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Topic: Rhizaria

Related Topics

Opisthokont

Amoeboid

Cercozoa

Alveolate

Amoebozoa

Chromista

Foraminifera

Nucleariid

Eukaryote

Protista

Heterokont

Dinoflagellate

Protist

Haptophyte

Trinomial nomenclature

	Tree of Rizharia
		Rhizaria is a heterogeneous assemblage of protists, which includes the majority of filose and reticulose amoebae and most actinopods, plus two parasitic lineages and some flagellates.
		The term Rhizaria was proposed by Cavalier-Smith (2002), and refers to the root-like filose and reticulose pseudopodia and/or axopodia characterizing the majority of the taxa included in it.
		The existence of this supergroup is based exclusively on molecular evidence that accumulated since the demonstration of the close relationship between euglyphid amoebae and chlorarachniophytes (Bhattacharya et al.
	www.unige.ch /sciences/biologie/biani/msg/Amoeboids/Rizharia.html (181 words)

	Rhizaria - Wikipedia, the free encyclopedia
		The different groups of Rhizaria are considered close relatives based mainly on genetic similarities, and have been regarded as an extension of the Cercozoa.
		The name Rhizaria for the expanded group was introduced by Cavalier-Smith in 2002, who also included the centrohelids and Apusozoa.
		"The twilight of the Heliozoa and rise of the Rhizaria, an emerging supergroup of amoeboid eukaryotes".
	en.wikipedia.org /wiki/Rhizaria (262 words)

	Rhizaria - Palaeos (Site not responding. Last check: 2007-10-22)
		So far, Rhizaria seems to be supported solely by molecular data – there are no morphological characters unique to the clade.
		Most are biciliate amoeboflagellates, at least at some point in the life cycle – though many have dispensed with flagella altogether.
		Nevertheless, the Rhizaria are supported by both rRNA and actin trees (Cavalier-Smith and Chao, 2003; Nikolaev et al.
	www.palaeos.org /Rhizaria (1600 words)

	YourArt.com >> Encyclopedia >> Rhizaria (Site not responding. Last check: 2007-10-22)
		Radiolaria }} The Rhizaria are a major line of protists.
		title = The twilight of the Heliozoa and rise of the Rhizaria, an emerging supergroup of amoeboid eukaryotes
		Molecular Phylogeny of Amoeboid Protists - Tree of Rhizaria Category:Eukaryotes Category:Protista * cs:Rhizaria eu:Rhizopoda ja:ãªã¶ãªã¢
	www.yourart.com /research/encyclopedia.cgi?subject=/Rhizaria (262 words)

	SYSTEMATIC BIOLOGY (Site not responding. Last check: 2007-10-22)
		The Cercozoans, the sole kingdom in the supergroup Rhizaria, comprise a group of taxa that emerged mainly through molecular analyses.
		They are composed of taxa that may be biflagellate, but all seem to be able to make filopodia, some of which may be reticulate or with internal microtubular (sometimes mineralized) elements.
		Cavalier-Smith (2002) named the collection of taxa the Rhizaria within which he defines the sister clades: Retaria (Foraminifera + Radiolaria) and the Cercozoa (the cercomonads+haplosporids+plasmodiophorids).
	comenius.susqu.edu /bi/202/CERCOZOAE/cercozoae.htm (167 words)

	From the Cover: The twilight of Heliozoa and rise of Rhizaria, an emerging supergroup of amoeboid eukaryotes -- ...
		Phylogenetic relationships among 121 eukaryotes, emphasizing the polyphyly of heliozoans and radiolarians (gray and fl boxes, respectively) and the emergence of the Rhizaria, a previously undescribed supergroup of mainly amoeboid protists (light gray box).
		The Rhizaria, an Emerging Supergroup of Mainly Amoeboid Eukaryotes.
		Rhizaria could thus be defined as the clade
	www.pnas.org /cgi/content/full/101/21/8066 (3844 words)

	Palaeos Eukarya: Rhizaria
		The clade Rhizaria of unicellular eukaryotes was named very recently (Cavalier-Smith, 2002), but has rapidly ingratiated itself as an industry standard.
		Instead, Foraminifera group with Gromia, a marine amoeboid with smooth filopodia that produces an organic test like many basal Foraminifera (Longet et al.
		The Rhizaria can be thought of as being composed of Radiolaria, Foraminifera, and Cercozoa.
	www.palaeos.com /Eukarya/Units/Rhizaria/Rhizaria.html (1587 words)

	SIB - Projects - Vital-IT - Current Research Projects
		To accelerate gene discovery and investigate evolution within the protist group Rhizaria, we are conducting expressed sequence tag (EST) projects on several rhizarian species.
		One of the objectives of these EST projects is to create the first extensive high-throughput, genome-wide data set for a foraminifera.
		These projects should provide enough data to establish the position of Rhizaria in eukaryotes phylogeny as well as helping to resolve the relations within Rhizaria.
	www.vital-it.ch /vitalit-current.htm (1286 words)

	UCSB Geological Sciences - Faculty Name
		I studied populations of vase-shaped microfossils (VSMs) preserved by the billions in carbonate nodules from the ~742-770 Ma Chuar Group, Grand Canyon, Arizona.
		VSMs exhibit morphological and behavioral characters strikingly similar to those found in modern testate amoebae, including both arcellid amoebae (part of the Amoebozoa clade together with slime molds) and euglyphid amoebae (part of the Rhizaria clade, together with foraminiferans and radiolarians).
		Together with a fossil red, green, and xanthophyte algae preserved in other Proterozoic rocks, VSMs tell us that crown-group eukaryotes had appeared and were diversifying by early Neoproterozoic time, before the onset of worldwide glaciation, and possibly coincident with a rise in atmospheric oxygen.
	www.geol.ucsb.edu /faculty/porter/Early_Eukaryotes.html (558 words)

	BioMed Central \| Full text \| Acquisition of genome information from single-celled unculturable organisms (radiolaria) ...
		At the same time, mutually distant species such as diatom, bacteria, and fungus (E~H) were separate.
		At the distance of 0.163, all of the Rhizaria (A
		Nikolaev SI, Berney C, Fahrni JF, Bolivar I, Polet S, Mylnikov AP, Aleshin VV, Petrov NB, Pawlowski J: The twilight of Heliozoa and rise of Rhizaria, an emerging supergroup of amoeboid eukaryotes.
	www.biomedcentral.com /1471-2164/7/135 (3889 words)

	The excavate protozoan phyla Metamonada Grasse emend. (Anaeromonadea, Parabasalia, Carpediemonas, Eopharyngia) and ...
		are closer to haptophytes than to core Rhizaria or Apusozoa.
		Several rRNA trees weakly suggest that Thecomonadea may be the
		the divergence of Excavata and core Rhizaria, they are probably
	ijs.sgmjournals.org /cgi/content/full/53/6/1741 (7537 words)

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