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Jun Chen et al.
Water environment research : a research publication of the Water Environment Federation, 87(1), 44-51 (2015-01-30)
In this study, two sample semi-analytical algorithms and one new unified multi-band semi-analytical algorithm (UMSA) for estimating chlorophyll-a (Chla) concentration were constructed by specifying optimal wavelengths. The three sample semi-analytical algorithms, including the three-band semi-analytical algorithm (TSA), four-band semi-analytical algorithm
K Buonasera et al.
Analytical and bioanalytical chemistry, 401(4), 1139-1151 (2011-06-28)
Chlorophyll a fluorescence has been extensively studied over the last few years. As demonstrated, this phenomenon is closely related to the state of photosystem II, which plays a leading role in the photosynthetic process, and therefore it has become a
Natural iron enrichment around the Antarctic Peninsula in the Southern Ocean.
Biogeosciences (Online), 7, 11-25 (2010)
Elham Kamyab et al.
Marine drugs, 18(4) (2020-04-05)
Sea cucumbers are bottom dwelling invertebrates, which are mostly found on subtropical and tropical sea grass beds, sandy reef flats, or reef slopes. Although constantly exposed to fouling communities in these habitats, many species are surprisingly free of invertebrate epibionts
Gérard Bogé et al.
Marine pollution bulletin, 74(1), 413-419 (2013-07-28)
The activities of particulate and soluble phosphatase were analyzed monthly for 1 year in the coastal ecosystems of the NW Mediterranean Sea. The mean contribution of the particulate activity increased from 56% at an MUF-P concentration of 30 μM to
Gleixner, G., et al.
Experientia, 38, 303-303 (1982)
D P Singh et al.
PloS one, 8(1), e53445-e53445 (2013-02-06)
This study deals with anilofos tolerance and its mineralization by the common rice field cyanobacterium Synechocystis sp. strain PUPCCC 64. The organism tolerated anilofos up to 25 mg L(-1). The herbicide caused inhibitory effects on photosynthetic pigments of the test
Sunyoung Park et al.
Life sciences, 103(2), 59-67 (2014-04-17)
Microglia-mediated inflammation is associated with pathogenesis of various neuronal disorders. This study investigated inhibitory effects of pheophytin a (PP) and chlorophyll a (CP) on neuroinflammation and underlying cellular mechanisms in microglia cells. BV2 murine microglia cells were stimulated by lipopolysaccharide
Marilena Di Valentin et al.
Biochimica et biophysica acta, 1827(10), 1226-1234 (2013-07-17)
Although the major light harvesting complexes of diatoms, called FCPs (fucoxanthin chlorophyll a/c binding proteins), are related to the cab proteins of higher plants, the structures of these light harvesting protein complexes are much less characterized. Here, a structural/functional model
Mandar Sengupta et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 75, 44-49 (2013-03-05)
Effects of gamma rays on the free polyamine (PA) levels were studied in Vigna radiata (L.) Wilczek. Seeds exposed to different doses of gamma rays were checked for damage on phenotype, germination frequency and alteration in photosynthetic pigments. Free polyamine
Kym L Wells et al.
The journal of physical chemistry. B, 117(8), 2294-2299 (2013-02-02)
Ultrafast two-dimensional electronic spectroscopy has been used to study the spectral diffusion of the Qy transition of chlorophyll a in methanol. The two time frequency-fluctuation correlation function (FFCF) of the transition has been measured using the center line slope method
S Hena et al.
Water research, 80, 346-356 (2015-06-05)
Reserve lipids of microalgae are promising for biodiesel production. However, economically feasible and sustainable energy production from microalgae requires optimization of cultivation conditions for both biomass yield and lipid production of microalgae. Biomass yield and lipid production in microalgae are
Yohei Ikeda et al.
Biochimica et biophysica acta, 1827(4), 529-539 (2013-02-19)
Intact fucoxanthin (Fucox)-chlorophyll (Chl)-binding protein I-photosystem I supercomplexes (FCPI-PSIs) were prepared by a newly developed simple fast procedure from centric diatoms Chaetoceros gracilis and Thalassiosira pseudonana to study the mechanism of their efficient solar energy accumulation. FCPI-PSI purified from C.
Thiago André Moura Veiga et al.
Journal of photochemistry and photobiology. B, Biology, 120, 36-43 (2013-02-19)
In the search for natural inhibitors of plant growth, we investigate the mechanism of action of the natural furoquinoline alkaloids isolated from Balfourodendron riedelianum (Rutaceae): evolitrine (1), kokusaginine (2), γ-fagarine (3), skimmianine (4) and maculosidine (5) on the photosynthesis light
Donatella Carbonera et al.
Biochimica et biophysica acta, 1837(8), 1235-1246 (2014-04-08)
Violaxanthin-chlorophyll a binding protein (VCP) is the major light harvesting complex (LHC) of the Heterokonta Nannochloropsis gaditana. It binds chlorophyll a, violaxanthin and vaucheriaxanthin, the last in the form of 19' deca/octanoate esters. Photosynthetic apparatus of algae belonging to this
Lei Zhao et al.
Environmental pollution (Barking, Essex : 1987), 177, 13-21 (2013-03-05)
Lake Yilong in Southwestern China has been under serious eutrophication threat during the past decades; however, the lake water remained clear until sudden sharp increase in Chlorophyll a (Chl a) and turbidity in 2009 without apparent change in external loading
Kenneth L Smith et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(49), 19838-19841 (2013-11-13)
The deep ocean, covering a vast expanse of the globe, relies almost exclusively on a food supply originating from primary production in surface waters. With well-documented warming of oceanic surface waters and conflicting reports of increasing and decreasing primary production
Bjorn LO
Photobiology: The Science of Life and Light (2007)
Kimberly A Prather et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(19), 7550-7555 (2013-04-27)
The production, size, and chemical composition of sea spray aerosol (SSA) particles strongly depend on seawater chemistry, which is controlled by physical, chemical, and biological processes. Despite decades of studies in marine environments, a direct relationship has yet to be
Patrick C Friesen et al.
Journal of experimental botany, 66(14), 4403-4413 (2015-04-16)
Miscanthus × giganteus grown in cool temperate regions of North America and Europe can exhibit severe mortality in the year after planting, and poor frost tolerance of leaves. Spartina pectinata (prairie cordgrass), a productive C4 perennial grass native to North
Zhen He et al.
Environmental pollution (Barking, Essex : 1987), 177, 28-37 (2013-03-08)
Halocarbons including chloroform (CHCl3), trichloroethylene (C2HCl3), tetrachloroethylene (C2Cl4), chlorodibromomethane (CHBr2Cl) and bromoform (CHBr3) were measured in the Yellow Sea (YS) and the East China Sea (ECS) during spring 2011. The influences of chlorophyll a, salinity and nutrients on the distributions
Alexandrina Stirbet et al.
Journal of photochemistry and photobiology. B, Biology, 104(1-2), 236-257 (2011-02-08)
Chlorophyll a fluorescence is a highly sensitive, non-destructive, and reliable tool for measuring, rather quickly, photosynthetic efficiency, particularly of Photosystem II (PSII), the water-plastoquinone oxidoreductase. We briefly review here the connection between the fast (up to 2 s) chlorophyll fluorescence
Gert Everaert et al.
Environmental science & technology, 49(14), 8704-8711 (2015-06-17)
We analyzed three decades of field observations in the North Sea with additive models to infer spatiotemporal trends of chlorophyll a concentration, sediment organic carbon content, and polychlorinated biphenyls (PCBs) concentrations in mussels and sediments. By doing so, we separated
Katherina Petrou et al.
Biochimica et biophysica acta, 1837(9), 1533-1539 (2013-12-11)
Here we show how the protein environment in terms of detergent concentration/protein aggregation state, affects the sensitivity to pH of isolated, native LHCII, in terms of chlorophyll fluorescence quenching. Three detergent concentrations (200, 20 and 6μM n-dodecyl β-d-maltoside) have been
Monique Boutsivongsakd et al.
Journal of toxicology and environmental health. Part A, 78(3), 196-214 (2014-12-17)
Previous studies reported (15)N enrichment of biota in reclamation wetlands that contain oil sands processed material (e.g., processed water and tailings); however, there is little information on the factors controlling (15)N enrichment in these systems. In this microcosm study, the
Dilek Eren Akyuz et al.
Environmental monitoring and assessment, 186(6), 3891-3904 (2014-03-07)
Interpretations of state and trends in lake water quality are generally based on measurements from one or more stations that are considered representative of the response of the lake ecosystem. The objective of this study is to examine how these
Matyas Meggyes et al.
Placenta, 36(10), 1153-1160 (2015-08-19)
Immunoregulation implies the activation of negative pathways leading to the modulation of specific immune responses. Co-inhibitory receptors (such as PD-1 and TIM-3) represent possible tools for this purpose. PD-1 and TIM-3 have been demonstrated to be present on immune cells
Whitney D Hollinshead et al.
Bioresource technology, 169, 462-467 (2014-08-02)
Anaerobic digestion (AD) is an environmentally friendly approach to waste treatment, which can generate N and P-rich effluents that can be used as nutrient sources for microalgal cultivations. Modifications of AD processes to inhibit methanogenesis leads to the accumulation of
Norbert Kamjunke et al.
Environmental monitoring and assessment, 185(11), 9221-9236 (2013-06-20)
The Bode catchment (Germany) shows strong land use gradients from forested parts of the National Park (23% of total land cover) to agricultural (70%) and urbanised areas (7%). It is part of the Terrestrial Environmental Observatories of the German Helmholtz
Andrea Vannini et al.
Ecotoxicology and environmental safety, 122, 193-197 (2015-08-08)
This study investigated if treatment of the lichen Xanthoria parietina (L.) Th. Fr. with glyphosate caused uptake of this herbicide as well as physiological alterations. Samples were treated with Glifene SL®, a common commercial glyphosate-based herbicide, at the lowest recommended
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