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Topic: Red alga


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  Algae Photos
This unique alga is able to reproduce very rapidly because each cell of the net in turn produces a new cylindrical net of small cells within it.
This is an excellent alga for studying life cycles in general biology and botany classes.
The red alga Gelidium pulchrum from the intertidal zone of San Diego County, California.
waynesword.palomar.edu /algae1.htm   (1693 words)

  
  Red alga - Wikipedia, the free encyclopedia
One red alga is a member of the red algae (Rhodophyta, pronounced /ˈrəʊdə(ʊ)ˌfʌɪtə/), which are a large group of mostly multicellular, marine algae, including many notable seaweeds.
Their plastids formed by direct endosymbiosis of a cyanobacteria, and in red algae are pigmented with chlorophyll a and various proteins called phycobilins, which are responsible for their reddish color.
The diverse eukaryotes that constitute the red algae have been the focus of numerous recent molecular surveys and remain a rich source of undescribed and little known species for the traditional taxonomist.
en.wikipedia.org /wiki/Red_alga   (444 words)

  
 Red alga - Biocrawler   (Site not responding. Last check: 2007-10-22)
The chloroplasts of red algae are bound by a double membrane, so presumably were acquired by direct endosymbiosis of cyanobacteria.
Most other algae have chloroplasts taken secondarily from one of these forms, and in particular a number of groups appear to have acquired them from red algae: heterokonts, haptophytes, cryptomonads, and dinoflagellates.
Molecular studies place the red algae in the kingdom Plantae; however, supraordinal classification has been largely confined to debate on subclass vs. class level status for the two recognized subgroups, one of which is widely acknowledged as paraphyletic.
www.biocrawler.com /encyclopedia/Red_alga   (501 words)

  
 Dr. Curt M. Pueschel - Department of Biological Sciences
(Oomycetes), a pathogenic parasite of the red alga Palmaria mollis (Rhodophyceae).
Ultrastructure of the fungus Petersenia palmariae (Oomycetes) parasitic on the alga Palmaria mollis (Rhodophyceae).
Ultrastructure of Verdigellas peltata (Palmellaceae, Chlorophyta), a deep-water, palmelloid alga with ferritin and trilaminar sheaths.
biology.binghamton.edu /pueschel/publications.htm   (720 words)

  
 Section B - Red algae
Red algae are unusual among the algae because they can include in their cell walls calcium carbonate which makes the plants hard and resistant to wear.
Red algae are cropped and grazed by herbivorous animals such as fish, crustaceans, worms, gastropods.
Red algae have some of the most complicated sexual cycles of any organisms, and some stages in their reproductive cycle are completely unknown.
www.reef.edu.au /asp_pages/secb.asp?FormNo=5   (487 words)

  
 Olympus MIC-D: Oblique Gallery - Polysiphonia Red Algae
Polysiphonia, a common genus of marine red algae, is red in color because of the pigment phycobilin, which masks the green color of the chlorophyll responsible for photosynthesis.
Red algae often attach to submerged stones or anchor to other marine plants and are able to withstand the wave and tidal forces of the intertidal zone.
These red algae are often used as vegetable substitutes for gelatin in puddings, ice cream, and toothpaste.
www.olympusmicro.com /micd/galleries/oblique/polysiphoniaredalgae2.html   (416 words)

  
 [No title]
SAG 110.80 (charophyte alga) Clcm.tric2 Calicium tricolor (ascomycete fungus) Clcm.tricl Calicium tricolor (ascomycete fungus) Clcp.calic Calicophoron calicophorum (trematode flatworm) Clcr.crnea Calocera cornea UC 1475111 (basidiocarp fungus) Cldp.albi2 Cladophora albida str.
BF-2000 ExsRigid Eriaxis rigida ExuPopu2 Exbucklandia populnea FallaxNeo Fallax neocaledonensis Farl.molli Farlowia mollis (red alga) FauGrand Fagus grandifolia FcaTuber Fridericia tuberosa Fced.nrcis Ficedula narcissina (narcissus flycatcher) FedRupic Fendlera rupicola Feld.felli Fellodistomum fellis str.
LFS2 KjeCrass Kjellmaniella crassifolia Klbm.flcc2 Klebsormidium flaccidum (charophyte alga) Klbm.flccd Klebsormidium flaccidum (charophyte alga) KluAest5 Kluyveromyces aestuarii KluAfric Kluyveromyces africanus KluBlat4 Kluyveromyces blattae KluDelp4 Kluyveromyces delphensis KluDobz3 Kluyveromyces dobzhanskii KluLodd4 Kluyveromyces lodderae KluMar14 Kluyveromyces marxianus KluMar15 Kluyveromyces marxianus KluMar16 Kluyveromyces marxianus KluPhaf4 Kluyveromyces phaffii KluPoly8 Kluyveromyces polysporus KluSpeci Kluyveromyces sp.
rdp8.cme.msu.edu /download/SSU_rRNA/SSU_Euk.alpha   (5113 words)

  
 Red alga: Facts and details from Encyclopedia Topic   (Site not responding. Last check: 2007-10-22)
The red algae (Rhodophyta) are a large group of mostly multicellular[For more info, click on this link], EHandler: no quick summary.
Dulse (palmaria palmata), also called dillisk or creathnach, is a red alga that grows along the northern coasts of the atlantic and pacific...
Agar is a galactose polymer (or agarose) obtained from the cell walls of some species of red algae or seaweeds (sphaerococcus euchema)...
www.absoluteastronomy.com /encyclopedia/r/re/red_alga.htm   (1333 words)

  
 Red Marine Algae
Of interest in this context are polysaccharides produced by some species of red algae; these compounds have shown promising activity against a variety of animal viruses [10-13].
Dextran sulfate and polysaccharides from marine algae, for example, have been found to be potent in vitro inhibitors of HIV types 1 and 2 [15,18-20].
In the current study, the activity of this red microalgal polysaccharide against the replication and the transforming ability of the retroviruses, Moloney murine sarcoma virus (MuSV) and Moloney murine leukemia virus (MuLV), was studied.
freedomantiviral.addr.com /red_marine_algae.htm   (7285 words)

  
 Supercritical Fluid Extraction of Halogenated Monoterpenes from the Red Alga Plocamium cartilagineum   (Site not responding. Last check: 2007-10-22)
Supercritical Fluid Extraction of Halogenated Monoterpenes from the Red Alga Plocamium cartilagineum
Supercritical fluid extraction (SFE) of the marine red alga Plocamium cartilagineum, which is known to contain complex mixtures of halogenated monoterpenes, was investigated.
Several halogenated monoterpenes isolated by conventional solvent extraction with methanol and purified by column chromatography were used as the reference compounds for the determination of the extraction efficiency in the SFE experients.
www.aoac.org /pubs/JOURNAL/2001/Sept_Oct/Supercritical_Fluid.htm   (231 words)

  
 Structural characterization of photosystem II complex from red alga Porphyridium cruentum retaining extrinsic subunits ...   (Site not responding. Last check: 2007-10-22)
Structural characterization of photosystem II complex from red alga Porphyridium cruentum retaining extrinsic subunits of the oxygen-evolving complex -- Bumba et al.
Structural characterization of photosystem II complex from red alga Porphyridium cruentum retaining extrinsic subunits of the oxygen-evolving complex
thylakoid membranes of the red alga Porphyridium cruentum was
content.febsjournal.org /cgi/content/full/271/14/2967   (4967 words)

  
 Galdieria sulphuraria Genome Project at MSU
Abstract: The Rhodophyta (red algae) are composed of the subclasses Bangiophycidae and Florideophycidae.
The cp-genome of C. caldarium cannot be readily aligned with that of Porphyra purpurea, a multicellular red alga, or Guillardia theta due to a displacement of a region of the cp-genome.
Abstract: The habitat of the acido- and thermophilic red algae Galdieria sulphuraria and Cyanidium caldarium was examined in acidic hot sulphur springs in the vicinity of Naples (Italy).
genomics.msu.edu /galdieria/references.html   (15615 words)

  
 Introduction to the Rhodophyta   (Site not responding. Last check: 2007-10-22)
Red algae are red because of the presence of the pigment phycoerythrin; this pigment reflects red light and absorbs blue light.
Some rhodophytes are also important in the formation of tropical reefs, an activity with which they have been involved for millions of years; in some Pacific atolls, red algae have contributed far more to reef structure than other organisms, even more than corals.
Algae: The Forgotten Treasure of Tidepools is an excellent exhibit at Sonoma State on California tidepool algae, including red algae.
www.ucmp.berkeley.edu /protista/rhodophyta.html   (345 words)

  
 Guampedia - Guam's Online Encyclopedia
Although the calcium carbonate rock-like alga Hydrolithon is normally not considered seaweed, it does belong to the Division Rhodophyta and is included in the total species counts of seaweeds for Guam.
The crust-like or rock-like coralline algae are most dominant on the reef margin where the breaking high-energy surf occurs.
The secondary metabolites in such seaweeds as Hormothamnium (blue-green alga) and Portieria (red alga) are noxious and serve as defense mechanisms against the numerous herbivorous fish and invertebrates that inhabit the waters around Guam.
www.guampedia.com /demo/Sample%20Entry_files/seaweeds/seaweeds.htm   (507 words)

  
 MIT Sea Grant | Introduced Species Descriptions
This bright pink or red alga has small, hook-like appendages arising from its branches.
This alga can grow up to 15.75 inches (40 cm) and has a hollow main stalk, which is soft and gelatinous.
It is bright to dark red in color and is found in shallow waters, occasionally on mussels or other seaweeds.
massbay.mit.edu /exoticspecies/exoticmaps/descriptions_intro.html   (1757 words)

  
 Monterey Bay Aquarium: Online Field Guide - Red coralline alga
Since these algae deposit calcium carbonate (limestone) in most of their cell walls, red corallines have the appearance and rough texture of coral.
Red coralline algae can be found in most marine habitats.
For instance, red articulated corallines growing in intertidal zones are vulnerable to trampling and other damage, so it’s important to tread carefully when you visit tide pools.
www.mbayaq.org /efc/living_species/print.asp?inhab=204   (310 words)

  
 Complete Sequence of the Mitochondrial DNA of the Red Alga Porphyra purpurea: Cyanobacterial Introns and Shared ...
The phylogenetic tree was inferred from an alignment of the concatenated protein sequences of Cob, Cox1, Cox2, and Cox3.
Animals, fungi, rhizopods, red algae, green algae/plants, jakobids, stramenopiles, and bacteria are indicated and grouped together by square brackets.
and animals, to the exclusion of red algae.
www.plantcell.org /cgi/content/full/11/9/1675   (7144 words)

  
 Seaweed
Primarily for Canaries with a maximum of melanin are successfully fed with algae as a supplement.
A supplement of red alga powder during moult is a 'must'.
Therefore, the feeding of the red algae is harmless to possible discolouration in yellow birds.
www.hansclassen.de /seaweed.htm   (933 words)

  
 The Protists
Periodically, they all break out of the red cells together bringing on the chills and fever characteristic of the disease.
Their closest relatives are the green algae and land plants.
However, the structure of the membranes in their chloroplasts is quite different from that of the green plants but resembles that found in the cyanobacteria.
users.rcn.com /jkimball.ma.ultranet/BiologyPages/P/Protists.html   (1882 words)

  
 Red Marine Algae and Herpes
One such casualty of the drug approval process is a red marine alga in the family of Dumontiaceae.
Research on antiviral carbohydrates from marine red algae indicate a high potential for low-cost, broad spectrum antiviral agents.
Although the effects of long term use of an alternative treatment such as the red marine alga, Dumontiaceae, has not been clinically substantiated, edible seaweeds have been consumed for thousands of years and are considered safe, nutritious, and beneficial.
www.herpes.com /redmarinealgae.shtml   (1423 words)

  
 Title of Invention: Method of causing somatic hybri dization between two species of algae
The ability to modify one species of algae by hybridizing the genetic material of a second species would permit the characteristics of the phycocolloid produced by the second species to be exhibited by the first species.
In another embodiment, a scion from one strain of non-filamentous algae is grafted onto a second strain of non-filamentous algae and the resulting graft is grown in a culture medium.
For example, the hybridization of a red algal species and a greenish pigmented red algal species might result in a hybrid shoot which is reddish green.
www.nal.usda.gov /bic/Biotech_Patents/1994patents/05365018.html   (4510 words)

  
 Red alga - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-22)
The red algae are a large group of mostly multicellular, marine algae, including many notable seaweeds.
Red algae are a traditional part of oriental cuisine—for instance nori—and are used to make certain other products like agar and food additives.
This page was last modified 01:53, 26 Aug 2004.
www.encyclopedia-online.info /Red_alga   (289 words)

  
 Harmful Algal Blooms Index
Algae are microscopic plants that are usually aquatic, unicellular, and lack true stems, roots, and leaves.
Species that cause red tide blooms belong to the group of algae called dinoflagellates.
The golden alga is a species in a different algal family called the Chrysophyta.
www.tpwd.state.tx.us /landwater/water/environconcerns/hab   (629 words)

  
 DOH: Red Tide
A red tide bloom is a higher-than-normal concentration of a microscopic alga (plant-like organisms).
People may experience respiratory irritation (coughing, sneezing, and tearing) when the red tide organism is present along a coast and winds blow its aerosol onshore.
However, red tide may cause some people to suffer from skin irritation and burning eyes.
www.ourgulfenvironment.net /RedTideData.aspx   (168 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
Benthic marine algae of the port of Ensenada, Baja California.
Seasonal variations of the green algae (Chlorophyta) from the northwest coast of the Baja California peninsula.
U.K. %A Austin, A.P. %A Pringle, J.D. %T Periodicity of mitosis in red algae.
ucjeps.berkeley.edu /guide/gb2003.rfr   (14782 words)

  
 www.seaweed.ie
Most of them are the green (1200 species), brown (2200 species) or red (6500 species) kinds shown on this page, and most are attached by holdfasts, which just have an anchorage function.
The main food species grown by aquaculture in China, Korea and Japan are Nori (Porphyra, a red alga), Kombu or Kunbu (Laminaria, a brown alga) and Wakame (Undaria, also a brown alga).
Marine algae may also be used as energy-collectors and potentially useful substances may be extracted by fermentation and pyrolysis.
www.seaweed.ie   (503 words)

  
 Search for products to control Red Alga (cephaleuros) based upon pesticides registered in various states to control Red ...   (Site not responding. Last check: 2007-10-22)
Red Alga (cephaleuros) is a 'pest' (an unwanted organism) that can be controlled through the use of pesticides.
Pesticides, such as products to control Red Alga (cephaleuros), are regulated by State Departments of Agriculture.
To find all products ever registered at EPA to control Red Alga (cephaleuros): www.kellysolutions.com/epadata (login as username: 'Guest' and password: 'Guest' - your results will be limited to 5 items).
www.kellysolutions.com /searchpests/Red_Alga.htm   (454 words)

  
 Drag, Drafting, and Mechanical Interactions in Canopies of the Red Alga Chondrus crispus -- Johnson 201 (2): 126 -- The ...
Effects of high-frequency light fluctuations on growth and photoacclimation of the red alga Chondrus crispus.
Okamura, B. The influence of neighbors on the feeding of an epifaunal bryozoan.
Mechanical adaptations to flow in freshwater red algae.
www.biolbull.org /cgi/content/full/201/2/126   (5715 words)

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