chemoautotrophic


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chemoautotrophic

 [ke″mo-au″to-trof´ik]
capable of synthesizing cell constituents from carbon dioxide by means of energy derived from inorganic reactions.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

che·mo·au·to·tro·phic

(kē'mō-aw-tō-trof'ik),
Pertaining to a chemoautotroph.
Synonym(s): chemolithotrophic
Farlex Partner Medical Dictionary © Farlex 2012

che·mo·au·to·tro·phic

(kē'mō-aw-tō-trō'fik)
Pertaining to a chemoautotroph.
Synonym(s): chemolithotrophic.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

chemoautotrophic

or

chemotrophic

(of an organism) capable of manufacturing organic molecules from carbon dioxide and water by a process of CHEMOSYNTHESIS. For example, Thiobacillus oxidizes hydrogen sulphide to sulphur in order to produce the energy for chemosynthesis. Chemoautotrophic organisms are one form of AUTOTROPH, the other form displaying PHOTOTROPISM. Nitrate bacteria, such as Nitrobacter, and nitrite bacteria, such as Nitrosomonas, which contribute to the NITROGEN CYCLE, also grow chemoautotrophically Nitrobacter obtains the energy by oxidizing nitrite to nitrate, while Nitrosomonas oxidizes ammonia to nitrite.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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References in periodicals archive ?
Discovery of chemoautotrophic symbiosis in the giant shipworm Kuphuspolythalamia (Bivalvia: Teredinidae) extends wooden-steps theory.
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Olenid trilobites: the oldest known chemoautotrophic symbionts?
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Chemoautotrophic microbes (bacteria and archaea) have been found in deep-ocean sediments and at hydrothermal vents, where hot water flows out through newly formed volcanic rock at mid-ocean ridges.
Scientists say life thrives in porous rock deep beneath seafloor
Chemoautotrophic activity and nitrification in the oxygen minimum zone off Peru.
Nutrientes, oxigeno y procesos biogeoquimicos en el sistema de surgencias de la corriente de Humboldt frente a Peru
Studies on the chemoautotrophic iron bacterium Ferrobacillus ferrooxidans : an improved medium and a harvesting procedure for securing high cell yields.
Caracterizacion por Ardrea de microorganismos acidofilos aislados en minas de oro de Marmato, Colombia
There is extensive bibliography concerning prokaryotes in mining environments, such as the chemoautotrophic Acidothiobacillus ferrooxidans and other acidophilic Bacteria and Archeaon microorganisms (Evangelou and Zhang, 1995; Ehrlich, 1996; Banfield et al, 2000; Benner et al, 2000; Bond and Greg, 2000; Robbins, 2000; Johnson et al.
El papel de dos algas acidofilas como indicadores ecologicos de zonas de drenajes acidos de minas
Such a subsurface habitat could support the sort of anaerobic chemoautotrophic life that has been found on Earth.
Astrobiology
Consequently, since we had found that chemoautotrophic nitrification was the predominant nitrifying process in these acid pasture soils (Islam et al.
Nitrification activity in acid soils of north-eastern Victoria, Australia, as affected by liming and phosphorus fertilisation
Nitrification is a two-step process in which N[H.sub.4.sup.+] is first oxidized to N[O.sub.2.sup.-] by chemoautotrophic bacteria such as Nitrosomonas and the N[O.sub.2] is oxidized to N[O.sub.3.sup.-] by N[O.sub.2.sup.-]-oxidizing bacteria such as Nitrobacter.
Chapter 10 Soil biogeochemical cycles
They present different feeding modes (carnivores, herbivores, omnivores, deposit-feeders, symbiotic chemoautotrophic bacteria), this plasticity could be the reason of their success in many environments (Beesley et al.
Structure and composition of the polychaete community from Bahia San Quintin, Pacific Coast of Baja California, Mexico
Chemoautotrophic bacteria, such as those that live associated with the vents of the ocean ridges, are the only benthic primary producers that are not photosynthetic.
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In Thiobacillus ferrooxidans, an acidophilic chemoautotrophic bacterium sensitive to mercury ions, a group of mercury-resistant strains, which volatilize mercury, has been isolated.
Mercury Toxicity in Plants

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