| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Biology, Tokyo Metropolitan University, Hachioji 192-03, Japan
2 Department of Ecological Engineering, Toyohashi University of Technology, Toyohashi 441, Japan
3 Biological Laboratory, Nippon Medical School, Kawasaki 211, Japan
* Corresponding author. Present address: Microbial Population Dynamics Laborary. National Institute of Bioscience and Human-Technology. 1-1 Higashi, Tsukuba, Ibaraki 305, Japan. Phone: 81-298-54-6026. E-mail: shanada{at}nibh.go.jp.
ABSTRACT
A new thermophilic bacterium, strain OT3T (T = type strain), was isolated from a brackish hot spring. Strain OT3T is an obligate aerobe that synthesizes bacteriochlorophyll a and has a photosynthetic apparatus. This isolate is a thermophilic bacterium with an optimal growth temperature of 40 to 48°C. The cells are nonmotile, ovoid to short rods. An analysis of 16S rRNA sequences revealed that the new strain forms a coherent cluster with members of the 
-4 group of the subclass of the Proteobacteria, which contains the genera Erythrobacter, Erythromicrobium, and Porphyrobacter. The closest relative is Porphyrobacter neustonensis with a 16S rRNA sequence similarity of 96.8%. The in vivo absorption spectrum has maxima at 460, 494, 596, 800, and 870 nm. The main carotenoids are OH-β-carotene sulfate derivatives, nostoxanthin, and bacteriorubixanthinal. Growth occurs with glucose, acetate, glutamate, butyrate, Casamino Acids, and yeast extract as sole energy sources. The pigment composition and nutritional profile of the new isolate are similar to the pigment composition and nutritional profile of P. neustonensis. Although there are marked differences in cell morphology between the new isolate and the budding bacterium P. neustonensis, the results of phenotypic and genetic comparisons suggest that the new isolate is closely related to P. neustonensis. Consequently, we assign the new isolate to the genus Porphyrobacter and propose the name Porphyrobacter tepidarius sp. nov. for it; the type strain of P. tepidarius is strain OT3 (= DSM 10595).
This article has been cited by other articles:
|
|
 |
|
  L. Albuquerque, F. A. Rainey, M. F. Nobre, and M. S. da Costa Elioraea tepidiphila gen. nov., sp. nov., a slightly thermophilic member of the Alphaproteobacteria Int J Syst Evol Microbiol, April 1, 2008; 58(4): 773 - 778. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. K. Kwon, J.-H. Woo, S.-H. Yang, J.-H. Kang, S. G. Kang, S.-J. Kim, T. Sato, and C. Kato Altererythrobacter epoxidivorans gen. nov., sp. nov., an epoxide hydrolase-active, mesophilic marine bacterium isolated from cold-seep sediment, and reclassification of Erythrobacter luteolus Yoon et al. 2005 as Altererythrobacter luteolus comb. nov. Int J Syst Evol Microbiol, October 1, 2007; 57(10): 2207 - 2211. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.-H. Yoon, S.-J. Kang, M.-H. Lee, H. W. Oh, and T.-K. Oh Porphyrobacter dokdonensis sp. nov., isolated from sea water. Int J Syst Evol Microbiol, May 1, 2006; 56(Pt 5): 1079 - 1083. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J.-H. Yoon, M.-H. Lee, and T.-K. Oh Porphyrobacter donghaensis sp. nov., isolated from sea water of the East Sea in Korea Int J Syst Evol Microbiol, November 1, 2004; 54(6): 2231 - 2235. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. Tamaki, S. Hanada, Y. Kamagata, K. Nakamura, N. Nomura, K. Nakano, and M. Matsumura Flavobacterium limicola sp. nov., a psychrophilic, organic-polymer-degrading bacterium isolated from freshwater sediments Int J Syst Evol Microbiol, March 1, 2003; 53(2): 519 - 526. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. A. Rainey, J. Silva, M. F. Nobre, M. T. Silva, and M. S. da Costa Porphyrobacter cryptus sp. nov., a novel slightly thermophilic, aerobic, bacteriochlorophyll a-containing species Int J Syst Evol Microbiol, January 1, 2003; 53(1): 35 - 41. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 V. V. Yurkov, S. Krieger, E. Stackebrandt, and J. T. Beatty Citromicrobium bathyomarinum, a Novel Aerobic Bacterium Isolated from Deep-Sea Hydrothermal Vent Plume Waters That Contains Photosynthetic Pigment-Protein Complexes J. Bacteriol., August 1, 1999; 181(15): 4517 - 4525. [Abstract] [Full Text]
|
|
|
|
 |
|
 V. V. Yurkov and J. T. Beatty Aerobic Anoxygenic Phototrophic Bacteria Microbiol. Mol. Biol. Rev., September 1, 1998; 62(3): 695 - 724. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| INT J SYST EVOL MICROBIOL | MICROBIOLOGY | J GEN VIROL |
| J MED MICROBIOL | ALL SGM JOURNALS | |
