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Cloning and Analysis of ISA1 from Oryza sativa 被引量:2

水稻ISA1基因的克隆与分析(英文)
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摘要 [Objective] The aim was to clone ISA1 from Oryza sativa and analyze its expression situation in different tissues and different endosperm filling stage.[Method] With japonica rice cultivar nipponbare as test material,the expression patterns of ISA1 in different tissues and different endosperm filling stage was analyzed by using semi-quantitative RT-PCR technique.[Result]The full length open reading fragments of ISA1 encoded 811 amino acid residues.The homologous alignment and phylogenetic analysis showed th... [目的]克隆水稻ISA1基因,分析ISA1基因在不同组织和不同灌浆期胚乳中的表达情况。[方法]以粳稻品种日本晴为试验材料,胚乳总RNA提取参照Bioteke公司植物多糖多酚总RNA提取试剂盒说明书,用琼脂糖凝胶和Nano-drop检测RNA纯度和浓度。完整性和纯度较好的RNA样品逆转录合成cDNA第1链。根据已发表的水稻ISA1基因序列设计引物IsoaF1和IsoaR1,用于扩增包含全长ORF在内的ISA1cDNA序列。利用TakaraLAPCR试剂在25μl的体系中进行PCR反应。目标片段经切胶回收后连接到pGEM-Teasy载体,转化后进行测序鉴定。利用DNAstar进行序列分析和同源性比对,基因结构与染色体定位分析采用Gramene数据库,核酸和蛋白质序列BLAST检索采用NCBI数据库。利用ClustalW比对和NJ方法在MEGA4中构建系统进化树。利用半定量RT-PCR分析ISA1基因在水稻不同组织(叶、根、茎和胚乳)以及在不同灌浆期胚乳(灌浆3~24d)中的表达情况。[结果]水稻淀粉去分支酶1cDNA序列ORF编码811个氨基酸残基ISA1基因位于第8号染色体,由18个外显子组成;同源性比较和系统进化树分析表明,水稻ISA1基因与其他物种已发表的ISA1基因核苷酸序列和推导的氨基酸序列的同源性分别在66.8%~83.0%和69.0%~82.5%,且与大麦、小麦等物种亲缘关系最近;半定量RT-PCR分析表明,ISA1基因在叶、根、茎中不表达,在灌浆期12d胚乳中的表达量最大。[结论]该研究结果为进一步研究ISA1基因的表达和调控机制奠定了基础。
出处 《Agricultural Science & Technology》 CAS 2010年第2期84-86,共3页 农业科学与技术(英文版)
基金 Supported by Zhejiang Provincial Natural Science Foundation(Y3090617 and Y304463)~~
关键词 Oryza sativa ISA1 Gene cloning Semi-quantitative RT-PCR 水稻 ISA1 基因克隆 半定量RT-PCR
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参考文献8

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