期刊
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
卷 61, 期 -, 页码 898-902出版社
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/ijs.0.023838-0
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资金
- Claude Leon Foundation, Cape Town, South Africa
- South Africa/Japan Science and Technology Agency Cooperation Programme
A fructophilic lactic acid bacterium, designated strain F214-1(T), was isolated from a flower of Tropaeolum majus in South Africa. Based on phylogenetic analysis of 16S rRNA gene sequences, the strain formed a subcluster with Fructobacillus ficulneus and Fructobacillus pseudo ficulneus and, based on recA gene sequences, the strain formed a subcluster with F ficulneus. DNA-DNA hybridization studies showed that strain F214-1(T) was phylogenetically distinct from its closest relatives. Acid was produced from the fermentation of D-glucose, D-fructose and D-mannitol only. D-Fructose was the preferred sole carbon and energy source and was fermented more rapidly than D-glucose. Growth of the strain on D-glucose under anaerobic conditions was very weak but external electron acceptors such as oxygen and pyruvate enhanced growth on D-glucose. Lactic acid and acetic acid were produced from D-glucose in equimolar amounts. Ethanol was produced at very low levels, despite the strain's obligately heterofermentative metabolism. Based on these data, strain F214-1(T) represents a novel species of fructophilic bacteria in the genus Fructobacillus, for which the name Fructobacillus tropaeoli sp. nov. is proposed. The type strain is F214-1(T) (=JCM 16675(T) =DSM 23246(T)).
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