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First report of Pythiogeton ramosum (Pythiales) in Australia

Le, DuyPhu and Smith, Mike and Aitken, Elizabeth (2014) First report of Pythiogeton ramosum (Pythiales) in Australia. Australasian Plant Disease Notes, 9 (1). pp. 1-3.

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Article Link(s): http://dx.doi.org/10.1007/s13314-014-0130-5

Abstract

In 2012, a project was initiated to assess if the soft rot disease of ginger in Australian fields was associated with pathogens other than Pythium myriotylum. Together with nine Pythium spp., ten isolates of a Pythium-like organism were also recovered from ginger with soft rot symptoms. These Pythium-like isolates were identified as Pythiogeton (Py.) ramosum based on its morphology and ITS sequences. In-vitro pathogenicity tests allowed confirmation of pathogenicity of Py. ramosum on excised carrot (Daucus carota), sweet potato (Ipomoea batatas) and potato (Solanum tubersum) tubers, although it was not pathogenic on excised ginger (Zingiber officinale) and radish (Raphanus sativus) rhizome/roots. In addition it was found to be pathogenic on bean (Phaseolus vulgaris), capsicum (Capsicum annuum) and cauliflower (Brassica oleracea var. botrytis) seedlings. This is the first record of Py. ramosum and its pathogenicity in Australia.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:Australasian Plant Dis. Notes
Keywords:Ginger rhizome Zingiber officinale Pythium soft rot
Subjects:Science > Botany > Genetics
Science > Botany > Plant physiology
Deposited On:19 Aug 2014 06:07
Last Modified:19 Aug 2014 06:07

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