Expression of ClPAP and ClPSY1 in watermelon correlates with chromoplast differentiation, carotenoid accumulation, and flesh color formation

文献类型： 外文期刊

第一作者： Fang, Xufeng

作者： Fang, Xufeng;Liu, Shi;Gao, Peng;Liu, Hongyu;Wang, Xuezheng;Luan, Feishi;Fang, Xufeng;Liu, Shi;Gao, Peng;Liu, Hongyu;Wang, Xuezheng;Luan, Feishi;Zhang, Qian;Dai, Zuyun

作者机构：

关键词： Watermelon; Carotenoids; Chromoplast differentiation; Gene expression

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

ISSN： 0304-4238

年卷期： 2020 年 270 卷

页码：

收录情况： SCI

摘要： Chromoplast differentiation during flesh development in different watermelon varieties was observed by optical and transmission electron microscopy. Carotenoid analyses by LC-MS/MS revealed that red-fleshed watermelon mainly accumulated lycopene, which eventually shaped into a crystalloid chromoplast near maturation, while the accumulation of other carotenoids led to the formation of globular chromoplasts. Expressions of three phytoene synthase genes (GlPSY) and seven plastid lipid-associated genes (ClPAP) in different flesh development stages were analyzed. Based on our results, the expression of ClPSYI was consistent with the accumulation of phytofluene and total carotenoids, while that of ClPAP (Cla014416) was consistent with ClPSYI. CDS and promoter sequence variations of ClPSYI and Cla014416 may be the main reason for the significant expression levels based on gene and promoter cloning.

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