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Glomeromycota - Wikipedia, the free encyclopedia The division (phylum) Glomeromycota is a taxon within the kingdom Fungi that includes those species that form arbuscular mycorrhizae with plants. Glomeromycota are characterized by the formation of dichotomously-branching arbuscules in the roots of angiosperms, in an obligate symbiotic relationship known as a mycorrhiza (pl. Glomeromycota at the International Culture Collection of VA Mycorrhizal Fungi (INVAM) en.wikipedia.org /wiki/Glomeromycota   (202 words)

Glomeromycota The Glomeromycota are a very old group with an estimated origin of at least 600 to 620 million years ago. Phylogeny of the Glomerales and Diversisporales (Fungi: Glomeromycota) from actin and elongation factor 1-alpha sequences. Nomenclatural clarifications and new taxa in the Glomeromycota. www.tolweb.org /tree?group=Glomeromycota   (3248 words)

Mycology - Taxonomy - Glomeromycota Remaining members of the Glomeromycota are obligate associates of photosynthetic plants. Glomeromycota are symbionts found only in terrestrial habitats. Schussler, Schwartzott and Walker 2001 A new phylum, the Glomeromycota: phylogeny and evolution. bugs.bio.usyd.edu.au /Mycology/Taxonomy/glomeromycota.shtml   (673 words)

Fungus - Wikipedia, the free encyclopedia Black bread mold is a common species that belongs to this group. Members of the Glomeromycota are also known as the arbuscular mycorrhizal fungi. Sexual reproduction has not been observed in the Glomeromycota or in ascomycetes commonly referred to as Fungi imperfecti or Deuteromycota. en.wikipedia.org /wiki/Fungus   (1473 words)

Glomeromycota - Wikispecies From A new fungal phylum, the Glomeromycota: phylogeny and evolution See the website at TU Darmstadt [1] for latest phylogeny of the Glomeromycota. This page was last modified 11:39, 10 December 2005. species.wikipedia.org /wiki/Glomeromycetes   (67 words)

Pawlowska   (Site not responding. Last check: 2007-10-10) Glomeromycota contribute to this association by facilitating plant mineral nutrient uptake from the soil. This ability of AM fungi is believed to have enabled the transition of the early plants to the terrestrial habitat. Application of molecular phylogenetics and the phylogenetic species recognition concept to the Glomeromycota will help to resolve not only taxonomic but also ecological puzzles, including an apparent lack of host specificity in many AM fungal morphospecies. ppathw3.cals.cornell.edu /ppath/FacultyInfo/Pawlowska.html   (446 words)

Glomeromycètes In Vitro Collection (GINCO), Introduction GINCO (Glomeromycota in vitro collection) traces its origin in the close international scientific collaboration between the Ottawa Research Centre, Agriculture and Agri-Food Canada, in charge of the Canadian Collection of Fungal Cultures (CCFC, Canada) and the Mycothèque de l'Université catholique de Louvain (MUCL, Belgium). It is the brainchild of Dr Yolande Dalpé (ECORC, Canada) and Dr Stéphane Declerck (MUCL, Belgium), and is supported by research teams having a huge know-how in isolation, cultivation, propagation and conservation of in vitro monoxenically produced AMF. Glomeromycota IN vitro COllection is the first international culture collection of AMF based exclusively on in vitro produced material res2.agr.gc.ca /ecorc/ginco-can/intro_e.htm   (193 words)

Pawlowska lab - what we do   (Site not responding. Last check: 2007-10-10) Molecular phylogeny and the fossil record date Glomeromycota to the Ordovician, and indicate that these fungi are one of the oldest terrestrial organisms. If the extant AM fungi are indeed exclusively clonal, and have been clonal throughout their evolutionary history, they would be one of the most ancient asexual multicellular lineages, and serve as a model for studying long-term evolutionary survival in the absence of sex. Armed with the understanding of organization of within-individual genetic variation in AM fungi, we are studying their reproductive mode in nature using methods of population genetics and phylogenetics. ppathw3.cals.cornell.edu /People/labs/Pawlowska/projects.html   (546 words)

Requena Molecular laboratory for the arbuscular mycorrhizal symbiosis This symbiosis develops in the soil between the roots of most vascular plants you can imagine and a certain group of ancient fungi forming the new fungal phyllum the Glomeromycota (Schüßler et al., 2001). Our research interest is on one hand the exchange of signals between plant and fungus and the interpretation of those signals that allows the development of the symbiosis; and on the other hand, we are interested how and where the carbon transport from the plant to the fungus takes place. Schüßler A, Schwarzott D, Walker C (2001): A new fungal phylum, the Glomeromycota: phylogeny and evolution. www.uni-tuebingen.de /uni/bbp/requena   (288 words)

CHAP 2   (Site not responding. Last check: 2007-10-10) But in 2001, a fifth phylum was erected – the Glomeromycota (arbuscular mycorrhizal fungi and their relatives). In Chapter 1, we noted that the Glomeromycota were associated with the earliest land plants (Schuessler, Schwarzott and Walker, 2001) and are still associated with the vast majority of plants today. The status of Zygomycota (as currently defined after excluding the Glomeromycota) is still unclear. helios.bto.ed.ac.uk /bto/FungalBiology/chap2.htm   (510 words)

AM - heterokaryosis or homokaryosis   (Site not responding. Last check: 2007-10-10) Arbuscular mycorrhizal (AM) fungi (Glomeromycota) are thought to be the oldest group of asexual multicellular organisms. JAMES D. Arbuscular mycorrhizal (AM) fungi (Glomeromycota) reproduce asexually, are multinucleate, and have high genetic variation within single cells. Pawlowska and Taylor find that genetic variation within AM fungal cells is not lost as a result of segregation, and they interpret this as evidence that the variation is present within each nucleus and that all nuclei within individual spores are genetically identical (that is, homokaryotic). www.sci.saitama-u.ac.jp /~ohnishi/Ref/AM-hetero_or_homokaryosis.htm   (6761 words)

Mycorrhizal Citations Lately, two hypotheses have been proposed to explain the source of such a variation, mainly either at internuclear (multigenomic) or intranuclear (polyploidy) levels. Evidence reported by numerous authors suggests that the magnitude of sequence variation, and the presence in single spores of sequences from apparently unrelated taxa within the Glomeromycota, makes the use of one, or very few sequences, from only one or two isolates of AMF insufficient for taxonomic purposes in some species groups. A large-scale, collaborative study on genetic variation in AMF across different genes could help to address fundamental questions on the biology and genetic structure of these important symbionts. mycorrhiza.ag.utk.edu /latest/latest05/05_1rodri1.htm   (163 words)

Signaling and nutrient transfer mechanisms in the mycorrhizal symbiosis The fungal partners are members of the Glomeromycota (a newly designated phylum whose members were formerly placed in the Zygomycota). In contrast, the plants that participate in monotropoid and orchid mycorrhizal associations are highly specific, and associate with a narrow range of fungal species. It has been thought that these associations are formed exclusively with Basidiomycete fungal species; however, it has recently been discovered that several species of tropical achlorophyllous epiphytes form mycorrhizal associations with species AM fungal species in the Glomeromycota (Bidartando et al. www.biology.duke.edu /bio265/jlp13/myco.php?t=types   (637 words)

Chapter 3b  Zygomycota Phylum 3 - Glomeromycota -- arbuscular mycorrhizal fungi Morton, J.B. and G.L. Benny (1990) Revised classification of arbuscular mycorrhizal fungi (Zygomycetes): a new order, Glomales, two new suborders, Glomineae and Gigasporineae, and two new families, Acaulosporaceae and Gigasporaceae, with an emendation of Glomaceae. Schuessler, A., D. Schwarzott and C. Walker (2001) A new fungal phylum, the Glomeromycota: phylogeny and evolution. www.mycolog.com /CHAP3b.htm   (2817 words)

Mycological Progress - International Journal of Fungal Sciences -----> At the Frontline of Mycology <-----   (Site not responding. Last check: 2007-10-10) Two members of the Glomeromycota form distinct ectendomycorrhizas with Alzatea verticillata, a prominent tree in the mountain rain forest of southern Ecuador Mycological Progress 4(1): 11—22 (2005) Mycorrhizas formed by members of the Glomeromycota with roots of Alzatea verticillata (Alzateaceae, Malpighiales), a characteristic tree of the neotropical mountain rain forest in southern Ecuador, were investigated using light microscopy. The presented results are also a contribution for distinguishing members of Glomeromycota by their vegetative structures. www.mycological-progress.com /1024/abstracts-04-01.html   (1051 words)

Occurrence of Glomeromycota spores and some arbuscular mycorrhiza fungal species in Arable fields in Sweden   (Site not responding. Last check: 2007-10-10) Occurrence of Glomeromycota spores and some arbuscular mycorrhiza fungal species in Arable fields in Sweden Fungi within the phylum Glomeromycota were investigated in arable fields throughout Sweden. Sweden is located between 55 and 69 North. www.teriin.org /division/bmbdiv/cmr/docs/abs47.htm   (185 words)

Bidartondo 2002b   (Site not responding. Last check: 2007-10-10) Epiparasitic plants examined to date depend on ectomycorrhizal fungi for carbon transfer and exhibit exceptional specificity for these fungi, but for most myco-heterotrophs neither the identity of the fungi nor the sources of their carbon are known. Because many myco-heterotrophs grow in forests dominated by plants associated with arbuscular mycorrhizal fungi (AMF; phylum Glomeromycota), we proposed that epiparasitism would occur also between plants linked by AMF. On a global scale AMF form the most widespread mycorrhizae, thus the ability of plants to cheat this symbiosis would be highly significant. plantbio.berkeley.edu /~bruns/papers/bidartondo2002b.html   (254 words)

mcm8meeting Peter Jeffries gave an overview on the history of the Systematics of the Glomeromycota “From Endogone to the Glomeromycota — in 200 years” (see Annex 2 of the Minutes). It may be reasonably concluded that insights and tools obtained from genome sequencing of G. intraradices will be widely applicable in AM fungal research. Small meeting on the Certification of mycorrhiza and another on the International Bank for the Glomeromycota will also be organized respectively by Jacqueline Baar (NL) and Manuela Giovannetti (I). www.dijon.inra.fr /cost838/managementcommitte/mc8meeting.htm   (1680 words)

Dijon Session reports 2002-2003: Due to the incorporation of many AMF from all over the world, and the fact that AMF were asigned to a newly raised phylum (Glomeromycota), BEG was changed into IBG (International Bank of Glomeromycota): BEG pages were changed and a French version was incorporated. GINCO (Glomeromycota IN vitro Collection) is an international collection of AM fungi maintained under in vitro conditions. The progresses in the in vitro cultures of AM fungi was summarized and the advantages (purity of strains, easy control of strain quality, non-destructive monitoring, adequete for molecular biology studies, etc ) and desadvantages discussed. www.dijon.inra.fr /cost838/scientific_meetings/Dijon/SReports.htm   (2005 words)

Introducing New Members of the Faculty To help introduce to the Cornell community the new members of the university's faculty the Cornell Chronicle is publishing brief new-faculty profiles through December. Academic focus: Pawlowska studies the biology and evolution of arbuscular mycorrhizal (AM) fungi (phylum Glomeromycota) with a particular emphasis on their reproductive mode and mechanisms of interacting with the host. AM fungi form the oldest and most widespread symbiotic association involving land plants and hold a promise of becoming a substitute for chemical fertilizers in sustainable land management systems. www.news.cornell.edu /chronicle/04/12.2.04/new_faculty.html   (480 words)

amf-phylogeny_home   (Site not responding. Last check: 2007-10-10) Molecular phylogeny of Zygomycota based on EF-1α and RPB1 sequences: limitations and utility of alternative markers to rDNA. Phylogeny of the Glomerales and Diversisporales (Fungi : Glomeromycota) from actin and elongation factor 1-alpha sequences Glomeromycota rRNA genes - the diversity of myths? www.tu-darmstadt.de /fb/bio/bot/schuessler/amphylo/amphylo_pub.html   (1249 words)

Committee On Evolutionary Biology - Students RESEARCH: Molecular and morphological phylogenetics of the Carnivora. RESEARCH: Patterns and process of diversity in plants and symbiotic arbuscular mycorrhizal fungi (Glomeromycota). RESEARCH: Phylogeography; speciation, the ecology of adaptive radiation pondside.uchicago.edu /ceb/students.html   (242 words)

Vorwort Helgason, I.J. Watson, J.P.W. Young (2003) Phylogeny of the Glomerales and diversisporales (Fungi : Glomeromycota) from actin and elongation factor 1-alpha sequences Walker (2001) A new fungal phylum, the Glomeromycota: evolution and phylogeny A.Schussler, D. Schwarzott, C. Walker (2003) Glomeromycota rRNA genes – the diversity of myths? www.ipb-halle.de /myk/start/X5/am.html   (2547 words)

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