+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Photosynthetic characteristics of marine Synechococcus spp. with special reference to light environments near the bottom of the euphotic zone of the open ocean

, : Photosynthetic characteristics of marine Synechococcus spp. with special reference to light environments near the bottom of the euphotic zone of the open ocean. Marine Biology (Berlin) 118(2): 215-221

The present study aimed to resolve the question why marine Synechococcus spp. abundantly occur even at the bottom of the euphotic zone in the Kuroshio area. Photosynthesis under such conditions was examined using simulated blue-green model light (BGL). Results indicated that photosynthesis of marine Synechococcus spp. under BGL is as active enough to support growth of these organisms. Examination of light-harvesting under BGL indicated that active photosynthesis is permitted by an unusually high abundance of phycoerythrin (PE), which is the main light-harvesting pigment of photosystem II (PSII), due to a phycobilisome (PBS) structure which is different from ordinary hemidiscoidals. Although the absorption maximum of PE is located at longer wavelengths than the energy maximum of BGL, PE was found to absorb BGL significantly. Thus, BGL cannot be a typical photosystem I (PSI) light. PSII is also significantly excited by BGL. Carotenoids, which largely absorb BGL, were found to be effective in light-harvesting for PSI. Based on the results obtained, possible reasons why marine Synechococcus spp. commonly occur in warm waters were discussed. Two strains of Synechococcus spp. isolated form the Gulf Stream in 1981 and from Kuroshio, Japan in 1983 were used in present study.


DOI: 10.1007/bf00349787

Other references

Pierce, S.R.; Gallagher, K.G.; Schaumburg, S.W.; Gershkoff, A.M.; Gaughan, J.P.; Shutter, L., 2003: Home forced use in an outpatient rehabilitation program for adults with hemiplegia: a pilot study. The objective of this study was to examine the effectiveness of a program of traditional outpatient neurological rehabilitation that included home forced use. In total, 17 patients with chronic stroke and 1 patient with subacute stroke (mean time...

Colpron Maurice; Logan James M.; Mortensen James K., 2002: U-Pb zircon age constraint for late Neoproterozoic rifting and initiation of the lower Paleozoic passive margin of western Laurentia. A concordant U-Pb zircon age of 569.6+ or -5.3 Ma from synrift volcanic rocks of the Hamill Group, southeastern Canadian Cordillera, provides the first direct U-Pb geochronologic constraint on timing of latest Neoproterozoic rifting along western...

Lin, P-Keng.; Fu, C-Cheng.; Chen, Y-L.; Chen, Y-Ru.; Wei, P-Kuen.; Kuan, C.H.; Fann, W.S., 2007: Static conformation and dynamics of single DNA molecules confined in nanoslits. Nearly thirty years ago, Daoud and de Gennes derived the scaling predictions for the linear polymer chains trapped in a slit with dimension close to the Kuhn length; however, these predictions have yet to be compared with experiments. We have fabr...

Dorofeev, Pi, 1972: Tertiary flora of the Omoloi Basin. Istoriia Flory i Rastitel"nosti Evrazii: 1-112

Monteleone, I.; Monteleone, G.; Del Vecchio Blanco, G.; Vavassori, P.; Cucchiara, S.; MacDonald, T.T.; Pallone, F., 2004: Regulation of the T helper cell type 1 transcription factor T-bet in coeliac disease mucosa. Background: In coeliac disease ( CD) mucosa, the histological lesion is associated with marked infiltration of T helper cell type 1 (Th1) cells. However, the molecular mechanisms which regulate Th1 cell differentiation in CD mucosa are unknown. Ai...

Clement, P.; Amsellem, J.; Cornillac, A.-M.; Luciani, A.; Ricci, C., 1980: A ultrastructural approach to feeding behaviour in Philodina roseola and Brachionus calyciflorus rotifers 2 The oesophagus. Hydrobiologia 73.1-3: 133-136

Srimannarayana, J.; Varma, R.Sekhar.; Satheesh, S.; Anilkumar, R.; Balachander, J., 2004: Transvenous permanent pacemaker implantation through persistent left superior vena cava. Permanent pacemaker implantation in patients with persistent left superior vena cava and absent right superior vena cava is a technically challenging procedure with conventional methods. We report the successful use of an atrial 'J' stil...

Santi, L.; Benedetti Roncalli, L.; Castellaro, M., 1964: Considerations on relations between Ollier's dyschondroplasia, chondromatosis and exostosis disease. Il Cancro 17(5): 387-413

Rossi, Adolfo., 1909: Materiali per una Fauna aracnologica della provincia di Roma. Chernetes (Pseudoscorpioni). Firenze Bollettino della Societa Entomologica, 40(1908): 182-194

Wang, A.; Wolf, M.; Carlyle, R.; Wilkerson, J.; Porterfield, D.; Reaves, J., 2004: The North Carolina experience with the diabetes health disparities collaboratives. The Bureau of Primary Health Care (BPHC) adopted a collaborative approach that used the Chronic Care Model and quality improvement methods. The North Carolina Diabetes Prevention and Control Branch has partnered with the 12 participating community...