Comparison of measurement methods for determining Macrophomina phaseolina isolate aggressiveness

Poster


Adorada, Dante, Adorada, Encarnacion, Gonzales, Precila and Sparks, Adam. 2019. "Comparison of measurement methods for determining Macrophomina phaseolina isolate aggressiveness." 22nd Biennial Australasian Plant Pathology Society Conference (APPS 2019): Strong Foundations, Future Innovations. Melbourne, Australia 25 - 28 Nov 2019
Paper/Presentation Title

Comparison of measurement methods for determining Macrophomina phaseolina isolate aggressiveness

Presentation TypePoster
AuthorsAdorada, Dante (Author), Adorada, Encarnacion (Author), Gonzales, Precila (Author) and Sparks, Adam (Author)
Year2019
Conference/Event22nd Biennial Australasian Plant Pathology Society Conference (APPS 2019): Strong Foundations, Future Innovations
Event Details
22nd Biennial Australasian Plant Pathology Society Conference (APPS 2019): Strong Foundations, Future Innovations
Parent
Australasian Plant Pathology Society Conference
Event Date
25 to end of 28 Nov 2019
Event Location
Melbourne, Australia
Abstract

Charcoal rot, caused by the fungus Macrophomina phaseolina, is an economically important sorghum stalk disease in the northern grains region of Australia. It is often associated with lodging and yield losses that usually occur during hot and dry conditions during the growing season. There are few available management strategies to minimise its effect, and so far, no resistance in sorghum has been reported. An effective charcoal rot resistance screening method requires both an aggressive isolate, representative of the pathogen population, and a repeatable inoculation method. The area under disease progress curve (AUDPC) has been used for identifying disease resistance and can be used in the selection of aggressive plant pathogen isolates for screening purposes. This study aimed to investigate if current methods of inoculation and measurements used to determine M. phaseolina isolate aggressiveness being used in Australia are effective. Two trials were conducted using 33 isolates from the northern grains region. The first trial used a single point assessment at 28 days after inoculation (DAI). The second used four weekly measures ending at 28 DAI to calculate AUDPC using a two-point method and all four timepoints for traditional AUDPC. In both trials, sorghum plants were inoculated by inserting M. phaseolina infested toothpicks into the stalk ~5 cm above the soil surface. Stalks were split and lesion length was measured. The single point method was unable to detect any difference in isolate aggressiveness. The two-point AUDPC method was not feasible due to some measurements not exceeding zero until the final reading, while the four-point AUDPC method showed significant differences at p > 0.05, but a Tukey’s post-hoc test was unable to determine any groupings. The current method of inoculating the lower stalk generated variable lesion lengths and should be re-evaluated to find methods that can generate more consistent results.

Keywordscharcol rot; Macrophomina phaseolina; sorghum stalk disease; northern grains region
ANZSRC Field of Research 2020300409. Crop and pasture protection (incl. pests, diseases and weeds)
Byline AffiliationsCentre for Crop Health
Institution of OriginUniversity of Southern Queensland
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Sparks, Adam H., Hengl, Tomislav and Nelson, Andrew. 2017. GSODR: Global Summary Daily Weather Data in R. https://cran.r-project.org/package=GSODR. Comprehensive R Archive Network. https://doi.org/10.21105/joss.00177
Tapping into ancient sources of disease resistance to protect our modern barley cultivars - barley scald 2015
Adorada, Dante and Milgate, Andrew. 2016. "Tapping into ancient sources of disease resistance to protect our modern barley cultivars - barley scald 2015." Southern NSW Research Results 2015.
Reaction of Australian barley varieties to scald from southern NSW 2015
Adorada, Dante and Milgate, Andrew. 2016. "Reaction of Australian barley varieties to scald from southern NSW 2015." Southern NSW Research Results 2015.
Spatial modelling of rice yield losses in Tanzania due to bacterial leaf blight and leaf blast in a changing climate
Duku, Confidence, Sparks, Adam H. and Zwart, Sander J.. 2016. "Spatial modelling of rice yield losses in Tanzania due to bacterial leaf blight and leaf blast in a changing climate." Climatic Change: an interdisciplinary, international journal devoted to the description, causes and implications of climatic change. 135 (3-4), pp. 569-583. https://doi.org/10.1007/s10584-015-1580-2
Decision tools for bacterial blight resistance gene deployment in rice-based agricultural ecosystems
Dossa, Gerbert S., Sparks, Adam, Vera Cruz, Cassiana and Oliva, Ricardo. 2015. "Decision tools for bacterial blight resistance gene deployment in rice-based agricultural ecosystems." Frontiers in Plant Science. 6, pp. 1-5. https://doi.org/10.3389/fpls.2015.00305
Climate change may have limited effect on global risk of potato late blight
Sparks, Adam H., Forbes, Gregory A., Hijmans, Robert J. and Garrett, Karen A.. 2014. "Climate change may have limited effect on global risk of potato late blight." Global Change Biology. 20 (12), pp. 3621-3631. https://doi.org/10.1111/gcb.12587
A review on crop losses, epidemiology and disease management of rice brown spot to identify research priorities and knowledge gaps
Barnwal, M. K., Kotasthane, A., Magculia, N., Mukherjee, P. K., Savary, S., Sharma, A. K., Singh, H. B., Singh, U. S., Sparks, A. H., Variar, M. and Zaidi, N.. 2013. "A review on crop losses, epidemiology and disease management of rice brown spot to identify research priorities and knowledge gaps." European Journal of Plant Pathology. 136 (3), pp. 443-457. https://doi.org/10.1007/s10658-013-0195-6
Taking transgenic rice drought screening to the field
Gaudin, Amelie C. M., Henry, Amelia, Sparks, Adam H. and Slamet-Loedin, Inez H.. 2013. "Taking transgenic rice drought screening to the field." Journal of Experimental Botany. 64 (1), pp. 109-117. https://doi.org/10.1093/jxb/ers313
An economic assessment of the impact of mango pulp weevil on the agricultural sector of Palawan, Philippines
McKinley, Justin D., Sparks, Adam H., Pede, Valerien O. and Duff, Bart. 2012. "An economic assessment of the impact of mango pulp weevil on the agricultural sector of Palawan, Philippines." The Philippine Agricultural Scientist: an international journal of tropical agriculture and related sciences. 95 (3), pp. 286-292.
Complexity in climate-change impacts: an analytical framework for effects mediated by plant disease
Garrett, K. A., Forbes, G. A., Savary, S., Skelsey, P., Sparks, A. H., Valdivia, C., van Bruggen, A. H. C., Willocquet, L., Djurle, A., Duveiller, E., Eckersten, H., Pande, S., Vera Cruz, C. and Yuen, J.. 2011. "Complexity in climate-change impacts: an analytical framework for effects mediated by plant disease." Plant Pathology. 60 (1), pp. 15-30. https://doi.org/10.1111/j.1365-3059.2010.02409.x
International agricultural research tackling the effects of global and climate changes on plant diseases in the developing world
Savary, Serge, Nelson, Andrew, Sparks, Adam H, Willocquet, Laetitia, Duveiller, Etienne, Mahaku, George, Forbes, Greg, Garrett, Karen A., Hodson, David, Padgham, Jon, Pande, Suresh, Sharma, Mamta, Yuen, Jonathan and Djurle, Annika. 2011. "International agricultural research tackling the effects of global and climate changes on plant diseases in the developing world." Plant Disease: an international journal of applied plant pathology. 95 (10), pp. 1204-1216. https://doi.org/10.1094/PDIS-04-11-0316
A metamodeling framework for extending the application domain of process-based ecological models
Sparks, Adam H., Forbes, Gregory A., Hijmans, Robert and Garrett, Karen A.. 2011. "A metamodeling framework for extending the application domain of process-based ecological models." Ecosphere. 2 (8). https://doi.org/10.1890/ES11-00128.1
Bacteria associated with sheath browning and grain discoloration of rice in East Timor and implications for Australia’s biosecurity
Adorada, Dante L., Stodart, Benjamin J., Tpoi, Roni P., Costa, Severino S. and Ash, Gavin J.. 2013. "Bacteria associated with sheath browning and grain discoloration of rice in East Timor and implications for Australia’s biosecurity." Australasian Plant Disease Notes. 8 (1), pp. 43-47. https://doi.org/10.1007/s13314-013-0092-z
Implications of bacterial contaminated seed lots and endophytic colonization by Pseudomonas fuscovaginae on rice establishment
Adorada, D. L., Stodart, B. J., Pangga, I. B. and Ash, G. J.. 2015. "Implications of bacterial contaminated seed lots and endophytic colonization by Pseudomonas fuscovaginae on rice establishment." Plant Pathology. 64 (1), pp. 43-50. https://doi.org/10.1111/ppa.12243
Site suitability assessment of spotted gum (Corymbia citriodora subspecies Variegata) forest plantation in south east Queensland for carbon sequestration
Gonzales-Salcedo, Precila. 2014. Site suitability assessment of spotted gum (Corymbia citriodora subspecies Variegata) forest plantation in south east Queensland for carbon sequestration. PhD Thesis Doctor of Philosophy. University of Southern Queensland.
Carbon sequestration potential of spotted gum (Corymbia citriodora subspecies Variegata) in south east Queensland, Australia
Salcedo, Precila G., Maraseni, Tek Narayan and McDougall, Kevin. 2012. "Carbon sequestration potential of spotted gum (Corymbia citriodora subspecies Variegata) in south east Queensland, Australia." International Journal of Environmental Studies. 69 (5), pp. 770-784. https://doi.org/10.1080/00207233.2012.715833
Validation of a major QTL for salinity tolerance on chromosome 1 of rice in three different breeding populations
Islam, M.R., Gregorio, G.B., Salam, M.A., Collard, B.C.Y., Tumimbang-Raiz, E., Adorada, D.L., Mendoza, R.D., Singh, R.K. and Hassan, L.. 2011. "Validation of a major QTL for salinity tolerance on chromosome 1 of rice in three different breeding populations." Agrochimica. 55 (6), pp. 355-366.
Rice varieties and cultural management practices for high and sustained productivity in the coastal wetlands of Southern Bangladesh
Salam, M.A., Islam, M.R., Rahman, M.S., Rahman, M.A., Bhuiyan, M.A.R., Seraj, Z.I., Aditya, T.L., Uddin, M.K., Mondal, M.K., Ismail, A.M., Adorada D.L., Mendoza, R.D., Tumimbang-Raiz, E.B. and Gregorio, G.B.. 2010. "Rice varieties and cultural management practices for high and sustained productivity in the coastal wetlands of Southern Bangladesh." Hoanh, C.T., Szuster, B., Kam, S., Ismail, A. and Noble, A. (ed.) Tropical deltas and coastal zones: Food production, communities and environment at the land and water interface. CABI Publishing - Evidence on Demand. pp. 183-198
The right rice in the right place: systematic exchange and farmer-based evaluation of rice germplasm for salt-affected areas
Singh, R.K., Redoña, E., Gregorio, G.B., Salam, M.A., Islam, M.R., Singh, D.P., Sen, P., Saha, S., Mahata, K.R., Sharma, S.G., Pandey, M.P., Sajise, A.G., Mendoza, R.D., Toledo, M.C., Dante, A., Ismail, A.M., Paris, T.R., Haefele, S.M., Thomson, M.J., ..., Lang, N.T.. 2010. "The right rice in the right place: systematic exchange and farmer-based evaluation of rice germplasm for salt-affected areas." Hoanh, C.T., Szuster, B., Kam, S., Ismail, A. and Noble, A. (ed.) Tropical deltas and coastal zones: Food production, communities and environment at the land and water interface. CABI Publishing - Evidence on Demand. pp. 166-182
Characterizing the Saltol quantitative trait locus for salinity tolerance in rice
Thomson, Michael J., de Ocampo, Marjorie, Egdane, James, Rahman, M. Akhlasur, Sajise, Andres Godwin, Adorada, Dante L., Tumimbang-Raiz, Ellen, Blumwald, Eduardo, Seraj, Zeba I., Singh, Rakesh K., Gregorio, Glenn B. and Ismail, Abdelbagi M.. 2010. "Characterizing the Saltol quantitative trait locus for salinity tolerance in rice." Rice. 3 (2-3), pp. 148-160. https://doi.org/10.1007/s12284-010-9053-8
Disease development and enhanced susceptibility of wounded pepper roots to Phytophthora capsici
Adorada D. L., Biles, C. L., Liddell, C. M., Fernández-Pavía, S., Waugh, K. O. and Waugh, M. E.. 2000. "Disease development and enhanced susceptibility of wounded pepper roots to Phytophthora capsici." Plant Pathology. 49 (6), pp. 719-726. https://doi.org/10.1046/j.1365-3059.2000.00510.x
Phylogeny, Ribosomal RNA Gene Typing and Relative Abundance of New Pseudomonas species (sensu stricto) isolated from Two Pinyon-Juniper Woodland Soils of the Arid Southwest U.S.
Kuske, Cheryl R., Busch, Joseph D., Adorada, Dante L., Dunbar, John M. and Barns, Susan M.. 1999. "Phylogeny, Ribosomal RNA Gene Typing and Relative Abundance of New Pseudomonas species (sensu stricto) isolated from Two Pinyon-Juniper Woodland Soils of the Arid Southwest U.S. " Systematic and Applied Microbiology. 22 (2), pp. 300-311. https://doi.org/10.1016/S0723-2020(99)80077-0
Small-Scale DNA Sample Preparation Method for Field PCR Detection of Microbial Cells and Spores in Soil
Kuske, Cheryl R., Banton, Kaysie L., Adorada, Dante L., Stark, Peter C., Hill, Karen K. and Jackson, Paul J. Jackson. 1998. "Small-Scale DNA Sample Preparation Method for Field PCR Detection of Microbial Cells and Spores in Soil ." Applied and Environmental Microbiology. 64 (7), pp. 2463-2472. https://doi.org/10.1128/aem.64.7.2463-2472.1998