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Transcriptome and metabolome reveal redirection of flavonoids in a white testa peanut mutant

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Relation http://oar.icrisat.org/11508/
https://doi.org/10.1186/s12870-020-02383-7
doi:10.1186/s12870-020-02383-7
 
Title Transcriptome and metabolome reveal redirection of flavonoids in a white testa peanut mutant
 
Creator Wan, L
Lei, Y
Yan, L
Liu, Y
Pandey, M K
Wan, X
Varshney, R K
Fang, J
Liao, B
 
Subject Groundnut
Oilseeds
Genetics and Genomics
Legume Crops
 
Description Background: Coat color determines both appearance and nutrient quality of peanut. White seed coat in peanut
can enhance the processing efficiency and quality of peanut oil. An integrative analysis of transcriptomes,
metabolomes and histocytology was performed on wsc mutant and its wild type to investigate the regulatory
mechanisms underlying color pigmentation.
Result: Metabolomes revealed flavonoids were redirected in wsc, while multi-omics analyses of wsc mutant seeds
and testae uncovered WSC influenced the flavonoids biosynthesis in testa as well as suberin formation, glycolysis,
the TCA cycle and amino acid metabolism. The mutation also enhanced plant hormones synthesis and signaling.
Further, co-expression analysis showed that FLS genes co-expressed with MBW complex member genes.
Combining tissue expression patterns, genetic analyses, and the annotation of common DEGs for these three stages
revealed that three testa specific expressed candidate genes, Araip.M7RY3, Aradu.R8PMF and Araip.MHR6K were likely
responsible for the white testa phenotype. WSC might be regulated expression competition between FLS and DFR
by controlling hormone synthesis and signaling as well as the MBW complex.
Conclusions: The results of this study therefore provide both candidate genes and novel approaches that can be
applied to improve peanut with desirable seed coat color and flavonoid quality.
 
Publisher BMC
 
Date 2020-04
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11508/1/s12870-020-02383-7.pdf
Wan, L and Lei, Y and Yan, L and Liu, Y and Pandey, M K and Wan, X and Varshney, R K and Fang, J and Liao, B (2020) Transcriptome and metabolome reveal redirection of flavonoids in a white testa peanut mutant. BMC Plant Biology (TSI), 20 (1). pp. 2-19. ISSN 1471-2229