Analysis of the effect of each plant hormone on the maturation of woodland strawberry fruit in auxin-induced parthenocarpic fruit

Author:

Umemura Hayato1,Nakajima Masatoshi2ORCID,Ishii Hikari1,Kurokura Takeshi3,Asami Tadao2,Shimada Yukihisa1,Nakamura Ayako1

Affiliation:

1. Kihara Institute for Biological Research, Yokohama City University , Kanagawa, Japan

2. Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo, Japan

3. Faculty of Agriculture, Utsunomiya University , Tochigi, Japan

Abstract

ABSTRACT Evaluation of individual roles of plant hormones in fruit development is difficult because various plant hormones function simultaneously. In this study, to analyze the effect of plant hormones on fruit maturation one by one, plant hormones were applied to auxin-induced parthenocarpic woodland strawberry (Fragaria vesca) fruits. As a result, auxin, gibberellin (GA), and jasmonate, but, not abscisic acid and ethylene increased the proportion of ultimately mature fruits. So far, to produce comparable fruit with pollinated fruit in size, auxin with GA treatment was required in woodland strawberry. Picrolam (Pic), the most potent auxin in inducing parthenocarpic fruit, induced fruit which is comparable in size with pollinated fruit without GA. The endogenous GA level and the result of the RNA interference analysis of the main GA biosynthetic gene suggest that a basal level of endogenous GA is essential for fruit development. The effect of other plant hormones was also discussed.

Funder

Japan Society for the Promotion of Science

Publisher

Oxford University Press (OUP)

Subject

Organic Chemistry,Molecular Biology,Applied Microbiology and Biotechnology,General Medicine,Biochemistry,Analytical Chemistry,Biotechnology

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