Genome-wide analysis of polygalacturonase gene family from pear genome and identification of the member involved in pear softening.

ABSTRACT:

Background

Polygalacturonase (PG), as an important hydrolase participating in the degradation of pectin, plays an important role in softening process of fruit. However, information on PG gene family in pear genome and the specific member involved in fruit softening is still rudimentary.

Results

In this study, a total of 61 PG genes, which could be divided into six subclasses, were identified from the pear genome with diverse chromosome locations, gene structures, motifs and cis-acting elements. Most PbrPGs were derived from WGD/segmental duplication blocks, and purifying selection was the main driving force for their expansion. The expression profiles of PbrPGs in pear were tissue/development-stage/cultivar-dependent. During 'Housui' pear storage, associated with the reducti

SUBMITTER: Zhang S 

PROVIDER: S-EPMC6935220 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature