Genome-wide identification and expression analysis of the Citrus malectin domain-containing receptor-like kinases in response to arbuscular mycorrhizal fungi colonization and drought
文献类型: 外文期刊
作者: Luo, Chun 1 ; Sun, Qiaofeng 3 ; Zhang, Fei 1 ; Zhang, Dejian 1 ; Liu, Chunyan 1 ; Wu, Qiangsheng 1 ; Shu, Bo 1 ;
作者机构: 1.Yangtze Univ, Coll Hort & Gardening, Jingzhou 434025, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Trop Fruit Biol, Minist Agr, Zhanjiang 524091, Peoples R China
3.Wuhan Forestry Stn, Wuhan 432200, Peoples R China
关键词: Gene structure; Malectin; Phylogenetic analysis; Transcriptional expression
期刊名称:HORTICULTURE ENVIRONMENT AND BIOTECHNOLOGY ( 影响因子:1.842; 五年影响因子:2.083 )
ISSN: 2211-3452
年卷期: 2020 年 61 卷 5 期
页码:
收录情况: SCI
摘要: Malectin-like domain-containing receptor-like kinases (MRLKs) compose a big and diverse protein family in plants that plays significant roles in biotic and abiotic stress response. However, the MRLK family members in Citrus, as well as their roles during drought stress (abiotic stress) and arbuscular mycorrhizal fungi (AMF) colonization, remain relatively unknown. In the present study, we characterized theMRLKfamily genes in Citrus. By analyzing the presence of malectin-like domains and searching through the Citrus genome, we identified 47CsMRLKslocated within nine chromosomes, with mostCsMRLKsmainly located on chromosome 1. These 47CsMRLKfamily members were classified into 6 subfamilies with distinct malectin domains. Gene expression analysis showed that all 47CsMRLKswere expressed in the roots and exhibited differential expression patterns. During the drought stress response,CsMRLK6,7,8,9,10,11,19,25,26, and40were downregulated. AMF colonization downregulated the expression ofCsMRLK6,10,11,12,14,17,20,30,35,43, and47and upregulated the expression ofCsMRLK2,5,13,21,22,28,29, 32,38,41,45, and46. In addition, AMF colonization and drought stress showed a synergistic effect, in which the downregulated genes became even more weakened and the upregulated genes became even more enhanced. The present study offers useful perception into the CitrusMRLKgene family and its responses in AMF colonization and drought stress.
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