Marine bacterioplankton

However, one has to bear in mind that the microbial ecology of marine habitats has been revolutionized by cultivation-independent analyses based on 16S rRNA. It is now well documented that only a fraction of the marine microbial diversity has been cultivated, presumably far less than 1% [17], no more than the tip of the iceberg [18]. Clone fibraries of marine bacterioplankton 16S rRNA genes are dominated by a few phylotypes that have not been cultivated to date, and which are distributed globally [19,20]. It can therefore be concluded that the true marine microorganisms are in most cases presently not known. 

Kiene, R. P., L. J. Linn, J. Gonzalez, M. A. Moran, and J. A. Bruton. 1999. Dimethyl-sulphoniopropoinate and methanethiol are important precursors of methionine and protein-sulfur in marine bacterioplankton. Applied and Environmental Microbiology 65 4549-4558. 

Obernosterer, I., B. Reitner, and G. J. Herndl. 1999. Contrasting effects of solar radiation on dissolved organic matter and its bioavailability to marine bacterioplankton. Limnology and Oceanography 44 1645—1654. 

Middelboe, M., N. O. G. Jorgensen, and N. Kroer. 1996. Effects of viruses on nutrient turnover and growth efficiency of noninfected marine bacterioplankton. Applied and Environmental Microbiology 62 1991-1997. 

Stoderegger, K., and Hemdl, G. J. (1998). Production and release ofbacterial capsular material and its subsequent utilization by marine bacterioplankton. Limnology and Oceanography 43(5), 877—884. 

Schuster, S., Arrieta, J., and Hemdl, G. (1998). Adsorption of dissolved free amino acids on colloidal DOM enhances coUoidal DOM utilization but reduces amino acid uptake by orders of magnitude in marine bacterioplankton. Mar. Ecol. Prog. Ser. 166, 99—108. 

Sekar, R., Fuchs, B., Amann, R., and Pernthaler, J. (2004). Flow sorting of marine bacterioplankton after fluorescence in situ hybridization. Appl. Environ. Microbiol. 70, 6210-6219. 

Stepanauskas, R., Leonardson, L., andTranvik, L.J. (1999b). Bioavailability ofwedand-derived DON to freshwater and marine bacterioplankton. Limnol. Oceanogr. 44, 1477—1485. 

Choi, J. W., Sherr, B. F., and Sherr, E. B. (1999). Dead or alive A large fraction of ETS-inactive marine bacterioplankton cells, as assessed by reduction of CTC, can become ETS-active with incubation and substrate addition. Aquat. Microb. Ecol. 18, 105—115. 

Karner, M. B., and Puhrman, J. A. (1997). Determination of active marine bacterioplankton A comparison of universal 16S rRNA probes, autoradiography, and nucleoid staining. Appl. Environ. Microbiol. 63, 1208-1213. 

In Microbial Ecology of the Oceans Kirchman, D. L. (ed.). Wdey-Liss, New York. pp. 153—200. Lee, S., and Fuhrman, J. A. (1987). Relationships between biovolume and biomass of naturally derived marine bacterioplankton. Appl. Environ. Microbiol. 53, 1298—1303. 

Moeseneder, M. M., Arrieta, J. M., Muyzer, G., Winter, C., andHemdl, G.J. (1999). Optimization of terminal-restriction fragment length polymorphism analysis for complex marine bacterioplankton communities and comparison with denaturing gradient gel electrophoresis. Appl. Environ. Microbiol. 65, 3518-3525. 

McCormack, P., Worsfold, P. J., and Gledhill, M. (2003). Separation and detection of siderophores produced by marine bacterioplankton using high-performance hquid chromatography with electrospray ionization mass spectrometry. Anal. Chem. 75, 2647—2652. 

Weaver, R. S., Kirchman, D. L., and Hutchins, D. A. (2003). Utilization of iron/organic ligand complexes by marine bacterioplankton. Aquat. Microh. Ecol. 31, 227-239. 

W.H. Jeffrey, P. Aas, M.M. Lyons, R.B. Coffin, R.J. Pledger, D.L. Mitchell (1996). Ambient solar-radiation induced photodamage in marine bacterioplankton. Photochem. Photobiol, 64,419-427. 

E. Kaiser, G.J. Herndl (1997). Rapid recovery of marine bacterioplankton activity after inhibition by UV radiation in coastal waters. Appl Environ. Microbiol, 63, 4026-4031. 

R. Sommaruga, I. Obernosterer, G.J. Herndl, R. Psenner (1997). Inhibitory effect of solar radiation on thymidine and leucine incorporation by freshwater and marine bacterioplankton. Appl. Environ. Microbiol, 63,4178-4184. 

Obernosterer, L, R. Sempere, and G. J. Herndl. 2001. Ultraviolet radiation induces reversal of the bioavailability of DOM to marine bacterioplankton. Aquat. Microb. Ecol. 24(l) 61-68. 

Well-separated spectra were recorded for C, N-proteorhodopsin (PR), which is also a retinal protein from marine bacterioplanktons, from 2D crystals mainly formed by PR hexamer in DOPC bilayer [251—253]. 

Kramer, G.D. and Hemdl, G.J. (2004). Photo- and bioreactivity of chromophoric dissolved organic matter produced by marine bacterioplankton. Aquat. Microb. Ecol, 36(3), 239-246. 

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