Abscisic Acid Plays an Important Role in the Regulation of Strawberry Fruit Ripening1[W][OA]

By H. Jia, Ye-mao Chai, Chun-li Li, D. Lu, Jing-jing Luo, L. Qin, Yuan-Yue Shen. Plant Physiology, 2011

647 citations recorded by the source corpus.

The plant hormone abscisic acid (ABA) has been suggested to play a role in fruit development, but supporting genetic evidence has been lacking. Here, we report that ABA promotes strawberry (Fragaria ananassa) fruit ripening. Using a newly established Tobacco rattle virus-induced gene silencing technique in strawberry fruit, the expression of a 9-cis-epoxycarotenoid dioxygenase gene (FaNCED1), which is key to ABA biosynthesis, was down-regulated, resulting in a significant decrease in ABA levels and uncolored fruits. Interestingly, a similar uncolored phenotype was observed in the transgenic RNA interference (RNAi) fruits, in which the expression of a putative ABA receptor gene encoding the magnesium chelatase H subunit (FaCHLH/ABAR) was down-regulated by virus-induced gene silencing. More importantly, the uncolored phenotype of the FaNCED1-down-regulated RNAi fruits could be rescued by exogenous ABA, but the ABA treatment could not reverse the uncolored phenotype of the FaCHLH/ABAR-down-regulated RNAi fruits. We observed that down-regulation of the FaCHLH/ABAR gene in the RNAi fruit altered both ABA levels and sugar content as well as a set of ABA- and/or sugar-responsive genes. Additionally, we showed that exogenous sugars, particularly sucrose, can significantly promote ripening while stimulating ABA accumulation. These data provide evidence that ABA is a signal molecule that promotes strawberry ripening and that the putative ABA receptor, FaCHLH/ABAR, is a positive regulator of ripening in response to ABA.

Subfields: Plant Science

View Paper: https://www.semanticscholar.org/paper/4a4eb66ef66b62720e185c989d5840eb315fe5f2

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Citations in the corpus

Recent Advances in Hormonal Regulation and Cross-Talk during Non-Climacteric Fruit Development and Ripening (2019, background): “In grape and strawberry, the ABA level was reported to be low during early fruit development stages, and high at different fruit ripening stages [48,71].”
Naturally Occurring Anthocyanin, Structure, Functions and BiosyntheticPathway in Fruit Plants (2017, background): “In recent studies it has been reported that, non-climateric fruits, in the regulation of ripening ABA is involved in the related anthocyanin biosynthesis [46,47].”
Insect pollination as a key factor for strawberry physiology and marketable fruit quality (2018, background): “ABA and ethylene synthesis is then accelerated during late fruit development and ripening (Cherian et al., 2014; Jia et al., 2011; Jiang and Joyce, 2003).”