Differential gene expression and potential regulatory network of fatty acid biosynthesis during fruit and leaf development in yellowhorn (Xanthoceras sorbifolium), an oil-producing tree with significant deployment values
文献类型： 外文期刊
作者： Shi, Tian-Le 1 ; Ma, Hai-Yao 1 ; Wang, Xinrui 1 ; Liu, Hui 1 ; Yan, Xue-Mei 1 ; Tian, Xue-Chan 1 ; Li, Zhi-Chao 1 ; Bao, Yu-Tao 1 ; Chen, Zhao-Yang 1 ; Zhao, Shi-Wei 1 ; Xiang, Qiuhong 1 ; Jia, Kai-Hua 3 ; Nie, Shuai 4 ; Guan, Wenbin 1 ; Mao, Jian-Feng 1 ;
作者机构： 1.Beijing Forestry Univ, Coll Biol Sci & Technol, Sch Ecol & Nat Conservat, State Key Lab Tree Genet & Breeding,Minst Educ, Beijing, Peoples R China
2.Beijing Forestry Univ, Coll Biol Sci & Technol, Key Lab Genet & Breeding Forest Trees & Ornamenta, Minist Educ,Sch Ecol & Nat Conservat, Beijing, Peoples R China
3.Shandong Acad Agr Sci, Inst Crop Germplasm Resources, Jinan, Peoples R China
4.Guangdong Acad Agr Sci, Guangzhou, Peoples R China
5.Rice Res Inst, Coconstruct Minist & Prov, Key Lab Genet & Breeding High Qual Rice Southern, Guangzhou, Peoples R China
6.Minist Agr & Rural Affairs, Guangzhou, Peoples R China
7.Rice Res Inst, Guangdong Key Lab New Technol Rice Breeding, Guangzhou, Peoples R China
8.Umea Univ, Umea Plant Sci Ctr, Dept Plant Physiol, Umea, Sweden
关键词： fatty acid biosynthesis; time-ordered gene co-expression network (TO-GCN); oleosins; fruit and leaf development; yellowhorn
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2024 年 14 卷
页码：
收录情况： SCI
摘要： Xanthoceras sorbifolium (yellowhorn) is a woody oil plant with super stress resistance and excellent oil characteristics. The yellowhorn oil can be used as biofuel and edible oil with high nutritional and medicinal value. However, genetic studies on yellowhorn are just in the beginning, and fundamental biological questions regarding its very long-chain fatty acid (VLCFA) biosynthesis pathway remain largely unknown. In this study, we reconstructed the VLCFA biosynthesis pathway and annotated 137 genes encoding relevant enzymes. We identified four oleosin genes that package triacylglycerols (TAGs) and are specifically expressed in fruits, likely playing key roles in yellowhorn oil production. Especially, by examining time-ordered gene co-expression network (TO-GCN) constructed from fruit and leaf developments, we identified key enzymatic genes and potential regulatory transcription factors involved in VLCFA synthesis. In fruits, we further inferred a hierarchical regulatory network with MYB-related (XS03G0296800) and B3 (XS02G0057600) transcription factors as top-tier regulators, providing clues into factors controlling carbon flux into fatty acids. Our results offer new insights into key genes and transcriptional regulators governing fatty acid production in yellowhorn, laying the foundation for efforts to optimize oil content and fatty acid composition. Moreover, the gene expression patterns and putative regulatory relationships identified here will inform metabolic engineering and molecular breeding approaches tailored to meet biofuel and bioproduct demands.
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