Characterisation of alleles of tomato light signalling genes generated by TILLING

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Jones, Matthew O. | Piron, Florence | Marcel, Fabien | Piednoir, Elodie | Alsadon, Abdullah A. | Wahb-Allah, Mahmoud A. | Al-Doss, Abdullah A. | Bowler, Chris | Bramley, Peter M. | Fraser, Paul D. | Bendahmane, Abdelhafid, A.

Edité par CCSD ; Elsevier -

Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699. International audience. Targeting Induced Local Lesions IN Genomes (TILLING) combines chemical mutagenesis with high throughput screening to allow the generation of alleles of selected genes. In this study, TILLING has been applied to produce a series of mutations in genes encoding essential components of the tomato light signal transduction pathway in an attempt to enhance fruit nutritional quality. Point mutations to DEETIO-LATED1 (DET1), which is responsible for the high pigment2 (hp2) tomato mutant, resulted in elevated levels of both carotenoid and phenylpropanoid phytonutrients in ripe fruit, whilst immature fruit showed increased chlorophyll content, photosynthetic capacity and altered fruit morphology. Furthermore, genotypes with mutations to the UV-DAMAGED DNA BINDING PROTEIN 1 (DDB1), COP1 and COP1 like were also characterised. These genotypes largely did not display phenotypes characteristic of mutation to light signalling components but their characterisation has enabled interrogation of structure function relationships of the mutated genes. (C) 2012 Elsevier Ltd. All rights reserved.

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