Results 131 to 140 of about 9,083 (166)

Gene transcription in filamentous cyanobacteria

Microbiology, 1994
Cyanobacteria are probably the most diverse group of prokaryotes in the number of species, type of habitats, morphology and physiological properties. Their common feature is 0,-evolving photosynthesis, performed by mechanisms similar to those of algae and higher plants.
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Filamentous Cyanobacteria as a Prototype of Multicellular Organisms

Russian Journal of Plant Physiology, 2020
Filamentous cyanobacteria belong to the oldest organisms on our planet. Many cyanobacteria exist in the form of trichomes, i.e., cell chains comprising hundreds of cells connected by intercellular interactions. Under deficiency of environmental nitrogen, the cells in trichomes of some cyanobacteria undergo specialization to perform separate functions ...
T. V. Potapova, O. A. Koksharova
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Behavior of filamentous cyanobacteria in laboratory culture

Microbiology, 2006
The observations of a laboratory culture of filamentous cyanobacteria revealed a complex of behavioral responses of their community, which maintain their activity as an integrated entity. A number of structures formed in the course of filament regrouping were revealed and described; their possible structural and functional analogues in eukaryotic ...
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Cell–cell communication in filamentous cyanobacteria

Molecular Microbiology, 2008
SummaryAlthough cytoplasmic bridges between adjacent cells in the filaments of nitrogen‐fixing cyanobacteria have been known for decades, the existence also of a continuous periplasm along the filaments raised the possibility that alternative modes of communication between cells could be utilized.
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Effect of cryopreservation on the bacterial community structure of filamentous cyanobacteria, Trichormus variabilis (Nostocales, Cyanobacteria)

Cryobiology, 2021
Cryopreservation is an efficient method used to preserve microorganisms for long periods of time, such as up to 30 years, without changes in genetic and physiological characteristics. As cyanobacteria and microalgae are usually maintained as both axenic and xenic cultures, knowledge of co-cultured bacteria and changes in their community structure is ...
Mirye Park, Minseok Kim, Tansol Park, Chang Soo Lee   +3 more
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Measurement of filamentous cyanobacteria by image analysis

Journal of Microbiological Methods, 1996
A method of image analysis is described for measuring total filament lengths of cyanobacteria collected on membrane filters from samples of natural populations or cultures. Images of autofluorescent filaments viewed by epifluorescence microscopy were transferred to a computer screen by using a high resolution television camera and an image integrator ...
Walsby, AE, Avery, A
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Is the periplasm continuous in filamentous multicellular cyanobacteria?

Trends in Microbiology, 2006
Filamentous, heterocyst-forming cyanobacteria are multicellular organisms in which individual cells exchange nutrients and, presumably, regulatory molecules. Unknown mechanisms underlie this exchange. Classical electron microscopy shows that filamentous cyanobacteria bear a Gram-negative cell wall comprising a peptidoglycan layer and an outer membrane ...
Enrique, Flores, Antonia, Herrero, C Peter, Wolk, Iris, Maldener   +3 more
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Undirected motility of filamentous cyanobacteria produces reticulate mats

Geobiology, 2010
AbstractThe roles of biology in the morphogenesis of microbial mats and stromatolites remain enigmatic due to the vast array of physical and chemical influences on morphology. However, certain microbial behaviors produce complex morphological features that can be directly attributed to motility patterns.
R N, Shepard, D Y, Sumner
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Pharmaceutical agents from filamentous marine cyanobacteria

Drug Discovery Today, 2013
Filamentous marine cyanobacteria have emerged as an important source of novel lead compounds for drug discovery and development. The majority of these molecules are nitrogen-containing, belonging to the hybrid polyketide-polypeptide structural class. Owing to their specific interactions with cellular targets, several marine cyanobacterial compounds are
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A digitising tablet for determining the length distribution of filamentous cyanobacteria

European Journal of Phycology, 1993
A drawing prism and a digitising tablet were used in conjunction with a computer to measure length of cyanobacterial filaments. The measurements were more accurate and four times faster than using an eyepiece micrometer. The computer program LENGTH allows measurement of straight and curved filaments, statistical analysis and the drawing of a histogram,
Hoogveld, H.L., Moed, J.R.
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