| 黄角苔叶绿体rbcL基因编码区的序列分析 |
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| 引用本文： | 王艇,苏应娟.黄角苔叶绿体rbcL基因编码区的序列分析[J].中山大学学报(自然科学版),1999,38(1):70-73. |
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| 作者姓名： | 王艇 苏应娟 |
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| 作者单位： | 中山大学生命科学学院 |
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| 基金项目： | 国家自然科学基金,广东省自然科学基金 |
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| 摘 要： | 测定了黄角苔（Ｐｈａｅｏｃｅｒｏｓｌａｅｖｉｓ（Ｌ．）Ｐｒｏｓｋ）叶绿体ｒｂｃＬ基因编码区的１３９８个核苷酸序列，并且由此推导出对应的氨基酸序列．此基因中密码子的第２和第３位上Ａ／Ｔ所占的比例较高，分别为５３６％和７７５％．黄角苔ｒｂｃＬ基因的编码区与花旗松、菠菜、玉米和雷氏衣藻间在核苷酸序列上的同源性分别为８４０％，８１５％，７９３％和７６３％；在氨基酸序列上的同源性分别为９１．０％，８９．９％，８８．５％和８９．３％．为研究角苔植物的系统发育提供了核苷酸序列方面的资料．
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| 关 键 词： | 黄角苔，rbcL基因，编码区，序列分析 |
Sequence Analysis of the Coding Region in Chloroplast rbcL Gene from Phaeoceros laevis |
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| WANG Ting,SU Yingjuan,ZHU Jianming,ZHOU Qin.Sequence Analysis of the Coding Region in Chloroplast rbcL Gene from Phaeoceros laevis[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,1999,38(1):70-73. |
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| Authors: | WANG Ting SU Yingjuan ZHU Jianming ZHOU Qin |
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| Abstract: | nucmeotides of the coding region have been sequenced in the chloroplast rbcL gene from Phaeoceros laevis (L.) Prosk, and the corresponding amino acid sequence has also been deduced.The second and the third positions of the codons in the gene have a bias towards using adenine and thymine bases,the proportions of A and T in the two positions are 53.6% , 77.5% respectively.The nucleotide sequence homologies of P.laevis rbcL gene coding region with Pseudotsuga menziesii,Spinacia oleracea,Zea mays and Chlamydomonas reinhardii are 84.0%,81.5%,79.3% and 76.3%,respectively, while the deduced amino acid sequence homologies are 91.0%,89.9%,88.5% and 89.3%,respectively.This paper offers DNA sequence data for the study of hornwort phylogeny. |
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| Keywords: | Phaeoceros laevis (L ) Prosk rbcL gene the coding region sequence analysis |
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