Genome-Wide Identification and Functional Differentiation of Fatty Acid Desaturase Genes in Olea europaea L.
文献类型： 外文期刊
作者： Niu, Erli 1 ; Gao, Song 1 ; Hu, Wenjun 1 ; Zhang, Chengcheng 1 ; Liu, Daqun 1 ; Shen, Guoxin 1 ; Zhu, Shenlong 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Hangzhou 310021, Peoples R China
2.Key Lab Digital Dry Land Crops Zhejiang Prov, Hangzhou 310021, Peoples R China
关键词： olive (Olea europaea L.); fatty acid desaturase; phylogenetic analysis; morphogenesis; stress response
期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）
ISSN：
年卷期： 2022 年 11 卷 11 期
页码：
收录情况： SCI
摘要： Olive (Olea europaea L.) is a world-famous woody oil tree and popular for redundant unsaturated fatty acids. Fatty acid desaturase (FAD) genes are responsible for fatty acid desaturation and stress regulation but have not yet been identified in olive at the whole genome level. This study identified 40 and 27 FAD genes in the cultivated olive O. europaea cv. Farga and the wild olive O. europaea var. Sylvestris, respectively. Phylogenetic analysis showed that all the FAD genes could be classified into the soluble FAB2/SAD Glade and membrane-bound Glade, including ADS/FADS, DES, FAD4, SLD, omega-6 and omega-3, with the high consistency of subcellular localization, motif composition and exon-intron organization in each group. FAD genes in olive showed the diverse functional differentiation in morphology of different tissues, fruit development and stress responses. Among them, OeFAB2.8 and OeFAD2.3 were up-regulated and OeADS.1, OeFAD4.1 and OeFAD8.2 were down-regulated under the wound, Verticillium dahliae and cold stresses. This study presents a comprehensive analysis of the FAD genes at the whole-genome level in olives and will provide guidance for the improvement of oil quality or stress tolerance of olive trees.
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