Frankia alni Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... 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. ... Orders Subclass Acidimicrobidae Acidimicrobiales Subclass Actinobacteridae Actinomycetales Bifidobacteriales Subclass Coriobacteridae Coriobacteriales Subclass Rubrobacteridae Rubrobacterales Subclass Sphaerobacteridae Sphaerobacterales The Actinobacteria or Actinomycetes are a group of Gram-positive bacteria. ... Suborders Actinomycineae Corynebacterineae Frankineae Glycomycineae Micrococcineae Micromonosporineae Propionibacterineae Pseudonocardineae Streptomycineae Streptosporangineae Actinomycetales is an order of Actinobacteria. ... Families Acidothermaceae Frankiaceae Geodermatophilaceae Kineosporiaceae Microsphaeraceae Sporichthyaceae Frankineae is a suborder of the Actinomycetales order. ...
Frankia is a genus of nitrogen fixing filamentous bacteria that live in symbiosis with actinorhizal plants, similar to Rhizobia. Bacteria of this genus form root nodules. Nitrogen fixation is the process by which nitrogen is taken from its relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds useful for other chemical processes (such as, notably, ammonia, nitrate and nitrogen dioxide). ... b nhm b. ... Divisions Green algae land plants (embryophytes) non-vascular embryophytes Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses vascular plants (tracheophytes) seedless vascular plants Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongue ferns seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering... Rhizobia (from the Greek words Riza = Root and Bios = Life) are soil bacteria that fix nitrogen (diazotrophy) after becoming established inside root nodules of legumes (Fabaceae). ... Root nodules occur on the roots of plants that associate with symbiotic bacteria. ...
Actinorhizal plants are classified in eight families. They are a diverse group of mostly woody dicots found on all continents except for Antarctica. Many are common plants, like alder, bayberry, sweetfern, Dryas, Chamaebatia and Coriaria. Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Species About 20-30 species, see text. ... Species About 35 species, including: Myrica adenophora Myrica californica - California Bayberry Myrica cerifera - Wax-myrtle Myrica esculenta Myrica faya - Faya Bayberry Myrica gale - Sweet Gale or Bog-myrtle Myrica hartwegii - Sierra Bayberry Myrica heterophylla Myrica holdrigeana Myrica inodora - Scentless Bayberry Myrica nana Myrica parvifolia Myrica pensylvanica - Candleberry Myrica pubescens Myrica... Binomial name Comptonia peregrina (L.) J.M.Coulter Comptonia is a genus of a single species, Comptonia peregrina, in the family Myricaceae, order Fagales. ... In Greek mythology, Dryas was the son of King Lycurgus of Thrace. ... Species About 30 species, including: Coriaria angustissima Coriaria arborea Coriaria japonica Coriaria kingiana Coriaria lurida Coriaria microphylla Coriaria myrtifolia Coriaria napalensis Coriaria plumosa Coriaria pteridoides Coriaria ruscifolia Coriaria sarmentosa Coriaria sinica Coriaria terminalis Coriaria thymifolia Coriaria is the sole genus in the family Coriariaceae. ...
Frankia (both Frankia that lives in a symbiotic relationship with plants and free-living Frankia strains) secrete extracellular proteins that might be involved in processes like bacteriolysis, hydrolysis, and virulence.
Frankia alni's specific role in these relationships is to infect the roots of plants: it deforms root hairs of its plant host by going into the cortical cells and causing the formation of nodules.
The Frankia alni ACN14a strain was isolated from a green alder (Alnus crispa) growing in Tadoussac, Canada.
Frankia alni causes root hair deformation: it penetrates the cortical cells and induces the formation of nodules which resemble those induced by Rhizobium in legumes.
The Frankia sequencing project, which takes the form of a collaborative project between Genoscope, the CNRS and the University of Lyon (Center for Microbial Ecology, UMR CNRS 5557), with help from numerous other teams, began in October 2003.
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