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当前位置: 首页 > 文章 > Effects of calcium application on apple fruit softening during storage revealed by proteomics and phosphoproteomics 园艺学报(英文版) 2022,8 (4)
Position: Home > Articles > Effects of calcium application on apple fruit softening during storage revealed by proteomics and phosphoproteomics Horticultural Plant Journal 2022,8 (4)

Effects of calcium application on apple fruit softening during storage revealed by proteomics and phosphoproteomics

作  者：
Yaxiu Xu;Jiaojiao Liu;Nannan Zang;Zepeng Yin;Aide Wan
单  位：
Key Laboratory of Fruit Postharvest Biology, Key Laboratory of Protected Horticulture, National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866 China;Key Laboratory of Fruit Postharvest Biology, Key Laboratory of Protected Horticulture, National and Local Joint Engineering Research Center of Northern Horticultural Facilities Design and Application Technology, College of Horticulture, Shenyang Agricultural University, Shenyang 110866 China;Key Laboratory of Fruit Postharvest Biology, Key Laboratory of Protected Horticulture, National and Local Joint Engineering Research Center of Northern Horticultural Facilities Design and Application Technology, College of Horticulture, Shenyang Agricultural University, Shenyang 110866 Chin
关键词：
Apple;Proteomics;Phosphoproteomics;Calcium;Fruit ripenin
摘  要：
Fruit ripening has been reported to be related to calcium (Ca), but the underlying mechanisms by which Ca regulates this process remain largely unknown. In order to study the changes of proteins and enriched phosphopeptides, we conducted TMT labeling, bio-material-based PTM enrichment based on mass spectrometry in Ca-treated ‘Golden Delicious’ (GD) apple fruit (Malus × domestica). This dataset presents a comprehensive overview of the critical pathways involved in fruit ripening. A total of 47 proteins and 124 phosphoproteins significantly changed in Ca-treated fruit, which are crucial for regulating the cell wall and cytoskeleton, Ca-mediated signaling and transport, ethylene production, protein fate, especially ubiquitination-based protein degradation, and primary and secondary metabolisms. Our results indicated that Ca inhibited the abundance of polygalacturonase (PG) activity and increased the phosphorylation level of CSLD3. PG and phosphorylation were involved in cell wall degradation, thereby delaying fruit softening. As a secondary messenger, Ca-mediated signaling subsequently triggered downstream mitogen-activated protein kinases (MAPK) cascades and activated the membrane, transport, and ROS signaling. Moreover, MdEIN2, a key enzyme involved in the ubiquitin of protein modification, increased at Ser753 and Ser758 in Ca-treated fruit. Furthermore, diverse primary and secondary metabolisms including glycolysis, fatty acid metabolism, and oxidation respiratory chain were modulated to prevent fruit softening. These results provide basic information from protein and phosphorylation levels for apple fruit ripening during storage, which may be helpful for apple fruit storage control.

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