p>
Journal
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- Nature Communications
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Nature Communications 7 (1), 2016-09-14
Springer Science and Business Media LLC
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Details 詳細情報について
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- CRID
- 1360576120148034304
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- ISSN
- 20411723
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- Data Source
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- Crossref