Halogeometricum borinquense gen. nov., sp. nov., a novel halophilic archaeon from Puerto Rico

Rafael Montalvo-Rodríguez, Russell H. Vreeland, Aharon Oren, Martin Kessel, Carlos Betancourt, Juan López-Garriga*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

79 Scopus citations


A novel extremely halophilic archaeon was isolated from the solar salterns of Cabo Rojo, Puerto Rico. The organism is very pleomorphic, motile and requires at least 8% (w/v) NaCl to grow. Polar lipid composition revealed the presence of a novel non-sulfate-containing glycolipid and the absence of the glycerol diether analogue of phosphatidylglycerosulfate. The G+C content of the DNA is 59 mol%. On the basis of 16S rRNA sequence data, the new isolate cannot be classified in one of the recognized genera, but occupies a position that is distantly related to the genus Haloferax. All these features justify the creation of a new genus and a new species for the family Halobacteriaceae, order Halobacteriales. The name Halogeometricum borinquense gen. nov., sp. nov. is proposed. The type strain is ATCC 700274(T).

Original languageAmerican English
Pages (from-to)1305-1312
Number of pages8
JournalInternational Journal of Systematic Bacteriology
Issue number4
StatePublished - Oct 1998


  • Archaea
  • Halogeometricum borinquense gen. nov.
  • Halophilic bacteria
  • Sp. nov.


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