Detection and transmission of Microdochium oryzae from rice seed in Argentina

S. A. Gutiérrez; E. M. Reis; M. A. Carmona

doi:10.1071/DN08030

RESEARCH ARTICLE

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Detection and transmission of Microdochium oryzae from rice seed in Argentina

S. A. Gutiérrez ^A ^D , E. M. Reis ^B and M. A. Carmona ^C

+ Author Affiliations

- Author Affiliations

^A Cátedra de Fitopatología, Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, Sargento Cabral 2131 (3400), Corrientes, Argentina.

^B Fitopatología, Facultade de Agronomia e Veterinaria, UPF, Cx. Postal 611, 99001-970, Passo Fundo, Brasil.

^C Fitopatología, Facultad de Agronomia, Universidad de Buenos Aires, Av. San Martín 4453 (1417), Ciudad de Buenos Aires, Argentina.

^D Corresponding author. Email: suarroz@yahoo.com.ar

Australasian Plant Disease Notes 3(1) 75-77 https://doi.org/10.1071/DN08030
Submitted: 27 March 2008 Accepted: 23 May 2008 Published: 5 June 2008

Abstract

Microdochium oryzae is the causal agent of leaf scald of rice and is present in all stages of the crop. The seeds are considered the major source of inoculum. The fungus was isolated from diseased seeds obtained from commercial crops in the Province of Corrientes, Argentina. The pathogen was transmitted from seed to coleoptile tips in symptomless seedlings at a rate of 2.18%. Pathogenicity of the fungus was confirmed by spraying a spore suspension on healthy 15-day-old rice seedlings.

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