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The Structure of Maize Streak Virus: Are Two Heads Better Than One?

Published online by Cambridge University Press:  02 July 2020

W. Zhang ,
N. H. Olson ,
P. R. Chipman ,
R. McKenna  and
T. S. Baker
W. Zhang
Affiliation:
Department of Biological Sciences, Purdue University, West Lafayette, IN. 47907
N. H. Olson
Affiliation:
Department of Biological Sciences, Purdue University, West Lafayette, IN. 47907
P. R. Chipman
Affiliation:
Department of Biological Sciences, Purdue University, West Lafayette, IN. 47907 Present Address: National Centre for Foreign Animal Disease, Suite T2300, 1015 Arlington St., Winnipeg, Manitoba, R3E 3M4Canada
R. McKenna
Affiliation:
Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK
T. S. Baker
Affiliation:
Department of Biological Sciences, Purdue University, West Lafayette, IN. 47907
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Extract

The geminiviruses are a group of plant DNA viruses characterized by having one or two copies of a single-stranded, circular DNA genome and frequent occurrence of geminate, quasi-isometric particles as observed by transmission electron microscopy. The Geminiviridaefamily is classified into three genera (Mastrevirus, Curtovirus and Begomovirus)based on the number of DNA components, the plant hosts, and the transmission vectors. Maize streak virus (MSV), the type member of the Mastrivirusgenus, is transmitted by the leafhopper and infects Gramineaespecies. Wheat dwarf virus, Digitaria streak virus, and Chloris striate mosaic virus (CSMV) are examples of other members of the Mastrivirusgenus. The Nigerian strain of MSV (MSV-N) contains one copy of a singlestranded, circular DNA molecule (2687 nucleotides). Two protein products, VI and V2, are coded by the MSV-N genome.2 V2 (244 amino acids) is the only coat protein found in virions.

Type
Microbiology
Information
Microscopy and Microanalysis , Volume 5 , Issue S2: Proceedings: Microscopy & Microanalysis '99, Microscopy Society of America 57th Annual Meeting, Microbeam Analysis Society 33rd Annual Meeting, Portland, Oregon August 1-5, 1999 , August 1999 , pp. 1132 - 1133
Copyright
Copyright © Microscopy Society of America

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References

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7. We thank R. W. Ashmore for help with programing, and Yizhi Tao and Lixin Zhu for valuable discussions. Work supported in part by NIH grant ROl GM33050 and NSF shared equipment grant BIR9112921toT.S.B..Google Scholar