Comparison of host range and pathogenicity of isolates of Pythium myriotylum and Pythium zingiberis

Le, D. P., Aitken, E. A. B. and Smith, M. K. (2015). Comparison of host range and pathogenicity of isolates of Pythium myriotylum and Pythium zingiberis. In: W. Roberts, R. Ikin, S. McMaugh, C. Hale and D. Hunter, XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Innovative Plant Protection in Horticulture, Biosecurity, Quarantine Pests, and Market Access. International Horticulture Congress, Brisbane, QLD, Australia, (47-54). 17-22 August 2014. doi:10.17660/ActaHortic.2015.1105.7


Author Le, D. P.
Aitken, E. A. B.
Smith, M. K.
Title of paper Comparison of host range and pathogenicity of isolates of Pythium myriotylum and Pythium zingiberis
Formatted title
Comparison of host range and pathogenicity of isolates of Pythium myriotylum and Pythium zingiberis
Conference name International Horticulture Congress
Conference location Brisbane, QLD, Australia
Conference dates 17-22 August 2014
Proceedings title XXIX International Horticultural Congress on Horticulture: Sustaining Lives, Livelihoods and Landscapes (IHC2014): International Symposia on Innovative Plant Protection in Horticulture, Biosecurity, Quarantine Pests, and Market Access   Check publisher's open access policy
Journal name Acta Horticulturae   Check publisher's open access policy
Place of Publication Leuven, Belgium
Publisher International Society for Horticultural Science
Publication Year 2015
Sub-type Fully published paper
DOI 10.17660/ActaHortic.2015.1105.7
Open Access Status Not Open Access
ISBN 9789462610996
ISSN 0567-7572
2406-6168
Editor W. Roberts
R. Ikin
S. McMaugh
C. Hale
D. Hunter
Volume 1105
Issue 7
Start page 47
End page 54
Total pages 8
Collection year 2016
Language eng
Formatted Abstract/Summary
Apart from morphology and genetic characteristics, species status of Pythium zingiberis and P. myriotylum may also be confirmed based on their pathogenicity and host range. An Australian putative P. zingiberis isolate and imported type isolates of P. myriotylum and P. zingiberis were subject to both in vitro and in vivo pathogenicity tests. In vitro tests were carried out on excised carrot, ginger, potato, radish, and sweet potato tuber/root sections, and on seeds and seedlings of cucumber, cauliflower, millet, rye, sweet corn, tomato, and wheat. In all assays conducted, the Australian isolate was found to be the most pathogenic, followed by type specimen of P. zingiberis (UOP 275), and then the type specimen P. myriotylum (CBS 254.70). An in vivo experiment on ginger plants at 35°C (with 10 h day light) in quarantine conditions showed that the ginger plants inoculated with the Australian isolate and also the type specimen of P. zingiberis died at 21 days after inoculation, whereas those inoculated with P. myriotylum CBS 254.70 were still green and healthy. Along with cardinal growth rate, the Australian isolate was confirmed to be closely related to P. zingiberis. This is also the first direct comparison in pathogenicity of P. zingiberis and P. myriotylum.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Agriculture and Food Sciences
Official 2016 Collection
 
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Created: Wed, 24 Feb 2016, 09:48:47 EST by Dr Elizabeth Aitken on behalf of School of Agriculture and Food Sciences