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Sarocladium oryzae: agente causal de la pudrición de la vaina del arroz en Venezuela / Sarocladium oryzae: causative agent of the rotting of the rice sheath in Venezuela
Cardona, Reinaldo.
  • Cardona, Reinaldo; Instituto Nacional de Investigaciones Agrícolas (INIA). Araure. VE
Rev. Soc. Venez. Microbiol ; 33(1): 80-82, jun. 2013. ilus
Article in Spanish | LILACS | ID: lil-703764
RESUMEN
En las zonas productoras de arroz en Venezuela se ha observado una enfermedad caracterizada por manchas oblongas e irregulares, de color marrón grisáceo, en la hoja envainadora de la panícula. El objetivo de este trabajo fue determinar cuál es el agente causal de la pudrición de la vaina del arroz en Venezuela. Se tomaron muestras de plantas de arroz variedad Venezuela 21 con las características descritas. Secciones de la interfase tejido sano-enfermo se sembraron en cajas de Petri con agar papa dextrosa y cajas de Petri con papel de filtro estéril humedecido con agua destilada estéril respectivamente, y se incubaron en el laboratorio hasta observar crecimiento de estructuras fúngicas. La identificación del hongo se realizó mediante la comparación de sus características micro y macroscópicas con las descritas en la literatura especializada. Esto permitió identificar los aislamientos como Sarocladium oryzae, y se pudo concluir que esta especie es el agente causal de la enfermedad de la pudrición de la vaina del arroz en Venezuela.
ABSTRACT
In the rice producing areas of Venezuela, a disease characterized by oblong and irregular spots of a grayish-brownish color on the sheath which covers the particle has been observed. The purpose of this work was to determine the causative agent of the rotting of the rice sheath in Venezuela. After taking samples of the rice plants of the Venezuela 21 variety with the above characteristics, sections of the interphase healthy-diseased tissue were inoculated into Petri dishes with potato-dextrose agar, and Petri dishes with sterile filter paper dampened with distilled water, and they were incubated in the laboratory until there was growth of fungal structures. The identification of the fungus was done by comparing its micro and macroscopic characteristics with those described in specialized literature. By this method it was possible to identify the isolates as Sarocladium oryzae, and it was concluded that this species is the causative agent of the rotting disease of the sheath of rice in Venezuela.

Full text: Available Index: LILACS (Americas) Type of study: Prognostic study Country/Region as subject: South America / Venezuela Language: Spanish Journal: Rev. Soc. Venez. Microbiol Year: 2013 Type: Article Affiliation country: Venezuela Institution/Affiliation country: Instituto Nacional de Investigaciones Agrícolas (INIA)/VE

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Full text: Available Index: LILACS (Americas) Type of study: Prognostic study Country/Region as subject: South America / Venezuela Language: Spanish Journal: Rev. Soc. Venez. Microbiol Year: 2013 Type: Article Affiliation country: Venezuela Institution/Affiliation country: Instituto Nacional de Investigaciones Agrícolas (INIA)/VE