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FERMENTATION STUDIES WITH THERMOPHILIC ARCHAEA IN PURE CULTURE AND IN SYNTROPHY WITH A THERMOPHILIC METHANOGEN
被引:9
作者:
CANGANELLA, F
[1
]
JONES, WJ
[1
]
机构:
[1] GEORGIA INST TECHNOL,SCH APPL BIOL,ATLANTA,GA 30332
关键词:
D O I:
10.1007/BF01573209
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
Two heterotrophic, thermophilic, sulfur-reducing archaea were isolated from the Guaymas Basin hydrothermal vent. The fermentation of proteinaceous and carbohydrate substrates was examined at 85-degrees-C for each isolate in the presence and absence of elemental sulfur and in coculture with a thermophilic methanogen. The heterotrophic isolates differed with respect to their requirement for sulfur. Both heterotrophic isolates exhibited a mixed organic acid fermentation from proteinaceous substrates; however, acetate was the sole organic acid produced from carbohydrate fermentation. In coculture fermentations with a thermophilic methanogen, the heterotrophic isolates exhibited enhanced growth and fermentation. Interspecies hydrogen transfer and elemental sulfur-reduction may be important microbial processes in deep-sea hydrothermal vent community metabolism.
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页码:293 / 298
页数:6
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