Untargeted Metabolic Quantitative Trait Loci Analyses Reveal a Relationship between Primary Metabolism and Potato Tuber Quality

N. Carreno Quintero, A. Acharjee, C.A. Maliepaard, C.W.B. Bachem, R. Mumm, H.J. Bouwmeester, R.G.F. Visser, J.J.B. Keurentjes

Research output: Contribution to journalArticleAcademicpeer-review

79 Citations (Scopus)

Abstract

Recent advances in -omics technologies such as transcriptomics, metabolomics, and proteomics along with genotypic profiling have permitted dissection of the genetics of complex traits represented by molecular phenotypes in nonmodel species. To identify the genetic factors underlying variation in primary metabolism in potato (Solanum tuberosum), we have profiled primary metabolite content in a diploid potato mapping population, derived from crosses between S. tuberosum and wild relatives, using gas chromatography-time of flight-mass spectrometry. In total, 139 polar metabolites were detected, of which we identified metabolite quantitative trait loci for approximately 72% of the detected compounds. In order to obtain an insight into the relationships between metabolic traits and classical phenotypic traits, we also analyzed statistical associations between them. The combined analysis of genetic information through quantitative trait locus coincidence and the application of statistical learning methods provide information on putative indicators associated with the alterations in metabolic networks that affect complex phenotypic traits.
Original languageEnglish
Pages (from-to)1306-1318
JournalPlant Physiology
Volume158
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • chromatography-mass spectrometry
  • arabidopsis-thaliana
  • starch degradation
  • late blight
  • amino-acid
  • enzymatic discoloration
  • biochemical networks
  • introgression lines
  • genetic genomics
  • candidate genes

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