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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

onitoring of Brazilian wheat blast field populations reveals resistance to QoI, DMI, and SDHI fungicide

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Vicentini, Samara N. C. [1] ; Casado, Priscila S. [1, 2] ; de Carvalho, Giselle [1, 3] ; Moreira, I, Silvino ; Dorigan, Adriano F. [4] ; Silva, Tatiane C. [5] ; Silva, Abimael G. [5] ; Custodio, Adriano A. P. [6] ; Gomes, Ana Carolina S. [5] ; Maciel, Joao L. Nunes [7] ; Hawkins, Nichola [8, 9] ; McDonald, Bruce A. [10] ; Fraaije, Bart A. [8, 9] ; Ceresini, Paulo C. [5]
Total Authors: 14
Affiliation:
[1] Sao Paulo State Univ, Dept Crop Protect Agr Engn & Soil, Dept Fitossanidade Engn Rural & Solos, UNESP, Ilha Solteira, SP - Brazil
[2] Vale Parana SA Alcool & Acucar, Suzanapolis, SP - Brazil
[3] SENAI, Biomass Innovat Inst, Tres Lagoas, MS - Brazil
[4] UFLA Fed Univ Lavras, Dept Plant Pathol, Lavras, MG - Brazil
[5] Moreira, Silvino, I, Sao Paulo State Univ, Dept Crop Protect Agr Engn & Soil, Dept Fitossanidade Engn Rural & Solos, UNESP, Ilha Solteira, SP - Brazil
[6] IDR Parana IAPAR, Parana Rural Dev Inst, Londrina, Parana - Brazil
[7] Brazilian Agr Res Corp EMBRAPA Wheat, Passo Fundo, RS - Brazil
[8] Rothamsted Res, Biointeract & Crop Protect, Harpenden, Herts - England
[9] Natl Inst Agr Bot, Cambridge - England
[10] Swiss Fed Inst Technol, Inst Integrat Biol, Plant Pathol Grp, Zurich - Switzerland
Total Affiliations: 10
Document type: Journal article
Source: PLANT PATHOLOGY; v. 71, n. 2 SEP 2021.
Web of Science Citations: 0
Abstract

Wheat blast is one of the most important and devastating fungal diseases of wheat in South America, South-east Asia, and now in southern Africa. The disease can reduce grain yield by up to 70% and is best controlled using integrated disease management strategies. The difficulty in disease management is compounded by the lack of durable host resistance and the ineffectiveness of fungicide sprays. New succinate dehydrogenase inhibitor (SDHI) fungicides were recently introduced for the management of wheat diseases. Brazilian field populations of the wheat blast pathogen Pyricularia oryzae Triticum lineage (PoTl) sampled from different geographical regions in 2012 and 2018 were shown to be resistant to both QoI (strobilurin) and DMI (azole) fungicides. The main objective of the current study was to determine the SDHI baseline sensitivity in these populations. Moderate levels of SDHI resistance were detected in five out of the six field populations sampled in 2012 and in most of the strains isolated in 2018. No association was found between target site mutations in the sdhB, sdhC, and sdhD genes and the levels of SDHI resistance, indicating that a pre-existing resistance mechanism not associated with target site mutations is probably present in Brazilian wheat blast populations. (AU)

FAPESP's process: 17/50456-1 - Understanding the evolution of fungicide resistance in field populations of the wheat blast pathogen from Brazil: can we learn lessons for future disease management?
Grantee:Paulo Cezar Ceresini
Support Opportunities: Regular Research Grants
FAPESP's process: 19/12509-1 - Novel real-time disease surveillance and fungicide resistance monitoring tools to foster a smart and sustainable crop protection platform in Brazil
Grantee:Silvino Intra Moreira
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/10453-8 - The rise of Pyricularia tritici sp. Nov. as the wheat blast pathogen in Brazil: sympatric speciation inferred from multilocus gene phylogeny, pathogenicity spectra and avirulence genes evolution
Grantee:Paulo Cezar Ceresini
Support Opportunities: Regular Research Grants
FAPESP's process: 18/21197-0 - Novel real-time disease surveillance and fungicide resistance monitoring tools to foster a smart and sustainable crop protection platform in Brazil
Grantee:Paulo Cezar Ceresini
Support Opportunities: Regular Research Grants
FAPESP's process: 13/10655-4 - Unraveling the local origin of the wheat blast pathogen (Magnaporthe oryzae) in Central-Southern Brazil and evidence for the emergence of resistance to Strobilurin fungicides in the pathogen populations
Grantee:Paulo Cezar Ceresini
Support Opportunities: Regular Research Grants
FAPESP's process: 20/07611-9 - Development of a joint platform for disease epidemics monitoring and fungicide resistance detection to foster a smart program for management of wheat blast in Paraná and São Paulo states
Grantee:Paulo Cezar Ceresini
Support Opportunities: Regular Research Grants