期刊
GENES & DEVELOPMENT
卷 24, 期 19, 页码 2127-2132出版社
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1101/gad.593410
关键词
Seed dispersal; gibberellin; fruit patterning
资金
- Biotechnology and Biological Sciences Research Council
- European Union
- Biotechnology and Biological Sciences Research Council [BB/D018005/1, BBS/E/J/000CA382, BB/E024807/1, BBS/E/J/00000613] Funding Source: researchfish
- BBSRC [BB/D018005/1, BBS/E/J/000CA382, BB/E024807/1] Funding Source: UKRI
The Arabidopsis basic helix-loop-helix (bHLH) proteins INDEHISCENT (IND) and ALCATRAZ (ALC) specify tissues required for fruit opening that have major roles in seed dispersal and plant domestication. Here, we show that synthesis of the phytohormone gibberellin is a direct and necessary target of IND, and that ALC interacts directly with DELLA repressors, which antagonize ALC function but are destabilized by gibberellin. Thus, the gibberellin/DELLA pathway has a key role in patterning the Arabidopsis fruit, and the interaction between DELLA and bHLH proteins, previously shown to connect gibberellin and light responses, is a versatile regulatory module also used in tissue patterning.
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