GSE205428 Unveiling the molecular mechanism involving anthocyanins in pineapple peel discoloration during fruit maturation

Contributors : Aiping Luan ; Wei Zhang ; Mingzhe Yang ; Ziqin Zhong ; Jing Wu ; Yehua He ; Junhu HeSeries Type : Expression profiling by high throughput sequencingOrganism : Ananas comosusPeel color is a key factor that affects the fruit ’s aesthetic and economic values. In Red Sugar pineapple, the peels’ red color reduces during maturation. Limited knowledge is available on the regulation of pineapple peel discoloration, which makes it important to study the molecular mechanisms associated with this important trait. Here, we re port that a decrease in anthocyanin biosynthesis is predominantly associated with the pineapple peel color change during maturation. Particularly the exclusive accumulation of cyanidin in 60 days after flowering (DAF) as compared to 120 DAF gives the fruit peel its distinct reddish color. Our findi ngs suggest that the changes in the expression of key structural genes (early and late biosynthetic genes) of the anthocyanin (cyanidin) biosynthesis pathway are responsible for peel discoloration. Based on a gene co-expression analysis and a transient expression, we identified two transcription fac tors i.e., AcHOX21 and AcMYB12, and showed that their downregulation leads to the reduced anthocyanin accumulation with fruit maturation.

Source: GEO: Gene Expression Omnibus - May 31, 2023 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Ananas comosus Source Type: research