Tag Archives: bacteria

Can the chloroplast division machinery be evolutionarily dated back to bacteria?

The chloroplast, known to have originated around a billion years ago, is now one of the most recognizable characteristics of the plant cell. After the engulfment of the ancient cyanobacterium by the eukaryotic host cell, the former

Bacterial melanin in dark-colored sponges: Ecological significance and biomedical applications

Sponges are second dominant to corals in terms of biomass in many coral reef ecosystems. They play a significant role in maintaining the health of reef ecosystems through processing of waste generated in the system by continuous

Transcription modulation in Xanthomonas citri subsp. citri

Xanthomonas citri subsp. citri (X. citri) is a Gram-negative bacterium and the etiological agent of citrus canker, a severe disease that affects all the commercially important citrus varieties with worldwide distribution. The best method to control the

Many solutions to the same problem – cellular response to environmental challenges

When in contact with a hot object, our immediate response is to withdraw our hand. This instinctive reaction is an example of how external environment shapes our actions. In a similar fashion, bacteria are constantly monitoring and

The distressful life of FtsZ-deprived bacteria

Failure to assemble a division septum occurs in Escherichia coli cells when their supply of FtsZ is blocked. FtsZ, ancestor of eukaryotic Tubulin, is the main component of the divisome, the molecular machinery that drives septation in

Non-destructive inspection of metabolic status in bacteria using luciferase reporter

Bacteria are able to utilize various carbon sources, and change the intracellular metabolic fluxes depending on the availability. Whereas much effort has been taken to understand the underlying mechanisms, most parts of them are still elusive and

Rapid monitoring of bacterial growth and antibiotic susceptibility with quantum semiconductor biochips

Public Health authorities sound the alarm over the increasing bacterial resistance to antibiotics and project a dark picture back to the pre-antibiotic era. One avenue of solutions proposed is to identify the spectrum of susceptibility to antibiotics

In the pursuit of personalized medicine; New technologies to study the gut microbiome

Humans have a symbiotic relationship with microbes that reside in and on our bodies.  The human digestive tract contains as many as 1014 of bacterial cells, making it one of the densest and most diverse microbial communities

How bacteria swim

Bacteria are the smallest free-living (self-replicating) organisms. Most swim in aqueous media by rotating flagella, long thin filaments driven at their base by rotary motors. In most cases, the filaments are helical and extend out into the

Towards developing an ultimate optical method for bacteria detection

Microorganism detection is an essential task for wide range areas of human activities driven by economic and healthcare factors. Total Viable Count (TVC) method is a benchmark in microbiology, which is based on visual observation of the

Panorama on camp sensation of Bacteria

Since the first six decades of the twentieth century,the autonomous unicellular organisms, bacteria with unimaginable computational and evolutionary capabilities along with collective behavior has been running. Do not consider them to be small, simple and stupid because

Bacterial infection can be diagnosed and the severity evaluated using WBC count and left shift

In the event of bacterial infection, large numbers of neutrophils migrate from the blood to the infected site in order to destroy the invading microorganism and thus protect the host. The neutrophils removed from the peripheral blood

Attenuated bacteria as a DNA-delivery system for Chagas disease vaccine

Chagas disease caused by the parasite Trypanosoma cruzi, is considered by the World Health Organization (WHO) one of the most neglected tropical diseases worldwide. Prevalent in developing countries, it has a major social and economic impact in

Inhibitors that reduce the acquisition of antibiotic resistance

The rapid emergence of antibiotic resistance is a worldwide crisis, endangering the efficacy of antibiotic treatment. A recent article in Scientific America (December 16, 2014) highlights the importance of developing strategies for reducing antibiotic resistance and prolonging

Staphylococcal biofilms: building up “bacterial cities” through a proteinaceous matrix scaffold

Do you know that bacteria, microscopic organisms not visible by the human naked eye, can live in complex communities just like we humans do? They are perfectly able to stick together, grow and multiply in what is

Laser tool magnifies bacterial genotypic alteration as a colony phenotype

Gene manipulation tools are routinely used to create genetically engineered bacteria to understand the function of a gene or its role in pathogenesis in case of an infective microbe. Genetic engineering and manipulation of genes have been