Related Experiment Video
Updated: Aug 14, 2026
09:27
A Rapid Strategy for the Isolation of New Faustoviruses from Environmental Samples Using Vermamoeba vermiformis
Published on: June 4, 2016
Viruses and viruslike particles of eukaryotic algae
J L Van Etten1, L C Lane, R H Meints
1Department of Plant Pathology, University of Nebraska, Lincoln 68583-0722.
Microbiological Reviews
|December 1, 1991
Summary
Recent discoveries reveal large DNA viruses infecting eukaryotic algae, exhibiting similarities to animal iridoviruses and bacteriophages. These algal viruses possess unique DNA methylation patterns and enzymes, with potential applications in biotechnology.
Area of Science:
- Virology
- Phycology
- Molecular Biology
Background:
- Limited prior research on viruses infecting eukaryotic algae.
- Recent surge in discovery of large double-stranded DNA viruses targeting specific unicellular green algae.
Purpose of the Study:
- Characterize newly discovered algal viruses.
- Investigate their genomic and structural properties.
- Explore their potential ecological and biotechnological significance.
Main Methods:
- Large-scale virus cultivation and plaque assays.
- Analysis of viral DNA methylation patterns (5-methylcytosine, N6-methyladenine).
- Identification and characterization of virus-encoded DNA methyltransferases and restriction endonucleases.
Main Results:
- Discovery of numerous large double-stranded DNA viruses infecting specific eukaryotic algae.
- Viruses exhibit structural similarities to iridoviruses and genomic similarities to poxviruses.
- Identified varying DNA methylation levels and novel virus-encoded DNA modification enzymes.
- A distinct RNA virus shows affinities to plant viruses.
Conclusions:
- Algal viruses are diverse and possess unique molecular mechanisms, including DNA methylation.
- These viruses play roles in algal population dynamics and offer potential for biotechnological applications.
- Future research will focus on discovering new algal viruses and their ecosystem roles.
More Related Videos
Related Concept Videos
01:23Red Algae
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
01:21Green Algae
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
01:15Diversity of Protists I
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
01:27Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
01:29Viruses of Archaea
Archaeal viruses play a crucial role in the ecosystems of extremophilic archaea, particularly those belonging to the phyla Euryarchaeota and Crenarchaeota. By shaping host evolution and facilitating gene transfer, these viruses influence microbial communities and contribute to genetic diversity in extreme environments. The archaea they infect thrive in acidic hot springs and hydrothermal vents characterized by high temperatures and low pH. Archaeal viruses exhibit remarkable structural...
01:29Subviral Agents
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...