Survival of conidia of sorghum ergot (caused by ) on panicles, seed and soil in Australia

Macroconidia of the sorghum ergot pathogen, Claviceps africana Frederickson, Mantle & de Milliano, survived in dried honeydew on soil for 13-14 weeks in a glasshouse at ambient temperatures, but for less than half that time on seed stored in a shadehouse over summer. Those on seeds stored at 4°C...

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Bibliographic Details
Published in:Australasian plant pathology 2002-01, Vol.31 (2), p.137-141
Main Authors: Bhuiyan, S. A., Galea, V. J., Ryley, M. J., Tay, D., Lisle, A. T.
Format: Article
Language:English
Subjects:
Claviceps africana
Sorghum
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Summary:Macroconidia of the sorghum ergot pathogen, Claviceps africana Frederickson, Mantle & de Milliano, survived in dried honeydew on soil for 13-14 weeks in a glasshouse at ambient temperatures, but for less than half that time on seed stored in a shadehouse over summer. Those on seeds stored at 4°C, however, survived for over a year (58-62 weeks). During summer, conidia on ergot-infected panicles buried in soil, or on the soil surface, survived for 7.5-12 weeks, whereas over winter the survival times were 4 weeks and 19-27 weeks, respectively. Macroconidia on infected panicles held above the soil surface survived for >38 weeks (8 calendar months) over winter, suggesting that they may play a role in the perennation of C. africana in Australia. Australasian Plant Pathology 31(2) 137 - 141 Full text doi:10.1071/AP01077 © CSIRO 2002
ISSN:0815-3191
1448-6032
DOI:10.1071/AP01077