Cyanobacterial diversity in extreme environments in Baja California, Mexico: a polyphasic study |
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Authors: | A López-Cortés F García-Pichel U Nübel R Vázquez-Juárez |
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Institution: | (1) Molecular Microbial Ecology Laboratory, The Center for Biological Research of the Northwest, CIBNOR, Mar Bermejo 195, Playa Palo Santa Rita, La Paz, 23090, Baja California Sur, Mexico,;(2) Microbiology Department, Arizona State University, Tempe, AZ 85287, USA,;(3) Deutsche Sammlung von Mikroorganismen und Zellkulturen, Mascheroder Weg 1B, 38124 Braunschweig, Germany, |
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Abstract: | Cyanobacterial diversity from two geographical areas of Baja California Sur, Mexico, were studied: Bahia Concepcion, and
Ensenada de Aripez. The sites included hypersaline ecosystems, sea bottom, hydrothermal springs, and a shrimp farm. In this
report we describe four new morphotypes, two are marine epilithic from Bahia Concepcion, Dermocarpa sp. and Hyella sp. The third, Geitlerinema sp., occurs in thermal springs and in shrimp ponds, and the fourth, Tychonema sp., is from a shrimp pond. The partial sequences of the 16S rRNA genes and the phylogenetic relationship of four cyanobacterial
strains (Synechococcus cf. elongatus, Leptolyngbya cf. thermalis, Leptolyngbya sp., and Geitlerinema sp.) are also presented. Polyphasic studies that include the combination of light microscopy, cultures and the comparative
analysis of 16S rRNA gene sequences provide the most powerful approach currently available to establish the diversity of these
oxygenic photosynthetic microorganisms in culture and in nature.
Electronic Publication |
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Keywords: | Cyanobacteria Phylogeny Diversity Extreme environments Baja California |
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