Artículos de revistas
Environmental context shapes the bacterial community structure associated to Peltigera cyanolichens growing in Tierra del Fuego, Chile
Fecha
2014Registro en:
World J Microbiol Biotechnol (2014) 30:1141–1144
DOI: 10.1007/s11274-013-1533-8
Autor
Ramírez Fernández, Lía
Carú Marambio, Margarita
Orlando, Julieta Laura
Zúñiga, Catalina
Institución
Resumen
The structure of the associated bacterial community
of bipartite cyanolichens of the genus Peltigera
from three different environmental contexts in the Karukinka
Natural Park, Tierra del Fuego, Chile, was assessed.
The sampling sites represent different habitat contexts:
mature native forest, young native forest and grassland.
Recently it has been determined that the bacterial community
associated to lichens could be highly structured
according to the mycobiont or photobiont identities, to the
environmental context and/or to the geographic scale.
However, there are some inconsistencies in defining which
of these factors would be the most significant on determining
the structure of the microbial communities associated
with lichens, mainly because most studies compare the
bacterial communities between different lichen species
and/or with different photobiont types (algae vs. cyanobacteria).
In this work bipartite lichens belonging to the
same genus (Peltigera) symbiotically associated with
cyanobacteria (Nostoc) were analyzed by TRFLP to
determine the structure of the bacterial community intimately
associated with the lichen thalli and the one present
in the substrate where they grow. The results indicate that
the bacterial community intimately associated differs from
the one of the substrate, being the former more influenced
by the environmental context where the lichen grows.