English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Resistant varieties have been the preferred means to control Magnaporthe grisea, the causal organism of the rice blast disease. The objective of this study was to examine the degree of diversity of the pathogen in different rice growing regions of São Paulo State, Brazil. Blast samples collected from rice varieties in three different regions (Tremembé, Mococa and José Bonifácio) were analyzed for race structure employing the Japanese rice differentials. The highest degree of virulence diversity was observed in Tremembé with 22 different races in three different varieties. Furthermore, no resistance gene in the Japanese differentials was effective to all isolates of M. grisea from São Paulo State. Variedades resistentes têm sido o método preferido de controle de Magnaporthe grisea, agente causal da brusone do arroz. O objetivo deste estudo foi examinar o grau de diversidade do patógeno em diferentes regiões produtoras de arroz do Estado de São Paulo. Amostras de brusone obtidas de diferentes variedades das regiões de Tremembé, Mococa e José Bonifácio foram analisadas quanto à estrutura das raças, empregando-se as diferenciais Japonesas de arroz. A maior diversidade da virulência foi observada em Tremembé com 22 raças, em três variedades distintas. Não foi identificado nenhum gene de resistência nas diferenciais japonesas que fosse efetivo contra todos os isolados de M. grisea do Estado de São Paulo

Variation in virulence in the rice blast fungus Magnaporthe grisea in São Paulo State