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Bol. micol ; 21: 49-53, dic. 2006. ilus, tab
Article in Spanish | LILACS | ID: lil-476906

ABSTRACT

Mediante una investigación a lo largo del sector suburbano de la ciudad de Loja-Ecuador, dedicada al cultivo de plantas medicinales, se aíslaron los hongos endófitos asociados a Baccharis latifolia (Ruiz & Pav.) Pers., Baccharis obtusifolia Kunth, Piper barbatum Kunth, Borreria laevis (Lam.) Grises, Chuquiragua jussieui J.F. Gmel y Bidens andicola Kunth. Los taxa fúngicos más frecuentes fueron: Alternaria, Aspergillus, Epicoccum, Fusarium, Nigrospora, Phoma, además de algunos representantes de los grupos: coelomycetes, sinnematosos y Zygomycota. La mayor dominancia fúngica correspondió a integrantes de los denominados Mycelia sterilia, siendo de particular interés como posibles endófitos. Se evaluó además la interacción antagónica de siete aislados fúngicos frente a bacterias: Staphylococcus aureus, Klebsiella pneumomiae, Pseudomonas aeruginosa y Escherichia coli. La mayoría de las cepas fúngicas estudiadas presentaron actividad, pero los resultados más prometedores se evidenciaron en un aislado de Mycelia sterilia.


As a result of an investigation carried out along the suburban zone of the city of Loja-Ecuador, engaged in the growing of medicinal plants, endophytic fungi associated to Baccharis latifolia (Ruiz & Pav.) Pers., Baccharis obtusifolia Kunth, Piper barbatum Kunth, Borreria laevis (Lam) Grises, Chuquiragua jussieui J.F. Gmel and Bidens andicola Kunth were isolated. Fungal taxa most frequently appearing were: Alternaria, Aspergillus,Epicoccum, Fusarium, Nigrospora, Phoma besides some representatives of the groups: coelomycetes, synnematousand Zygomycota. Major fungal dominance was found in elements of the so-called Mycelia sterilia, which hada special interest as possible endophyte. Besides the antagonic interaction of seven fungal isolations in front of bacteria was assessed: Staphylococcus aureus, Klebsiella pneumomiae, Pseudomonas aeruginosa and Escherichia coli. Most of fungal strains investigated revealed activity , however most promising results could be seen in an isolation of Mycelia sterilia.


Subject(s)
Antibiosis , Bacteria/pathogenicity , Fungi/isolation & purification , Fungi/classification , Fungi/growth & development , Plants, Medicinal/microbiology , Ecuador
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