Results 61 to 70 of about 5,980,835 (209)

Cyanobacterial Acclimation to Photosystem I or Photosystem II Light [PDF]

open access: yesPlant Physiology, 1986
The organization and function of the photochemical apparatus of Synechococcus 6301 was investigated in cells grown under yellow and red light regimes. Broadband yellow illumination is absorbed preferentially by the phycobilisome (PBS) whereas red light is absorbed primarily by the chlorophyll (Chl) pigment beds.
A, Manodori, A, Melis
openaire   +2 more sources

Photosystem II function under extreme low light and low temperatures; polar vs. temperate phytoplankton

open access: yesFrontiers in Photobiology
Polar phytoplankton achieve slow, but ecologically significant, productivity under exceptionally low light, where the sequential arrivals of photons at Photosystem II complexes are widely spaced in time.
Mackenzie Poirier   +10 more
doaj   +1 more source

Photoinactivation of Photosystem II in leaves

open access: yesPhotosynthesis Research, 2005
Photoinactivation of Photosystem II (PS II), the light-induced loss of ability to evolve oxygen, inevitably occurs under any light environment in nature, counteracted by repair. Under certain conditions, the extent of photoinactivation of PS II depends on the photon exposure (light dosage, x), rather than the irradiance or duration of illumination per ...
Chow, Wah S (Fred)   +5 more
openaire   +3 more sources

Reconstructing the origin of oxygenic photosynthesis: do assembly and photoactivation recapitulate evolution?

open access: yesFrontiers in Plant Science, 2016
Due to the great abundance of genomes and protein structures that today span a broad diversity of organisms, now more than ever before, it is possible to reconstruct the molecular evolution of protein complexes at an incredible level of detail.
Tanai eCardona
doaj   +1 more source

Biochemische Charakterisierung von Photosystem-I-Komplexen aus Diatomeen [PDF]

open access: yes, 2009
Photosystem (PS) I is a huge membrane protein complex which coordinates around 200 co-factors. Upon light excitation a charge separation at the PS I reaction centre is induced which leads to an electron transport across the thylakoid membrane and the ...
Veith, Thomas
core  

Use of chlorophyll fluorescence and P700 absorbance to rapidly detect glyphosate resistance in goosegrass (Eleusine indica)

open access: yesJournal of Integrative Agriculture, 2015
The rapid detection of glyphosate resistance in goosegrass (Eleusine indica) will enhance our ability to respond to new resistant populations of this major weed.
Tai-jie ZHANG   +4 more
doaj   +1 more source

Special issue in honour of Prof. Reto J. Strasser - Influence of Cuscuta campestris Yunck. on the photosynthetic activity of Ipomoea tricolor Cav. - in vivo chlorophyll a fluorescence assessment

open access: yesPhotosynthetica, 2020
Cuscuta campestris Yunck. is a parasitic plant, acquiring nutrients from the hosts. Although a generalist, its hosts differ in their susceptibility. Ipomoea tricolor Cav. is a semi-compatible host - C.
L. ZAGORCHEV   +5 more
doaj   +1 more source

Light harvesting in photosystem II [PDF]

open access: yesPhotosynthesis Research, 2013
This review focuses on the light-harvesting properties of photosystem I (PSI) and its LHCI outer antenna. LHCI consists of different chlorophyll a/b binding proteins called Lhca's, surrounding the core of PSI. In total, the PSI-LHCI complex of higher plants contains 173 chlorophyll molecules, most of which are there to harvest sunlight energy and to ...
Croce, R., van Amerongen, H.
openaire   +5 more sources

Dimeric and high-resolution structures of Chlamydomonas Photosystem I from a temperature-sensitive Photosystem II mutant

open access: yesCommunications Biology, 2021
Caspy et al. report the structure of PSI from a temperature-sensitive photoautotrophic PSII mutant of Chlamydomonas reinhardtii (TSP4), and report the distribution of conserved water molecules in the structure from cyanobacterial to higher plant PSI ...
Ido Caspy   +6 more
doaj   +1 more source

Biochemical and biotechnological approaches as basis for structure determination of pigment-protein complexes of oxygenic photosynthesis [PDF]

open access: yes, 2009
Today the structure of photosystem II, which is the enzyme responsible for the evolution of molecular oxygen by plants, algae and cyanobacteria, is known up to a resolution of about 3.0 Å in cyanobacteria (Loll et al., 2005).
Fey, Holger
core  

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