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Molecular characterization of seven genes encoding ethylene-responsive transcriptional factors during plum fruit development and ripening

El-Sharkawy, Islam and Sherif, S. and Mila, Isabelle and Bouzayen, Mondher and Jayasankar, Subramanian Molecular characterization of seven genes encoding ethylene-responsive transcriptional factors during plum fruit development and ripening. (2009) Journal of Experimental Botany . pp. 1-16. ISSN 0022-0957

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Official URL: http://dx.doi.org/10.1093/jxb/ern354

Abstract

Seven ERF cDNAs were cloned from two Japanese plum (Prunus salicina L.) cultivars, ‘Early Golden’ (EG) and ‘Shiro’ (SH). Based on the sequence characterization, these Ps-ERFs could be classified into three of the four known ERF families. Their predicted amino acid sequences exhibited similarities to ERFs from other plant species. Functional nuclear localization signal analyses of two Ps-ERF proteins (Ps-ERF1a and -1b) were carried out using confocal microscopy. Expression analyses of Ps-ERF mRNAs were studied in the two plum cultivars in order to determine the role of this gene family in fruit development and ripening. The seven Ps-ERFs displayed differential expression pattern and levels throughout the various stages of flower and fruit development. The diversity in Ps-ERFs accumulation was largely due to the differences in their responses to the levels of ethylene production. However, other plant hormones such as cytokinin and auxin, which accumulate strongly throughout the various developmental stages, also influence the Ps-ERFs expression. The effect of the plant hormones, gibberellin, cytokinin, auxin, and ethylene in regulating the different Ps-ERF transcripts was investigated. A model was proposed in which the role played by the plant hormone auxin is as important as that of ethylene in initiating and determining the date and rate of ripening in Japanese plums.

Item Type:Article
Additional Information:Thanks to Oxford University Press editor. The definitive version is available at http://jxb.oxfordjournals.org The original PDF of the article can be found at Journal of Experimental Botany website : http://jxb.oxfordjournals.org/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut National de la Recherche Agronomique - INRA
Other partners > University of Guelph (CANADA)
Laboratory name:
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Deposited By: Brigitte LAFFORGUE

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