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J Gen Virol. 2011 Nov;92(Pt 11):2674-2678. doi: 10.1099/vir.0.034702-0. Epub 2011 Jul 20.

The remarkable evolutionary history of endornaviruses.

Author information

1
The Samuel Roberts Noble Foundation, Plant Biology Division, Ardmore, OK 73402, USA.
2
Department of Biochemistry, Molecular Biology, Entomology and Plant Pathology, Mississippi State University, Mississippi State, MS 39762, USA.
3
Laboratory of Molecular and Cellular Biology, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan.
4
Department of Plant Pathology and Crop Physiology, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA.

Abstract

The family Endornaviridae contains several members from diverse hosts, including plants, fungi and oomycetes. They are found as large dsRNA elements with a nick in the coding strand. All members encode a conserved RNA-dependent RNA polymerase, but no other domain that is conserved among all members. Based on the conserved domain database comparison the various domains have different origins, indicating a highly modular evolutionary history. In some cases, domains with similar putative functions are found that are derived from different protein families, indicating convergent evolution for a required function.

PMID:
21775577
DOI:
10.1099/vir.0.034702-0
[Indexed for MEDLINE]

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