The Expression Pattern and Interaction Analysis of the Homologues of Splicing Factor SC35 in Setosphaeria turcica
LI TianCong,1, ZHU Hang,1, WEI Ning1, LONG Feng1, WU JianYing1, ZHANG Yan1, DONG JinGao2,3, SHEN Shen,1, HAO ZhiMin,1,21College of Life Sciences/Key Laboratory of Hebei Province for Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding 071001, Hebei 2State Key Laboratory of North China Crop Improvement and Regulation, Baoding 071001, Hebei 3College of Plant Protection, Hebei Agricultural University, Baoding 071001, Hebei
Abstract 【Objective】The objective of this study is to obtain the homologous genes of the splicing factor SC35 in Setosphaeria turcica, and to analyze the interaction among them and the expression profiles during the different growth and development stages and infection process of the pathogen. It would lay the foundation for illustrating the relationship between the SC35 family members and fungal pathogenicity.【Method】Based on amino acid sequences of SC35 protein in Arabidopsis thaliana as probe sequences, online Blastp alignment was carried out in the S. turcica genome database to obtain candidate SC35 homologues. Then they were analyzed for conserved domain and phylogenetic relationship through bioinformatics procedures. The materials of S. turcica were collected at different infection stages on maize leaves and multiple developmental stages, such as hyphae, conidia, germ tubes, appressorium and penetration hyphae, to analyze the transcription levels of SC35 homologues through real-time quantitative PCR (qRT-PCR). And their interactions were verified in vitro by the yeast two-hybrid test.【Result】Eight SC35 genes of S. turcica were obtained, named as StSC1, StSC2, StSC3, StSC4, StSC5, StSC6, StSC7, and StSC8, respectively. All of them owned typical SR protein domains, besides StSC1 showed two RRM domains. They located at different physical locations of the genome and had no linkage. Phylogenetic analysis showed that the eight alternative splicing factors were distributed in different clades, with low homology. In the process of infection on maize leaves, gene StSC1, StSC2, StSC3, StSC4, StSC5, StSC6 and StSC8 were up-regulated, while StSC7 was down-regulated at 18 h after inoculation. StSC4 showed high expression activity at 6-18 h. In different development periods, the expression levels of StSC1 were extremely significant up-regulated (P<0.001) in the appressorium and the formation of penetration hyphae, which were 24.44 and 8.25 times higher than those in the conidial period, but the others were down-regulated during the development. The yeast two-hybrid proved that StSC4 interacted with StSC6, StSC3 with StSC8, StSC3 with StSC4, and StSC8 with StSC4. 【Conclusion】The expression patterns of SC35 are different in the infection process and multiple developmental stages of S. turcica. StSC4 is actively expressed throughout the infection process. StSC1, StSC4 and StSC6 play important regulatory roles during the formation of appressorium and penetration hyphae. StSC4 and StSC6, StSC3 and StSC8, StSC3 and StSC4, StSC8 and StSC4 interact to regulate the formation of splicing complexes. Keywords:Setosphaeria turcica;alternative splicing factor;qRT-RCR;yeast two-hybrid
PDF (953KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 李天聪, 朱行, 魏宁, 龙凤, 武建颖, 张燕, 董金皋, 申珅, 郝志敏. 玉米大斑病菌SC35同源基因表达规律与互作分析[J]. 中国农业科学, 2021, 54(4): 733-743 doi:10.3864/j.issn.0578-1752.2021.04.006 LI TianCong, ZHU Hang, WEI Ning, LONG Feng, WU JianYing, ZHANG Yan, DONG JinGao, SHEN Shen, HAO ZhiMin. The Expression Pattern and Interaction Analysis of the Homologues of Splicing Factor SC35 in Setosphaeria turcica[J]. Scientia Acricultura Sinica, 2021, 54(4): 733-743 doi:10.3864/j.issn.0578-1752.2021.04.006
PDA培养基、水琼脂培养基、玻璃纸、YPD培养基、二缺培养基、三缺培养基、四缺培养基;总RNA提取试剂盒、RNA反转录试剂盒购于生工生物工程(上海)股份有限公司。PrimeScript?RT reagent Kit(Perfect Real Time)试剂盒,SYBR? Premix Ex TaqTM II(Perfect Real Time)和T4 DNA连接酶均购自TaKaRa(中国大连)公司,2×TransStart? FastPfu PCR SuperMix(-dye)购自全式金(北京)公司,BM无缝克隆试剂盒(CL116-01)购自博迈德(北京)公司,引物均由生工生物工程(上海)股份有限公司合成。
Fig. 6Verification of the alternative splicing factor interaction through yeast two-hybrid
A:8个剪接因子间相互作用关系 The interaction of 8 alternative splicing factors;B:StSC4-AD/BD与StSC6-AD/BD StSC4-AD/BD and StSC6-AD/BD; C:StSC3-AD/BD与StSC8-AD/BD StSC3-AD/BD and StSC8-AD/BD;D:StSC3-AD/BD与StSC4-AD/BD StSC3-AD/BD and StSC4-AD/BD; E:StSC8-AD/BD与StSC4-AD/BD StSC8-AD/BD and StSC4-AD/BD ○:未验证Not verified;√:互作Interacted;×:不互作Not interacted
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