Related Experiment Video
Updated: Jul 13, 2026
09:14
An Improved and High Throughput Respiratory Syncytial Virus (RSV) Micro-neutralization Assay
Published on: January 26, 2019
Rhodovulum visakhapatnamense sp. nov
T N R Srinivas1, P Anil Kumar1, Ch Sasikala1
1Bacterial Discovery Laboratory, Centre for Environment, Institute of Science and Technology, JNT University, Kukatpally, Hyderabad 500 085, India.
Summary
A novel phototrophic bacterium, Rhodovulum visakhapatnamense sp. nov., was identified from tidal waters. This discovery expands the known diversity of Rhodovulum species within the Alphaproteobacteria class.
Area of Science:
- Microbiology
- Bacteriology
- Environmental Science
Background:
- Phototrophic bacteria play crucial roles in aquatic ecosystems.
- The genus Rhodovulum comprises several known species of phototrophic bacteria.
Purpose of the Study:
- To characterize and classify a newly isolated phototrophic bacterium.
- To determine the taxonomic relationship of the isolate to existing Rhodovulum species.
Main Methods:
- Isolation and cultivation of bacteria from tidal water samples.
- 16S rRNA gene sequencing for phylogenetic analysis.
- DNA-DNA hybridization for genotypic differentiation.
- Physiological and biochemical tests for phenotypic characterization.
Main Results:
- A novel Gram-negative, rod-shaped, phototrophic bacterium, strain JA181(T), was isolated.
- Phylogenetic analysis based on 16S rRNA gene sequences showed close but distinct relation to Rhodovulum sulfidophilum.
- DNA-DNA hybridization and phenotypic tests confirmed its distinction from known Rhodovulum species.
Conclusions:
- Strain JA181(T) represents a new species, Rhodovulum visakhapatnamense sp. nov.
- This finding contributes to the understanding of bacterial diversity in marine environments.
- The study provides a comprehensive taxonomic description of the novel species.
Related Concept Videos
01:25Rab Cascades
Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
01:27Diversity of Protists III
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
01:11Channel Rhodopsins
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
01:28Fungal Phylum Microsporidia
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...
01:31Transport Number
The transport number is the fraction of the total current carried by an ion in an electrolyte solution. It is defined as the ratio of the current carried by a specific ion to the total current flowing through the solution. The transport number, t, is central to understanding ionic mobility, which describes how fast an ion moves under the influence of an electric field. This link connects the physical behavior of ions in solution to the chemical processes that occur during electrochemical...
01:19Rh Blood Group
The Rhesus (Rh) antigen is crucial in determining blood groups and ensuring compatibility during blood transfusions.