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Topic: Nostoc

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	Nostoc - MicrobeWiki
		Nostoc, first discovered in the 19th century, is one of the most widespread phototrophic bacteria in the world.
		Nostocs are photosynthesizers which use cytoplasmic photosynthetic pigments rather than chloroplasts in their metabolic process.
		Nostoc environments are diverse and widespread over the globe; isolates have been found in fresh water, soils, and both extremely cold and extremely arid habitats.
	microbewiki.kenyon.edu /mediawiki-1.6.6/index.php/Nostoc (603 words)

	Nostoc
		Nostoc as seen on my stone covered drive
		Nostoc is a very simple alga, belonging to the Cyanophycae group (Blue-Green algae).
		The gelatinous bodies shown above consist of numerous internal filaments called trichomes encapsulated within a sheath or skin.
	www.microscopy-uk.org.uk /mag/artoct01/pjnostoc.html (433 words)

	[No title]
		PCC 6803 -1 197221 Thermosynechococcus elongatus BP-1 -1 0 =HYPERLINK("http://shake.jgi-psf.org/cgi-bin/dispGeneModel.v4?db=thaps1&id=2358", "newV2.0.genewise.10.749.1") 2358 137 3702 Arabidopsis thaliana -1 3055 Chlamydomonas reinhardtii -1 7227 Drosophila melanogaster -1 103690 Nostoc sp.
		PCC 6803 -1 197221 Thermosynechococcus elongatus BP-1 -1 0 =HYPERLINK("http://shake.jgi-psf.org/cgi-bin/dispGeneModel.v4?db=thaps1&id=5306", "newV2.0.genewise.114.108.1") 5306 101 3702 Arabidopsis thaliana -1 3055 Chlamydomonas reinhardtii -1 7227 Drosophila melanogaster -1 103690 Nostoc sp.
		PCC 6803 -1 197221 Thermosynechococcus elongatus BP-1 -1 1 =HYPERLINK("http://shake.jgi-psf.org/cgi-bin/dispGeneModel.v4?db=thaps1&id=21045", "newV2.0.genewise.25.339.1") 21045 338 3702 Arabidopsis thaliana 1 gi11228579gbAAG33078.1AF207064_1 aspartate-semialdehyde dehydrogenase precursor [Arabidopsis thaliana] 340 673 0 341 3055 Chlamydomonas reinhardtii -1 7227 Drosophila melanogaster -1 103690 Nostoc sp.
	genome.jgi-psf.org /pub/JGI_data/Collab/ga/thaps1bestHitsv2.txt (14438 words)

	Phycologia: Studies on the photosynthesis of the terrestrial cyanobacterium Nostoc flagelliforme subjected to ... (Site not responding. Last check: 2007-10-27)
		The photosynthetic response of Nostoc flagelliforme to desiccation and rehydration was investigated.
		Nostoc flagelliforme required light and de novo protein synthesis to recover its photosynthetic activity fully during rehydration.
		Nostoc commune is cosmopolitan and occurs as parchment-like colonies, especially in limestone or karst regions (Potts 2000).
	www.findarticles.com /p/articles/mi_qa3850/is_200409/ai_n9458567 (1345 words)

	Discovery of Rare and Highly Toxic Microcystins from Lichen-Associated Cyanobacterium Nostoc sp. Strain IO-102-I -- ...
		(39 or 66 mg) and from a 21-day-old Nostoc sp.
		An overview of the genome of Nostoc punctiforme, a multicellular, symbiotic cyanobacterium.
		Isolation and characterization of hepatotoxic microcystin homologs from the filamentous fresh-water cyanobacterium Nostoc sp.
	aem.asm.org /cgi/content/full/70/10/5756 (3865 words)

	Nikon MicroscopyU: Confocal Image Gallery - Nostoc (Cyanobacteria)
		The Nostoc is an aquatic form of bacteria that can be found on moist rock, along the bottom of freshwater lakes and springs, and only rarely in marine habitats.
		Similar to other forms of bacteria, the single-celled Nostoc does not have a nucleus or other internal membrane systems and the cytoplasm is comprised of between seventy and eighty-five percent water.
		Without the assistance of internal structures or whip-like appendages, the bacteria are able to move about in a swaying motion possibly in response to electromagnetic stimulation of their pigments.
	www.microscopyu.com /galleries/confocal/nostoc.html (367 words)

	UC Davis News & Information :: Printable news
		Nostoc grows in gelatinous strands in freshwater and a wide range of land habitats.
		The researchers will study how groups of genes are turned on or off as Nostoc grows and responds to changes in its environment, for example when switching to a nitrogen-fixing form.
		Nostoc belongs to the cyanobacteria, thought to be one of the earliest groups of living things to evolve on Earth and the first to use oxygen-producing photosynthesis.
	www.news.ucdavis.edu /search/printable_news.lasso?id=6824&table=news (338 words)

	Cyanobacterial research at Department of Botany (Site not responding. Last check: 2007-10-27)
		Hormogonia represents a cyanobacterial motile life stage which is needed to enter the Gunnera glands and to penetrate its cells, and we are currently examining mechanisms involved in this important differentiation process.
		Several proteins and their corresponding genes have been identified as being up- or down-shifted during hormogonium differentiation and in Nostoc when encapsulated in plant cells, and these are now being further characterized.
		Nostoc cells with a loose membrane configuration are heterocysts.
	www.botan.su.se /Fysiologi/Cyano/Sub-1.htm (991 words)

	Publications
		Nucleotide sequence of an operon in Nostoc sp.
		A hormogonium regulating locus, hrmUA, of the cyanobacterium Nostoc punctiforme strain ATCC 29133 and its response to an extract of a symbiotic plant partner Anthoceros punctatus.
		A polyketide synthase-like gene is involved in synthesis of heterocyst glycolipids in Nostoc punctiforme strain ATCC 29133.
	microbiology.ucdavis.edu /meekslab/publications.htm (1081 words)

	Theses from Uppsala University : 912 - Hydrogenases in the Cyanobacterium Nostoc sp. Strain PCC 73102 (Site not responding. Last check: 2007-10-27)
		With immunological techniques it was revealed that Nostoc PCC 73102 contains proteins that are immunologically related to hydrogenases from other microorganisms and that these proteins seem to be present in both the vegetative cells and the heterocysts.
		The characterization of the structural genes encoding the uptake hydrogenase in Nostoc PCC 73102 demonstrated a high sequence identity with the sequence of the cyanobacterium Anabaena PCC 7120, but a high degree of difference in comparison with sequences from other microorganisms.
		Furthermore, in a Nostoc strain containing both an uptake- and a bidirectional hydrogenase, an induction of a hupL transcript was evident after a shift from non-nitrogen fixing to nitrogen fixing conditions.
	publications.uu.se /theses/abstract.xsql?lang=en&isbn=91-554-4290-0 (269 words)

	Virginia Tech Scientists Studying Cells From Extreme Environments
		Virginia Tech scientists, however, are studying a cyanobacterium, Nostoc commune, which has the ability to survive in extremely harsh, dry environments.
		Potts and Helm are focusing on Nostoc, which is one of a group of special microorganisms called extremophiles.
		"Nostoc has the capacity to survive in a dry state for hundreds, perhaps thousands, of years," Potts says, "and we're trying to find out the mechanisms that make this possible at the physiological, structural, and molecular levels." Desiccation, the drying out of all moisture, is the most acute environmental stress suffered by living cells.
	www.eurekalert.org /pub_releases/1998-10/VT-VTSS-021098.php (523 words)

	Nostoc (Site not responding. Last check: 2007-10-27)
		In general, the description of individual trichomes of Nostoc is covered by the description of Anabaena.
		Nostoc is characterized by a confluent gel holding masses of trichomes together, often in the form of a massive thallus which may be spherical, ovoid, or of a less discernable shape.
		Some colonies or thalli take the form of flattened discs or large sheets, or may be soft and amorphous.
	www.cs.indiana.edu /~kelgalla/species/Nostoc.html (172 words)

	Liaimer Thesis (Site not responding. Last check: 2007-10-27)
		Another approach employed was two dimensional protein gel electrophoresis of protein extracts from Nostoc, forming hormogonia in response to the fresh medium, Blasia exudates and mucilage from Gunnera.
		In several Nostoc strains IAA biosynthesis is tryptophan dependent and is regulated by IAA precursors, anthranilate and tryptophan.
		Indole-3-acetic acid in cyanobacateria of the genus Nostoc: Regulation of biosynthesis and influence on growth and cell differentiation.
	www.vcu.edu /cyanonews/V17/Liaimer.html (309 words)

	nostoc -- Britannica Concise Encyclopedia - The online encyclopedia you can trust!
		The cells are arranged in beadlike chains grouped together in a gelatinous mass.
		Ranging from microscopic to walnut-sized, nostoc masses may be found on soil and floating in still water.
		Like most other cyanobacteria, nostocs contain two pigments and are capable of nitrogen fixation.
	britannica.com /ebc/article-9373678?tocId=9373678&query=gelatinous&ct= (105 words)

	PlanetPapers - Nostoc Information
		The Nostoc is given its bluish color from a blue pigment called phycocyanin and its green color from the chlorophyll is surrounded by a membrane cell wall, called an acapsule.
		Habitat -The habitat of a Nostoc is in the ground and on the roots of plants.
		Importance - Nostoc is important to farmers because the Nostoc in riches the soil with nitrogen.
	www.planetpapers.com /Assets/645.php (221 words)

	Theses from Uppsala University : 1440 - The Nostoc Symbiont of Lichens (Site not responding. Last check: 2007-10-27)
		Cyanobacteria belonging to the genus Nostoc have the capacity to form symbiotic associations with a wide range of organisms.
		Diversity, specificity and cellular modifications of the symbiosis between Nostoc and fungi in the formation of lichens were investigated in this thesis.
		UAA intron as a genetic marker for the subgeneric identification of Nostoc in complex field material was developed.
	publications.uu.se /theses/abstract.xsql?isbn=91-554-5136-5 (374 words)

	Hydrogenases and Hydrogen Metabolism of Cyanobacteria -- Tamagnini et al. 66 (1): 1 -- Microbiology and Molecular ...
		The molecular masses indicated for the uptake hydrogenase subunits are mean values calculated from the deduced amino acid sequences of Anabaena strain PCC 7120 (39), Nostoc strain PCC 73102 (150), and A.
		ATCC 29413 (79) and in Nostoc strain PCC 73102 (112).
		Induction of an in vivo light-dependent hydrogen uptake in Nostoc muscorum cells during a shift from non-nitrogen-fixing to nitrogen-fixing conditions.
	mmbr.asm.org /cgi/content/full/66/1/1 (7816 words)

	Title page for ETD etd-04242004-203124
		Cyanobacteria of the Nostoc genus are known for the thick, mucilaginous carbohydrate coatings that they produce.
		The first portion of this work details attempts to obtain amino acid sequence information from the enzymes (glycosyltransferases) that are responsible for producing the extracellular polysaccharide (EPS) of Nostoc commune DRH1, ultimately to allow the transfer of this capacity to another organism.
		The active enzyme was extracted from Nostoc commune membrane material using Triton X-100, and then purified by anion exchange chromatography.
	scholar.lib.vt.edu /theses/available/etd-04242004-203124 (572 words)

	Sequence Specific Protein Binding to SRSR
		This study will examine whether the repeats found in the cyanobacterium Nostoc punctiforme are similar to the repeats found in Sulfolobus solfataricus in the respect that they bind protein.
		Anabaena 7120, Nostoc Punctiforme, and Trichodesmium have the largest genomes so it is of no surprise that they contain the highest number of clusters as well.
		The overall goal of my research for the coming year is to determine if the SRSR found in Nostoc act as a protein binding site in hopes of better understanding the purpose of such repeats.
	ramsites.net /~tmurphy2/summerproposal.htm (1305 words)

	The Book of the Damned: A Hypertext Edition of Charles Hoy Fort's Book
		Or we've arrived at one of the oldest of the exclusionists' conventions -- or nostoc.
		We shall have many data of gelatinous substance said to have fallen from the sky: almost always the exclusionists argue that it was only nostoc, an Alga, or, in some respects, a fungous growth.
		Or that, if often reported, grayish or whitish gelatinous substance is not nostoc, and is not spawn if occurring in times unseasonable for spawn.
	www.resologist.net /damn04.htm (4041 words)

	Cyanobacteria Photos
		Nostoc "balls" along the shore of a desiccated vernal pool in the Santa Rosa Plateau of Riverside County, California.
		Each gelatinous ball is composed of an aggregation of numerous filaments of cyanobacteria, each with bead-like strands of prokaryotic cells and heterocysts.
		Members of the genus Nostoc have been referred to as "star jelly," "witches' butter," and "mare's eggs." Balls of N.
	waynesword.palomar.edu /cyano1.htm (692 words)

	Establishment of a functional symbiosis between the cyanobacterium Nostoc punctiforme and the bryophyte Anthoceros ...
		Campbell, E. L., Cohen, M. and Meeks, J. A polyketide-synthase-like gene is involved in the synthesis of heterocyst glycolipids in Nostoc punctiforme strain ATCC 29133.
		Cohen, M. and Meeks, J. A hormogonium regulating locus, hrmUA, of the cyanobacterium Nostoc punctiforme strain ATCC 29133 and its response to an extract of a symbiotic plant partner Anthoceros punctatus.
		Joseph, C. and Meeks, J. Regulation of expression of glutamine synthetase in a symbiotic Nostoc strain associated with Anthoceros punctatus.
	mic.sgmjournals.org /cgi/content/full/148/1/315 (3923 words)

	Genetic Diversity of Nostoc Symbionts Endophytically Associated with Two Bryophyte Species -- Costa et al. 67 (9): 4393 ...
		The diversity of the endophytic Nostoc symbionts of two thalloid bryophytes, the hornwort Anthoceros fusiformis and the liverwort
		Nostoc strains were often found in different symbiotic cavities
		Nostoc strains were detected in single thalli, a mixture of symbiotically
	aem.asm.org /cgi/content/full/67/9/4393 (1939 words)

	Comparison of conserved structural and regulatory domains within divergent 16S rRNA-23S rRNA spacer sequences of ...
		Synechocystis PCC 6803, and the filamentous heterocystous strain
		Nostoc PCC 7120, the intermediate fragment (650 bp) being
		in the sequences of Nostoc PCC 7120 and Synechocystis PCC 6803.
	mic.sgmjournals.org /cgi/content/full/146/6/1275 (5888 words)

	Cycad biology, Article 1: Corraloid roots of cycads
		Nostoc and Anabaena are those more commonly found in the coralloid roots of cycads, but other Nostocales can also be found, provided they have the necessary characteristics to infect the roots and to develop and maintain a symbiotic relationship with the cycad.
		Norstog and Nicholls report that because of these characteristics, these "elongated cells are presumably to be transfer cells for the nutrients between the cyanobacteria and the cycads".
		The cyanobiont can create the hormogonia form to move into the roots to inhabit better areas for their growth according to their conditions of living or/and chemical signaling.
	www.plantapalm.com /vce/biology/corraloid.htm (2806 words)

	Mycorrhizal Citations
		Nostoc, Anabaena, and Calothrix were isolated from the surface of the A. papillosa aerial roots, whereas the isolates from the substrate roots were Nostoc, Oscillatoria, and representatives of the LPP group (Lyngbia, Phormidium, and Plectonema, incapable of nitrogen fixation).
		On the D. moschatum substrate roots, Nostoc and LPP group representatives were also found, as well as Fischerella.
		On the aerial roots of P amabilis and D. phalaenapsis grown in a greenhouse simulating the climate of moist tropical forest, cyanobacteria were represented by Nostoc, LPP group, and Scytonema in D. phalaenopsis and by Nostoc.
	mycorrhiza.ag.utk.edu /latest/latest03/03_3tsavk1.htm (260 words)

	Active Fe-Containing Superoxide Dismutase and Abundant sodF mRNA in Nostoc commune (Cyanobacteria) after Years of ...
		The cyanobacterium Nostoc commune exhibits a marked tolerance of desiccation and was the subject of a study that sought to
		of argF (ornithine carbamoyl transferase) in Nostoc sp.
		Cloning and molecular characterization of a presumptive argF, a structural gene encoding ornithine carbamoyl transferase (OCT), in the cyanobacterium Nostoc PCC 73102.
	jb.asm.org /cgi/content/full/182/1/189 (5254 words)

	Definition of nostoc - Merriam-Webster Online Dictionary
		Learn more about "nostoc" and related topics at Britannica.com
		Find more about "nostoc" instantly with Live Search
		See a map of "nostoc" in the Visual Thesaurus
	www.m-w.com /cgi-bin/dictionary?book=Dictionary&va=nostoc (38 words)

	[No title]
		PCC 7120 =HYPERLINK("http://genome.jgi-psf.org/cgi-bin/dispGeneModel.v4?db=thaps1&id=104559", "104559") nr_5020103 nr_5020103 108 9e-06 gi5020103gbAAD38023.1AF148219_1 fibrillin [Nostoc sp.
		HrmA [Nostoc sp.] 0.27 1.06 0.29 Nostoc sp.
		hypothetical protein [Nostoc punctiforme] 0.29 0.99 0.29 Nostoc punctiforme =HYPERLINK("http://genome.jgi-psf.org/cgi-bin/dispGeneModel.v4?db=thaps1&id=116570", "116570") swissprot.ncbi_6919991 swissprot.ncbi_6919991 131 4.4e-10 gi6919991spP74615YE83_SYNY3 Hypothetical protein sll1483 0.32 1.06 0.34 Synechocystis sp.
	genome.jgi-psf.org /pub/JGI_data/Collab/ga/cyanoHitsOnly040505.txt (2558 words)

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