Photosynthetic oscillation in individual cells of the marine diatom Coscinodiscus wailesii (Bacillariophyceae) revealed by microsensor measurements.
Oscillations with a period of 1-2 min in the rate of photosynthesis have been found in leaves of C(3 )and C(4 )land plants under invariant, saturating, light and carbon dioxide. This article reports the occurrence of similar oscillations with a period of 2-2.5 min in individual cells of the marine diatom Coscinodiscus wailesii. These oscillations were determined by measurements of both oxygen (oxygen microelectrode) and carbon dioxide (pH microelectrode) just outside the plasmalemma. These oscillations were found in less than 1% of the cells examined. The occurrence of oscillations in unicelluar diatoms rules out for these organisms hypotheses as to the origin of oscillations in land plant leaves that are based on cell-cell interactions.
Kühn
Stefanie F
SF
Marine Botany (FB2), University of Bremen, PO Box 330 440, 28334, Bremen, Germany. skuehn@uni-bremen.de
Raven
John A
JA
D002245:Carbon Dioxide / Q000032:analysis*; D017377:Diatoms / Q000166:cytology* / Q000378:metabolism* / Q000528:radiation effects; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000032:analysis* / Q000378:metabolism; D010788:Photosynthesis / Q000528:radiation effects
D002245:Carbon Dioxide; D010100:Oxygen
Photosynth Res. 1995 Sep;45(3):225-37
24301534
Photosynth Res. 2005 Jun;84(1-3):113-20
16049763
Biochem Biophys Res Commun. 1969 Nov 20;37(5):785-92
5353091
Planta. 1992 Mar;186(4):526-31
24186782
Photochem Photobiol. 2002 Nov;76(5):501-8
12462644
Can J Microbiol. 1962 Apr;8:229-39
13902807
Planta. 1991 Nov;185(4):554-62
24186534
Microbiol Mol Biol Rev. 2004 Sep;68(3):538-59, table of contents
15353569
Photosynth Res. 2007 Jul-Sep;93(1-3):79-88
17497225
Plant Physiol. 2007 Sep;145(1):230-5
17644625
Biosystems. 1995;35(1):63-73
7772723
Environ Sci Technol. 2004 Aug 1;38(15):4165-8
15352456
Chronobiol Int. 2004 Jan;21(1):27-41
15129822
J Theor Biol. 1998 Nov 21;195(2):233-44
9822565
Mar Biol. 2008;154(1):109-116
24391233