期刊
PROTIST
卷 164, 期 2, 页码 195-205出版社
ELSEVIER GMBH
DOI: 10.1016/j.protis.2012.08.001
关键词
Aphelids; fungi; nuclear genetic code; phylogeny
类别
资金
- Russian Foundation for Basic Research [12-04-00154, 12-04-01486, 12-04-90903]
- Ministry of Education and Science of the Russian Federation (the program Scientific and scientific-pedagogical personnel of innovative Russia)
- Deutsche Forschungsgemeinschaft [GRK 1563]
- program Problems of life origin and biosphere development
Reconstructing the early evolution of fungi and metazoans, two of the kingdoms of multicellular eukaryotes thriving on earth, is a challenging task for biologists. Among extant organisms having characters intermediate between fungi and hypothetical protistan ancestors, from which both fungi and metazoans are believed to have evolved, aphelids are unfairly neglected. The phylogenetic position of these microalgal endoparasites remained uncertain, since no nucleotide sequence data have been reported to date. Aphelids resemble some primitive zoosporic fungi in life cycle, but, unlike fungi, they live by phagotrophy. Here we present a phylogeny, in which a cultured aphelid species, Amoeboaphelidium protococcarum, forms a monophyletic group with Rozella and microsporidia as a sister group to Fungi. We also report a non-canonical nuclear genetic code in A. protococcarum. (c) 2012 Elsevier GmbH. All rights reserved.
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