identification of a solanum pennellii chromosome 4 fruit flavor and nutritional quality-associated metabolite qtl

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ID: 141609
2016
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Abstract
A major resource for tomato quality improvement and gene discovery is the collection of introgression lines (ILs) of cultivated Solanum lycopersicum that contain different, defined chromosomal segments derived from the wild tomato relative, S. pennellii. Among these lines, IL4-4, in which the bottom of S. lycopersicum (cv. M82) chromosome 4 is replaced by the corresponding S. pennellii segment, is altered in many primary and secondary metabolites, including many related to fruit flavor and nutritional quality. Here, we provide a comprehensive profile of IL4-4 ripe fruit metabolites, the transcriptome and fine mapping of sub-ILs. Remarkably, out of 327 quantified metabolites, 185 were significantly changed in IL4-4 fruit, compared to the control. These altered metabolites include volatile organic compounds, primary and secondary metabolites. Partial least squares enhanced discriminant analysis of the metabolite levels among sub-ILs indicated that a genome region encompassing 20 putative open reading frames is responsible for most of the metabolic changes in IL4-4 fruit. This work provides comprehensive insights into IL4-4 fruit biochemistry, identifying a small region of the genome that has major effects on a large and diverse set of metabolites.
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liu2016frontiersidentification Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;ZHONGYUAN LIU;Saleh Alseek;Yariv Brotman;Yariv Brotman;Yi Zheng;Zhangjun Fei;Denise Tieman;James Giovannoni;Alisdair Fernie;Harry Klee
Journal phytochemistry letters
Year 2016
DOI
10.3389/fpls.2016.01671
URL
http://journal.frontiersin.org/Journal/10.3389/fpls.2016.01671/full
Keywords
transcription metabolome fruit ripening flavor genetic introgressionplant culture

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