Slow darkening of pinto bean seed coat is associated with significant metabolite and transcript differences related to proanthocyanidin biosynthesis.

ABSTRACT:

Background

Postharvest seed coat darkening in pinto bean is an undesirable trait resulting in a loss in the economic value of the crop. The extent of darkening varies between the bean cultivars and their storage conditions.

Results

Metabolite analysis revealed that the majority of flavonoids including proanthocyanidin monomer catechin accumulated at higher level in a regular darkening (RD) pinto line CDC Pintium than in a slow darkening (SD) line 1533-15. A transcriptome analysis was conducted to compare gene expression between CDC Pintium and 1533-15 and identify the gene (s) that may play a role in slow darkening processes in 1533-15 pinto. RNAseq against total RNA from RD and SD cultivars found several phenylpropanoid genes, metabolite transporter genes and genes involved

SUBMITTER: Duwadi K 

PROVIDER: S-EPMC5903001 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature