Molecular analysis of the processes of surface brown spot (SBS) formation in pear fruit (Pyrus bretschneideri Rehd. cv. Dangshansuli) by de novo transcriptome assembly.

ABSTRACT: Browning disorder, which usually occurs post-harvest in pears subjected to long-term storage, can cause browning of the pear flesh and/or core. In 2011, investigators in China found a novel type of brown spot (designated as surface brown spot, SBS) in pre-harvest 'Dangshansuli' pears (Pyrus bretschneideri Rehd.). SBS has a large impact on the exterior quality of the pears. Interestingly, the brown coloration was only found on the peel and not the flesh or the core. In this paper, de novo transcriptome analysis of the exocarp of pears with SBS using Illumina sequencing showed that SBS up-regulated the expression of genes related to oxidative phosphorylation, phenolic compound synthesis and polyphenoloxidase (PPO), and SBS was associated with inhibition of primary and secondary metabolism ge

SUBMITTER: Liu P 

PROVIDER: S-EPMC3776823 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature