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Environ Microbiol. 2005 Sep;7(9):1405-12.

Analysis of the distribution and diversity in recent Hawaiian volcanic deposits of a putative carbon monoxide dehydrogenase large subunit gene.

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Darling Marine Center, University of Maine, 193 Clark's Cove Road, Walpole, ME 04573, USA.


A putative carbon monoxide dehydrogenase large subunit gene (BMS putative coxL) was amplified from genomic DNA extracts of four recent (42-300 year old) Hawaiian volcanic deposits by polymerase chain reaction (PCR). Sequence databases derived from clone libraries constructed using PCR products were analysed phylogenetically and statistically. These analyses indicated that each of the deposits supported distinct BMS putative coxL gene assemblages. Statistical analyses also showed that the youngest deposit (42 years old) contained the least diverse sequences (P<0.05), but that diversity did not vary significantly among three older deposits with ages from about 108-300 years. Although diversity indices did not vary among the older deposits, mismatch analyses suggested population structures increased in complexity with increasing deposit age. At each of the sites, most of the clone sequences appeared to originate from Proteobacteria not currently represented in culture or recognized as CO oxidizers.

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