摘要
通过全基因组测序获得金银花MLO家族候选基因25个。生物信息学分析发现,该家族蛋白氨基酸数量为137~846,理论等电点在5.02~9.50之间,富含碱性氨基酸,有1个蛋白不含跨膜结构域,其他蛋白为3~10个。亚细胞定位预测结果显示,有21个蛋白定位于细胞膜上,1个定位于叶绿体。通过对金银花、小麦、拟南芥、番茄、普通烟草、林烟草和绒毛状烟草等物种的133个MLO蛋白构建系统发育树,显示金银花MLO家族蛋白可分为5个亚组。组织特异性分析发现,金银花MLO家族基因的表达具有明显的组织特异性。其中8个基因在叶中高表达,2个基因在茎中高表达,2个基因在花中高表达。接种白粉菌后,有4个基因显著上调表达,其中MLO14增加最多,比对照提高了2000多倍。本研究初步解析了金银花白粉病发生相关基因MLO的组成及表达情况,为进一步利用MLO作为靶基因,培育金银花抗白粉病新种质奠定了基础。
Twenty-five candidate MLO genes of Lonicera japonica were obtained by whole genome sequencing.Bioinformatics analysis showed that the number of amino acids in the protein family ranged from 137 to 846,the theoretical isoelectric point ranged from 5.02 to 9.50,and it was rich in basic amino acids.One protein did not contain transmembrane domain,and the other proteins ranged from 3 to 10.The results of subcellular localization showed that 21 proteins were located on the cell membrane and 1 protein was located on the chloroplast.Phylogenetic trees were constructed from 133 MLO proteins of Lonicera japonica,Triticum aestivum,Arabidopsis thaliana,Solanum lycopersicum,Nicotiana tabacum,Nicotiana sylvestris and Nicotiana tomentosiformis.The results indicated that MLO family proteins of Lonicera japonica could be divided into five subgroups.Tissue specific analysis showed that the expression of MLO genes in Lonicera japonica had obvious tissue specificity.Among them,8 genes were highly expressed in leaves,2 genes in stems and 2 genes in flowers.Four genes were significantly upregulated after inoculation with powdery mildew,among which MLO14 increased the most,which was more than 2000 times higher than that of the control.In this study,the composition and expression of the MLO gene related to the occurrence of powdery mildew of Lonicera japonica were preliminarily analyzed,which laid a foundation for the further use of MLO as a target gene to develop new germplasm resistant to powdery mildew of Lonicera japonica.
作者
李小丽
魏丽
刘谦
李佳
张芳
张永清
蒲高斌
LI Xiao-li;WEI Li;LIU Qian;LI Jia;ZHANG Fang;ZHANG Yong-qing;PU Gao-bin(Shandong University of Traditional Chinese Medicine,Jinan 250355,China;Shandong Provincial Collaborative Innovation Center for Quality Control and Construction of the Whole Industrial Chain of Traditional Chinese Medicine,Jinan 250355,China;Shandong Yingcai University,Jinan 250100,China)
出处
《药学学报》
CAS
CSCD
北大核心
2021年第10期2867-2875,共9页
Acta Pharmaceutica Sinica
基金
国家自然科学基金资助项目(81872963)
中央本级重大增减支项目“名贵中药资源可持续利用能力建设”(2060302)
山东省高等学校优秀青年创新团队支持计划(2019 KJE004)
山东省重大科技创新工程(2019JZZY011020)。
关键词
金银花
MLO蛋白
白粉病
生物信息学
表达模式
Lonicera japonica
MLO protein
powdery mildew
bioinformatics
expression pattern
