نتایج جستجو برای: green algae

تعداد نتایج: 154189  

2001
MELODY J. KEMP WALTER K. DODDS

Dissolved oxygen (O2) was measured with microelectrodes in shallow subsurface microsites in a prairie stream and related to rates of nitrification determined in the laboratory using the nitrapyrin method. Substrata sampled included diatom mats, leaves and wood (coarse benthic organic matter, CBOM), filamentous green algae, bryophytes, and fine benthic organic matter (FBOM). Significant differen...

2009
Krishanu Mukherjee Luciano Brocchieri Thomas R. Bürglin

The full complement of homeobox transcription factor sequences, including genes and pseudogenes, was determined from the analysis of 10 complete genomes from flowering plants, moss, Selaginella, unicellular green algae, and red algae. Our exhaustive genome-wide searches resulted in the discovery in each class of a greater number of homeobox genes than previously reported. All homeobox genes can...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2010
Kanami Irie Shunsuke Furukawa Takashi Kadono Tomonori Kawano

Some hundred cells of Chlorella-like green algae are naturally enclosed within the cytoplasm of a single cell of green paramecia (Paramecium bursaria). Therefore, P. bursaria serves as an experimental model for studying the nature of endo-symbiosis made up through chemical communication between the symbiotic partners. For studying the mechanism of symbiotic regulations, the materials showing su...

Journal: :Environmental toxicology and pharmacology 2009
Adam Latała Marcin Nędzi Piotr Stepnowski

The presence of high-energy carbon-fluorine bonds in perfluoro compounds lends them great stability and causes them to be environmentally persistent. Relatively little is known about the acute toxicity of perfluorinated carboxylic acids (PFCAs) to ecotoxicological markers such as aquatic plants and animals. This study tested the toxicity of these compounds to the green alga Chlorella vulgaris, ...

2016
Weishu Fan Jeffrey P. Mower

Endosymbiotic bacteria have been reported with extraordinary reduced genome in numerous cases. Many endosymbiotic green algae also show extreme genomic reduction of their nuclear genomes, but they may retain a fully functional plastid genome if they maintain photosynthetic ability or if they can survive outside of their host. In order to better understand how the endosymbiotic lifestyle has aff...

Journal: :Journal of general microbiology 1967
J Pearce N G Carr

The utilization of acetate by blue-green algae was examined and the activities of enzymes involved in its metabolism measured. Although acetate did not stimulate the endogenous respiration of these organisms, the oxidation of acetate was followed by the rate of release of [14C] carbon dioxide from [I-~~CC] and [2-l4CC] sodium acetate. Similarly, sodium acetate did not alter the rate of growth o...

Journal: :Journal of cell science 1986
P J McAuley

Regression analysis of the relationship between the size of interphase and mitotic digestive cells of green hydra, and the numbers and total volume of the symbiotic Chlorella algae they contain showed a partial correlation only, suggesting that numbers of algae per cell are not regulated by limiting them to a specific proportion of the host cell, and that the variation observed in numbers of al...

2013
Hermann Bothe Liliane Floener

Culture conditions are described under which Cyanophora paradoxa grows with a generation time of less than two days. The organism is an obligate photoautotrophic flagellate unable to degrade exogenous carbohydrates via respiration. It does not synthesize nitrogenase but can form a hydrogenase with similar properties as in blue-green algae. The photosynthetic 0 2-evolution pro­ ceeds with essent...

Journal: :Food & function 2015
Peter I Chater Matthew D Wilcox David Houghton Jeffrey P Pearson

Seaweeds are an underutilised nutritional resource that could not only compliment the current western diet but potentially bring additional health benefits over and above their nutritional value. There are four groups of seaweed algae; green algae (Chlorophyceae), red algae (Rhodophycae), blue-green algae (Cyanophyceae) and brown algae (Phaeophyceae). Seaweeds are rich in bioactive components i...

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