A Shift in Pathotype Diversity and Complexity of Phytophthora sojae in Brazil.

Autor:	Batista ICA; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil., Silva MPC; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil., Silva Junior AL; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil., Arrigada MPG; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil., de Camargo MP; Bayer Crop Science, São Paulo, SP, Brazil., Figueiredo A; Bayer Crop Science, São Paulo, SP, Brazil., Júnior BTH; Bayer Crop Science, São Paulo, SP, Brazil., Mizubuti ESG; Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.
Jazyk:	angličtina
Zdroj:	Plant disease [Plant Dis] 2023 Jul; Vol. 107 (7), pp. 1968-1972. Date of Electronic Publication: 2023 Jun 30.
DOI:	10.1094/PDIS-11-22-2558-SC
Abstrakt:	Soybean root and stem rot caused by the oomycete Phytophthora sojae is a destructive disease worldwide that can affect plants at any growth stage. The use of resistant cultivars is the most effective method of controlling the disease. Therefore, monitoring changes in the population of P. sojae regarding the dynamics of avirulence genes capable of overcoming resistance genes ( Rps ) is important to reduce yield losses and to enhance the effectiveness of the Rps genes. Forty isolates of P. sojae sampled from a region of high incidence of soybean root and stem rot in Brazil were characterized using 14 soybean differentials, and 28 pathotypes were identified. Compared with a study conducted a decade ago, there was a major shift in pathotype diversity and complexity toward both higher numbers of different pathotypes and of avirulence genes in a given individual in the current population of P . sojae . Breeding programs aiming at developing soybean cultivars with resistance to root and stem rot should consider the high variability in the population of P . sojae and seek for strategic deployment of genes and germplasm. Competing Interests: The author(s) declare no conflict of interest.
Databáze:	MEDLINE
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