| ANALYSIS OF EVOLUTIONARY RELATIONSHIP BETWEEN ASTASIA LONGA AND EUGLENA GRACILIS BY USING RAPD TECHNIQUE AND CLADISTIC ANALYSIS |
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| 作者姓名： | 王江新 施之新 甘小妮 谢树莲 |
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| 作者单位： | Institute of Hydrobiology，Chinese Academy of Sciences，Wuhan 430072，China |
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| 基金项目： | Project3 9570 0 63supportedbyNSFCandalsobySpecialFundofCAS. |
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| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＡｓｔａｓｉａａｎｄＥｕｇｌｅｎａ,ｂｏｔｈｂｅｌｏｎｇｉｎｇｔｏＥｕｇｌｅｎａｐｈｙｔａ,ｗｅｒｅｆｉｒｓｔｃｌａｓｓｉｆｉｅｄｂｙＫｌｅｂｓ(1883)ｉｎｔｏｄｉｆｆｅｒｅｎｔｆａｍｉｌｉｅｓａｃｃｏｒｄｉｎｇｔｏｔｈｅｉｒｍｏｄｅｏｆｎｕｔｒｉｔｉｏｎ(ＡｓｔａｓｉａｉｓｓａｐｒｏｐｈｙｔｉｃａｎｄＥｕｇｌｅｎａｉｓｐｈｏｔｏｔｒｏｐｈｉｃ).Ｂｕｔｗｉｔｈｄｅｅｐｅｒｒｅｓｅａｒｃｈｅｓｏｎｉｔｓｍｏｒｐｈｏｃｙｔｏｌｏｇｙ,Ａｓｔａｓｉａｗａｓｆｏｕｎｄｔｏｂｅｖｅｒｙｓ…
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ANALYSIS OF EVOLUTIONARY RELATIONSHIP BETWEEN ASTASIA LONGA AND EUGLENA GRACILIS BY USING RAPD TECHNIQUE AND CLADISTIC ANALYSIS |
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| WANG Jiang xin,SHI Zhi xin GAN Xiao ni,XIE Shu lian.ANALYSIS OF EVOLUTIONARY RELATIONSHIP BETWEEN ASTASIA LONGA AND EUGLENA GRACILIS BY USING RAPD TECHNIQUE AND CLADISTIC ANALYSIS[J].Chinese Journal of Oceanology and Limnology,2001(1). |
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| Authors: | WANG Jiang xin SHI Zhi xin GAN Xiao ni XIE Shu lian |
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| Abstract: | Although both Astasia longa and Euglena gracilis belong to different genera, they share many morphological characters except that A. longa has no chloroplast. In the 1940's, on the basis of the finding that in darkness or upon addition of some chemicals, E. gracilis would fade reversibly or irreversibly, some scholars hypothesised that A. longa evolved from E. gracilis by losing chloroplast. The authors' use of RAPD and cladistic analyses in a study on the evolutionary relationship between A .longa and E. gracilis showed that the A. longa 's relationship with E. gracilis was closer than that with other green euglenoids. This proves the hypothesis that A. longa evolved from E. gracilis is reasonable. The results of this study suggest that saprophytic colorless euglenoids were transformed from green euglenoids by losing their choroplasts. |
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| Keywords: | A longa Euglena gracilis cladistic analysis molecular evolution RAPD |
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