Person: Hodson, D.P.
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Hodson
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D.P.
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Hodson, D.P.
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0000-0002-7691-010212 results
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- Transmission pathways for the stem rust pathogen into Central and East Asia and the role of the alternate host, barberry(IOP Publishing Ltd, 2024) Bradshaw, C.D.; Hemming, D.L.; Mona, T.; Thurston, W.; Seier, M.K.; Hodson, D.P.; Smith, J.W.; Eyre, D.; Tai-Guo Liu; Taylor, B.; Davie, J.C.S.; Urhausen, S.; Crocker, T.; Millington, S.; Hort, M.C.; Feng Zhang; Hongmei Li; Gilligan, C.A.
Publication - Advancing crop disease early warning in South Asia by complementing expert surveys with internet media scraping(Royal Meteorological Society ;, 2024) Smith, J.W.; Faisal, A.A.; Hodson, D.P.; Baidya, S.; Bhatta, M.; Dhruba Bahadur Thapa; Basnet, R.; Thurston, W.; Krupnik, T.J.; Gilligan, C.A.
Publication - Three-dimensional visualization of long-range atmospheric transport of crop pathogens and insect pests(MDPI, 2023) Meyer, M.; Thurston, W.; Smith, J.W.; Schumacher, A.; Millington, S.; Hodson, D.P.; Cressman, K.; Gilligan, C.A.
Publication - Wheat rust early warning prevents yellow rust epidemic in Ethiopian wheat fields(CIMMYT, 2022) Hodson, D.P.; Acevedo, M.; Alemayehu, Y.; Nigussie, B.; Salato, Z.; Guta, K.; Gemechu, A.; Negash, T.; Mideksa, T.; Gebeyehu, T.; Hailemariam, H.; Yohannes, M.; Smith, J.W.; Hansen, J.; Thach, T.; Thurston, W.; Mona, T.; Millington, S.; Hovmoller, M.S.; Gilligan, C.A.
Publication - Irrigation can create new green bridges that promote rapid intercontinental spread of the wheat stem rust pathogen(IOP Publishing Ltd., 2022) Bradshaw, C.D.; Thurston, W.; Hodson, D.P.; Mona, T.; Smith, J.W.; Millington, S.; Blasch, G.; Alemayehu, Y.; Danu, K.G.; Hort, M.C.; Gilligan, C.A.
Publication - Wheat rust epidemics damage Ethiopian wheat production: a decade of field disease surveillance reveals national-scale trends in past outbreaks(Public Library of Science, 2021) Meyer, M.; Bacha, N.; Tesfaye, T.; Alemayehu, Y.; Abera, E.; Hundie, B.; Woldeab, G.; Girma, B.; Gemechu, A.; Negash, T.; Mideksa, T.; Smith, J.; Jaleta, M.; Hodson, D.P.; Gilligan, C.A.
Publication - Developing wheat rust early warning systems for South Asia(CIMMYT, 2020) Hodson, D.P.; Krupnik, T.J.; Salam, M.U.; Bhatta, M.; Washiq, F.; Faisal, A.; Gilligan, C.A.; Smith, J.; Mona, T.; Millington, S.; Thurston, W.
Publication - An early warning system to predict and mitigate wheat rust diseases in Ethiopia(IOP Publishing, 2019) Allen, C.; Thurston, W.; Meyer, M.; Nure, E.; Bacha, N.; Alemayehu, Y.; Stutt, R.; Safka, D.; Craig, A.P.; Derso, E.; Burgin, L.; Millington, S.; Hort, M.C.; Hodson, D.P.; Gilligan, C.A.Wheat rust diseases pose one of the greatest threats to global food security, including subsistence farmers in Ethiopia. The fungal spores transmitting wheat rust are dispersed by wind and can remain infectious after dispersal over long distances. The emergence of new strains of wheat rust has exacerbated the risks of severe crop loss. We describe the construction and deployment of a near realtime early warning system (EWS)for two major wind-dispersed diseases of wheat crops in Ethiopia that combines existing environmental research infrastructures, newly developed tools and scientific expertise across multiple organisations in Ethiopia and the UK. The EWS encompasses a sophisticated framework that integrates field and mobile phone surveillance data, spore dispersal and disease environmental suitability forecasting, as well as communication to policy-makers, advisors and smallholder farmers. The system involves daily automated data flow between two continents during the wheat season in Ethiopia. The framework utilises expertise and environmental research infrastructures from within the cross-disciplinary spectrum of biology, agronomy, meteorology, computer science and telecommunications. The EWS successfully provided timely information to assist policy makers formulate decisions about allocation of limited stock of fungicide during the 2017 and 2018 wheat seasons. Wheat rust alerts and advisories were sent by short message service and reports to 10 000 development agents and approximately 275 000 smallholder farmers in Ethiopia who rely on wheat for subsistence and livelihood security. The framework represents one of the first advanced crop disease EWSs implemented in a developing country. It provides policy-makers, extension agents and farmers with timely, actionable information on priority diseases affecting a staple food crop. The framework together with the underpinning technologies are transferable to forecast wheat rusts in other regions and can be readily adapted for other wind-dispersed pests and disease of major agricultural crops.
Publication - Keeping Ahead of the Rust Menace: Emerging Wheat Rust Early Warning Systems in Ethiopia(CIMMYT, [2018]) Allen, C.; Millington, S.; Thurston, W.; Hort, M.C.; Derso, E.; Seid, J.; Bacha, N.; Kotu, B.H.; Girma, B.; Nure, E.; Saunders, D.A.; Debebe, A.; Badebo, A.; Abeyo Bekele Geleta; Hodson, D.P.; Alemayehu, Y.; Gilligan, C.A.; Meyer, M.
Publication - Microsatellite analysis and urediniospore dispersal simulations support the movement of Puccinia graminis f. sp. tritici from Southern Africa to Australia(American Phytopathological Society (APS), 2019) Visser, B.; Meyer, M.; Park, R.F.; Gilligan, C.A.; Burgin, L.; Hort, M.C.; Hodson, D.P.; Pretorius, Z.The Australian wheat stem rust (Puccinia graminis f. sp. tritici) population was shaped by the introduction of four exotic incursions into the country. It was previously hypothesized that at least two of these (races 326-1,2,3,5,6 and 194-1,2,3,5,6 first detected in 1969) had an African origin and moved across the Indian Ocean to Australia on high-altitude winds. We provide strong supportive evidence for this hypothesis by combining genetic analyses and complex atmospheric dispersion modelling. Genetic analysis of 29 Australian and South African P. graminis f. sp. tritici races using microsatellite markers confirmed the close genetic relationship between the South African and Australian populations, thereby confirming previously described phenotypic similarities. Lagrangian Particle Dispersion Model simulations using finely resolved meteorological data showed that long distance dispersal events between southern Africa and Australia are indeed possible, albeit rare. Simulated urediniospore transmission events were most frequent from central South Africa (viable spore transmission on ~7% of all simulated release days) compared with other potential source regions in southern Africa. The study acts as a warning of possible future P. graminis f. sp. tritici dispersal events from southern Africa to Australia, which could include members of the Ug99 race group, emphasizing the need for continued surveillance on both continents.
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