Photosynthetic Organisms
Photosynthetic Organisms - Related Videos
13:52
Studying the Supramolecular Organization of Photosynthetic Membranes within Freeze-fractured Leaf Tissues by Cryo-scanning Electron Microscopy
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Cited by 19 •
2016
Here we describe a procedure for studying freeze-fractured plant tissues. High-pressure frozen leaf samples are freeze-fractured and double-layer coated, yielding well preserved frozen-hydrated samples that are imaged using the cryo-scanning electron microscope at high magnifications with minimal beam damage.
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...
10:16
Molecular Probe Optimization to Determine Cell Mortality in a Photosynthetic Organism (Microcystis aeruginosa) Using Flow Cytometry
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Cited by 2 •
2016
Microbial populations contain substantial cell heterogeneity, which can dictate overall behavior. Molecular probe analysis through flow cytometry can determine physiological states of cells, however its application varies between species. This study provides a protocol to accurately determine cell mortality within a cyanobacterium population, without underestimating or recording false positive results.
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.
FAQs
Their interactions with microbial pathogens can activate innate defense responses, creating a biological connection between photosynthetic biology and immunology. These responses help explain how plants and algae respond to disease-causing microbes. Studying them reveals defense mechanisms that differ from, but remain relevant to, broader host-microbe research.
Pigments capture light and initiate electron transport, which produces ATP and reducing power for carbon fixation. Because these processes support the organism’s metabolism, they provide essential context for examining how infection affects plants, algae, or cyanobacteria. Linking energy conversion with disease mechanisms can clarify consequences of microbial attack.
Photosynthetic organisms produce metabolites that may influence microbial growth or host immunity. This makes their chemical outputs important when investigating whether an organism’s interaction with microbes favors pathogen proliferation, limits microbial growth, or alters immune activity. Such studies also support searches for metabolites with potential antimicrobial or immunological relevance.
Comparative research can clarify how disease mechanisms operate across different photosynthetic organisms. Plants, algae, and cyanobacteria provide related but distinct systems for examining microbial interactions, innate defense responses, and metabolite effects. The resulting comparisons can identify shared principles while preserving the biological context needed to understand plant and algal diseases.
Researchers examine interactions between these organisms and microbial pathogens, then relate observed disease mechanisms to innate defense responses and metabolite activity. The goal is not limited to describing infection; it is to connect microbial growth, host immunity, and organismal responses. This approach supports investigations of plant and algal disease biology.
This research may inform antimicrobial discovery, biotechnology, and environmental health investigations. Metabolites that influence microbial growth can guide searches for useful compounds, while knowledge of disease mechanisms can support biotechnology aimed at photosynthetic systems. Understanding these interactions also helps evaluate how microbial processes affect organisms and environments.