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Characterization of Starch in Cucurbita moschata Germplasms throughout Fruit Development

文献类型： 外文期刊

作者： Abbas, Hafiz Muhammad Khalid 1 ; Huang, He-Xun 1 ; Yang, Yu-Fei 1 ; Xie, Yuan-Heng 1 ; Zou, Jian-Feng 1 ; Xue, Shu- 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou 510640, Peoples R China

2.Guangdong Key Lab New Technol Res Vegetables, Guangzhou 510640, Peoples R China

3.Foshan Univ, Coll Food Sci & Engn, Dept Hort, Foshan 528000, Peoples R China

关键词： amylose; amylopectin; Cucurbita moschata; qRT-PCR; starch; SEM; TEM

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

ISSN： 0021-8561

年卷期： 2020 年 68 卷 36 期

页码：

收录情况： SCI

摘要： Pumpkins (Cucurbita moschata; Cucurbitaceae) are the rich source of nutrients and valued for their biologically active substances to be used for the treatment of several diseases. The contents, composition, and conformation of starch are the significant quality traits of C. moschata. Two germplasms were targeted for analysis regarding the taste difference. Results indicated that the total starch contents and amylose/amylopectin ratio were high in CMO-X as compared to CMO-E during each fruit development stage. Scanning electron microscopy and transmission electron microscopy observations revealed that smooth surface starch granules fused together to enhance the starch accumulation. For a comparison of fruit development in CMO-E and CMO-X, the putative pathway for starch metabolism was developed and homologs were identified for each key gene involved in the pathway. GBSS and SBE were correlated with the difference in the amylose/amylopectin ratio of CMO-E and CMO-X. Conclusively, the developmental regulation of genes associated with starch accumulation can be considered as an important factor for the determination of fruit quality.

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