Autocatalytic biosynthesis of abscisic acid and its synergistic action with auxin to regulate strawberry fruit ripening

Abscisic acid (ABA) plays a major role in the regulation of strawberry fruit ripening; however, the origin of the ABA signal is largely unknown. Here, we report an autocatalytic mechanism for ABA biosynthesis and its synergistic interaction with the auxin to regulate strawberry fruit ripening. We de...

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Bibliographic Details
Published inHorticulture research Vol. 9
Main Authors Li, Tianyu, Dai, Zhengrong, Zeng, Baozhen, Li, Jie, Ouyang, Jinyao, Kang, Li, Wang, Wei, Jia, Wensuo
Format Journal Article
LanguageEnglish
Published England Oxford University Press 19.01.2022
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Summary:Abscisic acid (ABA) plays a major role in the regulation of strawberry fruit ripening; however, the origin of the ABA signal is largely unknown. Here, we report an autocatalytic mechanism for ABA biosynthesis and its synergistic interaction with the auxin to regulate strawberry fruit ripening. We demonstrate that ABA biosynthesis is self-induced in the achenes, but not in the receptacle, which results its substantial accumulation during ripening. ABA was found to regulate both IAA transport and biosynthesis, thereby modulating IAA content during both early fruit growth and later during ripening. Taken together, these results reveal the origins of the ABA signal and demonstrate the importance of its coordinated action with IAA in the regulation of strawberry fruit development and ripening.
Bibliography:These authors contributed equally.
ISSN:2662-6810
2052-7276
2052-7276
DOI:10.1093/hr/uhab076