Study of molecular karyotypes in Amoeboaphelidium protococcarum, the endotrophic parasite of chlorophycean alga Scenedesmus

被引:22
作者
Pinevich, A
Gromov, B
Mamkaeva, K
Nasonova, E
机构
[1] St. Petersburg University, Institute of Biology, St. Petersburg, 2 Oranienbaum Chaussee, Old Peterhof
关键词
D O I
10.1007/s002849900155
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
On the basis of the pulsed field gel electrophoresis (PFGE) technique, molecular karyotypes in Amoeboaphelidium protococcarum (the endotrophic parasite of chlorophycean algae, which combines protozoon- and fungus-type characters) were determined. Molecular karyotypes in the strains X1, X5, and X31, which differ in the host range and originate from Western, Central, and Eastern Euro-Asia respectively, demonstrate the intrageneric polymorphism-from 7 to 13 chDNA bands-with the estimated molecular size of 0.3-2.2 Mb were resolved, and the genome size was determined to be between 7.4 and 10.2 Mb. The molecular karyotype pattern in A. protococcarum is different from that in Protozoa. The low-grade distinction in molecular karyotypes between X1 and X5, on one hand, and high-grade distinction between X1/X5 and X31, on the other hand, makes it possible to place X31 in a separate taxon.
引用
收藏
页码:122 / 126
页数:5
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