Hormonal Regulation of Early Fruit Development in European Pear (Pyrus communis cv. „Conference“)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F19%3A00504254" target="_blank" >RIV/61389030:_____/19:00504254 - isvavai.cz</a>

Result on the web

<a href="http://doi.org/10.3390/horticulturae5010009" target="_blank" >http://doi.org/10.3390/horticulturae5010009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/horticulturae5010009" target="_blank" >10.3390/horticulturae5010009</a>

Result language

angličtina

Original language name

Hormonal Regulation of Early Fruit Development in European Pear (Pyrus communis cv. „Conference“)

Original language description

European pear requires inter-cultivar cross-pollination by insects to develop fertilized fruits. However, some European pear cultivars such as Conference naturally produce parthenocarpic seedless fruits. To better understand the hormonal regulation of fruit set and early fruit development in this European pear cultivar, the phytohormone and polyamine profiles in Conference flowers and fruits resulting from both fertilization and parthenocarpic processes were analyzed. The expression of genes involved in phytohormone metabolism and signaling were also investigated. Phytohormone profiles differed more at flower stage 3 days after treatment than in 15 day- and 30-day-old fruits in response to fertilization and parthenocarpy. An increase in auxins, abscisic acid, ethylene precursor, and spermine, and a decrease in putrescine were recorded in the fertilized flowers as compared to the parthenocarpic flowers. Fertilization also upregulated genes involved in gibberellin synthesis and down-regulated genes involved in gibberellin catabolism although the total gibberellin content was not modified. Moreover, exogenous gibberellin (GA3, GA4/7) and cytokinin (6BA) applications did not increase parthenocarpic induction in Conference as observed in other European and Asian pear cultivars. We hypothesize that the intrinsic parthenocarpy of Conference could be related to a high gibberellin level in the flowers explaining why exogenous gibberellin application did not increase parthenocarpy as observed in other pear cultivars and species.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10609 - Biochemical research methods

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

HORTICULTURAE

ISSN

2311-7524

e-ISSN

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Volume of the periodical

5

Issue of the periodical within the volume

1

Country of publishing house

CH - SWITZERLAND

Number of pages

18

Pages from-to

9

UT code for WoS article

000463999500009

EID of the result in the Scopus database

2-s2.0-85068123292