Identification of Key Genes Controlling Carotenoid Metabolism during Apricot Fruit Development by Integrating Metabolic Phenotypes and Gene Expression Profiles
文献类型： 外文期刊
作者： Zhou, Weiquan 1 ; Zhao, Shirong 1 ; Xu, Min 1 ; Niu, Yingying 1 ; Nasier, Mansur 1 ; Fan, Guoquan 2 ; Quan, Shaowen 3 ; Zhang, Shikui 2 ; Wang, Yatong 2 ; Liao, Kang 1 ;
作者机构： 1.Xinjiang Agr Univ, Coll Hort & Forestry, Res Ctr Characterist Fruit Tree, Urumqi 830052, Xinjiang, Peoples R China
2.Xinjiang Acad Agr Sci, Luntai Natl Fruit Germplasm Resources Garden, Luntai 841600, Xinjiang, Peoples R China
3.Shihezi Univ, Coll Agr, Dept Hort, Shihezi 832003, Xinjiang, Peoples R China
关键词： Apricot; Flesh; carotenoids; targeted metabonomics; transcriptomics; DEGs
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： 2021 年 69 卷 32 期
页码：
收录情况： SCI
摘要： To explore the metabolic basis of carotenoid accumulation in different developmental periods of apricot fruits, targeted metabonomic and transcriptomic analyses were conducted in four developmental periods (S1-S4) in two cultivars (Prunus armeniaca cv. "Kuchebaixing" with white flesh and P. armeniaca cv. "Shushangganxing" with orange flesh) with different carotenoid contents. 14 types of carotenes and 27 types of carotene lipids were identified in apricot flesh in different developmental periods. In S3 and S4, the carotenoid contents of the two cultivars were significantly different, and fi-carotene and (E/Z)-phytoene were the key metabolites that caused the difference in the total carotenoid content between the examined cultivars. Twenty-five structural genes (including genes in the methylerythritol 4-phosphate and carotenoid biosynthesis pathways) related to carotenoid biosynthesis were identified among the differentially expressed genes in different developmental periods of the two cultivars, and a carotenoid metabolic pathway map of apricot fruits was drawn according to the KEGG pathway map. The combined analysis of carotenoid metabolism data and transcriptome data showed that PSY, NCED1, and CCD4 were the key genes leading to the great differences in the total carotenoid content. The results provide a new approach to study the synthesis and accumulation of carotenoids in apricot fruits.
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