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Encyclopedia > Phototroph

Phototrophs or photoautotrophs are photosynthetic algae, fungi, bacteria and cyanobacteria which build up carbon dioxide and water into organic cell materials using energy from sunlight. One product of this process is starch, which is a storage or reserve form of carbon, which can be used when light conditions are too poor to satisfy the immediate needs of the organism. Photosynthetic bacteria have a substance called bacteriochlorophyll, live in lakes and pools, and use the hydrogen from hydrogen sulfide instead of from water, for the chemical process. (The bacteriochlorophyll pigment absorbs light in the extreme UV and infra-red parts of the spectrum which is outside the range used by normal chlorophyll). Purple and green sulfur bacteria use light, carbon dioxide and hydrogen sulfide from anaerobic decay, to produce carbohydrate, sulfur and water. Cyanobacteria live in fresh water, seas, soil and lichen, and use a plant-like photosynthesis which releases oxygen as a byproduct. They depend on photosynthesis for both energy and carbon compounds. Leaf. ... A seaweed (Laurencia) up close: the branches are multicellular and only about 1 mm thick. ... Divisions Chytridiomycota Zygomycota Ascomycota Basidiomycota The Fungi (singular: fungus) are a large group of organisms ranked as a kingdom within the Domain Eukaryota. ... Subgroups Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular: bacterium) are a major group of living organisms. ... Orders The taxonomy of the Cyanobacteria is currently under revision. ... Carbon dioxide is an atmospheric gas comprised of one carbon and two oxygen atoms. ... A girl in a swimming pool full of water Water (from the Old English waeter; c. ... Prism splitting light Sunlight in the broad sense is the total spectrum of electromagnetic radiation given off by the Sun. ... Starch is a complex carbohydrate which is insoluble in water. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... Bacteriochlorophylls are photosynthetic pigments that occur in various bacteria. ... Hydrogen sulfide (hydrogen sulphide in British English), H2S, is a colorless, toxic, flammable gas that is responsible for the foul odor of rotten eggs. ... Note: Ultraviolet is also the name of a 1998 UK television miniseries about vampires. ... Image of a small dog taken in mid-infrared (thermal) light (false color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation. ... Chlorophyll is a green photosynthetic pigment found in plants, algae, and cyanobacteria. ... Families Chromatiaceae Ectothiorhodospiraceae Halothiobacillaceae The purple sulfur bacteria are a group of Proteobacteria capable of photosynthesis, collectively referred to as purple bacteria. ... Green sulfur bacteria - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... Anaerobic is a technical word which literally means without air, as opposed to aerobic. ... Carbohydrates are chemical compounds that contain oxygen, hydrogen, and carbon atoms. ... General Name, Symbol, Number sulfur, S, 16 Chemical series nonmetals Group, Period, Block 16, 3, p Appearance lemon yellow Atomic mass 32. ... Orders The taxonomy of the Cyanobacteria is currently under revision. ... Soil is material capable of supporting plant life. ... Crustose and foliose lichens on a wall A foliose lichen on basalt. ... Divisions Green algae Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ...


Photolithotrophic autotroph

Autotrophic organisms that use light energy, and inorganic electron source (eg. H2O, H2, H2S), and CO2 as their carbon source An autotroph (in Greek eauton = self and trophe = nutrition) is an organism that produces its own cell mass and organic compounds from carbon dioxide as sole carbon source, using either light or chemical compounds as a source of energy. ... Inorganic chemistry is the branch of chemistry concerned with the properties and reactions of inorganic compounds. ... Carbon dioxide is an atmospheric gas comprised of one carbon and two oxygen atoms. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ...


Examples:

  • Plants

Photoorganotrophic heterotroph

Heterotrophic microorganisms that use light energy and organic electron donors, and also employ simple organic molecules rather than CO2 as their carbon source. A heterotroph (Greek heteron = (an)other and trophe = nutrition) is an organism that requires organic substrates to get its carbon for growth and development. ... An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and gases containing carbon. ... An electron donor is a compound that gives up or donates an electron during cellular respiration, resulting in the release of energy. ...


Examples:

  • Purple non-sulfur bacteria

  Results from FactBites:
 
Optical Characteristics of the Phototroph Thiocapsa roseopersicina and Implications for Real-Time Monitoring of the ... (2965 words)
Optical Characteristics of the Phototroph Thiocapsa roseopersicina and Implications for Real-Time Monitoring of the Bacteriochlorophyll Concentration -- Gitelson et al.
Simultaneous phototrophic and chemotrophic growth in the purple sulfur bacterium Thiocapsa roseopersicina M11.
Phototrophic and chemotrophic growth of the purple sulfur bacterium Thiocapsa roseopersicina, p.
  More results at FactBites »

 
 

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