Study of the interactions between Penicillium oxalicum Currie & Thom and Alternaria alternata (Fr.) Keissler

Revista de microbiologia

Sempere, F.¹ 

[1] Universidad Politécnica de Valencia, España

关键词: Alternaria alternata;    Penicillium oxalicum;    rice;    water activity;    mycoparasitism.;   

DOI  :  10.1590/S1517-83822010005000003

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Microbiologia / Brazilian Society for Microbiology

【 摘 要 】

The aim of this research was the analysis of the possible antagonistic effect of Penicillium oxalicum over the pathogen rice fungus A. alternata under different conditions of temperature, water activity and culture media. The macroscopic study of the dual growth revealed that according to the Index of Dominance P. oxalicum was more competitive that A. alternata at 25ºC whereas at 15ºC was this species. Microscopic analysis showed that P. oxalicum was a mycoparasite of A. alternata at all conditions tested. The antagonist penetrated into A. alternata and disintegrated its conidiophores and conidia. The results suggests that P. oxalicum may be a possible biological control agent of the rice pathogens in a future.

【 授权许可】

CC BY-NC