Integrative Metabolic and Transcriptomic Profiling in Camellia oleifera and Camellia meiocarpa Uncover Potential Mechanisms That Govern Triacylglycerol Degradation during Seed Desiccation
文献类型： 外文期刊
作者： Chen, Mingjie 1 ; Zhang, Yi 2 ; Du, Zhenghua 2 ; Kong, Xiangrui 4 ; Zhu, Xiaofang 2 ;
作者机构： 1.Xinyang Normal Univ, Coll Life Sci, Int Joint Lab Biol & High Value Utilizat Camellia, Xinyang 464000, Peoples R China
2.Fujian Agr & Forestry Univ, Haixia Inst Sci & Technol, Ctr Hort Biol & Metabol, Fuzhou 350002, Peoples R China
3.Nanchang Univ, Sch Life Sci, Nanchang 330031, Peoples R China
4.Fujian Acad Agr Sci, Tea Res Inst, Fuzhou 350012, Peoples R China
5.Xianyang Jingwei Fu Tea Co Ltd, Xianyang 712044, Peoples R China
关键词： Camellia oleifera; Camellia meiocarpa; fatty acids; oil content; transcriptome; differentially expressed gene; lipid degradation; seed desiccation
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN：
年卷期： 2023 年 12 卷 14 期
页码：
收录情况： SCI
摘要： Camellia seed oil is a top-end quality of cooking oil in China. The oil quality and quantity are formed during seed maturation and desiccation. So far, it remains largely unresolved whether lipid degradation occurs and contributes to Camellia oil traits. In this study, three different Camellia germplasms, C. oleifera cv. Min 43 (M43), C. meiocarpa var. Qingguo (QG), and C. meiocarpa cv Hongguo (HG) were selected, their seed oil contents and compositions were quantified across different stages of seed desiccation. We found that at the late stage of desiccation, M43 and QG lost a significant portion of seed oil, while such an event was not observed in HG. To explore the molecular bases for the oil loss In M43, the transcriptomic profiling of M43 and HG was performed at the early and the late seed desiccation, respectively, and differentially expressed genes (DEGs) from the lipid metabolic pathway were identified and analyzed. Our data demonstrated that different Camellia species have diverse mechanisms to regulate seed oil accumulation and degradation, and that triacylglycerol-to-terpenoid conversion could account for the oil loss in M43 during late seed desiccation.
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