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Detection of Polymyxa graminis in a barley crop in Australia.

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Thompson, J.P., Clewett, T.G., Jennings, R.E., Sheedy, J.G., Owen, K.J. and Persely, D.M. (2011) Detection of Polymyxa graminis in a barley crop in Australia. Australasian Plant Pathology, 40 (1). pp. 66-75.

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Article Link: http://dx.doi.org/10.1007/s13313-010-0015-9

Publisher URL: http://www.springerlink.com


Polymyxa graminis was detected in the roots of barley plants from a field near Wondai, Queensland, in 2009. P. graminis was identified by characteristic sporosori in roots stained with trypan blue. The presence of P. graminis f. sp. tepida (which is hosted by wheat and oats as well as barley) in the roots was confirmed by specific PCR tests based on nuclear ribosomal DNA. P. graminis is the vector of several damaging soil-borne virus diseases of cereals in the genera Furovirus, Bymovirus and Pecluvirus. No virus particles were detected in sap extracts from leaves of stunted barley plants with leaf chlorosis and increased tillering. Further work is required to determine the distribution of P. graminis in Australian grain crops and the potential for establishment and spread of the exotic soil-borne viruses that it vectors.

Item Type:Article
Corporate Creators:Department of Employment, Economic Development and Innovation (DEEDI), Agri-Science, Crop and Food Science
Business groups:Crop and Food Science
Additional Information:© Australasian Plant Pathology Society Inc.
Keywords:Barley; cereals; chlorosis; DNA; extracts; grain crops; leaves; oats; plant extracts; plant pathogens; plant viruses; polymerase chain reaction; ribosomal DNA; roots; sap; soil borne viruses; tillering; vectors; viral diseases; viruses; wheat; Queensland; Australia.
Subjects:Science > Science (General)
Plant pests and diseases > Individual or types of plants or trees > Barley
Plant pests and diseases > Weeds, parasitic plants etc
Live Archive:15 Apr 2011 02:31
Last Modified:03 Sep 2021 16:43

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