Beggiatoa alba
Classification
Domain: bacteria; Phylum: Pseudomonadota; Class: Gammaproteobacteria; Order: Thiotrichales; family: Beggiatoaceae
Description and Significance
Description: Strains of colorless, filamentous, gliding bacteria, visible to the naked eye.
Size: Ranging from about 3.0 to 5.0 μm in diameter
Importance: Due to its ability to detoxify sulfide, this microbe plays a huge role in the sulfur cycle of coastal environments.
Genome Structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence?
Cell Structure and Metabolism
Interesting features of cell structure?: The colorless cells are disk-shaped or cylindrical, arranged in long filaments with a cell diameter that can measure between 12 and 160 micrometeres. contains a massive central vacuole. the filaments are surrounded by slime, giving them the ability to glide. The cell wall consists of five discrete layers external to the cytoplasmic membrane, the surface layer contains linear arranged longitudinal fibrils ranging from 10 to 12 nm in diameter, thin sections of sulfur inclusions contain 12 to 14 nm thick pentalaminar envelope.
metabolism: the metabolism of this species of Beggiatoa is facultative Methylotrophs within a fresh water strain.
How does it gain energy?:
what important molecules does it produce?:
Ecology
Ecology: just like other beggiatoa spp. beggiatoa alba are ubiquitous, forming giant mats in microoxic zones of freshwater, blackish, and marine sediments living in temperatures ranging from tropic to arctic levels. Filaments have been observed to form dense mats on sediments in estuarine, shelf, seep, and deep-sea hydrothermal vent environments appearing as a whitish layer.
Habitat: Lives at the oxic/anoxic interface of aquatic habitats in high concentrations of sulfide reaching toxic levels. these environments include cold seeps, sulfur springs, sewage contaminated water, mud layers of lakes,near deep hydrothermal vents and many others.
- symbiosis; biogeochemical significance; contributions to environment.
References
Author
Page authored by _Jakell Corbett_, student of Prof. Bradley Tolar at UNC Wilmington.
