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Research article - Peer-reviewed, 2021

Increasing temperature elevates the variation and spatial differentiation of pesticide tolerance in a plant pathogen

Lurwanu, Yahuza; Wang, Yan-Ping; Wu, E-Jiao; He, Dun-Chun; Waheed, Abdul; Nkurikiyimfura, Oswald; Wang, Zhen; Shang, Li-Ping; Yang, Li-Na; Zhan, Jiasui;


Climate change and pesticide resistance are two of the most imminent challenges human society is facing today. Knowledge of how the evolution of pesticide resistance may be affected by climate change such as increasing air temperature on the planet is important for agricultural production and ecological sustainability in the future but is lack in scientific literatures reported from empirical research. Here, we used the azoxystrobin-Phytophthora infestans interaction in agricultural systems to investigate the contributions of environmental temperature to the evolution of pesticide resistance and infer the impacts of global warming on pesticide efficacy and future agricultural production and ecological sustainability. We achieved this by comparing azoxystrobin sensitivity of 180 P. infestans isolates sampled from nine geographic locations in China under five temperature schemes ranging from 13 to 25 degrees C. We found that local air temperature contributed greatly to the difference of azoxystrobin tolerance among geographic populations of the pathogen. Both among-population and within-population variations in azoxystrobin tolerance increased as experimental temperatures increased. We also found that isolates with higher azoxystrobin tolerance adapted to a broader thermal niche. These results suggest that global warming may enhance the risk of developing pesticide resistance in plant pathogens and highlight the increased challenges of administering pesticides for effective management of plant diseases to support agricultural production and ecological sustainability under future thermal conditions.


adaptive evolution; climatic change; disease management; fitness penalty; fungicide resistance; Phytophthora infestans

Published in

Evolutionary applications

2021, volume: 14, number: 5, pages: 1274-1285
Publisher: WILEY

Authors' information

Lurwanu, Yahuza
Bayero University
Wang, Yan-Ping
Fujian Agriculture and Forestry University
Wu, E-Jiao
Jiangsu Academy of Agricultural Sciences
He, Dun-Chun
Fujian Jiangxia University
Waheed, Abdul
Fujian Agriculture and Forestry University
Nkurikiyimfura, Oswald
Fujian Agriculture and Forestry University
Wang, Zhen
Enshi Academy of Agricultural Sciences
Shang, Li-Ping
Fujian Agriculture and Forestry University
Yang, Li-Na
Minjiang University
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology

Associated SLU-program

SLU Network Plant Protection

Sustainable Development Goals

SDG13 Climate action

UKÄ Subject classification

Agricultural Science

Publication Identifiers


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