A recessive mutation in muscadine grapes causes berry color-loss without influencing anthocyanin pathway.

ABSTRACT: Anthocyanins, a major class of flavonoids, are important pigments of grape berries. Despite the recent discovery of the genetic cause underlying the loss of color, the metabolomic and molecular responses are unknown. Anthocyanin quantification among diverse berry color muscadines suggests that all genotypes could produce adequate anthocyanin quantities, irrespective of berry color. Transcriptome profiling of contrasting color muscadine genotypes proposes a potential deficiency that occurs within the anthocyanin transport and/or degradation mechanisms and might cause unpigmented berries. Genome-wide association studies highlighted a region on chromosome-4, comprising several genes encoding glutathione S-transferases involved in anthocyanin transport. Sequence comparison among genotypes reve

SUBMITTER: Ismail A 

PROVIDER: S-EPMC9509324 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature