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Genome-wide characterization and function analysis uncovered roles of wheat LIMs in responding to adverse stresses and TaLIM8-4D function as a susceptible gene

文献类型: 外文期刊

作者: Li, Yiting 1 ; Liu, Xi 1 ; Xiao, Yongxin 1 ; Wen, Yong 1 ; Li, Keke 1 ; Ma, Zhaolan 1 ; Yang, Lijun 2 ; Zhu, Yongxing 1 ; Yin, Junliang 1 ;

作者机构: 1.Yangtze Univ, Coll Hort & Gardening, Coll Agr, Hubei Key Lab Waterlogging Disaster & Agr Use Wet, Jingzhou 434025, Hubei, Peoples R China

2.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Hubei Key Lab Crop Dis Insect Pests & Weeds Contr, Minist Agr,Key Lab Integrated Lest Management Cro, Wuhan 430064, Hubei, Peoples R China

期刊名称:PLANT GENOME ( 影响因子:4.219; 五年影响因子:5.826 )

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收录情况: SCI

摘要: The Lin-11, Isl-1, and Mec-3 domains (LIM) transcription factors play essential roles in regulating plant biological processes. Despite that, there is a lack of a full understanding of LIMs in wheat (Triticum aestivum L.). In this study, 28 wheat LIM s (TaLIMs) were identified and designated as TaLIM1-1A to TaLIM12-7D. The cis-regulatory element analysis showed that TaLIMs were rich in elements related to biological and abiotic stresses. Expression profiling analysis showed that certain members of TaLIMs were responsive to biotic and abiotic stresses, such as TaLIM1-1A, TaLIM3-2B, TaLIM8-4D, and TaLIM10-5D, were significantly induced by heat, drought, sodium chloride (NaCl), abscisic acid (ABA) and Fusarium graminearum stresses. Furthermore, the biological function of TaLIM8-4D was analyzed and results showed that it was subcellular localization in the nucleus and could induce weak cell death in Nicotiana benthamiana leaves. Additionally, overexpression of TaLIM8-4D could upregulate plant pathogenesis-related (PR) genes, promoting the infection of hemibiotrophic pathogen, implying that TaLIM8-4D could function as susceptible gene in the nucleus by upregulating PR genes and inducing cell death to promote the colonization of hemibiotrophic agent F. graminearum. Overall, the systematic identification, characterization, expression profiling, evolutionary, and function analyses provided the ability to understand TaLIMs and laid a foundation for the further function study of LIM family members in wheat.

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