Ana E Escalante, Jesus Caballero-Mellado, Lourdes Martínez-Aguilar, Alejandra Rodríguez-Verdugo, Andrea Gonzalez-Gonzalez, Jeiry Toribio-Jimenez, Valeria Souza Abstract Nine Gram-negative, rod-shaped, non-spore-forming isolates with identical or very similar repetitive-sequence-based PCR profiles were recovered from an evaporative lagoon in Mexico. Two strains, designated 1N(T) and 3N, had virtually identical 16S rRNA gene sequences and, on the basis of…

LI Falcón, R Cerritos, LE Eguiarte, V Souza Abstract Nitrogen fixation (nitrogenase activity, NA) of a microbial mat and a living stromatolite from Cuatro Cienegas, Mexico, was examined over spring, summer, and winter of 2004. The goal of the study was to characterize the diazotrophic community through molecular analysis of the nifH gene and using…

Eneas Aguirre‐von‐Wobeser, Gloria Soberón‐Chávez, Luis E Eguiarte, Gabriel Yaxal Ponce‐Soto, Mirna Vázquez‐Rosas‐Landa, Valeria Souza Abstract Antagonistic interactions are frequently observed among bacteria in the environment and result in complex networks, which could promote co-existence, and therefore promote biodiversity. We analysed interactions of aquatic bacteria isolated by their ability to grow in Pseudomonas isolation agar from…

Nguyen E Lopez-Lozano, Karla B Heidelberg, William C Nelson, Felipe García-Oliva, Luis E Eguiarte, Valeria Souza Abstract Ecological succession is one of the most important concepts in ecology. However for microbial community succession, there is a lack of a solid theoretical framework regarding succession in microorganisms. This is in part due to microbial community complexity…