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Susceptibility of opium poppy and pyrethrum to root infection by Spongospora subterranea


Clark, TJ and Rockliff, LA and Tegg, RS and Balendres, MA and Amponsah, J and Thangavel, T and Mulcahy, F and Wilson, AJ and Wilson, CR, Susceptibility of opium poppy and pyrethrum to root infection by Spongospora subterranea, Journal of Phytopathology, 166, (10) pp. 694-700. ISSN 0931-1785 (2018) [Refereed Article]

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© 2018 Blackwell Verlag GmbH

DOI: doi:10.1111/jph.12746


Spongospora subterranea, which causes powdery scab of potato, infects a diverse range of plant species. Crop rotation as a powdery scab management tool will be compromised if pathogen hosts exist between potato crops. Opium poppy (Papaver somniferum) and pyrethrum (Tanacetum cinerariifolium) are important crops within intensive vegetable production rotations in NW Tasmania. Measurements of S. subterranea soil inoculum within a commercial field showed pathogen amounts were substantially elevated following an opium poppy crop, which suggested host status. In glasshouse testing, opium poppy and pyrethrum were confirmed as hosts of S. subterranea, with opium poppy the more susceptible of the two. Both species were less susceptible than tomato, a known host. Observations of early growth suggested inoculation impacts on all three plant species, although at 16 (tomato and opium poppy) or 26 (pyrethrum) weeks postinoculation, only tomato had significantly reduced shoot and root development. The role of rotation crops in inoculum persistence and the possible role of S. subterranea as a minor pathogen of nonpotato crops are discussed.

Item Details

Item Type:Refereed Article
Keywords:Papaver somniferum, qPCR analysis, root galling, Tanacetum cinerariifolium, Spongospora, soilborne pathogen, alternate hosts, potato, zoosporangium, root infection
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant pathology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Field grown vegetable crops
UTAS Author:Clark, TJ (Miss Tamara Clark)
UTAS Author:Rockliff, LA (Mr Luke Rockliff)
UTAS Author:Tegg, RS (Dr Robert Tegg)
UTAS Author:Balendres, MA (Mr Mark Balendres)
UTAS Author:Amponsah, J (Mr Jonathan Amponsah)
UTAS Author:Thangavel, T (Dr Tamil Thangavel)
UTAS Author:Wilson, AJ (Mrs Annabel Wilson)
UTAS Author:Wilson, CR (Professor Calum Wilson)
ID Code:128972
Year Published:2018
Web of Science® Times Cited:1
Deposited By:TIA - Research Institute
Deposited On:2018-10-30
Last Modified:2019-03-20

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