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Cell wall metabolism and related gene expression in Malus domestica Borkh. during fruit growth and softening

文献类型： 外文期刊

作者： Qi, Xiu-dong 1 ; Wei, Jian-mei 2 ; Li, Haishan 3 ; Zhao, Dan 4 ;

作者机构： 1.Hebei Normal Univ Sci & Technol, Qinhuangdao 066004, Peoples R China

2.Environm Management Coll China, Dept Ecol, Qinhuangdao 066004, Peoples R China

3.Hebei Acad Agr & Forestry Sci, Shijiazhuang 050051, Peoples R China

4.Shijiazhuang Vocat Coll Ind & Commerce, Shijiazhuang 050091, Peoples R China

关键词： China;apple;Malus domestica;fruit development;cell wall metabolism;gene expression

期刊名称：FRUITS （ 影响因子：0.8； 五年影响因子：1.107 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Introduction. Pre-harvest fruit development of apple can have a great effect on its storable quality. However, little research has focused on fruit metabolism during growth. Our objective was to study cell wall metabolism during the various stages of fruit growth and softening to gain more insight into the nature of fruit development and ripening. Materials and methods. Apple varieties Fuji and Golden Delicious (GD) were used to investigate cell wall metabolism and related gene expression during fruit growth and softening. Results and discussion. During fruit growth, cell wall components underwent similar changes in the two cultivars although the covalent soluble pectin (CSP) content in Fuji fruit was much higher than that in GD fruit. The activities of cell wall enzymes and the related gene expression indicated that cell wall degradation was involved in fruit growth. However, these changes showed significant differences between the two cultivars during storage. The water soluble pectin (WSP) content increased more rapidly and the content of CSP and hemi-cellulose decreased more obviously, showing a more significant correlation with firmness loss in GD fruit than with Fuji. Accordingly, the activities of cell wall enzymes and the related gene expression were significantly higher in the GD fruit. Conclusion. Cell wall metabolism and the related gene expression showed significant differences between Fuji and GD fruit during growth and softening. Both acted on fruit growth and enlargement but revealed a significant cultivar-dependency with regards to fruit softening.

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