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DeCS
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Descriptor English:
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Phototrophic Processes
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Descriptor Spanish:
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Procesos Fototróficos
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Descriptor Portuguese:
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Processos Fototróficos
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Synonyms English:
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Growth, Phototrophic
Phototrophic Growth
Phototrophic Process
Phototrophy
Process, Phototrophic
Processes, Phototrophic
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Tree Number:
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G02.111.669
G03.800
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Definition English:
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Processes by which phototrophic organisms use sunlight as their primary energy source. Contrasts with chemotrophic processes which do not depend on light and function in deriving energy from exogenous chemical sources. Photoautotrophy (or photolithotrophy) is the ability to use sunlight as energy to fix inorganic nutrients to be used for other organic requirements. Photoautotrophs include all GREEN PLANTS; GREEN ALGAE; CYANOBACTERIA; and green and PURPLE SULFUR BACTERIA. Photoheterotrophs or photoorganotrophs require a supply of organic nutrients for their organic requirements but use sunlight as their primary energy source; examples include certain PURPLE NONSULFUR BACTERIA. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; HETEROTROPHY; chemotrophy; or phototrophy) to utilize different sources to meet their nutrients and energy requirements. |
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Indexing Annotation English:
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distinguish from PHOTOTROPISM
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See Related English:
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Autotrophic Processes
Chemoautotrophic Growth
Heterotrophic Processes
Nutritional Physiological Phenomena
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History Note English:
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2007
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Allowable Qualifiers English:
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Record Number:
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52486
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Unique Identifier:
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D052817
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Occurrence in VHL:
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Similar:
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DeCS
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