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Genome-wide investigation and expression analysis of membrane-bound fatty acid desaturase genes under different biotic and abiotic stresses in sunflower (Helianthus annuus L.)

文献类型： 外文期刊

作者： Li, Juanjuan 1 ; Liu, Ake 2 ; Najeeb, Ullah 3 ; Zhou, Weijun 4 ; Liu, Hui 5 ; Yan, Guijun 5 ; Gill, Rafaqat Ali 7 ; Yun, 1 ;

作者机构： 1.Zhejiang Sci Tech Univ, Coll Life Sci & Med, Zhejiang Prov Key Lab Plant Secondary Metab & Reg, Hangzhou 310018, Peoples R China

2.Changzhi Univ, Fac Biol Sci & Technol, Changzhi 046011, Shanxi, Peoples R China

3.Univ Queensland, Ctr Plant Sci, Queensland Alliance Agr & Food Innovat, Toowoomba, Qld 4350, Australia

4.Zhejiang Univ, Inst Crop Sci, Zhejiang Key Lab Crop Germplasm, Hangzhou 310058, Peoples R China

5.Univ Western Australia, Fac Sci, UWA Sch Agr & Environm, Crawley, WA 6009, Australia

6.Univ Western Australia, Fac Sci, UWA Inst Agr, Crawley, WA 6009, Australia

7.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Wuhan 430062, Peoples R China

8.Inner Mongolia Acad Agr & Anim Husb Sci, Inst Plant Protect, Hohhot 010031, Peoples R China

关键词： Sunflower; Fatty acid desaturases; Gene family; Tandem duplication; Biotic and abiotic stresses

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 2019影响因子：5.162； 五年影响因子：5.137 ）

ISSN： 0141-8130

年卷期： 2021 年 175 卷

页码：

收录情况： SCI

摘要： Membrane-bound fatty acid desaturase (FAD) gene family plays crucial roles in regulation of fatty acid (FA) compositions in plants. Sunflower (Helianthus annuus L.) is an important oilseed crop in the world; however, no comprehensive study on exploring the role of FAD family in relation to stress tolerance in sunflower has been performed yet. In this study, we identified 40 putative FAD genes in H. annuus (HaFAD), which were unevenly distributed across 13 of the total 17 chromosomes. Phylogenetic analysis indicated that HaFAD genes were divided into four subfamilies, as supported by highly conserved gene structures and motifs. Collinearity analysis showed that tandem duplication events played a crucial role in the expansion of HaFAD gene family. In addition, tissue-specific expression showed that 32 HaFAD genes were widely expressed in various tissues or organs of sunflower. Furthermore, qRT-PCR results revealed significant expression changes of HaFAD genes in response to abiotic (cadmium, drought) and biotic (Orobanche cumana) stresses, suggesting their important functions in response to different stresses. Therefore, our results provide insights into HaFAD gene family in response to different stresses, and some specific up-regulated genes such as HaFAD32, HaADS8, HaFAD2.1, and HaADS9 would be the potential candidate genes for the sunflower tolerance breeding. (C) 2021 Elsevier B.V. All rights reserved.

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