Detection of Polymyxa graminis in a barley crop in Australia

Thompson, J. P. and Clewett, T. G. and Jennings, R. E. and Sheedy, J. G. and Owen, K. J. and Persley, D. M. (2011) Detection of Polymyxa graminis in a barley crop in Australia. Australasian Plant Pathology, 40 (1). pp. 66-75. ISSN 0815-3191


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.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © Australasian Plant Pathology Society Inc. 2010. Published Version restricted in accordance with publisher copyright policy.
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 30 Apr 2014 08:50
Last Modified: 09 Feb 2017 05:08
Uncontrolled Keywords: Cystosori; Plasmodiophorales; Plasmodiophorid; Avena
Fields of Research : 06 Biological Sciences > 0605 Microbiology > 060506 Virology
05 Environmental Sciences > 0503 Soil Sciences > 050303 Soil Biology
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Socio-Economic Objective: D Environment > 96 Environment > 9604 Control of Pests, Diseases and Exotic Species > 960413 Control of Plant Pests, Diseases and Exotic Species in Farmland, Arable Cropland and Permanent Cropland Environments
B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820501 Barley
Identification Number or DOI: 10.1007/s13313-010-0015-9

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