Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana

Article

Bhuiyan, S. A., Ryley, M. J., Galea, V. J., Tay, D. and Lisle, A. T.. 2009. "Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana ." Australasian Plant Pathology. 38 (5), pp. 496-499. https://doi.org/10.1071/AP09032
Article Title

Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana

ERA Journal ID2559
Article CategoryArticle
AuthorsBhuiyan, S. A. (Author), Ryley, M. J. (Author), Galea, V. J. (Author), Tay, D. (Author) and Lisle, A. T. (Author)
Journal TitleAustralasian Plant Pathology
Journal Citation38 (5), pp. 496-499
Number of Pages4
Year2009
PublisherSpringer
Place of PublicationDordrecht, Netherlands
ISSN0815-3191
1448-6032
Digital Object Identifier (DOI)https://doi.org/10.1071/AP09032
Abstract

The effect of conidial concentration and length of stigma wetness period on infection of sorghum spikelets by
Claviceps africana was studied in a controlled environment experiment. A spore concentration of at least 106 conidia/mL was required for maximum infection on sorghum panicles. Maximum infection occurred during a stigma wetness period between 4.5 and 6 h. Approximately 11–15% infection occurred when stigmas had been dried immediately after inoculation.
This study demonstrated that the stigma wetness is an important parameter in sorghum ergot epidemiology.

Keywordsbacteria; microorganisms; Claviceps africana
ANZSRC Field of Research 2020319999. Other biological sciences not elsewhere classified
310701. Bacteriology
300409. Crop and pasture protection (incl. pests, diseases and weeds)
Public Notes

© Australasian Plant Pathology Society 2009. Published version deposited in accordance with the copyright policy of the publisher.

Byline AffiliationsBSES Limited, Australia
Department of Primary Industries and Fisheries, Queensland
University of Queensland
Ohio State University, United States
Institution of OriginUniversity of Southern Queensland
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