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Molecular and Genetic Characterization of a Non- Climacteric Phenotype in Melon Reveals Two Loci Conferring Altered Ethylene Response in Fruit

Périn, Christophe and Gomez-Jimenez, MariCarmen and Hagen, Lynda and Dogimont, Catherine and Pech, Jean-Claude and Latché, Alain and Pitrat, Michel and Lelièvre, Jean-Marc Molecular and Genetic Characterization of a Non- Climacteric Phenotype in Melon Reveals Two Loci Conferring Altered Ethylene Response in Fruit. (2002) Plant Physiology, vol. 1 . pp. 300-309. ISSN 0032-0889

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Official URL: http://dx.doi.org/10.1104/pp.010613

Abstract

Fruit ripening and abscission are associated with an ethylene burst in several melon (Cucumis melo) genotypes. In cantaloupe as in other climacteric fruit, exogenous ethylene can prematurely induce abscission, ethylene production, and ripening. Melon genotypes without fruit abscission or without ethylene burst also exist and are, therefore, non-climacteric. In the nonabscising melon fruit PI 161375, exogenous ethylene failed to stimulate abscission, loss of firmness, ethylene production, and expression of all target genes tested. However, the PI 161375 etiolated seedlings displayed the usual ethylene-induced triple response. Genetic analysis on a population of recombinant cantaloupe Charentais PI 161375 inbred lines in segregation for fruit abscission and ethylene production indicated that both characters are controlled by two independent loci, abscission layer (Al)-3 and Al-4. The non-climacteric phenotype in fruit tissues is attributable to ethylene insensitivity conferred by the recessive allelic forms from PI 161375. Five candidate genes (two ACO, two ACS, and ERS) that were localized on the melon genetic map did not exhibit colocalization with Al-3 or Al-4.

Item Type:Article
Additional Information:The definitive version is available at http://www.plantphysiol.org/ The original PDF of the article can be found at Plant Physiology website : http://www.sciencedirect.com/science/journal/00406031
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
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Deposited By:Dabernat Séverine

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