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Topic: Beggiatoa

In the News (Thu 24 Dec 09)

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	2000 Progress Report - CHARACTERIZATION OF BEGGIATOA IN BLACK BAND DISEASE OF SCLERACTINIAN CORALS
		The objective of this research is to characterize the ecological physiology of the sulfide-oxidizing bacterium Beggiatoa within fl band disease of scleractinian corals.
		Black band Beggiatoa may, in fact, display unique metabolic as well as unique motility properties that may be important in the horizontal migration of the disease across coral tissue.
		It is expected that, within the fl band disease microbial consortium, Beggiatoa display unique metabolic and motility properties that may influence the horizontal migration of fl band disease across coral tissue.
	es.epa.gov /ncer/fellow/progress/99/viehmant.00.html (656 words)

	Beggiatoa gigantea
		Beggiatoa gigantea belong to the group of bacteria that use sulfur as an energy source.
		Another location of Beggiatoa is the rhizosphere of plants, such as rice or cattails, which live in flooded soils.
		Overgrowth of Beggiatoa also leads to the formation of sulfur slime, which is a yellow to white stringy deposit, formed by the oxidation of the hydrogen sulfide which might be present in groundwater.
	www.umr.edu /~microbio/BIO221_1999/B_gigantea.html (558 words)

	Beggiatoa (Site not responding. Last check: 2007-10-14)
		Beggiatoa is able to be cultivated easily in low nutrient mediums.
		Beggiatoa can usually be found in habitats that have high levels of hydrogen sulfate.
		The key to Beggiatoa growth since it is a gradient organism is its placement.
	soils1.cses.vt.edu /ch/biol_4684/Microbes/Beggiatoa.htm (385 words)

	2002 Project - Ecophysiology and genetics of Monterey Canyon Beggiatoa species
		Numerous sediment cores obtained from this site have yielded several different width classes of very large Beggiatoa filaments (120 and 80 micrometers in diameter for the widest cells) that have been shown to accumulate nitrate in their central vacuoles to concentrations that are typically ten thousand-fold above ambient levels.
		We have further shown, through studies of sediment porewater profiles and microbial enzyme activities, that this Beggiatoa strain appears to be able to generate energy via respiration of hydrogen sulfide to sulfate while reducing nitrate to ammonia.
		Emerging differences in the ability of various sediment Beggiatoa mats to tolerate or consume oxygen will be investigated along with a characterization of differences in their internal nitrate pools.
	www.mbari.org /rd/projects/2002/benthic/900211_ecophysiology.html (320 words)

	:: CHAMP >> Coral Disease Identification and Information :: NOAA's Coral Health and Monitoring Program ::
		Beggiatoa appears white due to intracellular inclusions of stored elemental sulfur.
		Beggiatoa filaments (1-4 mm wide) that are non-pigmented but contain highly refractive intracellular granules of elemental sulfur.
		Numerous gram negative bacteria (small rods) are also present but not identifiable using light microscopy.
	www.coral.noaa.gov /coral_disease/black_band.shtml (576 words)

	Activities know to affect the sea pens and burrowing megafauna biotope complex
		In 1987, most of the fine mud bottom of the basin was clear of Beggiatoa, with bacterial mats restricted to the immediate vicinity of the salmon cages.
		In 1988 a carpet of Beggiatoa covered the sea bed throughout the south basin and the sediment was close to becoming totally anoxic.
		In the year separating these observations salmon cages had been positioned at both ends of the south basin (they were previously near one shore in the centre of the basin) and production had been increased.
	www.ukmarinesac.org.uk /communities/seapens/sp5_1.htm (1565 words)

	g-o.de \| Shuttle-Express am Meeresgrund: Das bewegte Leben von Thioploca und Beggiatoa - Autrieb Peru Chile (Site not responding. Last check: 2007-10-14)
		Thioploca wird neben Beggiatoa und dem erst 1997 entdeckten Riesenbakterium Thiomargarita namibiensis zu der Gruppe der nitratspeichernden Schwefelbakterien gezählt.
		Fadenförmige Bakterien, die natürlicher Weise keine Hüllen mehr bilden, gehören der Gattung Beggiatoa an.
		Beggiatoa ist ein weltweit verbreiteter Organismus, der sowohl im Süßwasser, als auch im Wattenmeer und an hydrothermalen Quellen zu Hause ist.
	www.geoscience-online.de /index.php?cmd=focus_detail2&f_id=153&rang=6 (456 words)

	Coral Disease at the Flower Gardens and Stetson Bank: A Report by Eric Borneman - Reefkeeping.com
		I recommend colonies showing such signs at the Flower Gardens be monitored to ascertain the pattern of the condition over space and time, and that samples should be taken and studied to determine the etiology of this condition.
		Beggiatoa mats are apparently common in deep areas at the FGNMS.
		They are nearly ubiquitous in marine environments and have been identified as single agents or components of coral diseases; for example, as a consortium member of fl band disease lines and mats.
	www.reefkeeping.com /issues/2003-07/eb (4761 words)

	Protozoa: Ciliates: An introduction with photomicrographs of holotrich ciliates. (Site not responding. Last check: 2007-10-14)
		The fine threads looping about in the background are the filamentous bacterium Beggiatoa.
		The bright granules within the organism are of a sugar-based compound called paramylum (also called paramylon), an energy storage form common to many unicellular organisms.
		It is somewhat flattened due to pressure from the coverglass caused by evaporation of the specimen.
	www.micrographia.com /specbiol/protis/cili/cili0100.htm (1518 words)

	Species Composition of Beggiatoa spp. on anoxic sublittoral mud (CMU.Beg)
		The biology of other component species of the biotope is also taken into account wherever information is known to the researcher.
		This biotope is characterized by mats of the bacterium Beggiatoa spp.
		Since no or very few other macrofaunal species at least are present in the biotope the sensitivity of Beggiatoa is probably representative of the sensitivity of the whole biotope.
	www.marlin.ac.uk /biotopes/Bio_SpComp_CMU.Beg.htm (178 words)

	Benthic Impact of Salmon Netpen Aquaculture (Site not responding. Last check: 2007-10-14)
		The endpoint of the formation of Beggiatoa mats was deemed the appropriate endpoint indicating unacceptable degradation of the benthic environment for Maine coastal waters.
		The formation of Beggiatoa mats was linked to lack of oxygen when current speed was reduced for 2 h or longer during a tidal cycle.
		This model predicted that the formation of Beggiatoa mats only occurs when oxygen supply is reduced below the threshold level required to oxidize sedimented organic matter.
	ciencia.silvert.org /eim/workshop/papers/findlay.html (324 words)

	Beggiatoa alba (Site not responding. Last check: 2007-10-14)
		Growth may occur between 0 and 40`C. Thermophilic strains have not been characterized, although some beggiatoas have been observed in high temperature runoffs associated with thermal springs.
		Growth factors are not required by most strains; some strains may require vitamin B12 H2S or thiosulfate may be used as the electron donor for chemolithotrophic metabolism Dinitrogen is fixed by a variety of strains.
		Beggiatoas are gradient organisms existing in horizontal layers in sedimentsat the interface between the underlying anoxic sulfide-liberating zone and the overlying oxic zone.
	venus.uwindsor.ca /courses/biology/fackrell/Microbes/15325.htm (496 words)

	Biogeochemical Process at the Sediment-Water Interfaces (Site not responding. Last check: 2007-10-14)
		Beggiatoa are filamentous colorless sulfur bacteria that are among the largest known bacteria (up to a centimeter long with 200 micrometer cell-width).
		We found that high Beggiatoa biomass correlates artificially with high pore-water nitrate concentrations when the sediment has been frozen for storage purpose.
		On the other hand, we found that areas with visible white Beggiatoa mats must not compulsory have a higher biomass than other sulfidic sediments.
	www.aslo.org /meetings/victoria2002/archive/587.html (232 words)

	The effect of organic enrichment on intertidal sand and mudflats and subtidal mobile sandbanks
		With greater enrichment, the diversity declines and the community becomes increasingly dominated by a few pollution-tolerant, opportunistic species such as the polychaetes Capitella capitata, in sand flats, and Manayunkia aesturina in mudflats.
		In grossly polluted environments, the anoxic sediment is defaunated and may be covered by sulphur-reducing bacteria such as Beggiatoa spp.
		Such a change will affect the palatability of the prey and thus impair functioning of marine areas.
	www.ukmarinesac.org.uk /communities/intersand-mud/ism5_5.htm (605 words)

	From the Top of the World...
		Beggiatoa is among the bacteria found in the deep-sea hydrothermal vent environment, but it is not the only bacteria to take advantage of this chemosynthetic process.
		In this activity, students will grow and observe succession and chemosynthesis of bacterial colonies: one lighted, the other in the dark.
		Three other bacteria -- Beggiatoa (white or yellow), Chlorobium (green), and Chromatium (purple and violet) -- use hydrogen sulfide as part or all or their energy source to make food; because they also require oxygen, you will find these bacteria near the surface of the sediments.
	www.bigelow.org /foodweb/chain4.html (1049 words)

	Micrographia: Specimens: Bacteria (Monera). (Site not responding. Last check: 2007-10-14)
		This bacterium thrives in organically polluted waters, and is especially common near sewage outfalls where it is known, somewhat inaccurately, as sewage fungus.
		Here is a short movie sequence of the filamentous bacterium Beggiatoa in brightfield illumination.
		The filaments are in constant longitudinal movement which causes the filaments to loop and tangle, curve and straighten, and they can impose an erratic movement upon even quite large particles which come into contact with them.
	www.micrographia.com /specbiol/bacteri/bacter/bact0100.htm (1069 words)

	Speed of a Bacterium
		They move by means of gliding (e.g., Beggiatoa) or they don't move at all (e.g., cocci).
		The difference in surface tension between the back and front of this bacterium causes it to glide.
		Bacteria can reach speeds from 2 microns per second (Beggiatoa, a gliding bacteria) to 200 microns per second (Vibrio comma, polar bacteria).
	www.hypertextbook.com /facts/2000/ElaineKung.shtml (414 words)

	Drug, particularly an immunomodulator, containing non-fructifying, non-photosynthetic filamentous bacteria envelopes or ... (Site not responding. Last check: 2007-10-14)
		It should be noted that this definition of B. alba corresponds to the former names Beggiatoa arachnoidea, B. gigantea, B. leptomiformis, B. minima, B. mirabilis of Bergey's Manual, 8th Edition.
		There may be mentioned, moreover, the bacteria belonging to the genus Vitreoscilla which is known to be related to and often difficult to differentiate from the genus Beggiatoa.
		These characteristics do not permit, with the current techniques and bacterial taxonomy, to classify this strain which is at the interface of the two genera Beggiatoa and Vitreoscilla.
	www.patentstorm.us /patents/6190671.html (3391 words)

	American Journal of Botany, 53, 8, September, 1966 (Site not responding. Last check: 2007-10-14)
		It is visualized that the cell wall of this fungus consists of a core of chitin covered by or intermeshed with glucose-containing polymers.
		The Oxidation of Hydrogen Sulfide by Beggiatoa, 801-806
		There are indications that the wider forms of Beggiatoa tend more toward autotrophic growth than the narrower ones.
	www.botany.org /ajb/00029122_di001650.html (1782 words)

	Biggest Bacteria Ever Found
		Along with lead-author Schulz, the Science paper is co-authored by Timothy Ferdelman and Bo Barker Jorgensen, also of Max Planck Institute; Thorsten Brinkhoff of the University of Oldenburg in Germany; Mariona Hernández Mariné of the University of Barcelona in Spain; and Andreas Teske of the Woods Hole Oceanographic Institution in the United States.
		The hydrography there and off the coast of Namibia is very much alike: both feature strong ocean currents running parallel to a north-south continental shelf.
		The eastward motion of the turning Earth pushes the currents to the west and causes an upwelling of deep ocean water that is unusually rich with the nutrients on which phytoplankton -- and thus other marine organisms -- thrive.
	www.eurekalert.org /pub_releases/1999-04/AAft-BBEF-160499.php (1115 words)

	Basic Information for Beggiatoa spp. on anoxic sublittoral mud (CMU.Beg)
		A mat of the filamentous bacterium Beggiatoa spp.
		The anoxia may be a result of natural conditions of poor water exchange in some sea lochs (and many Scandinavian fjords) or artificially under fish farm cages from nutrient enrichment.
		Scavenging species such as Asterias rubens and Carcinus maenas are typically present where the habitat is not too anoxic but in extreme conditions of anoxia little survives other than the Beggiatoa.
	www.marlin.ac.uk /biotopes/Bio_BasicInfo_CMU.Beg.htm (250 words)

	Cosmetic/pharmaceutical compositions comprising microorganism culture media - US Patent 6242229 (Site not responding. Last check: 2007-10-14)
		The method of claim 1 wherein said non-photosynthetic filamentous bacterium belongs to a genus selected from the group consisting of Beggiatoa, Vitreoscilla, Flexithrix and Leucothrix.
		The method of claim 2 wherein said non-photosynthetic filamentous bacterium belongs to a genus selected from the group consisting of Beggiatoa, Vitreoscilla, Flexithrix and Leucothrix.
		A strain of Vitreoscilla filiformis is preferably employed according to the invention.
	www.patentstorm.us /patents/6242229.html (6922 words)

	International Society for Salt Lake Research
		As such, amoebae may be important in the cycling of carbon and nutrients in the Salton Sea.
		Genetic analysis, based on partial 16S rRNA sequences suggested considerable cryptic genetic variability among filamentous strains of similar or identical morphology and showed members of the form-genus Geitlerinema to be distributed among three major phylogenetic clades of cyanobacteria.
		Cyanobacterial mats, previously described from the Sea were, in fact, composed of both filamentous cyanobacteria and a roughly equivalent biomass of the sulfur-oxidizing bacterium Beggiatoa, indicating their formation in sulfide rich regions of the lake.
	www.isslr.org /news/newsone.asp?qnewsid=159 (4878 words)

	Reefs of the Gulf - Cruise Journal
		Next we ran back to the south to site TAMU-10 to look at the mound again and try to find the source of the feature that looks like a huge sediment flow emanating southward from this mound.
		Like some of the other large mounds we have explored already, this one showed a few signs of seepage, but no extensive chemo communities.
		We saw a patches of beggiatoa bacteria mats, mussel and clam shell beds, and a few small, stunted tubeworm bushes.
	gulftour.tamu.edu /cruise_journal_nr1/5_22_a.html (962 words)

	ML1 (Site not responding. Last check: 2007-10-14)
		They were studying 'very large' microbes: Bacillus megaterium is one of the largest true bacteria, and it also sometimes possesses a round spore; Centimeter-long Beggiatoa is a 'higher bacterium' which is photosynthetic and converts sulfide to sulfur; huge Spirogyra is eucaryotic with a distinctive helical single chloroplast.
		They made "wet-mount" slides of each under cover-slips, and set them on their desk as they set up their microscope.
		The Beggiatoa has blue-greenish cylinders as well as some sulfur granules that look like little fl diamonds.
	www.science-projects.com /ML-1.htm (399 words)

	BIOGEOCHEMICAL SIGNATURES AND COMMUNITY STRUCTURE OF A MICROBIAL (BEGGIATOA) MAT IN THE GAS HYDRATE SYSTEM OF ...
		Exposed gas hydrates and adjacent sediments in the Gulf of Mexico are often covered by patches of microbial mats.
		These mats are dominated by sulfide-oxidizing bacteria such as Beggiatoa, which play important roles in carbon and sulfur cycling linked to anaerobic methane oxidation and sulfate reduction underneath the mat layers.
		However, the community structure and major pathways for carbon cycling within the mats are not well understood.
	gsa.confex.com /gsa/2003AM/finalprogram/abstract_61113.htm (475 words)

	Cold Seep Communities-Section III
		Little is understood of the microbiology of cold seep habitats.
		Sulfur-oxidizing bacteria, especially the genus Beggiatoa, dominate the free-living bacteria of seeps in Monterey Bay.
		We have recently found that the central vacuole of Beggiatoa can have extremely high concentrations of nitrate (McHatton et al.
	bonita.mbnms.nos.noaa.gov /sitechar/cold3.html (854 words)

	Bacteria in chemical gradients
		If you intend to publish the images please observe the copyright (names of the persons taking the pictures added in the annotations):
		Beggiatoa spec tends to form white mats on top of sulfide-rich sediments.
		Here, long filaments at the edge of such a mat can be seen.
	www.rz.uni-frankfurt.de /~schauder/gradient/gradient.html (395 words)

	QUEST: More Info \| Maine Public Broadcasting Network (Site not responding. Last check: 2007-10-14)
		Beggiatoa are infauna (aquatic animals) that live in the substrate of a body of water, especially in a soft sea bottom.
		But as the organic load increases, the faunal diversity declines and the sea bottom becomes increasingly dominated by a small number of hardy, opportunistic species, usually polychaetes (marine worms), which may become very abundant.
		In grossly polluted situations, even these animals decline and the bottom becomes covered by a whitish blanket of bacteria (Beggiatoa) which obtain energy by oxidizing sulfide diffusing out of anoxic (oxygen-depleted) sediments.
	www.mpbn.net /quest/beggiatoa.shtml (1768 words)

	Microbial Diversity Course '94
		The green color is due to communities of cyanobacteria and algae.
		The fluffy white material is mainly large filamentous bacteria called Beggiatoa.
		Both photos were taken form the same location.
	www.umr.edu /~djwesten/woods_hole.html (187 words)

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