Diversity of aquatic prokaryotic communities in the Cuatro Cienegas basin
Por:
Escalante A.E., Eguiarte L.E., Espinosa-Asuar L., Forney L.J., Noguez A.M., Saldivar, VS
Publicada:
1 jul 2008
Resumen:
The Cuatro Cienegas basin (Coahuila, Mexico) is a composite of different water systems in the middle of the desert with unusually high levels of endemism and diversity in different taxa. Although the diversity of macrobiota has been well described, little is known about the diversity and distribution of microorganisms in the oligotrophic ponds. Here we describe the extent and distribution of diversity found in aquatic prokaryotic communities by analysis of terminal restriction fragment length polymorphisms (T-RFLP) of 16S rRNA genes and phylogenetic analysis of cloned genes. Twelve locations within the basin were sampled. Among all the samples, we found a total of 117 operational taxonomic units (OTUs) using T-RFLPs, which ranged in any single sample from four to 49. OTU richness and Shannon diversity indices for different sites varied, but none were particularly high. 16S rRNA gene sequence data showed 68 different phylotypes among 198 clones. The most abundant phylotypes were Gamma-
Filiaciones:
Escalante A.E.:
Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Inst Ecol, Mexico City 04510, DF, Mexico
Eguiarte L.E.:
Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Inst Ecol, Mexico City 04510, DF, Mexico
Espinosa-Asuar L.:
Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Inst Ecol, Mexico City 04510, DF, Mexico
Forney L.J.:
Department of Biological Sciences, University of Idaho, Moscow, ID, United States
Noguez A.M.:
Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Inst Ecol, Mexico City 04510, DF, Mexico
Saldivar, VS:
Univ Nacl Autonoma Mexico, Dept Ecol Evolut, Inst Ecol, Mexico City 04510, DF, Mexico
Bronze
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