Chlorella variabilis and Micractinium reisseri sp nov (Chlorellaceae, Trebouxiophyceae): Redescription of the endosymbiotic green algae of Paramecium bursaria (Peniculia, Oligohymenophorea) in the 120th year
Chlorella variabilis and Micractinium reisseri sp nov (Chlorellaceae, Trebouxiophyceae): Redescription of the endosymbiotic green algae of Paramecium bursaria (Peniculia, Oligohymenophorea) in the 120th year
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DOI：
10.1111/j.1440-1835.2010.00579.x
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发表时间：
2010-07-01
影响因子：
1.5
通讯作者：
Imamura, Nobutaka
中科院分区：
文献类型：
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作者：
Hoshina, Ryo;Iwataki, Mitsunori;Imamura, Nobutaka
P>纤毛虫草履虫 (Ehrenberg) Focker 的共生藻类是病毒学和分子进化生物学以及共生关系生物学领域的关键物种。 120年前，荷兰微生物学家Beijerinck曾将这些共生藻类鉴定为Zoolorella Conductrix Brandt。然而，几经周折，如今藻类已被视为无名生物。最近的分子分析揭示了几种不同的藻类伙伴，具体取决于P. bursaria菌株，但几乎所有P. bursaria都含有属于所谓“美国”或“欧洲”群体的共生体。这些藻类缺乏适当的名称开始在上述研究领域引起不良影响。在本研究中，我们证实了“美国”和“欧洲”群体的遗传自主性，并将共生体描述为 Chlorella variabilis Shihira et Krauss 和 Micractinium reisseri Hoshina, Iwataki et Imamura sp。分别为 11 月（小球藻科、Trebouxiophyceae）。
P>Symbiotic algae of the ciliate Paramecium bursaria (Ehrenberg) Focker are key species in the fields of virology and molecular evolutionary biology as well as in the biology of symbiotic relationships. These symbiotic algae were once identified as Zoochlorella conductrix Brandt by the Dutch microbiologist, Beijerinck 120 years ago. However, after many twists and turns, the algae are today treated as nameless organisms. Recent molecular analyses have revealed several different algal partners depending on P. bursaria strains, but nearly all P. bursaria contains a symbiont belonging to either the so-called 'American' or 'European' group. The absence of proper names for these algae is beginning to provoke ill effects in the above-mentioned study areas. In the present study, we confirmed the genetic autonomy of the 'American' and 'European' groups and described the symbionts as Chlorella variabilis Shihira et Krauss and Micractinium reisseri Hoshina, Iwataki et Imamura sp. nov., respectively (Chlorellaceae, Trebouxiophyceae).