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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 through promoting lignin synthesis. This study provided valuable information for further clarifying the regulation of hard-end formation in pear.

SUBMITTER: Jin X

PROVIDER: S-EPMC9797680 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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

Jin Xiaoshan X Cheng Chenxia C Qi Qi Q Zhou Suping S Wang Caihong C Zhang Yong Y Sun Chao C Wang Yuling Y Dang Ruihong R Yang Shaolan S

Frontiers in plant science 20221215

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 ...[more]

PMID: 36589086

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