PMID: 11902948Mar 21, 2002Paper

Identification of malodorous, a wild species allele affecting tomato aroma that was aelected against during domestication

Journal of Agricultural and Food Chemistry
Yaakov TadmorEfraim Lewinsohn

Abstract

Vegetable cultivation favored the inclusion of pleasant aromas in the produce, whereas unpleasant aromas were selected against. Introgression lines, generated by hybridization of a cultivated tomato (Lycopersicon esculentum) to its wild relative L. pennellii, were used to map quantitative trait loci (QTL) that influence tomato aroma. A marked undesirable flavor was detected by taste panelists in L. pennellii fruits and was related to an introgressed segment from the short arm of chromosome 8. Analysis of the ripe fruits' volatiles of chromosome 8 introgressed lines revealed an up to 60-fold increase in the levels of 2-phenylethanol and phenylacetaldehyde, as compared to the cultivated tomato. This effect was associated with a 10 cM segment originating from the wild species. Although 2-phenylethanol and phenylacetaldehyde have favorable contribution to tomato aroma when present at low levels, phenylacetaldehyde has a nauseating objectionable aroma when present in levels >0.005 ppm. The loss of the ability to produce high levels of phenylacetaldehyde contributed to the development of desirable aroma of the cultivated tomato. The findings provide a genetic explanation for one of the aroma changes that occurred during the domestica...Continue Reading

Citations

Jun 1, 2005·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Anne FrarySteven Tanksley
Dec 18, 2008·Journal of Experimental Botany·Sandrine MathieuDenise M Tieman
Nov 4, 2004·The Plant Cell·Asaph AharoniHarro J Bouwmeester
Feb 14, 2006·Science·Eran PicherskyNatalia Dudareva
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Apr 3, 2014·Journal of Experimental Botany·José L RamblaAntonio Granell
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Apr 17, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hye Won KimYoung-Suk Kim
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Apr 3, 2020·Plant Science : an International Journal of Experimental Plant Biology·Rufang WangRuud A de Maagd
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