Ribosomal DNA analyses reveal greater sequence variation in Polymyxa species than previously thought and indicate the possibility of new ribotype-host-virus associations.

Abstract excerpt

Polymyxa species transmit viruses to many important crops. They are poorly understood obligate parasites occupying a distinct position in the Tree of Life. To better understand the potential for spread of Polymyxa-vectored diseases, ribosomal DNA was analysed from isolates covering a wide range of geographical locations, virus associations and hosts. Internal transcribed spacer 2 structure analysis indicated that...

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