Different Activities of Pectin-degrading Enzymes Affecting the Growth of Asian Pears

• DOI: 10.7235/hort.20230046
• Publication Date: 2023-10-27T04:55:30Z
• Authors: Yun-Ju Baek; Sang Wook Park; Bok-Rye Lee; Ung Yang; Sol Han; Seung Gon Wi; Sang-Hyun Lee
• Keywords: Pectin

Fruit size is determined by the number and of cells resulting from cell division expansion, which are correlated with changes in wall content. The pivotal roles pectin-methylesterase (PME) polygalacturonase (PG) have been well documented regard to fruit ripening. Therefore, this study analyzed growth pectin contents for three consecutive years (from 2019 2021) until 180 days after full bloom (DAFB) at 15-day intervals examine how components affects development. Although there were no differences harvest these years, absolute rate (AGR) peaked most rapidly 2020, reaching maximum earlier compared other two years. content fruits showed fastest growth, remained a low level early growing season those change pattern gradual increase PG activity decrease PME resulted correspondingly different intersecting points over We found that intersection activities observed order 2021, was identical when reached their final weight. Interestingly, timeline coincided point time AGR increased Differences volume increases, contents, pectin-degrading enzyme during suggest one key factors influencing expansion activation. Taken together, results indicate may affect development, turn Asian pears.