• In the paper titled "Cheater-resistance is not futile" ("Star Trek" fans take note), they found Dictyostelium discoideum, amoebas that thrive on rotting vegetation in forest soil, mutate to keep "cheaters" at bay, forcing them out of the reproductive chain. (scienceblog.com)
  • Using complementary molecular biology approaches, including CRISPR-Cas9, we generated polyketide synthase ( pks5 ) inactivation and overproduction strains of the social amoeba Dictyostelium discoideum . (nih.gov)
  • Min Zhao, dermatology professor at the University of California, Davis, Peter Devroetes of Johns Hopkins University, and colleagues hope to unravel how these responses work by studying body cells and Dictyostelium discoideum , an amoeba that lives in soil. (futurity.org)
  • Dictyostelium is unusual because it spends part of its life crawling around as a single-cell amoeba, but occasionally multiple amoebae will come together to form a fruiting body. (futurity.org)
  • The amoeba enters through the nose, according to health experts. (abc15.com)
  • Other protozoa hoard all the nutrients or trigger inflammation - that's how the brain-eating amoeba damages tissue. (npr.org)
  • Amoeba belongs to the family of protozoa. (indianetzone.com)
  • Amoebas are single-cell, animal organisms, belonging to the protozoa family. (indianetzone.com)
  • But a small percentage of resistant amoebas refused to be pushed around, and over successive generations of growth those resistant strains came to dominate. (scienceblog.com)
  • They used special barcoded microplates developed by Tingrui Pan, professor of biomedical engineering at UC Davis, to screen hundreds of amoeba strains. (futurity.org)
  • image: The testate amoebae Lesquereusia epistomium is pictured. (eurekalert.org)
  • An International team from China University of Geosciences, University of York and Lomonosov Moscow State University have studied the impact of wildfire on testate amoebae -- one of the dominant microbial groups in peat bogs. (eurekalert.org)
  • Testate amoebae significantly affect biochemical processes in peatland ecosystems. (eurekalert.org)
  • Testate amoebae are unicellular organisms, largely enclosed by a shell. (eurekalert.org)
  • Presence of testate amoebae in a local ecosystem also has an effect on intensity of the silicon cycle. (eurekalert.org)
  • Some groups of testate amoebae (namely, that ones, which use silica plates for making their shells, laying these plates on the surface of the shell like roof tile) could "dissolve" solid silicon-containing components from the environment and produce out of them plates, used for constructing their shells. (eurekalert.org)
  • In other words, testate amoebae constitute one of the links in the silicon cycle. (eurekalert.org)
  • This provided the opportunity to compare communities of testate amoebae from parts exposed and non-exposed to fire. (eurekalert.org)
  • It was found out that fire led to significant changes in the structure of the testate amoeba community. (eurekalert.org)
  • At first testate amoebae are separated from a soil or moss substrate. (eurekalert.org)
  • Yuri Mazei comments on the project results: "In peatland columns there are often layers, containing charcoal, showing that the ecosystem burned at that time and these layers can contain testate amoebae. (eurekalert.org)
  • However, if you want to correctly reconstruct climate in such a layer, it's necessary to understand how testate amoeba communities respond to wildfire in current conditions. (eurekalert.org)
  • Unlike brain-eating amoebae, this parasite is common. (npr.org)
  • But a recent field experiment in Yellowstone National Park saw MBARI researchers Kevan Yamahara and Roman Marin III dodging hordes of tourists and herds of elk while searching for "brain-eating amoebae. (mbari.org)
  • Under unfavourable conditions like drying of the pond, or, in case of a parasite increased resistance of the host, the amoeba resorts to encystment for self-preservation. (indianetzone.com)
  • The bacteria were maintained therein even upon encystment of the amoebae (in the literature, you also find 'amoebas' or 'amebas', reflecting English's preference for the 3'-s to indicate the plural and its reluctance to use the œ), and ultimately returned to the aquatic habitat via lysis of their hosts. (asmblog.org)
  • Amoebas are unicellular protist microorganisms belonging to the genus amoeba of the family Amoebidae that contains five described genera. (hindawi.com)
  • Any of various one-celled aquatic or parasitic protozoans of the genus Amoeba or related genera, having no definite form and consisting of a mass of protoplasm containing one or more nuclei surrounded by a flexible outer membrane. (dictionary.com)
  • They came back very quickly with it was a parasitic amoeba," Jennifer said. (abc15.com)
  • Here, we shed light on natural products from eukaryotic microorganisms that have the ability to transition from single cells to multicellular organisms: the social amoebae. (nih.gov)
  • Free-living amoebas (FLAs) develop their lives in the environment and are characterized by the lack of a cell wall in the trophozoite stage, which allows them to extend their cytoplasm to mobilize, resulting in the formation of pseudopods, further enabling them to feed on smaller microorganisms, mainly bacteria or decaying particles. (hindawi.com)
  • any protozoan of the phylum Rhizopoda , esp any of the genus Amoeba, able to change shape because of the movements of cell processes (pseudopodia). (dictionary.com)
  • But one hypothesis is that the nibbling "creates a more spacious environment" for the amoeba to invade the intestine, Petri and his team write. (npr.org)
  • When the nutrient material has been digested and absorbed from the vacuole, which acts like a primitive intestine, the amoeba moves away, leaving behind the indigestible remnants. (indianetzone.com)
  • In times long past, highly evolved eukaryotes, for example biochemists, oc-ca-sio-nal-ly quipped that bacteria were nothing more than a bag of en-zymes. (asmblog.org)
  • Well, from the perspective of bacteria, one could return the com-pliment: eukaryotes, for example single-celled amoebae, are little more than a bag of bacteria. (asmblog.org)
  • Within a single cell, the amoeba contains all the capacities necessary to maintain animal metabolism. (indianetzone.com)
  • When water containing the amoeba enters the nose, the organism can travel to the brain and cause an almost-always fatal brain infection called primary amebic meningoencephalitis (PAM). (healthline.com)
  • This amoeba is found in warm to hot bodies of freshwater around the world, and is relatively common in the U.S. South. (mbari.org)
  • In work appearing today in Nature , Rice evolutionary biologists Joan Strassmann and David Queller join forces with BCM geneticist Gad Shaulsky to determine how altruistic mutants help preserve cooperative behavior by single-celled amoebas. (scienceblog.com)
  • 2021) list in their review of The Ecology and Evo-lution of Amoeba-Bacterium Interactions a whopping 35 bacterial species from various phyla that are known for non‑predatory in-ter-actions with one or more Acanth-amoe-ba species. (asmblog.org)
  • The scientists assumed that amoebae, making their shells out of sandgrains, are more resistant to high temperatures, since their shells are thicker and more solid due to these grains of sand. (eurekalert.org)
  • Now scientists have figured out how this amoeba makes us sick. (npr.org)
  • Commonly known as slime molds, these amoebas are not slimy and are not molds. (scienceblog.com)
  • While this amoeba can be found in many locations, it is a heat-loving organism, so it grows best at high temperatures, such as 115°F. (healthline.com)
  • Non‑predatory inter-actions' means that these bacteria do not simply serve the amoebae as food but have been found either as intracellular commensals, or as mu-tualists, or as pathogens. (asmblog.org)
  • Elsewhere in the world, such as Karachi, the capital city of Pakistan, he says, the presence of the "brain eating amoeba " in the water supply seems to be much larger. (dictionary.com)
  • With all current information, it is possible to speculate that the differences in amoebas could be associated with the presence or absence of flagella, developed with the expansion of these organisms to different substrates to seek favorable conditions promoting their survival, searching for nutrients from bacteria. (hindawi.com)
  • In the video above, amoebae with and without the PiaA gene crawl around in the presence of weak electric fields. (futurity.org)
  • however, few differences and morphological structures led to the lack of classification and differentiation between the diverse species of amoebas [ 9 ]. (hindawi.com)
  • The cyst consists of a chitinous shell with which the amoeba surrounds itself and at the same time divides itself into 2, 4 or 8 daughter cells, enclosed with the cyst. (indianetzone.com)
  • Amoebo-zoa (black) is the only group that solely consists of amoebae. (asmblog.org)
  • Not necessarily, as it turns out amoebas that cooperate for the benefit of all - and even die for the cause - bring their own genetic weapons to the fight. (scienceblog.com)
  • From time to time, a type of sexual reproduction, or conjugation between two individual amoebas, with some exchange of genetic material, occurs. (indianetzone.com)
  • To pull themselves along, amoebas extend temporary bulges from their cells. (dictionary.com)
  • They filmed a bunch of the amoebae munching down on both gut and red blood cells. (npr.org)
  • When conditions are again favourable, the cyst bursts open to release the contained cells, each of which becomes an individual amoeba. (indianetzone.com)
  • These conditions directly influence the structure of amoeba communities, mainly in aquatic-type environments [ 3 ]. (hindawi.com)
  • If you drink [contaminated] water, nothing will happen," he said, "because your stomach acid will kill the amoeba. (healthline.com)
  • While collecting water samples, the team had to work around travelers who flock to the river to soak its warm waters, apparently unconcerned about the (probably minor) risk of having their brains infected by amoebae. (mbari.org)
  • Mercifully, human invasion is rare, for the invader, an amoeba , destroys the brain tissue and produces death in from four to seven days. (dictionary.com)
  • Engel said he doesn't see drug companies developing a specific treatment to the amoebas anytime soon -- it's just too rare. (abc15.com)
  • Researchers from Rice University and the Baylor College of Medicine (BCM) are peeling back the layers of strategy that determine how colonies of social amoebas resist the efforts of cheaters to alter the balance of power. (scienceblog.com)
  • Cheaters may prosper in the short term, but over time they seem doomed to fail, at least in the microscopic world of amoebas where natural selection favors the noble. (scienceblog.com)
  • Now, she's on a mission to prevent others from catching the amoeba. (abc15.com)
  • The CDC has fact sheets for best ways to prevent catching the amoebas. (abc15.com)
  • If it can help prevent infections by brain-eating amoeba, so much the better! (mbari.org)
  • The first description of an amoeba was in 1826 as a membranous type of microorganism whose shape is modified to move in the environment [ 7 ]. (hindawi.com)
  • After that the flask with this suspension is intensively shaken up and passed through a number of filters so that only amoebae shells and small suspended particles are left. (eurekalert.org)
  • It continued to move outward, and on the map it appeared like a pseudopod extruded by an enormous amoeba . (dictionary.com)
  • Winifred Haun, a veteran local choreographer who has worked with Ameba as part of the troupe's outreach to other dance artists, admires that artistic commitment as well as their skill. (chicagotribune.com)
  • But Ameba has carved out a niche here in Chicago with its devotion to aerial work, mingled with a loyalty to pure dance. (chicagotribune.com)
  • A drummer we were working with looked at some work and said, 'It's like an amoeba,'" Jensen recalls. (chicagotribune.com)
  • Not nice: A gut-eating amoeba (green) nibbles on a live human cell (purple) under the microscope. (npr.org)
  • I was invited to see Paul when he performed at a very intimate gig at amoeba Records in L.A. a few years ago. (dictionary.com)