PpERF1b-like enhances lignin synthesis in pear (Pyrus pyrifolia) 'hard-end' fruit.

ABSTRACT: The hard-end is a disorder of pear fruit, however, the mechanisms underlying its development remain unknown. In this study, we found that the hard-end fruit contained a higher transcript abundance level of ethylene-response factor 1b-like (PpERF1b-like) and released more ethylene compared to normal pear. In the ethephon treated normal fruit, flesh tissues accumulated more lignin together with elevated expression of PpERF1b-like. Overexpressing PpERF1b-like transiently in fruit and stably in callus increased lignin accumulation and the expression of lignin biosynthesis genes; the opposite results were observed in fruit showing repressed expression of PpERF1b-like. These results confirmed the role of PpERF1b-like in promoting hard-end formation throu

SUBMITTER: Jin X 

PROVIDER: S-EPMC9797680 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature