Examples of bacteria

This example is from Wikipedia and may be reused under a CC BY-SA license.
The lesions caused by the activity of the scolytid create an entry site for secondary infection by bacteria and fungi.
On each slide, bacteria were viewed at 630x magnification and 10 square fields measuring 145 m per side.
However, these findings are restricted to a fraction of (known) cultivable and viable bacteria only.
The level of attaching bacteria were estimated by three different methods.
Indeed, flagella handedness has no effect on the tumbling of short bacteria, as they make many turns before ending at a new angle.
However, the distribution of bacterial cells inside the colony looked almost homogeneous, and the bacteria were moving around actively even deep inside the colony.
A candidate might be the variation of agar surface tension along the envelope due to some surfactant secreted by the bacteria.
Residual bacteria in the lawn were collected separately after removal of the glutaraldehyde.
Total fluorescence after solubilization of the dye and number of bacteria have been correlated in the test conditions.
None of the sequences could be assigned to obligate anaerobic bacteria.
The quantity of adhering bacteria was measured by a rapid method based on reactivity kinetics of a constitutive bacterial enzyme under substrate-saturated conditions.
The bacteria were more uniformly contrasted and had ruffled outer membranes.
When presented with a sudden influx of sugars, the bacteria within the plaque rapidly ferment this easily utilizable carbon source to excreted organic acids.
Bacteria behave as individual microorganisms with survival strategies directed towards reproductive success of a single cell, and not the whole population (colony).
Right inset illustrates the penetration depth by shading of the ellipses representing individual bacteria.
The bacteria are loosely packed with traces of extracellular material between the individual cells.
Quantification of bacteria in biofilms is usually performed by microscopy, after labelling of cells or growing cells on agar.
The outer membrane was ruffled on many of the bacteria.
The dark dot at the center of the colony is the area of the inoculated droplet that usually contains about 104 bacteria.
In addition to the host's diet at different intervals during the day, oral bacteria in vivo can also obtain nutrients from saliva.
The collective behavior of bacteria is significant in bioengineering, agriculture, medicine, dentistry and geosciences, among other disciplines.
Bacteria in need of that information, upon receiving the signal, emit pheromone-like peptides to declare their willingness to mate.
Unfortunately, such systems are liquid based, so it is possible that the attachment of bacteria makes very little contribution to the overall bacterial profile.
One of the main problems in any study of bacterial attachment is the accurate quantification of the number of bacteria on a surface.
If an agent inhibits the growth of a particular type of bacteria, a clear area, or halo, will appear around the disk containing the agent.
When a copper penny is placed on a nutrient agar medium in a petri dish plated with bacteria, microbes will not grow around the coin.
There are, for example, chapters covering plant growth promoting bacteria, sulphur- and iron-oxidizing bacteria, plant pathogens and mycorrhizal fungi.
Such bacteria are not detected by visual assessment of plant cultures and are propagated together with the plant material.
Lignans (enterodiol and enterolactone) are phytoestrogens derived from flaxseed through the action of bacteria in the colon on their precursor molecules.
However, in susceptible individuals, such as elderly and immunocompromised people and children, the bacterium may become pathogenic, spread to other locations and cause disease.
From
Wikipedia