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Topic: Chytridiomycota

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  Lab 7: Chytridiomycota & Oomycota
One group, the Chytridiomycota, is related to the remainder of the true fungi, while the other group, the Oömycota, is unrelated to the fungi, and is instead more closely related to the diatoms and brown algae.
Both the Oömycota and the Chytridiomycota have in the past been placed with the Fungi, and were referred to as the “lower” fungi, and they have both been removed from the fungi, to be placed with the Protista.
The Chytridiomycota and the Oömycota are primarily aquatic, the former often referred to as Chytrids (and sometimes as water molds), and the latter as oömycetes or water molds.
userwww.sfsu.edu /~biol240/labs/lab_07lowerfungi   (708 words)

 BioMed Central | Full text | Loss of the flagellum happened only once in the fungal lineage: phylogenetic structure of ...
Chytridiomycota is paraphyletic and the basal taxon in fungi
Members of Chytridiomycota are considered to be the basal lineage of fungi since, like metazoans, they use glycogen to store energy and have flagellated spores (zoospores) but, like other fungi, they have chitinous cell walls, flattened mitochondrial cristae, and use the AAA lysine synthesis pathway [39,40].
Chytridiomycota is paraphyletic in the combined RPB1 and RPB2 phylogeny and consists of two major lineages; one being the Blastocladiales, the other including Chytridiales-Spizellomycetales-Monoblepharidales with Neocallimasticales as an outlier (Figure 3).
www.biomedcentral.com /1471-2148/6/74   (6748 words)

 Chytridiomycota - MicrobeWiki   (Site not responding. Last check: 2007-11-04)
For example, the species, there are eight mitochondrially-encoded tRNAs, and it is believed that they have at least one base pair mismatch at the first three positions of their aminoacyl acceptor stems.
The ultrastructure of the zoospore is a definitve characteristic of Chytridiomycota.
In the structure, ribosomes are aggregated around a nucule that is not enclosed in a nuclear cap.
microbewiki.kenyon.edu /index.php/Chytridiomycota   (1588 words)

The placement of the Chytridiomycota into Kingdom Fungi or Kingdom Protoctista is a debatable issue (Margulis and Schwartz, 1998; Holt, 2000; James et al., 2000; Kuhn, 2000; Maddison and Maddison, 2001).
According to Figure 1, the genera examined from the Phylum Chytridiomycota and the Kingdom Fungi developed from a common ancestor that had motile gametes.
The main difference between the Fungi and the Chytridiomycota is that the Chytridiomycota have an undulipodium, setting them apart from the other fungi.
comenius.susqu.edu /bi/202/Journal/vol10/number3/sunbeams-3.htm   (2532 words)

 Medscape MEDLINE search: Chytridiomycota
Chytridiomycota were isolated into pure culture from cool temperate and warm semi-arid soils of eastern Australia.
The sources of minerals accessed by fungi in the Chytridiomycota (chytrid) in soil are largely unknown.
The status of anaerobic zoosporic (Chytridiomycota) fungi along the entire digestive tract of sheep was assessed both analytically and microscopically.
search.medscape.com /uslclient/searchMedline.do?queryText=Chytridiomycota   (880 words)

 Mycology - Taxonomy - Chytridiomycota
The Chytridiomycota is the most ancient group of fungi, and is probably a polyphyletic taxon.
At present Chytridiomycota consists of a single class, Chytridiomycetes, containing five orders which are separated on ultrastructural and molecular characteristics.
The differences in morphology of the flagellar roots enable separation of isolates down to the level of genus, and are particularly important for determing the order.
bugs.bio.usyd.edu.au /Mycology/Taxonomy/chytridiomycota.shtml   (699 words)

 chytrids   (Site not responding. Last check: 2007-11-04)
It is thus postulated that the move to land for plants was facilitated by some forms of symbiotic fungi, and vice-versa.
Generally, the chytridiomycota are typically unicellular, or primitive chains of cells, and attached to a food substrate by tapering rhizoids.
The chytridiomycota are divided into the orders Spizellomycetales, Chytridiales, Blastocladiales, Monoblepharidales and Neocallimasticales, all orders being recognised under an approach emphasising zoospore ultrastructure.
www.world-of-fungi.org /Mostly_Mycology/Jon_Dixon/chytrids.htm   (352 words)

 Chytrid zoospores   (Site not responding. Last check: 2007-11-04)
The zoospores of chytridiomycota typically are small and have a single posterior whiplash flagellum (Figures E, F).
The basic biology of chytridiomycota zoospores is similar to that of the oomycota, although there are some differences in detail.
Of all the single compounds tested, the zoospores showed strongest attraction to sucrose, glucose and fructose - the three sugars detected in largest amounts in barley inflorescence tissues - and the strongest attraction was found to a mixture of these three sugars at the concentrations found in awn and inflorescence tissues.
helios.bto.ed.ac.uk /bto/microbes/chytrid.htm   (2234 words)

 Amazon.com: Chytridiomycota: Books   (Site not responding. Last check: 2007-11-04)
Archaehacteria 100 Cvanohacteria 7500 Fungi 100000 70000 100000 Chytridiomycota 790 575 Zygomycota 600 600 1060 600 665 Ascomvcota 30000...
Chytridiomycota (Class: Chytridiomycetes) is a group that is characterized by...
Labyrinthulamycota, Plasmodiophoromycota and Acrasida, the saprophytic Hyphochytridiomycota, Oomycota and Chytridiomycota, and the parasitic Apicomplexa, Microspora, and Myxospora.
www.amazon.com /s?ie=UTF8&keywords=Chytridiomycota&tag=httpexplaguid-20&index=books&link_code=qs&page=1   (970 words)

 Chytridiomycota, Oomycota - The Fifth Kingdom - Chapter 2b -
Chytridiomycota - Chytridiales - eucarpic thallus of Rhizophydium in culture
Chytridiomycota - Chytridiales - Chytridium lagenaria: sporangium developing on a pollen grain of Pinus.
Chytridiomycota - Chytridiales - sporangia of a eucarpic chytrid on the green alga, Spirogyra
www.mycolog.com /chapter2b.htm   (390 words)

 Mycorrhiza Literature Exchange
Microsporidia may or may not be fungi; the Glomales (vesicular-arbuscular mycorrhizal fungi) may or may not constitute a fifth fungal phylum, and the loss of the flagellum may have occurred either once or multiple times during fungal evolution.
(2) Chytridiomycota, the only fungal phylum having a developmental stage with a flagellum, is paraphyletic and is the basal lineage.
The phylogeny we infer from gene sequences is the first one that is congruent with the widely accepted morphology-based classification of Fungi.
mycorrhiza.ag.utk.edu /latest/latest06/06_11liu1.htm   (395 words)

 Chytrid Fungi (Chytridiomycota) - MavicaNET   (Site not responding. Last check: 2007-11-04)
Members of the division Chytridiomycota have unicellular to mycelial thalli.
Their cell wall composition is mostly chitin, and cellulose is not known to occur.
Chytridiomycota — sexual and asexual spores motile, with posterior flagella - English
www.mavicanet.com /directory/isl/6775.html   (187 words)

 Chytridiomycota — sexual and asexual spores motile, with posterior flagella   (Site not responding. Last check: 2007-11-04)
Chytridiomycota — sexual and asexual spores motile, with posterior flagella
Most are saprophytes, but a number are plant pathogens.
One, Batrachochytrium dendrobatitidis, has been implicated in epidemics that are affecting frogs worldwide.
www.uwlax.edu /biology/volk/fungi3/sld040.htm   (42 words)

 Chytrid Fungi Online
Zoosporic fungi are classified in the Phylum Chytridiomycota, which currently includes five orders, each with distinct zoospore architecture: Blastocladiales, Chytridiales, Monoblepharidales, Spizellomycetales, and Neocallimastigales (Barr 2001).
Chytrid fungi are important saprophytes and parasites in both aquatic and terrestrial habitats and have been collected from the arctic to the tropics (reviewed in Powell 1993).
Molecular analyses indicate that the Phylum Chytridiomycota is not monophyletic.
www.bama.ua.edu /~chytrid   (868 words)

 Teaching the Fungal Tree of Life-Home
Basidiomycota and Ascomycota are more closely related to one another than either is to Zygomycota or Chytridiomycota.
Or you could say that all of the Basidiomycetes and Ascomycetes share a common ancester that is not shared with the other groups.
The branches leading to Zygomycota and Chytridiomycota are dashed to show that there is more than one lineage in these groups.
www.clarku.edu /faculty/dhibbett/TFTOL/content/1introprogress.html   (893 words)

 A thru M   (Site not responding. Last check: 2007-11-04)
Chytrid - a general term used to describe members of the Chytridiomycota; previously restricted to members of the Chytridiales.
Coenocytic - nonseptate; referring to the fact that nuclei are present in the chytoplasm without being separated by cross-walls, that is, the nuclei lie in a common matrix.
The hyphae of members of the Oomycota and Chytridiomycota are considered coenocytic.
www.botany.uga.edu /zoosporicfungi/amgz.htm   (455 words)

 CHAP 2   (Site not responding. Last check: 2007-11-04)
Until recently, all the true fungi were assigned to four phyla – Chytridiomycota, Zygomycota, Ascomycota and Basidiomycota.
The phylum Chytridiomycota has traditionally been characterised on the basis of motile cells with a single posterior flagellum.
This has revealed that some non-motile fungi, previously assigned to the Zygomycota, are closely related to the Chytridiomycota and must be reassigned.
helios.bto.ed.ac.uk /bto/chap2.htm   (510 words)

 Flagellated Fungi
We will discuss two divisions of aquatic fungi, in detail, the Chytridiomycota and Oomycota, and briefly describe a third, the Hyphochytridiomycota.   Flagellated fungi reproduce asexually by means of flagellated spores called zoospores that are produced in zoosporangia.
Based on cell wall biochemistry, the Chytridiomycota was first classified with the true fungi, according to Bartnicki-Garcia (1970).
However, because of the lack of morpohological similarities to the terrestrial fungi, there was a great deal of hesitation in classifying them as fungi and they continued to be maintained in the kingdom Protista since the onset of the five kingdom system of classification.
www.botany.hawaii.edu /faculty/wong/Bot201/Flagellated_Fungi/Flagellated_Fungi.htm   (730 words)

2.45 -- Chytridiomycota, Chytridiales): Rhizophydium sporangia on the green alga Oedogonium (Chloroprotista).
2.55 -- Chytridiomycota, Chytridiales: zoospore ultrastructure: explanatory diagram.
2.67 -- Chytridiomycota: thalli of Spizellomyces (eucarpic), Olpidium (holocarpic), Cladochytrium (polycentric), Monoblepharis (reproduction).
www.mycolog.com /slidecat.htm   (11647 words)

 Evolution and Phylogenetic Relationships   (Site not responding. Last check: 2007-11-04)
Basidiomycota is best known for its production of large structures like mushrooms, puffballs and brackets as well as microscopic organisms like the rust and smut fungi that are parasites of plants
Although the life histories of all fungi are unknown, molecular data suggests that Basidiomycota and other terrestrial fungi originated from the aquatic Chytrids in the late Precambrian era (4600-570 millions years ago)
Chytrids or Chytridiomycota are mainly aquatic with flagellated gametes allowing their reproductive cells to swim around
www.personal.psu.edu /users/h/i/hix5000/Evolution.htm   (244 words)

The Chytridiomycota, or "chytrids" as they are commonly called, are a group of mostly unicellular fungi occurring in a variety of habitats ranging from soil and roots to the rumens of cows and deer.
Asexual and sexual spores are produced in sporangia and escape as zoospores (swimming cells).
Because of their basically non-hyphal nature and often unusual requirements for growth, the Chytridiomycota are seldom encountered as moulds.
www.botany.utoronto.ca /ResearchLabs/MallochLab/Malloch/Moulds/Classification.html   (1516 words)

 Botany 201 Laboratory, Chytridiomycota
Their cell wall composition is mostly chitin, and cellulose is not known to occur.
The Chytridiales are thought to be the most primitive members of the Chytridiomycota.
A distinctive characteristic of this order can be observed in the ultrastructure of the zoospore.
www.botany.hawaii.edu /faculty/wong/Bot201/Chytridiomycota/Chytridiomycota.htm   (959 words)

 LifePharms Inc. Natural Product Collection.
Taxonomically, fungi represent a separate kingdom with equal taxomonic status as Plantea and Animalia.
Fungi are usually classified in four divisions: the Chytridiomycota (chytrids, water fungi), Zygomycota (Rhizopus and other bread molds), Ascomycota (yeast, most lichen-associated fungi and some “mushrooms), and the Basidiomycota (most mushrooms).
The major divisions are based on their method of producing sexual spores.
www.lifepharms.com /product_libraries.asp   (551 words)

 Chytridiomycota - Ciencia.net - Noticias científicas, artículos científicos sobre matemáticas, ...
Chytridiomycota - Ciencia.net - Noticias científicas, artículos científicos sobre matemáticas, física, química, astronomía...
Chytridiomycota es una división de hongos, contiene una ünica clase y 5 órdenes.
El artículo "Chytridiomycota" está dado de alta en los siguientes temas y categorías
www.ciencia.net /VerArticulo/Chytridiomycota?idArticulo=dse5ot8bb7ihdtlt6j13z6   (105 words)

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