Cyanobacterial diversity in extreme environments in Baja California, Mexico: a polyphasic study

• A. López-Cortés ^[3] ; F. García-Pichel ^[1] ; U. Nübel ^[2] ; R. Vázquez-Juárez ^[3]
  1. [1] Arizona State University

     Arizona State University

     Estados Unidos

     
  2. [2] Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures

     Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures

     Kreisfreie Stadt Braunschweig, Alemania

     
  3. [3] Molecular Microbial Ecology Laboratory, The Center for Biological Research of the Northwest, CIBNOR, La Paz, Baja California Sur, Mexico

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• Localización: International microbiology: official journal of the Spanish Society for Microbiology, ISSN 1139-6709, Vol. 4, Nº. 4, 2001, págs. 227-236
• Idioma: inglés
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• Resumen

  • 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 alsopresented. 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.