Gene and metabolite regulatory network analysis of early developing fruit tissues highlights new candidate genes for the control of tomato fruit composition and development.

Plant Physiology
Fabien MounetMartine Lemaire-Chamley

Abstract

Variations in early fruit development and composition may have major impacts on the taste and the overall quality of ripe tomato (Solanum lycopersicum) fruit. To get insights into the networks involved in these coordinated processes and to identify key regulatory genes, we explored the transcriptional and metabolic changes in expanding tomato fruit tissues using multivariate analysis and gene-metabolite correlation networks. To this end, we demonstrated and took advantage of the existence of clear structural and compositional differences between expanding mesocarp and locular tissue during fruit development (12-35 d postanthesis). Transcriptome and metabolome analyses were carried out with tomato microarrays and analytical methods including proton nuclear magnetic resonance and liquid chromatography-mass spectrometry, respectively. Pairwise comparisons of metabolite contents and gene expression profiles detected up to 37 direct gene-metabolite correlations involving regulatory genes (e.g. the correlations between glutamine, bZIP, and MYB transcription factors). Correlation network analyses revealed the existence of major hub genes correlated with 10 or more regulatory transcripts and embedded in a large regulatory network. This...Continue Reading

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Citations

Apr 27, 2012·Analytical Chemistry·Ralf TautenhahnGary Siuzdak
Jun 16, 2012·Journal of Agricultural and Food Chemistry·Marc LahayePere Arús
Jul 31, 2012·Journal of Experimental Botany·Fabien MounetMartine Lemaire-Chamley
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Oct 7, 2014·Plant Biotechnology Journal·Anna CzerednikRuud A de Maagd

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