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ACC Synthase Genes Related to Cold-dependent Ripening in Pear Fruit

El-Sharkawy, Islam and Lelièvre, Jean-Marc and Pech, Jean-Claude and Latché, Alain ACC Synthase Genes Related to Cold-dependent Ripening in Pear Fruit. (2005) In: 5th International Postharvest Symposium, 6 June 2004 - 11 June 2004 (Verona, Italy).

(Document in English)

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Official URL: http://www.actahort.org/books/682/682_41.htm


The differential regulation of ACC synthase genes has been studied in pear cultivars that either require a long chilling treatment before they are capable of ripening (‘Passe-Crassane’, PC) or not (‘Old-Home’, OH) and in OH x PC hybrids having no (A16) or intermediate (A50) cold requirement. Among the seven Pc-ACS cDNAs isolated, four of them (Pc-ACS1a/b and Pc-ACS2a/b) showed differential expression in relation with cold requirement. Pc-ACS1a transcripts accumulated specifically during chilling and ripening of cold-dependent cultivars while Pc-ACS1b transcripts were detected only during ripening of cold-independent genotypes. Pc- ACS2a mRNA was expressed specifically in cold-dependent genotypes and negatively regulated by ethylene while Pc-ACS2b transcripts accumulated only in cold-independent genotypes and positively regulated by ethylene. Pc-ACS3, 4 and 5 transcripts accumulation was similar in all genotypes, independently of coldrequirements.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Published in : Acta Horticulturae, n° 682, pp.355-362, ISSN : 0567-7572. Thanks to International Society for Horticultural Science editor. The definitive version is available at http://www.actahort.org/index.htm The original PDF of the article can be found at Acta Horticulturae website : http://www.actahort.org/books/682/
HAL Id:hal-04037937
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Laboratory name:
Deposited On:02 Dec 2008 10:58

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