Query : photosynthesis
- Environmental studies1254
- Communication Sciences56
- Art and Art History47
- Methods and Statistics45
- Social Anthropology and Ethnology28
- Political Science27
- Archaeology and Prehistory21
- Architecture and Space Management21
- Biological Anthropology10
- History, Philosophy and Sociology of Sciences7
- Musicology and Performing Arts6
- Cultural Heritage and Museology3
- Economies and Finances2
- Classical Studies1
- Blog Post5
- erika j edwards12
- johann lavaud12
- hermenegildo garcia gomez10
- pascal-antoine christin10
- colin p osborne9
- n salamin9
- philippe ciais9
- sergio gonzalez nebauer9
- g besnard8
- angeles calatayud7
- antonio granell richart7
- dominique davoult7
- jean-francois maguer7
- pa christin7
- christine ferrier-pages6
- francisco hevilasio freire pereira6
- guillaume besnard6
- jaime prohens tomas6
- monica boscaiu6
- oscar vicente6
Conditions of Access
- Open Access348
- All Rights Reserved75
- Restricted Access or Use64
- Closed Access26
- Embargoed Access7
- Free Access3
- Creative Commons319
Atmospheric sulfur rearrangement 2.7 billion years ago: evidence for oxygenic photosynthesis.
International audience Mass-independently fractionated sulfur isotopes (MIF-S) provide strong evidence for an anoxic atmosphere during the Archean. Moreover, the temporal evolution of MIF-S shows increasing magnitudes between 2.7 and 2.5 Ga until the start of the Great Oxidation Event (G.O.E.) at ar...
High-reflective Mulching Membrane for a Sustainable Development: Monitoring Campaign
Modern agriculture techniques are responsible for the production of large volumes of greenhouse gases that represent the main cause of climate change. At the same time, agricultural activities are negatively affected by climate change effects, showing a reduction in productivity. Within this framewo...
Observations of late-winter marine microbial activity in an ice-covered fjord, west Greenland
Direct observations of marine microbial metabolism are sparse in the Arctic, particularly under sea ice during winter. This paper presents the first observations of Arctic winter microbial activity under sea ice in a west Greenland fjord (Lillefjord, ∼ 70∘ N). Here, measured changes in dissolved oxy...
Impact of annotation ans sequence evolution model on phylogenomics : application to the study of photosynthetic eukaryotes
Oxygen has shaped life on Earth. Enriching its gaseous form in water then in the atmosphere has allowed the development of multicellular and terrestrial life leading to current biodiversity. This could have taken place thanks to the implementation of the process of the oxidative photosynthesis in li...
Photosynthesis of an endolithic Chlorococcum alga (Chlorophyta, Chlorococcaceae) from travertine calcium carbonate rocks of a tropical limestone Spring
A green alga, Chlorococcum sp. (Chlorococcales, Chlorophyceae), was grown from scrapings of the travertine rocks from the outlet stream of the Emerald Pool, Khlong Thom Nuea, Khlong Thom District Krabi province in Southern Thailand – a classic karstic stream habitat. It was a recalcitrant alga: orga...
Look at these search results from a different perspective
Photosynthetic response to light and temperature in Laminaria digitata gametophytes from two French populations
International audience Given the growing body of evidence on the general decline of kelp beds worldwide, it is crucial to understand the physiological responses of kelp gametophyte stages to environmental parameters. We investigated the physiological responses to light and temperature of gametophyte...
Writing in science education: authors of basic education
Apresentamos resultados de uma pesquisa sobre a escrita como possibilidade de expressão do pensamento dos alunos em aulas de ciências, no final de uma proposta de ensino com o tema Fotossíntese. O referencial de apoio é a análise do discurso em trabalhos de Eni Orlandi, com ênfase na noção de autori...
Cell Wall Remodeling in Abscission Zone Cells during Ethylene-Promoted Fruit Abscission in Citrus
Optical effect of dissolved coloured organic matter on primary production in Nordic estuary systems: quality, quantity and climate change
Dans les régions nordiques, les changements climatiques sur les milieux terrestres auront des conséquences encore peu connues sur les écosystèmes aquatiques. La fonte du pergélisol et le changement de la composition végétale auront pour effets de libérer des concentrations élevées de matière organiq...
Drought tolerance in Pinus halepensis seed sources as identified by distinctive physiological and molecular markers
Food production and Earth’s limits to growth in the Anthropocene
First paragraph: Agriculture is the human activity that is acting as a major planetary force in the Anthropocene. Although the authors of Breaking Boundaries: The Science of Our Planet dedicated only one chapter to food production (Chapter 11), they contended that four of the nine planetary boundari...
Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core
The productivity of the biosphere leaves its imprint on the isotopic composition of atmospheric oxygen. Ultimately, atmospheric oxygen, through photosynthesis, originates from seawater. Fractionations during the passage from seawater to atmospheric O2 and during respiration affect δ17O approximately...
The Challenge of Iron Stress in Cyanobacteria
Iron is an essential nutrient for most living organisms. Due to the low solubility of ferric iron at physiological pH, the transition from an anaerobic atmosphere to the actual oxidant environment caused a dramatical decrease of iron bioavailability. Therefore, most organisms had to adapt their life...
Interaction Between Flowering Initiation and Photosynthesis
Interaction Between Flowering Initiation and Photosynthesis
Influence of abiotic factors on CO2-gas exchange of Pinus pallasiana, Juniperus excelsa and Arbutus andrachne
The complex interactions among environmental factors as incident light, temperature and soil water content create the need for used physiology-based models which describe plants performance under current and changing climatic conditions. In the present work the net photosynthetic rate of Pinus palla...
A Theoretical Approach to Guiding Biotechnological Improvement of Crop Photosynthetic Efficiency
Iron-Marine Algal Interactions and Impacts: Decreasing Global Warming by Increasing Algal Biomass
Iron limitation in vast water bodies has been linked to decreased algal productivity, despite different iron-acquiring mechanisms, and the presence of ferritin in many algal species that act as an iron internal reservoir. Therefore, iron fertilization has been proposed to increase algal biomass and...
How mushrooms tend to break through the evolutionary dead end
Genes, genetics, genomics, and the roles of mushrooms and toadstools in the global carbon cycle (GCC) are reviewed here. The literature survey is a tribute to the contributions made by Hungary and Hungarian scientists to fungi and mushroom research. For this reason, the names of the fungi discussed...
A intermediate concentration of atmospheric nitrogen dioxide enhances PSII activity and inhibits PSI activity in expanded leaves of tobacco seedlings
Nitrogen dioxide (NO2) is a major air pollutant that affects plant growth, development and yields. Previous studies have found that atmospheric NO2 changes plant photosynthesis in a concentration-dependent manner. Low concentrations of NO2 (4.0 μL L−1) can increase photosynthetic rates, while high c...
Physiological responses of inoculated and uninoculated peanuts under saline stress
This work evaluated the effects of water salinity on the physiological indices in inoculated and non-inoculated peanut plants. The study was carried out in a protected environment at the seedling production unit (UPMA) at Campus das Auroras, at the University for International Integration of the Afr...
Sensitivity analysis of an ocean carbon cycle model in the North Atlantic: an investigation of parameters affecting the air-sea CO2 flux, primary production and export of detritus
The sensitivity of the biological parameters in a nutrient-phytoplankton-zooplankton-detritus (NPZD) model in the calculation of the air-sea CO2 flux, primary production and detrital export is analysed. We explore the effect on these outputs of variation in the values of the twenty parameters that c...
Eddy-covariance CO2 fluxes over Itaipu lake, southern Brazil
ABSTRACT In this work, we present CO2, latent heat and sensible heat fluxes measured over the reservoir of the Itaipu Hydroelectric Power Plant (Paraná State, Brazil) during 2013. A tower was installed at a small island in the reservoir, where an Eddy Covariance system, with supplementary equipments...
A genetic suppressor approach to the biogenesis, quality control and function of photosynthetic complexes in Chlamydomonas reinhardtii
Central in oxygenic photosynthesis, the cytochrome b6f complex, couples electron transfer to proton translocation across the thylakoid membrane via its quinol:plastocyanin oxidoreductase activity, contributing to ATP formation. Cytochrome b6f complex differs from its respiratory homolog, the bc1 com...
Evaluation of the taxonomic and functional variation of freshwater plankton communities induced by trace amounts of the antibiotic ciprofloxacin
Ciprofloxacin (CIP), one of the most frequently detected antibiotics in water systems, has become an aquatic contaminant because of improper disposal and excretion by humans and animals. It is still unknown how trace amounts of CIP affect the aquatic microbial community diversity and function. We th...
Elevated CO2 Did Not Stimulate Stem Growth in 11 Provenances of a Globally Important Hardwood Plantation Species
Elevated atmospheric carbon dioxide (eCO2) often enhances rates of photosynthesis leading to increased productivity in trees. In their native habitats in Australia, eucalypts display considerable phenotypic plasticity in response to changes in environmental conditions. Little is known whether this p...