Analysis of Gene Family and Its Function on Cell Lignification in Pears ().

Class III peroxidases (PRXs) are plant-specific enzymes that play key roles in the responses to biotic and abiotic stress during plant growth and development. In addition, some peroxidases also play roles in plant lignification. In this study, a total of 114 (designated ) genes were identified in the pear () genome based on systematic analysis.

regulates lignification during stone cell development in pear () fruit.

Programmed cell death (PCD) and secondary cell wall (SCW) thickening in pear fruit are accompanied by the deposition of cellulose and lignin to form stone cells. Metacaspase is an important protease for development, tissue renewal and PCD. The understanding of the molecular mechanism whereby pear () metacaspase promotes PCD and cell wall lignification is still limited.