Publications by authors named "K Pedley"

Wheat blast, caused by the pathotype of , is an emerging disease that threatens the global supply of wheat. The pathogen was first reported in Brazil and subsequently spread to the neighboring countries of Argentina, Bolivia, and Paraguay. More recently, wheat blast was reported in Asia and Africa, having been observed in Bangladesh and Zambia.

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This strategic plan summarizes the major accomplishments achieved in the last quinquennial by the soybean [Glycine max (L.) Merr.] genetics and genomics research community and outlines key priorities for the next 5 years (2024-2028).

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Soybean rust is an economically significant disease caused by the fungus that negatively impacts soybean ( [L.] Merr.) production throughout the world.

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The fungal pathogen, Magnaporthe oryzae Triticum pathotype, causing wheat blast disease was first identified in South America and recently spread across continents to South Asia and Africa. Here, we studied the genetic relationship among isolates found on the three continents. Magnaporthe oryzae strains closely related to a South American field isolate B71 were found to have caused the wheat blast outbreaks in South Asia and Africa.

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Article Synopsis
  • - Most plant pathogens usually infect specific hosts, but when these barriers weaken, new diseases can form quickly; the study focuses on the fungus Pyricularia oryzae, which has caused new plant diseases like wheat blast and grey leaf spot.
  • - The research reveals that the emergence of these diseases involved two important hybridization events over the last 70 years, leading to genetic changes that allowed the fungus to adapt to different plant hosts.
  • - Findings suggest that the adaptation to new hosts happened rapidly without many new mutations, relying instead on existing genetic variation that was reshuffled through mating, indicating that the fungus exploited already available traits to adapt quickly to new environments.
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