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Encyclopedia > Planctomycetes
?Planctomycetes
Scientific classification
Domain: Bacteria
Phylum: Planctomycetes
Class: Planctomycetia
Order: Planctomycetales
Schlesner & Stackebrandt, 1987
Family: Planctomycetacea
Schlesner & Stackebrandt, 1987
Genera

Gemmata
Isosphera
Pirellula
Planctomyces Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ...

Planctomycetes are an order of obligately aerobic aquatic bacteria and are found in field samples of brackish, and marine and fresh water samples. They reproduce by budding. In structure, the organisms of this group are ovoid and have a holdfast,called the stalk, at the nonreproductive end that helps them to attach to each other during budding. Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... Look up Aerobic in Wiktionary, the free dictionary. ... Look up aquatic in Wiktionary, the free dictionary. ... Subgroups Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular: bacterium) are microscopic, unicellular organisms. ... Brackish redirects here. ... Marine is an umbrella term for things relating to the ocean, as with marine biology, marine geology, and as a term for a navy, etc. ... For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... Impact of a drop of water. ... // General biological meaning - A new organism is formed by the protrusion of part of another organism. ... In geometry, an oval or ovoid (from Latin ovum, egg) is any curve resembling an egg or an ellipse. ... A holdfast is a rootlike plant structure that anchors a seaweed. ...

Contents

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Structure

The organisms belonging to this group lack murein in their cell wall. Murein is an important heteropolymer present in most bacterial cell walls that serves as a protective component in the cell wall skeleton. Instead their walls are made up of glycoprotein rich in glutamate. Planctomycetes have internal structures that are more complex than would be typically expected in prokaryotes. While they don't have a nucleus in the eukaryotic sense, the nuclear material can sometimes be enclosed in a double membrane. In addition to this nucleoid, there are two other membrane-separated compartments; the pirellulosome or riboplasm, which contains the ribosome and related proteins, and the ribosome-free paryphoplasm (Glockner, 2003). In biology and ecology, an organism (in Greek organon = instrument) is a living complex adaptive system of organs that influence each other in such a way that they function as a more or less stable whole. ... Peptidoglycan, also known as murein, is a substance that forms a homogeneous layer lying outside the plasma membrane in bacteria. ... A cell wall is a more or less solid layer surrounding a cell. ... A heteropolymer, also called a copolymer, is a polymer formed when two (or more) different types of monomer are linked in the same polymer chain, as opposed to a homopolymer where only one monomer is used. ... Subgroups Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular: bacterium) are microscopic, unicellular organisms. ... In biology, the skeleton or skeletal system is the biological system providing physical support in living organisms. ... A glycoprotein is a macromolecule composed of a protein and a carbohydrate (an oligosaccharide). ... Glutamate is the anion of glutamic acid. ... Prokaryotes are unicellular (in rare cases, multicellular) organisms without a nucleus. ... In cell biology, the nucleus (from Latin nucleus or nuculeus, kernel) is found in all eukaryotic cells and contains the nuclear genes which form most of the cells genetic material. ... Kingdoms Animalia - Animals Fungi Plantae - Plants Protista A eukaryote is an organism with a complex cell or cells, in which the genetic material is organized into a membrane-bound nucleus or nuclei. ... Nuclear materail consists of materials used in nuclear systems. ... It has been suggested that Net flux be merged into this article or section. ... Eukaryotic cells contain a distinct organelle called the nucleus which holds the cells genetic information. ... Figure 1: Ribosome structure indicating small subunit (A) and large subunit (B). ... A representation of the 3D structure of myoglobin, showing coloured alpha helices. ...

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Genome

RNA sequencing shows that the planctomycetes are distantly related to the other eubacteria. A number of essential pathways are not organised as operons, which is unusual for bacteria (Glockner, 2003). A number of genes have been found (through sequence comparisons) that are similar to genes found in eukaryotes. One such example is a gene sequence (in Gemmata obscuriglobus) that was found to have significant homology to the integrin alpha-V, a protein that is important in transmembrane signal transduction in eukaryotes (Jenkins et al., 2002). Ribonucleic acid (RNA) is a nucleic acid polymer consisting of nucleotide monomers. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria is also the fictional name of a warring nation under Benzino Napaloni as dictator, in the 1940 film The Great Dictator... An operon is a group of key nucleotide sequences including an operator, a common promoter, and one or more structural genes that are controlled as a unit to produce messenger RNA (mRNA). ... In biology, two or more structures are said to be homologous if they are alike because of shared ancestry. ... An integrin, or integrin receptor, is an integral membrane protein in the plasma membrane of cells. ...

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Life cycle

The life cycle involves alternation between sessile cells and flagellated swarmer cells. The sessile cells bud to form the flagellated swarmer cells which swim for a while before settling down to attach and begin reproduction. A life cycle is a period involving one generation of an organism through means of reproduction, whether through asexual reproduction or sexual reproduction. ... This page is a candidate to be moved to Wiktionary. ... A flagellum (plural, flagella) is a whip-like organelle that many unicellular organisms, and some multicellular ones, use to move about. ...

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References

  • F. O. Glöckner, M. Kube, M. Bauer, H. Teeling, T. Lombardot, W. Ludwig, D. Gade, A. Beck, K. Borzym, K. Heitmann, R. Rabus, H. Schlesner, R. Amann, and R. Reinhardt (2003). Complete genome sequence of the marine planctomycete Pirellula sp. strain 1. PNAS 100 (14): 8298–8303.
  • Cheryl Jenkins, Vishram Kedar, and John A. Fuerst (2002). Gene discovery within the planctomycete division of the domain Bacteria. Genome Biology 3 (6): research0031.1–0031.11.
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Planctomycetes

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  Results from FactBites:
 
Planctomycetes - Wikipedia, the free encyclopedia (372 words)
Planctomycetes are an order of obligately aerobic [requires atmospheric oxygen for growth] aquatic bacteria and are found in field samples of brackish and marine as well as freshwater samples.
Planctomycetes have internal structures that are more complex than would be typically expected in prokaryotes.
RNA sequencing shows that the planctomycetes are distantly related to the eubacteria.
  More results at FactBites »

 
 

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