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Topic: Slime mold


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In the News (Tue 8 Dec 09)

  
  slime mold
Slime molds have complex life cycles that may be divided into an animallike motile phase, in which growth and feeding occur, and a plantlike, immotile, reproductive phase.
The "giant cells" of plasmodial slime molds have proved to be extremely useful in studies of cytoplasmic streaming (the movement of cell contents) because it is possible to see this happening even under relatively low magnification.
Not only do slime molds produce few resistant structures (except for spores, which are often overlooked or unidentifiable), but they live in moist terrestrial habitats, such as on decaying wood or fresh dung, where their potential for preservation is low.
www.daviddarling.info /encyclopedia/S/slime_mold.html   (1208 words)

  
 Slime Mold Photos
Slime molds are important heterotrophs in the decomposition of dead organic matter in temperate and tropical forests.
The plasmodium of this slime mold is on the glass of a freshwater tropical fish aquarium.
The plasmodium of a slime mold on a section of bogwood in a freshwater tropical aquarium.
waynesword.palomar.edu /slime1.htm   (1214 words)

  
 slime mold. The Columbia Encyclopedia, Sixth Edition. 2001-05
In the amebalike, or cellular, slime molds, up to 125,000 individual cells aggregate and flow together, forming a multicellular mass called a pseudoplasmodium that resembles a slug and crawls about before settling in a location with acceptable warmth and brightness.
In the case of the cellular slime molds, each spore released becomes a single ameba, which feeds individually until starving cells release a chemical signal that causes them to aggregate into a new pseudoplasmodium, and the process is repeated.
A slime mold is the cause of clubroot, a disease of cabbage and related plants.
www.bartleby.com /65/sl/slimemol.html   (561 words)

  
 Protista: Slime Molds
Slime molds spend most of their lives independently, but during food shortages, they swarm and aggregate into an enormous single cell.
Slime molds were once considered fungi, but unlike fungi, they can move, and their cell membranes are made of different stuff.
Cells in cellular slime molds retain their individual cell walls when they form a mass, so the visible slug is actually a collection of hundreds of thousands of individual cells joined together.
www.microbeworld.org /microbes/protista/slimemolds.aspx   (692 words)

  
 washingtonpost.com: Emergence: The Connected Lives of Ants, Brains, Cities, and Software
The slime mold behavior was so odd, in fact, that understanding it required thinking outside the boundaries of traditional disciplines — which may be why it took a molecular biologist with a physics Ph.D.'s instincts to unravel the slime mold's mystery.
When the environment is less hospitable, the slime mold acts as a single organism; when the weather turns cooler and the mold enjoys a large food supply, "it" becomes a "they." The slime mold oscillates between being a single creature and a swarm.
While slime mold cells are relatively simple, they have attracted a disproportionate amount of attention from a number of different disciplines — embryology, mathematics, computer science — because they display such an intriguing example of coordinated group behavior.
www.washingtonpost.com /wp-srv/style/longterm/books/chap1/emergence.htm   (3552 words)

  
 Dog Vomit Slime Mold - Plant of the Week
There are more than 700 species of slime mold known, with this one of the most common.
Slime molds are most often seen growing on top of the mulch in shrub beds where they can indeed look very much like dog puke.
Slime mold is a harmless, but admittedly ugly, thing.
www.arhomeandgarden.org /plantoftheweek/articles/mold_slime_8-25-06.htm   (502 words)

  
 Low Society
The cellular slime mold Dictyostelium discoideum is a social amoeba belonging to the neglected sixth kingdom of life, the Mycetozoa.
In the wild, unrelated strains or lineages of slime mold co-inhabit the same soils, and most readily aggregate with one another, forming genetic “chimeras”—named for the mythical fire-breathing beast of old that sported a serpent for a tail and the heads of both lion and goat.
Slime molds were housed in petri dishes, either alone or in mixtures of two, five, or 10 strains mixed together to yield aggregations with equal total numbers of cells.
www.rice.edu /sallyport/2004/winter/features/lowsociety/index.html   (2316 words)

  
 EXN.ca | Discovery
The slime mold's life is fascinating to biologists because it hovers on the edge between simple and complex, single-celled and multicellular.
Slime molds spend most of their life as single, amoeba-like organisms, prowling around on the forest floor consuming bacteria.
There is even one strain of slime mold that never even bothers to make a stalk on its own, but when streamed with another strain, will somehow force that strain to make a stalk for it.
exn.ca /Stories/2001/01/11/52.asp   (696 words)

  
 What is that Thing? - Slime Molds - Environmental Monitoring - Hands on the Land!
Slime molds are predators of fungi and bacteria and can be found in or on such substrates as dung, tree bark, decaying plant matter, soil and (in a few instances) aquatic habitats.
Dictyostelids, the cellular slime molds, move about as single, unattached amoebae for most of their lives until a chemical, produced by one of the amoebae, signals that the single life is over.
Slime molds are studied in laboratories as models for cell differentiation for cancer research.
www.handsontheland.org /monitoring/projects/slimemolds/slimemolds.cfm   (1616 words)

  
 Phenomena, Comment and Notes - Hunting Slime Molds
These are slime molds, or myxomycetes (myxos), of the kingdom Protoctista, the least understood of the five kingdoms of life, the others being animals, plants, fungi and bacteria (Smithsonian, July 1991).
Among the other enemies of slime molds are certain specialized beetles whose mandibles are modified into little scoops, all the better to shove creamy slime mold into their tiny gullets.
In any case, slime molds, said to be a billion or so years old, could be one of the first organisms formed by independent cells joining together.
www.smithsonianmag.si.edu /smithsonian/issues01/mar01/phenom_mar01.html   (1834 words)

  
 Slime Molds on Turfgrass, HYG-3074-96
Slime molds may be found on all cultivated and weedy grasses.
Slime molds are 'primitive' fungi that use the living turfgrass plant strictly for structural support.
Slime molds are most prevalent following prolonged periods of leaf wetness which favor the growth and development of the fungus.
ohioline.osu.edu /hyg-fact/3000/3074.html   (516 words)

  
 What IS this stuff?: The World of Slime Molds
Cellular slime molds, spend most of their lives as separate single-celled amoeboid protists, but upon the release of a chemical signal, the individual cells aggregate into a great swarm.
Slime molds were once considered to be animals due to their creeping phase.
Slime molds were once regarded as a fungus but later classified with the Protista.
serendip.brynmawr.edu /biology/b103/f01/web1/blucher.html   (1461 words)

  
 Slime Molds Factsheet
Slime molds are not plant parasites, but they may injure plants by covering and shading them.
Slime molds are frequently observed when they form large colonies on mulch around trees or shrubs.
Slime molds will disappear if left alone, but their unsightly appearance may necessitate more rapid removal.
plantclinic.cornell.edu /FactSheets/slimemold/slimemold.htm   (496 words)

  
 Slime Mold   (Site not responding. Last check: 2007-09-14)
The presence of slime mold on turfgrass is more of a curiosity than a problem.
Slime molds are primitive organisms that are considered fungi.
Slime molds usually last one to two weeks and often are observed in the same spot year after year.
www.extension.iastate.edu /Pages/plantpath/diseases/slime_mold.html   (146 words)

  
 Slime mold notes
On the positive side, slime molds are significant decomposers, and thus contribute to the maintenance of nutrient cycling.
When the food supply of a plasmodium is exhausted or diminished, the slime mold moves to an exposed portion of the substrate, and begins the formation of sporangia.
These slime molds differ from the plasmodial slime molds in that their vegetative phase consists of uninucleate amoebae, which, because of their size, are rarely observed.
www.cs.cuc.edu /~tfutcher/Slimemolds.html   (914 words)

  
 Slime Mold: The Blob on the Lawn   (Site not responding. Last check: 2007-09-14)
Slime mold is a primitive organism that has properties of both an amoeba and a fungus.
Once the slime mold mass is located on an upright object, it produces fruiting bodies that produce new spores.
Slime mold for the most part is a beneficial organism that decays dead plant material, returning nutrients to the soil.
gardenline.usask.ca /yards/slime2.html   (290 words)

  
 BBC News | SCI/TECH | When slime is not so thick
It means that some of the lowliest creatures in the plant and animal kingdoms, such as slime and amoeba, may not be as primitive as once thought.
Pieces of slime mould, an amoeba-like organism, were enticed through a 30-square-centimetre (five-square-inch) maze by the prospect of food at the end of the puzzle.
Slime mould is one of a group of single- to multi-celled organisms traditionally classified as fungi but having characteristics of both plants and animals.
news.bbc.co.uk /low/english/sci/tech/newsid_944000/944790.stm   (332 words)

  
 Myxomycetes: Overlooked Native Plants - Native Plant Society of New Jersey
If you want to grow a slime mold you can order a kit from most biological supply houses such as Carolina The basic supplies needed are a bunch of banana peels and a number of cake pans, plant trays, or plastic shoe boxes which are water tight.
Slime molds cultured indoors are generally maintained by using sterile techniques, sterile containers and sterile oatmeal.
Slime molds grown indoors are frequently bothered by contamination with fungi.
www.npsnj.org /myxomycetes.htm   (903 words)

  
 Slime Mold: A Fungus That Looks Like. . .Well, Dog Vomit - COLORADO STATE Extension
It's probably slime mold, a brightly colored fungus that spreads across wood mulches during periods when temperatures are warm and humidity is high.
Slime molds in the genus Fuligo are fungi that can appear bright yellow to orange, fading to brown and tan as they dry.
The slime molds that can grow in wood mulches are classed as 'beneficial' fungi and it's possible that they feed on harmful plant pathogenic fungi found in bark and wood chips, thus controlling the harmful fungi naturally.
www.ext.colostate.edu /pubs/columngw/grslime.html   (354 words)

  
 Slime Mold of Turf
Slime molds are commonly found in turf, ornamental, and garden plantings in the home landscape.
Slime molds are primitive organisms that feed on bacteria, other fungi and dead organic matter.
Slime molds often cause concern to homeowners because their reproductive phase is colorful and quite noticeable on plant parts.
www.oznet.ksu.edu /dp_hfrr/extensn/problems/slimmold.htm   (287 words)

  
 Slime Mold on Turf   (Site not responding. Last check: 2007-09-14)
Slime molds are fungi that grow on organic matter and during wet weather "ooze" up onto foliage.
Dormant periods in the life cycle of a slime mold are spent as spores in the soil and in the thatch.
Slime molds can be removed by vigorous raking, brushing, mowing, or hosing down with a fast stream of water.
www.ipm.iastate.edu /ipm/hortnews/1994/7-15-1994/slime.html   (189 words)

  
 Slime Mold - Myxomycetes - Colorado State University Cooperative Extension - Tri River Area
Known as slime mold, these fungi were once considered to be animals due to their creeping phase.
Slime molds often appear in the same area of the lawn year after year in four to six inch patches in various shades of purple, gray, white or cream.
Like nature's other organisms, slime molds should be looked at for their beauty and enjoyed as one enjoys a mass planting of dianthus or snapdragons.
www.colostate.edu /Depts/CoopExt/TRA/PLANTS/slime.html   (835 words)

  
 Slime mold won't hurt your grass
Slime mold can take on several different appearances depending on where it is growing and how long it has been around.
There are many genera of slime molds, and another common type is Fuligo, which forms circular patches of yellow to pink growth in landscape beds.
If this should occur, or the appearance is simply objectionable, sweeping with a broom easily breaks up slime mold growth, or the affected area may be sprayed with a mild detergent solution (1 tablespoonful of liquid detergent per gallon of water), which will destroy the growth.
msucares.com /lawn/garden/coast/02/020420.html   (385 words)

  
 Slime Ball! - Superintendents' Korner - 2001-06-13
Slime mold is an oddity that can occur sporadically on turfgrass.
Normal mowing, brushing or "washing" the slime mold patches is the major control.
Below are photos of slime mold on a creeping bentgrass green.
hcs.osu.edu /sk/notes/detail.lasso?id=143   (121 words)

  
 Minnesota Conservation Volunteer: The Elegance of Slime Molds: Minnesota DNR
Today, slime molds are the subject of international congresses, forays and expeditions, and web sites–all for science professionals as well as hobbyists.
Slime molds share characteristics with both animals and plants and are included in herbarium collections worldwide.
Small as they are, slime molds with their unusual forms and colors have managed to capture people’s imaginations, as reflected in many common names: wolf’s milk, yellow tinder blossom, Japanese lantern, bubble gum, spaghetti, red raspberry, chocolate tube, and tapioca.
www.dnr.state.mn.us /volunteer/janfeb03/slimemolds.html   (982 words)

  
 Slime Mold on Turfgrass
The presence of slime mold on turfgrass is more of a curiosity than a problem.
Slime molds are primitive organisms that are considered fungi.
Slime molds usually last one to two weeks and often are observed in the same spot year after year.
www.ipm.iastate.edu /ipm/hortnews/2000/7-14-2000/slime.html   (173 words)

  
 Introduction to the "Slime Molds"
Long classified together in the Myxomycophyta as part of the Fungi, slime "molds" are now known to be quite unrelated to the fungi.
Cellular slime molds are thus of great interest to cell and developmental biologists, because they provide a comparatively simple and easily manipulated system for understanding how cells interact to generate a multicellular organism.
Not only do slime molds produce few resistant structures (except for spores, which are often overlooked or unidentifiable), but they live in moist terrestrial habitats, such as on decaying wood or fresh cow dung, where their potential for preservation is low.
www.ucmp.berkeley.edu /protista/slimemolds.html   (469 words)

  
 What Are They
Members of this class are commonly referred to as slime moulds.
In the feeding stage, the slime moulds moves about as a mass of protoplasm (the plasmodium) feeding on bacteria, spores, and other organic matter much like an amoeba.
2 - Cellular slime moulds spend most of their lives as separate single-celled amoeboid protists, but upon the release of a chemical signal, the individual cells aggregate into a great swarm, known as a pseudoplasmodia and eventually muticellular slugs.
www.hiddenforest.co.nz /slime/what.htm   (467 words)

  
 A Biological Improbability, Alaska Science Forum
The newspaper headline read, "Scientists track slime mold in space." For a wild moment, I thought my early suspicions were confirmed: a critter as preposterous as a slime mold must come from outer space.
But no. The Associated Press story beneath the headline explained that slime molds were among the experimental organisms sent up from Earth on a recent space shuttle flight.
"Slime molds are really amoebas," she said, dismissing my ignorance and moving on to the next slide.
www.gi.alaska.edu /ScienceForum/ASF10/1072.html   (668 words)

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