Genome-wide investigation of bHLH genes and expression analysis under different biotic and abiotic stresses in Helianthus annuus L.
文献类型： 外文期刊
作者： Li, Juanjuan 1 ; Li, Xin 1 ; Han, Peng 2 ; Liu, Hui 3 ; Gong, Jianchuan 2 ; Zhou, Weijun 5 ; Shi, Bixian 6 ; Liu, Ake 2 ; Xu 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, Dept Life Sci, Changzhi 046011, Peoples R China
3.Univ Western Australia, Fac Sci, UWA Sch Agr & Environm, Crawley, WA 6009, Australia
4.Univ Western Australia, Fac Sci, UWA Inst Agr, Crawley, WA 6009, Australia
5.Zhejiang Univ, Lab Spect Sensing, Minist Agr & Rural Affairs, Inst Crop Sci, Hangzhou 310058, Peoples R China
6.Xinjiang Acad Agr Sci, Inst Econ Crops, Urumqi 830091, Peoples R China
关键词： Sunflower; bHLH gene family; Phylogenetic analysis; HabHLH024 gene; Abiotic and biotic stresses
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）
ISSN： 0141-8130
年卷期： 2021 年 189 卷
页码：
收录情况： SCI
摘要： The basic helix-loop-helix (bHLH) transcription factors play important roles in many processes such as plant growth, metabolism and response to biotic/abiotic stresses. Sunflower (Helianthus annuus) is a major oil crop, cultivated throughout the world. However, no systematic characterization of bHLH gene members in sunflower (HabHLH) and their functions involved in drought, cadmium tolerance and Orobanche cumana resistance has been reported yet. In this study, 183 HabHLH genes were identified and named according to their chromosomal locations. We classified these proteins into 21 subfamilies by phylogenetic tree analysis. Subsequently, DNAbinding patterns, sequence analysis, duplication analysis and gene structures were analyzed. All of the HabHLH genes were randomly distributed on 17 chromosomes, and 10 pairs of tandem duplicated genes and one pair of segmental duplicated genes were detected in the HabHLH family. Among the duplicated gene pairs, eight pairs of HabHLH genes suffer from positive selection. Moreover, qRT-PCR results revealed significant upregulated expression of HabHLH024 gene in response to both abiotic (cadmium, drought) and biotic (Orobanche cumana) stresses, suggesting its important functions in response to different stresses. Therefore, HabHLH024 would be the potential candidate gene for the sunflower tolerance breeding.
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