Autotrophs
Autotrophs - Related Videos
06:43
Inoculating and Observing Arbuscular Mycorrhizal Cultures on Superabsorbent Polymer-Based Autotrophic Systems
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Cited by 1 •
2024
Here, we describe a simple and inexpensive technique for inoculating and observing arbuscular mycorrhizal fungi in superabsorbent polymer-based autotrophic systems.
01:14
The Carbon Cycle
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2019
Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle. Biological Carbon Cycle All...
08:13
A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
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Cited by 8 •
2015
A novel reactor design, coined a high density bioreactor (HDBR), is presented for the cultivation and study of high density microbial communities. Here, the HDBR is successfully applied in a photobioreactor (PBR) configuration for the study of nitrogen metabolism by a mixed high density algal community.
FAQs
In photosynthetic autotrophs, light energy drives the conversion of carbon dioxide and water into sugars. This pathway links energy capture with carbon incorporation into organic compounds, and in many environments it also results in oxygen release. Examining these inputs and outputs helps biologists connect cellular metabolism with ecosystem productivity and the availability of energy for food webs.
Chemosynthetic autotrophs obtain energy without relying on light by oxidizing inorganic molecules, including hydrogen sulfide or ammonia. This distinction matters because it allows carbon fixation to be associated with chemical energy sources rather than illumination. Comparing the two strategies helps biology describe how autotrophic metabolism can function across environments with different energy conditions.
Carbon fixation is the central bridge between inorganic carbon and the organic compounds used throughout ecosystems. By incorporating carbon dioxide into sugars or other organic material, autotrophs establish the carbon input that supports primary productivity. Their activity therefore connects cellular processes to broader carbon cycling and helps explain how ecosystem-level organic matter is generated.
Their production of organic compounds creates the primary energy and carbon source on which most ecosystems depend. Organisms at higher trophic levels obtain material and energy through food-web pathways that begin with this production. Consequently, changes in autotrophic activity can affect ecosystem productivity and the movement of carbon through biological communities.
Research on autotrophs links microbial metabolism and ecosystem productivity with global carbon and nutrient cycles. Their carbon fixation and, in many environments, oxygen release provide biological processes that scientists can examine when studying climate-related processes. This makes them relevant not only to organismal biology, but also to the large-scale functioning of Earth’s ecosystems.
Understanding autotrophic carbon fixation and energy-acquisition strategies can inform work in sustainable agriculture, biotechnology, and renewable bioenergy. These applications draw on the broader importance of producing organic compounds from inorganic substances, while biology research also uses autotrophs to connect microbial metabolism with ecosystem productivity, climate processes, and resource-related questions.