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
作者： Fang, Xufeng 1 ; Liu, Shi 1 ; Gao, Peng 1 ; Liu, Hongyu 1 ; Wang, Xuezheng 1 ; Luan, Feishi 1 ; Zhang, Qian 3 ; Dai, Zuyu 1 ;
作者机构： 1.Northeast Agr Univ, Key Lab Biol & Genet Improvement Hort Crops, Minist Agr & Rural Affairs, 600 Changjiang Rd, Harbin 150030, Heilongjiang, Peoples R China
2.Northeast Agr Univ, Hort & Landscape Architecture Coll, 600 Changjiang Rd, Harbin 150030, Heilongjiang, Peoples R China
3.Anhui Acad Agr Sci, Hort Inst, 40 NongkeNan Rd, Hefei 230031, Anhui, Peoples R China
4.Anhui Jianghuai Hort Technol Co Ltd, 77 Yang Qiao Rd, Hefei 230031, Anhui, Peoples R China
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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