Sorghum ergot can develop without local Claviceps africana inoculum from nearby infected plants

Article


Chakraborty, S. and Ryley, M. J.. 2008. "Sorghum ergot can develop without local Claviceps africana inoculum from nearby infected plants." Plant Pathology. 57 (3), pp. 484-492. https://doi.org/10.1111/j.1365-3059.2008.01832.x
Article Title

Sorghum ergot can develop without local Claviceps africana inoculum from nearby infected plants

ERA Journal ID2652
Article CategoryArticle
AuthorsChakraborty, S. (Author) and Ryley, M. J. (Author)
Journal TitlePlant Pathology
Journal Citation57 (3), pp. 484-492
Number of Pages9
Year2008
PublisherJohn Wiley & Sons
Place of PublicationChichester, West Sussex. United Kingdom
ISSN0032-0862
1365-3059
Digital Object Identifier (DOI)https://doi.org/10.1111/j.1365-3059.2008.01832.x
Web Address (URL)http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3059.2008.01832.x/pdf
Abstract

Batches of glasshouse-grown flowering sorghum plants were placed in circular plots for 24hr at two field sites in southeast Queensland, Australia on 38 occasions in 2003 and 2004, to trap aerial inoculum of Claviceps africana. Plants were located 20-200m from the centre of the plots. Batches of sorghum plants with secondary conidia of C. africana on inoculated spikelets were placed at the centre of each plot on some dates as a local point source of inoculum. Plants exposed to field inoculum were returned to a glasshouse, incubated at near-100% relative humidity for 48hr and then at ambient relative humidity for another week before counting infected spikelets to estimate pathogen dispersal. Three times as many spikelets became infected when inoculum was present within 200m of trap plants, but infected spikelets did not decline with increasing distance from local source within the 200m. Spikelets also became infected on all 10 dates when plants were exposed without a local source of infected plants, indicating that infection can occur from conidia surviving in the atmosphere. In 2005, when trap plants were placed at 14 locations along a 280km route, infected spikelets diminished with increasing distance from sorghum paddocks and infection was sporadic for distances over 1km. Multiple regression analysis showed significant influence of moisture related weather variables on inoculum dispersal. Results suggest that sanitation measures can help reduce ergot severity at the local level, but sustainable management will require better understanding of long-distance dispersal of C. africana inoculum.

Keywordsaerial spore dispersal; long-distance spore dispersal; secondary conidia; sorghum bicolor
ANZSRC Field of Research 2020310705. Mycology
300409. Crop and pasture protection (incl. pests, diseases and weeds)
310804. Plant developmental and reproductive biology
Public Notes

© 2008 CSIRO. Published version deposited in accordance with the copyright policy of the publisher.

Byline AffiliationsCommonwealth Scientific and Industrial Research Organisation (CSIRO), Australia
Department of Primary Industries and Fisheries, Queensland
Institution of OriginUniversity of Southern Queensland
Permalink -

https://research.usq.edu.au/item/q26wx/sorghum-ergot-can-develop-without-local-claviceps-africana-inoculum-from-nearby-infected-plants

  • 1655
    total views
  • 6
    total downloads
  • 1
    views this month
  • 0
    downloads this month

Export as

Related outputs

Stem rust of wheat in colonial Australia and the development of the plant pathology profession
Ryley, Malcolm J. and Park, Robert F.. 2024. "Stem rust of wheat in colonial Australia and the development of the plant pathology profession." Historical Records of Australian Science. 35 (2), pp. 83-97. https://doi.org/10.1071/HR23005
A prickly business-Edward Shelton, Henry Tryon and the mysterious pineapple disease
Ryley, Malcolm J. and Drenth, Andre. 2024. "A prickly business-Edward Shelton, Henry Tryon and the mysterious pineapple disease." Historical Records of Australian Science. 35 (2), pp. 130-141. https://doi.org/10.1071/HR23008
The discovery of gumming disease of sugarcane in Australia
Ryley, Malcolm J.. 2024. "The discovery of gumming disease of sugarcane in Australia." Historical Records of Australian Science. 35 (2), pp. 151-157. https://doi.org/10.1071/HR23011
Henry Tryon-the true discoverer of the potato brown rot pathogen, Ralstonia solanacearum
Ryley, Malcolm J.. 2024. "Henry Tryon-the true discoverer of the potato brown rot pathogen, Ralstonia solanacearum." Historical Records of Australian Science. 35 (2), pp. 142-150. https://doi.org/10.1071/HR23007
Common leaf spot of lucerne and the dawn of mycology and plant pathology in Australia
Ryley, Malcolm J.. 2024. "Common leaf spot of lucerne and the dawn of mycology and plant pathology in Australia." Historical Records of Australian Science. 35 (2), pp. 105-115. https://doi.org/10.1071/HR23010
More than meets the eye — unexpected diversity in downy mildews (Oomycetes) on grasses in Australia
Ryley, M. J., Tan, Y. P., Kruse, J., Thines, M. and Shivas, R. G.. 2022. "More than meets the eye — unexpected diversity in downy mildews (Oomycetes) on grasses in Australia." Mycological Progress: international journal of fungal sciences. 21 (1), pp. 297-310. https://doi.org/10.1007/s11557-021-01750-4
First Reports of Diaporthe kongii, D. masirevicii, and D. ueckerae Associated with Stem and Peg Dieback on Peanut in Australia
Thompson, S. M., Grams, R. A., Neate, S. M., Shivas, R.G., Ryley, M. J, Tan, Y. P., Aitken, E. A. B., Wright, G. C and O’Connor, D. J.. 2018. "First Reports of Diaporthe kongii, D. masirevicii, and D. ueckerae Associated with Stem and Peg Dieback on Peanut in Australia." Plant Disease: an international journal of applied plant pathology. 102 (7), p. 1459. https://doi.org/10.1094/PDIS-12-17-1930-PDN
Fusarium thapsinum is the dominant species associated with sorghum stalk rot in Queensland and northern New South Wales
Kelly, L., Tan, Y. P., Ryley, M. and Aitken, E.. 2011. "Fusarium thapsinum is the dominant species associated with sorghum stalk rot in Queensland and northern New South Wales." Tran-Nguyen, Lucy (ed.) 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011): New Frontiers in Plant Pathology for Asia and Oceania. Darwin, Australia 26 - 29 Apr 2011 Toowoomba, Australia.
Management of the major foliar diseases of mungbeans and peanuts in Australia
Ryley, M. J. and Tatnell, J. R.. 2011. "Management of the major foliar diseases of mungbeans and peanuts in Australia." Tran-Nguyen, Lucy (ed.) 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011): New Frontiers in Plant Pathology for Asia and Oceania. Darwin, Australia 26 - 29 Apr 2011 Toowoomba, Australia.
Phylogenetic relationships of graminicolous downy mildews based on cox2 sequence data
Thines, Marco, Goker, Markus, Telle, Sabine, Ryley, Malcolm, Mathur, Kusum, Narayana, Yaladabagi D., Spring, Otmar and Thakur, Ram P.. 2008. "Phylogenetic relationships of graminicolous downy mildews based on cox2 sequence data." Mycological Research. 112 (3), pp. 345-351. https://doi.org/10.1016/j.mycres.2007.10.010
Patterns of release of the secondary conidia of Claviceps africana, the sorghum ergot pathogen in Australia
Ryley, M. J. and Chakraborty, S.. 2008. "Patterns of release of the secondary conidia of Claviceps africana, the sorghum ergot pathogen in Australia." Plant Pathology. 57 (3), pp. 473-483. https://doi.org/10.1111/j.1365-3059.2007.01819.x
Reduced fungicide use on a new Australian peanut cultivar, highly resistant to the late leaf spot and rust pathogens
Kelly, Lisa A., Ryley, Malcolm J., Trevorrow, Peter R., Tatnell, Jeffrey R., Nastasi, Charles and Chauhan, Yash. 2012. "Reduced fungicide use on a new Australian peanut cultivar, highly resistant to the late leaf spot and rust pathogens." Australasian Plant Pathology. 41 (4), pp. 359-373. https://doi.org/10.1007/s13313-012-0132-8
Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia
Obanor, F., Neate, S., Simpfendorfer, S., Sabburg, R., Wilson, P. and Chakraborty, S.. 2013. "Fusarium graminearum and Fusarium pseudograminearum caused the 2010 head blight epidemics in Australia ." Plant Pathology. 62 (1), pp. 79-91. https://doi.org/10.1111/j.1365-3059.2012.02615.x
Optimal environmental conditions for the infection and development of Puccinia purpurea on sorghum
White, J. A., Ryley, M. J., George, D. L. and Kong, G. A.. 2014. "Optimal environmental conditions for the infection and development of Puccinia purpurea on sorghum." Australasian Plant Pathology. 43 (4), pp. 447-457. https://doi.org/10.1007/s13313-014-0292-9
A novel technique for the early assessment of sorghum lines for resistance to Fusarium stalk rot
White, Jodie, Ryley, Malcolm and Kelly, Lisa. 2013. "A novel technique for the early assessment of sorghum lines for resistance to Fusarium stalk rot." Summer Grains Conference (ASGC 2013): Innovate, Grow, Prosper. Gold Coast, Australia 17 - 19 Jun 2013
Disease threats to the Australian soybean industry
Ryley, Malcolm. 2013. "Disease threats to the Australian soybean industry." Summer Grains Conference (ASGC 2013): Innovate, Grow, Prosper. Gold Coast, Australia 17 - 19 Jun 2013
Iterative germination and innovative techniques for the production and inoculation of secondary conidia of sorghum ergot (Claviceps africana)
Tonapi, V. A., Ryley, M., Galea, V., Bhuiyan, S. and Wearing, A.. 2009. "Iterative germination and innovative techniques for the production and inoculation of secondary conidia of sorghum ergot (Claviceps africana) ." Archives of Phytopathology and Plant Protection. 42 (3), pp. 248-255. https://doi.org/10.1080/03235400601036612
Effects of conidial concentration and stigma wetness period on infection by the sorghum ergot pathogen Claviceps africana
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
Early harvest and ensilage of forage sorghum infected with ergot (Claviceps africana) reduces the risk of livestock poisoning
Blaney, B. J., Ryley, M. J. and Boucher, B. D.. 2010. "Early harvest and ensilage of forage sorghum infected with ergot (Claviceps africana) reduces the risk of livestock poisoning." Australian Veterinary Journal. 88 (8), pp. 311-312. https://doi.org/10.1111/j.1751-0813.2010.00590.x
First report of the smut fungus Ustanciosporium appendiculatum in Australia
Shivas, R. G., McTaggart, A. R., Ryley, M. J., Scharaschkin, T. and Gambley, C. F.. 2010. "First report of the smut fungus Ustanciosporium appendiculatum in Australia." Australasian Plant Disease Notes. 5 (1), pp. 17-18. https://doi.org/10.1071/DN10007
Molecular phylogenetic analysis of Peronosclerospora (Oomycetes) reveals cryptic species and genetically distinct species parasitic to maize
Telle, Sabine, Shivas, Roger G., Ryley, Malcolm J. and Thines, Marco. 2011. "Molecular phylogenetic analysis of Peronosclerospora (Oomycetes) reveals cryptic species and genetically distinct species parasitic to maize." European Journal of Plant Pathology. 130 (4), pp. 521-528. https://doi.org/10.1007/s10658-011-9772-8
Peronosclerospora australiensis sp. nov. and Peronosclerospora sargae sp. nov., two newly recognised downy mildews in northern Australia, and their biosecurity implications
Shivas, R. G., Ryley, M. J ., Telle, S., Liberato, J. R. and Thines, M.. 2012. "Peronosclerospora australiensis sp. nov. and Peronosclerospora sargae sp. nov., two newly recognised downy mildews in northern Australia, and their biosecurity implications." Australasian Plant Pathology. 41 (2), pp. 125-130. https://doi.org/10.1007/s13313-011-0097-z
First report of the powdery mildew Erysiphe diffusa on soybean in Australia
McTaggart, A. R., Ryley, M. J. and Shivas, R. G.. 2012. "First report of the powdery mildew Erysiphe diffusa on soybean in Australia." Australasian Plant Disease Notes. 7 (1), pp. 127-129. https://doi.org/10.1007/s13314-012-0065-7
New weed hosts of Macrophomina phaseolina in Australia
Fuhlbohm, M. J., Ryley, M. J. and Aitken, E. A. B.. 2012. "New weed hosts of Macrophomina phaseolina in Australia." Australasian Plant Disease Notes. 7 (1), pp. 193-195. https://doi.org/10.1007/s13314-012-0082-6
Early assessment of sorghum lines for resistance to Fusarium stalk rot
White, Jodie and Ryley, Malcolm. 2013. "Early assessment of sorghum lines for resistance to Fusarium stalk rot ." AusSorg 2013. Mt Tamborine, Australia 31 Jul - 01 Aug 2013
Assessing head blight resistance (tolerance) to Fusarium thapsinum in sorghum
Ryley, M. J. and White, Jodie. 2013. "Assessing head blight resistance (tolerance) to Fusarium thapsinum in sorghum." AusSorg 2013. Mt Tamborine, Australia 31 Jul - 01 Aug 2013
Chickpeas! Varietal performance, wet feet and root rot, virus and salinity effects in 2012, Ascochyta management, seed quality, issues in central Queensland and effects of desiccating too early with glyphosate on seed germination
Moore, Kevin, Ryley, Mal and Sharman, Murray. 2013. "Chickpeas! Varietal performance, wet feet and root rot, virus and salinity effects in 2012, Ascochyta management, seed quality, issues in central Queensland and effects of desiccating too early with glyphosate on seed germination." 2013 GRDC Grains Research Update, Northern Region. Goondiwindi, Australia 05 - 06 Mar 2013 Canberra, Australia.
Indigenous fungi as pathogens of crops: some examples from Australia
Ryley, Malcolm and Shivas, Roger. 2013. "Indigenous fungi as pathogens of crops: some examples from Australia." Asian Mycological Congress 2013 and 13th International Marine and Freshwater Mycology Symposium (AMC 2013). Beijing, China 19 - 23 Aug 2103 Beijing, China.
Response of chickpea genotype to Phytophthora root rot, PRR (Phytophthora medicaginis)
Moore, Kevin, Ryley, Malcolm, Hobson, Kristy, Harden, Steve, Martin, William, King, Kris, Nash, Paul and Chiplin, Gail. 2013. "Response of chickpea genotype to Phytophthora root rot, PRR (Phytophthora medicaginis)." Pulse Breeding Australia Inaugural Conference (PBA 2013): Expanding Horizons. Adelaide, Australia 20 - 23 Oct 2013
Infection of mungbean seed is more likely to result from localised pod infection than from systemic plant infection
Fuhlbohm, M. J., Ryley, M. J. and Aitken, E. A. B.. 2013. "Infection of mungbean seed is more likely to result from localised pod infection than from systemic plant infection." Plant Pathology. 62 (6), pp. 1271-1284. https://doi.org/10.1111/ppa.12047
Yield losses in grain sorghum due to rust infection
White, Jodie A., Ryley, Malcolm J., George, Doug L., Kong, Gary A. and White, Simon C.. 2012. "Yield losses in grain sorghum due to rust infection ." Australasian Plant Pathology. 41 (1), pp. 85-91. https://doi.org/10.1007/s13313-011-0093-3
Mechanical harvesting reduces sphacelia/sclerote levels of claviceps africana
Ryley, M. J., Jensen, T. and Kyei, A. N.. 2003. "Mechanical harvesting reduces sphacelia/sclerote levels of claviceps africana." International Sorghum and Millets Newsletter.
Identification of multiple root disease resistant wheat germplasm against cereal nematodes and dryland root rot and their validation in regions of economic importance
Nicol, J. M., Sahin, E., Wallwork, H., Chakraborty, S., Lu, M., O'Brien, L., Sutherland, M., Horne, M., Simpfendorfer, S., Herde, D., Ogbonnaya, F., Duvellier, E., Bolat, N., Yahyaoui, A., Buerstmayr, H., Lewis, J., Crossa, J., Singh, A. K., Bishnoi, S. P., ..., Gargouri, S.. 2008. "Identification of multiple root disease resistant wheat germplasm against cereal nematodes and dryland root rot and their validation in regions of economic importance." Appels, Rudi (ed.) 11th International Wheat Genetics Symposium 2008 (IWGS 2008). Brisbane, Australia 24 - 29 Aug 2008 Sydney, Australia.