Results 91 to 100 of about 1,383 (182)

Single-Cell View of Carbon and Nitrogen Acquisition in the Mixotrophic Alga Prymnesium parvum (Haptophyta) Inferred From Stable Isotope Tracers and NanoSIMS

open access: yesFrontiers in Marine Science, 2018
Nutritional modes of unicellular eukaryotes range from pure photoautotrophy of some phytoplankton to pure heterotrophy of species typically called protozoa.
Kevin J. Carpenter   +5 more
doaj   +1 more source

Undocumented potential for primary productivity in a globally-distributed bacterial photoautotroph

open access: yes, 2017
Aerobic anoxygenic phototrophs (AAnPs) are common in the global oceans and are associated with photoheterotrophic activity. To date, AAnPs have not been identified in the surface ocean that possess the potential for carbon fixation. Using the Tara Oceans
J.F. Heidelberg, E.D. Graham, B.J. Tully
core   +1 more source

The paleobiological record of photosynthesis [PDF]

open access: yes, 2010
Fossil evidence of photosynthesis, documented in Precambrian sediments by microbially laminated stromatolites, cyanobacterial microscopic fossils, and carbon isotopic data consistent with the presence of Rubisco-mediated CO2-fixation, extends from the ...
J. William Schopf, William Schopf, J
core   +1 more source

Variability in Radiocarbon Ages of Individual Organic Compounds from Marine Sediments [PDF]

open access: yes, 1997
Organic carbon (OC) from multiple sources can be delivered contemporaneously to aquatic sediments. The influence of different OC inputs on carbon-14-based sediment chronologies is illustrated in the carbon-14 ages of purified, source-specific (biomarker)
T. I. Eglinton   +6 more
core   +1 more source

Effects of Light, Carbon Dioxide, and Hormone Levels on Transformation To Photoautotrophy of Sugarcane Shoots in Micropropagation

open access: yes, 2000
Sugarcane (Saccharum spp.) shoots were transferred from a heterotrophic micropropagation environment and cultured on sugar-free Murashige and Skoog (MS) salts medium in the controlled atmosphere of a growth chamber.
Walker, Paul N., Ertürk, Handan
core  

Identification of two genes, sll0804 and slr1306, as putative components of the CO\u3csub\u3e2\u3c/sub\u3e-concentrating mechanism in the cyanobacterium Synechocystis sp. strain PCC 6803 [PDF]

open access: yes, 2008
Insertional transposon mutations in the sll0804 and slr1306 genes were found to lead to a loss of optimal photoautotrophy in the cyanobacterium Synechocystis sp. strain PCC 6803 grown under ambient CO2 concentrations (350 ppm).
Spann, Kevin W.   +4 more
core   +1 more source

Bacterial community in biological soil crusts from a Brazilian semiarid region under desertification process [PDF]

open access: yesScientia Agricola
Biological soil crusts (BSC) are commonly found in soils in the drylands regions, which can influence stabilization, water retention, nutrient cycling (particularly carbon (C) and nitrogen (N) dynamics), and several ecological processes.
José Israel Pinheiro   +8 more
doaj   +1 more source

Chloroplast Redox Imbalance Governs Phenotypic Plasticity: the Grand Design of Photosynthesis Revisited

open access: yesFrontiers in Plant Science, 2012
Sunlight, the ultimate energy source for life on our planet, enters the biosphere as a direct consequence of the evolution of photoautotrophy. Photoautotrophs must balance the light energy absorbed and trapped through extremely fast, temperature ...
Norman eHuner   +6 more
doaj   +1 more source

Table_1_Contrasting Soil Bacterial Community, Diversity, and Function in Two Forests in China.XLSX

open access: yes, 2018
Bacteria are the highest abundant microorganisms in the soil. To investigate bacteria community structures, diversity, and functions, contrasting them in four different seasons all the year round with/within two different forest type soils of China.
Xiaojing Liu (1282134)   +13 more
core   +1 more source

Effect of sucrose level in the nutrient medium at the elongation stage on the rooting ability of in vitro apple rootstock M 26 (Malus domestica Borkh)

open access: yesРастениевъдни науки, 2014
The aim of the present research is to observe the effect of sucrose level (0 – 6%) in the nutrient medium at the elongation stage on the rooting ability of in vitro cultivated apple rootstock M 26 (Malus domestica Borkh).
Lilyana Nacheva
doaj  

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