Hormonal changes during non-climacteric ripening in strawberry
Open Access
- 12 July 2012
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 63 (13), 4741-4750
- https://doi.org/10.1093/jxb/ers147
Abstract
In contrast to climacteric fruits, where ethylene is known to be pivotal, the regulation of ripening in non-climacteric fruits is not well understood. In the non-climacteric strawberry (Fragaria anannassa), auxin and abscisic acid (ABA) are thought to be important, but the roles of other hormones suggested to be involved in fruit development and ripening are not clear. Here changes in the levels of indole-3-acetic acid (IAA), ABA, GA1, and castasterone from anthesis to fully ripened fruit are reported. The levels of IAA and GA1 rise early in fruit development before dropping to low levels prior to colour accumulation. Castasterone levels are highest at anthesis and drop to very low levels well before ripening commences, suggesting that brassinosteroids do not play an important role in ripening in strawberry. ABA levels are low at anthesis and gradually rise through development and ripening. The synthetic auxin, 1-naphthaleneacetic acid (NAA), can delay ripening, but the application of GA3, the gibberellin biosythesis inhibitor paclobutrazol, and ABA had no significant effect. IAA and ABA levels are higher in the developing achenes than in the receptacle tissue and may be important for receptacle enlargement and ripening, and seed maturation, respectively. Contrary to a recent report, the biologically active GA4 was not detected. The pattern of changes in the levels of the hormones are different from those reported in another well studied non-climateric fruit, grape, suggesting that a single consistent pattern of hormone changes does not occur in this group of fruit during ripening.Keywords
This publication has 40 references indexed in Scilit:
- Abscisic Acid Plays an Important Role in the Regulation of Strawberry Fruit RipeningPlant Physiology, 2011
- Gibberellin biosynthesis and signalling during development of the strawberry receptacleNew Phytologist, 2011
- Highly Sensitive and High-Throughput Analysis of Plant Hormones Using MS-Probe Modification and Liquid ChromatographyTandem Mass Spectrometry: An Application for Hormone Profiling in Oryza sativaPlant and Cell Physiology, 2009
- Characterization of Two Brassinosteroid C-6 Oxidase Genes in PeaPlant Physiology, 2007
- Ethylene Insensitivity Conferred by theGreen-ripeandNever-ripe 2Ripening Mutants of TomatoPlant Physiology, 2005
- Patterns of Dwarf expression and brassinosteroid accumulation in tomato reveal the importance of brassinosteroid synthesis during fruit developmentThe Plant Journal, 2005
- Ethylene seems required for the berry development and ripening in grape, a non-climacteric fruitPlant Science, 2004
- p-Chlorophenoxyisobutyric Acid Impairs Auxin Response in Arabidopsis RootPlant Physiology, 2003
- Sugar uptake into strawberry fruit is stimulated by abscisic acid and indoleacetic acidPhysiologia Plantarum, 1996
- Gibberellins and the Growth of Excised Tomato Roots: Comparison ofgib-1Mutant and Wild Type and Responses to Applied GA3and 2S, 3SPaclobutrazolJournal of Experimental Botany, 1990