In this study, we evaluated the effect of low and high molecular weightpolycyclic aromatic hydrocarbons (PAHs), i.e., Phenanthrene, Pyrene and Benzo[a]pyrene, on the radial growth and morphology of the PAH-degrading fungal strainsAspergillus nomius H7 and Trichoderma asperellum H15. The presence of PAHs in solid medium produced significant detrimental effects on the radial growth of A. nomius H7 at 4,000 and 6,000 mg L−1 and changes in myceliumpigmentation, abundance and sporulation ability at 1,000–6,000 mg L−1. In contrast, the radial growth of T. asperellum H15 was not affected at any of the doses tested, although sporulation was observed only up to 4,000 mg L−1 and as with the H7 strain, some visible changes in sporulation patterns and myceliumpigmentation were observed. Our results suggest that fungal strains exposed to high doses of PAHs significantly vary in their growth rates and sporulation characteristics in response to the physiological and defense mechanisms that affect both pigment production and conidiation processes. This finding is relevant for obtaining a better understanding of fungal adaptation in PAH-polluted environments and for developing and implementing adequate strategies for the remediation of contaminated soils.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Fenantrenos
/
Hidrocarbonetos Policíclicos Aromáticos
/
Pirenos
/
Aspergillus
/
Esporos Fúngicos
/
Trichoderma
/
Benzo(a)pireno
/
Micélio
Idioma:
En
Revista:
Braz. j. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
/
Project document
País de afiliação:
México
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Fenantrenos
/
Hidrocarbonetos Policíclicos Aromáticos
/
Pirenos
/
Aspergillus
/
Esporos Fúngicos
/
Trichoderma
/
Benzo(a)pireno
/
Micélio
Idioma:
En
Revista:
Braz. j. microbiol
Assunto da revista:
MICROBIOLOGIA
Ano de publicação:
2015
Tipo de documento:
Article
/
Project document
País de afiliação:
México
Consulta Detalhada
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