Ação antagonista in vitro de Trichoderma spp. sobre Fusarium oxysporum

Ciencia Florestal

article

Alexsandra Cezimbra Quevedo¹  Marlove Fátima Brião Muniz¹  Lucas Graciolli Savian¹  Janaina Silva Sarzi¹  Mateus Alves Saldanha¹ 

[1] Universidade Federal de Santa Maria

关键词: Biological control;    Mate;    Volatile metabolites;   

DOI  :  10.5902/1980509868437

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Pesquisas Florestais

【 摘 要 】

Yerba mate (Ilex paraguariensis) crop is susceptible to many disease-causing agents that affect a plant, like a root rot, reducing its productivity. The present study aimed to evaluate the in vitro antagonist potential of Trichoderma sp. on Fusarium oxysporum, the causal agent of root rot in yerba mate. Four Trichoderma spp. isolates and one Fusarium oxysporum isolate were used. The antagonistic action of Trichoderma spp. on F. oxysporum was evaluated through the dual cultures and volatile metabolites tests. The results of the dual cultures assay revealed that Trichoderma spp. inhibited the mycelial growth of Fusarium oxysporum, with percent inhibition ranging from 13.06 to 14.24%. Moreover, in the volatile metabolites test, T. tomentosum and T. harzianum showed the best inhibition results, 27.70 and 24.46%, respectively. Thus, Trichoderma spp. presented in vitro antagonist potential in the control of Fusarium oxysporum.

【 授权许可】

CC BY-NC