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Hypothesis on the Synchronistic Evolution of Autotrophy and Heterotrophy
Trends in Biochemical Sciences, 2018All life on earth requires a source of energy and organic carbon. There has been a continuous debate on whether autotrophic or heterotrophic metabolism came first. A very similar discussion exists concerning the advent of oxygenic photosynthesis and aerobic respiration.
Kirstin Gutekunst
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Autotrophy in Groundwater Ecosystems [PDF]
, 2009 The major role in global net CO2 fixation plays photosynthesis of green plants, algae and cyanobacteria, but other microorganisms are also important concerning autotrophy; i.e. autotrophic microorganisms can be found in most bacterial groups (Eubacteria) and there are even numerous representatives within the Archaea. CO2 fixation is not only one of the
Kellermann, Claudia, Kellermann, C.S.
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Global Biogeochemical Cycles, 2010 Anthropogenic nitrogen autotrophy of a territory is defined as the nitrogen flux associated with local production of harvested crops and grass consumed by livestock grazing (in kg N/km(2)/yr).
Gilles Billen +2 more
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Limnologica, 2004 Lake Koronia, a Ramsar site, is shallow, polymictic, hypertrophic and until recently was aerially the fourth largest lake in Greece. Although exceeding 5 m in the past, lake depth has declined progressively from 3.8 m in 1980 to < 1 m in 1997, reducing ...
Thomas L Crisman, George C Zalidis
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Autotrophy and heterotrophy in root herniparasites
Trends in Ecology & Evolution, 1989More than 3000 species of flowering plants are at least partially parasitic, acquiring water and solutes from the host via haustoria. More than one third of all parasitic angiosperms - the root hemiparasites - possess green leaves and root systems.
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Autotrophy in Stream Ecosystems
BioScience, 1978where the import of organic matter from outside the system is the predominant feature. Little has been done to test the hypotheses derived from these systems against information obtained from other lotic systems in different vegetational regimes (biomes) or arising along a single river system from its source to the sea.
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No soup for starters? Autotrophy and the origins of metabolism
Trends in Biochemical Sciences, 1995In recent years, several alternatives to the classical prebiotic-soup model for the origin of life have been proposed. Among these, the theory of Wächtershäuser proposes that an archaic version of the autotrophic reductive citric acid cycle, driven by pyrite formation and contained on the resulting pyrite surface, was the earliest metabolic cycle, from
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Enzymes and genes of microbial autotrophy.
Microbiological sciences, 1990Ribulose 1,5-bisphosphate carboxylase/oxygenase and phosphoribulokinase are enzymes which are unique to, and essential for, the operation of the Calvin cycle. Biochemical and genetic studies of these enzymes in autotrophic bacteria are providing information on the evolution of autotrophy, regulation of CO2 assimilation and on the prospects of ...
G A, Codd, D, Vakeria
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