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浙江大学学报(农业与生命科学版)  2011, Vol. 37 Issue (2): 133-141    DOI: 10.3785/j.issn.1008-9209.2011.02.003
生物科学与技术     
长柄链格孢AlCyP1基因的克隆及其在渗透胁迫适应中的作用
罗义勇1,2,祝明亮3,路则宝4,毕薇1,张克勤1,杨金奎1
1 . 云南大学生物资源保护与利用国家重点实验室培育基地 / 教育部微生物资源重点实验室 , 云南 昆明 650091 ;2. 昆明理工大学生物工程技术研究中心 , 云南 昆明 650224; 3. 云南省烟草科学研究所 , 云南 玉溪 653100 ;4. 楚雄医药高等专科学校 医学检验系 , 云南 楚雄 675005
Cloning of AlCyP1 gene from Alternaria longipes and its functions in adaptation to osmotic stress
LUO Yi -yong 1 , 2 , ZHU Ming- liang , LU Ze -bao , BI Wei , ZHANG Ke - qin , YANG Jin ‐ kui
1 .Laboratory for Conservation and Utilization of Bio‐Resources / Key Laboratory for Microbial Resources of the Ministry of Education ,Yunnan University ,Kunming 650091 ,China ;2 .Biotechnology Research Center ,Kunming University of Science and Technology ,Kunming 650224 , China ;3 .Yunnan Academy of Tobacco Science ,Yuxi , Yunnan 653100 ,China ;4 . Department of Clinical Inspection , Chuxiong Medical and Pharmaceutical College ,Chuxiong ,Yunnan 675005 ,China
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摘要: 为了阐明烟草赤星病 (tobacco brown-spot disease) 病原真菌长柄链格孢 ( Alternaria longipes )对二甲酰亚胺类杀菌剂抗性的分子机制 , 以不同抗性水平的长柄链格孢菌株为实验材料 , 通过基因钓鱼(GeneFishing) 技术进行基因差异表达分析 ; 并利用基因敲除技术对已克隆到的 AlCyP1 基因进行功能分析 . 结果表明 : 一个亲环蛋白基因 AlCyP1 的表达量在不同抗性水平的长柄链格孢中存在明显差异 ;应用 DNA 步移 (DNA walking) 方法克隆得到 AlCyP1 基因的 DNA 序列 , 其开放阅读框中存在2个翻译起始密码子 , 可以编码产生2种不同长度的多肽 , 长、短多肽产物分别具有222 和188个氨基酸 , 其中短多肽起始于长多肽的第35个密码子 ; 另外 , 氨基酸序列同源性分析发现 ,AlCyP1和其他真菌的亲环蛋白具有很高的同源性 , 达50.0%~61.3%; 利用基因敲除技术对 AlCyP1 基因进行功能分析发现 , 该基因通过表达水平的改变参与了长柄链格孢对渗透胁迫的适应调节过程 .
Abstract: In order to clarify the molecular mechanism of tobacco brown-spot disease pathogenic fungi Alternaria longipes resistance to dicarboximide fungicides( DCFs) ,GeneFishing technology was conducted to analyse gene differential expression among A . longipes strains with different DCFs-resistant level ,and thebiologicalfunctions of thecloned AlCyP1 genewereanalyzed by genedisruption .The results revealed that significant expression difference of a cyclophilin gene---AlCyP1 existed in different DCFs-resistant level strains .Using DNA walking method ,theDNA sequence of AlCyP1 gene was cloned .Two translation initiation codons existed within the open reading frame of AlCyP1 gene ,which coded two different length polypeptide products . The long and short polypeptide products contained 222 and 188 amino acids ,respectively ,in which the short one was initiated at codon 35 of the long polypeptide product . In addition ,the sequence homology analysis of amino acids showed AlCyP1 sharing high homology( 50.0%~61.3% ) withcyclophilins of other fungi .Finally ,biologicalfunctions of the AlCyP1 gene were analyzed by gene disruption ,and the results showed that AlCyP1 gene involved in A . longipes osmotic stress adaptation process dependent of its expression level change .
出版日期: 2011-03-25
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罗义勇
祝明亮
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引用本文:

罗义勇,祝明亮,路则宝,毕 薇,张克勤,杨金奎. 长柄链格孢AlCyP1基因的克隆及其在渗透胁迫适应中的作用[J]. 浙江大学学报(农业与生命科学版), 2011, 37(2): 133-141.

LUO Yi-yong,ZHU Ming-liang,LU Ze-bao,BI Wei,ZHANG Ke-qin,YANG Jin-kui. Cloning of AlCyP1 gene from Alternaria longipes and its functions in adaptation to osmotic stress. Journal of Zhejiang University: Agric. & Life Sci., 2011, 37(2): 133-141.

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http://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2011.02.003        http://www.zjujournals.com/agr/CN/Y2011/V37/I2/133

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