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Photophysiological Parameters

Range	Table - link
Organism	Cyanobacteria
Reference	Zorz JK et al., The RUBISCO to Photosystem II Ratio Limits the Maximum Photosynthetic Rate in Picocyanobacteria. Life (Basel). 2015 Feb 45(1):403-17. doi: 10.3390/life5010403. p.409 table 1PubMed ID25658887
Method	p.409 2nd paragraph:"To probe possible functional consequences of the different PSU [photosynthetic unit] stoichiometries, PSII [photosystem II] function and electron transport measurements were made by Fast Repetition Rate (FRR) Chlorophyll Fluorescence, summarized in Table 1. The functional absorption cross sections (sPSII) for blue light for the strains are similar, ranging from 306.8 ± 13.9 to 340.5 ± 16.7 Å^2/PSII. The marine Synechococcus, however, shows a higher maximum PSII electron transport rate, a bigger electron transport capacity for re-oxidation of PSII after a saturating flash and a higher EK than the Prochlorococcus strains."
Comments	p.408 bottom paragraph:"As the photosynthetic proteins are only found in the cyanobacterial cells, [investigators] are able to confidently report the molar stoichiometries of the protein complexes (see Table 1)." sPSII=functional absorption cross section. ETR=Electron Transport Rate. EK=the light level at the transition from the light limited to the light saturated regions of the light response curve and I is the instantaneous light level. cytb6f=cytochrome b6f.
Entered by	Uri M
ID	111685