Glomeromycota informally glomeromycetes is one of eight currently recognized divisions within the kingdom Fungi with approximately described species.
Not all species have been shown to form AMs, and one, Geosiphon pyriformisis known not to do so. Instead, it forms an endocytobiotic association with Nostoc cyanobacteria. They can also be found in wetlandsincluding salt-marshes, and associated with epiphytic plants.
New colonization of AM fungi largely depends on the amount of inoculum present in the soil. Spores are commonly dispersed by fungal and plant burrowing herbivore partners, but some air dispersal capabilities are also known. It has also been observed that the rate of root system colonization is directly correlated to spore density in the soil.
The necessary components for the colonization of Glomeromycota include, the host's fine root system, proper development of intracellular arbuscular structures, and a well-established external fungal mycelium. Colonization is accomplished by the interactions between germinating spore hyphae and the root hairs of the host or by development of appressoria between epidermal root cells.
The process is regulated by specialized chemical signaling and by changes in gene expression of both the host and AM fungi.
Intracellular hyphae extend up to the cortical cells of the root and penetrate the cell walls, but not the inner cellular membrane creating an internal invagination. The penetrating hyphae develop a highly branched structure called an arbuscule which have low functional periods before degradation and absorption by host's root cells. A fully developed arbuscular mycorrhizal structure facilitates the two-way movement of nutrients between the host and mutualistic fungal partner.
The symbiotic association allows the host plant to respond better to environment stresses, and the non-photosynthetic fungi to obtain carbohydrates produced by photosynthesis.
Initial studies of the Glomeromycota were based on the morphology of soil-borne sporocarps spore clusters found in or near colonized plant roots. With the advent of molecular techniques this classification has undergone major revision. Several species which produce glomoid spores i. Work in this field is incomplete, and members of Glomus may be better suited to different genera  or families. Fossil Glomeromycota are known back million years as Diskagma"Reproduccion de las plantas asexual wikipedia" also by Mesoproterozoic Horodyskia and Ordovician to Devonian Prototaxites.
The biochemical and genetic characterization of the Glomeromycota has been hindered by their biotrophic nature, which impedes laboratory culturing. This obstacle was eventually surpassed with the use of root cultures. This result was inconsistent with previous PCR-based studies of community structure in the region; suggesting that previous PCR-based studies may have underestimated Glomeromycota abundance due to amplification biases.
From Wikipedia, the free encyclopedia. Glomeromycota Gigaspora margarita in association with Lotus corniculatus Scientific classification Kingdom: Schuessler  Class: Mycorrhizal symbiosis 3 ed. Management of Arbuscular Mycorrhizal Fungi. In Roots and Soil Management: Interactions between roots and the soil. American Society of Agronomy.
American Society for Microbiology. True fungi classification, fungal orders. Xylonomycetes Geoglossomycetes Leotiomycetes Laboulbeniomycetes Sordariomycetes. Archaeorhizomycetes Neolectomycetes Pneumocystidomycetes Schizosaccharomycetes Taphrinomycetes.
Tritirachiomycetes Mixiomycetes Agaricostilbomycetes Cystobasidiomycetes Microbotryomycetes Classiculomycetes Cryptomycocolacomycetes Atractiellomycetes Pucciniomycetes. Monilielliomycetes Malasseziomycetes Ustilaginomycetes Exobasidiomycetes.
Hyaloraphidiomycetes Monoblepharidomycetes Sanchytriomycetes Mesochytriomycetes Chytridiomycetes.
Gigaspora margarita in association with Lotus corniculatus. Wikimedia Commons has media related to Glomeromycota. Wikispecies has information related to Glomeromycota. Pucciniomycotina Tritirachiomycetes Mixiomycetes Agaricostilbomycetes Cystobasidiomycetes Microbotryomycetes Classiculomycetes Cryptomycocolacomycetes Atractiellomycetes Pucciniomycetes. Glomeromycota Paraglomeromycetes Archaeosporomycetes Glomeromycetes.
As esporas xerminan asexualmente dando lugar a unha planta chamada gametófito, que realiza a reprodución sexual.
Os gametófitos. La planta foliosa que se repara, el felechu», ye un esporofito diploide Nos hongos hai dos formes de reproducción: sexual y asexual, anque en delles. Artículo introductorio en Terminología descriptiva de las plantas#Introducción a los órganos de Tales flores se denominan neutras o asexuales, se disponen usualmente en la periferia de la .