Transcriptomic and metabolomic analyses of Lycium ruthenicum and Lycium barbarum fruits during ripening.

Scientific Reports
Jianhua ZhaoYoulong Cao

Abstract

Red wolfberry (or goji berry, Lycium barbarum; LB) is an important agricultural product with a high content of pharmacologically important secondary metabolites such as phenylpropanoids. A close relative, black wolfberry (L. ruthenicum; LR), endemic to the salinized deserts of northwestern China, is used only locally. The two fruits exhibit many morphological and phytochemical differences, but genetic mechanisms underlying them remain poorly explored. In order to identify the genes of interest for further studies, we studied transcriptomic (Illumina HiSeq) and metabolomic (LC-MS) profiles of the two fruits during five developmental stages (young to ripe). As expected, we identified much higher numbers of significantly differentially regulated genes (DEGs) than metabolites. The highest numbers were identified in pairwise comparisons including the first stage for both species, but total numbers were consistently somewhat lower for the LR. The number of differentially regulated metabolites in pairwise comparisons of developmental stages varied from 66 (stages 3 vs 4) to 133 (stages 2 vs 5) in both species. We identified a number of genes (e.g. AAT1, metE, pip) and metabolites (e.g. rutin, raffinose, galactinol, trehalose, citrulli...Continue Reading

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Methods Mentioned

BETA
electrophoresis
RNA-seq
PCR
environmental stress

Software Mentioned

Edge R
R
Java
maSigPro
Treeview
Trinity
Analyst
DAVID
dupRadar
- DA ( Discrimination Analysis

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