Photosynthetic Bacteria
Photosynthetic Bacteria - Related Videos
03:54
Extraction and Purification of Plastoglobules from Photosynthetic Bacteria
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2025
Source: Shivaiah, K., et al. Plastoglobule Lipid Droplet Isolation from Plant Leaf Tissue and Cyanobacteria. J. Vis. Exp. (2022)The video demonstrates the isolation of plastoglobules from cyanobacteria. It begins with a culture of cyanobacteria and proceeds through cell disruption using mechanical force. The release of photosynthetic pigments indicates successful lysis. A sucrose step gradient is then used to separate cellular components by density, allowing low-density plastoglobules to form a...
09:45
Laboratory Simulation of an Iron(II)-rich Precambrian Marine Upwelling System to Explore the Growth of Photosynthetic Bacteria
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Cited by 2 •
2016
We simulated a Precambrian ferruginous marine upwelling system in a lab-scale vertical flow-through column. The goal was to understand how geochemical profiles of O2 and Fe(II) evolve as cyanobacteria produce O2. The results show the establishment of a chemocline due to Fe(II) oxidation by photosynthetically produced O2.
07:12
High-Throughput, In-Field Screening of Photosynthetic Efficiency in Crop Plants Using an Autonomous Robot
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2026
This manuscript describes a non-destructive, high-throughput approach for autonomous field measurements of photosystem II quantum efficiency, spectral reflectance, and plant architecture, enabling large-scale canopy photosynthesis phenotyping in agronomic and breeding field trials.
08:01
Environmental Sampling of Photosynthetic Microbes and Their Viruses: From Field to Lab
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2025
Here, we describe methods of sampling from the euphotic zones of marine and freshwater ecosystems to isolate cyanophages (and their hosts) and post-sampling processes that enrich single genotypes and characterize virus-host interaction dynamics.
10:08
Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
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Cited by 4 •
2017
This paper describes the assembly process and operation of a bench-scale photosynthetic bioreactor that can be used, in conjunction with other methods, to estimate pertinent kinetic growth parameters. This system continuously monitors the pH, light, and temperature using sensors, a data acquisition and control unit, and open-source data acquisition software.
FAQs
Pigment choice determines which wavelengths of light a bacterium can absorb and use for energy conversion. Some groups contain chlorophyll-like pigments, whereas others use bacteriochlorophylls. These differences help explain why related microorganisms can occupy distinct illuminated habitats and contribute to energy flow under different environmental conditions.
The main distinction concerns the electron donor used during photosynthetic electron transport and whether oxygen is produced. Oxygenic forms use water, while anoxygenic forms can use hydrogen sulfide or other donors. This metabolic difference allows photosynthetic bacteria to function in habitats where oxygen availability and chemical resources vary substantially.
Metabolic flexibility allows these microorganisms to remain active across diverse habitats, including illuminated waters, soils, and oxygen-poor environments. Their ability to use different electron donors links light capture with local chemical conditions. As a result, they can participate in carbon fixation and nutrient cycling across ecosystems that differ in oxygen status and available resources.
Their photosynthetic systems provide comparatively accessible biological models for examining how organisms convert light into chemical energy. Differences among groups also offer context for investigating microbial evolution and the emergence of varied photosynthetic strategies. Studying these organisms therefore connects molecular energy processes with broader questions about adaptation and biological diversity.
By carrying out carbon fixation and growing in environments with different oxygen and chemical conditions, photosynthetic bacteria influence the movement of carbon and other nutrients through ecosystems. Their activity in illuminated waters, soils, and oxygen-poor habitats connects microbial metabolism with ecological interactions, making them relevant to the functioning of diverse natural communities.
Research examines these bacteria for carbon fixation, pigment production, and biofuel generation. Carbon fixation supports interest in biological carbon-use processes, pigments provide products of biotechnological study, and biofuel research explores their capacity to convert light-driven metabolism into useful energy-related outputs. These applications build on their metabolic flexibility rather than treating them only as ecological organisms.
Photosynthetic bacteria connect cellular processes with environmental conditions because their growth and energy conversion depend on available light, oxygen status, and electron donors. Investigating them can therefore reveal how microbial traits shape ecological interactions and nutrient cycling. Their relevance extends from basic biology to environmental applications involving carbon fixation and the study of illuminated or oxygen-poor habitats.