Part of a group of parasitic microbes called microsporidia, Encephalitozoon hellem and Encephalitozoon romaleae are related to fungi and are commonly found in the intestines of vertebrates. In humans, they are associated with people with immune deficiencies.
The research team identified six genes in these parasites that were not found in any other microsporidian. Rather than the slow process of inheriting individual genes, E. hellem and E. romaleae have acquired a suite of genes that produce folate, a form of folic acid that helps cell division and growth."With their tiny, reduced genomes, microsporidia are models for gene loss," says lead author Patrick Keeling, a professor in UBC's Dept. of Botany.
"But here we found two species have actually acquired new genes that work together to make an essential nutrient that the parasites would otherwise have to steal from their host – opening up new tissues or even new hosts as targets for infection," says Keeling, director of the Centre for Microbial Diversity and Evolution and a member of Beaty Biodiversity Research Centre at UBC.
The process of horizontal gene transfer – the ability to acquire ready-made genes with specific functions from foreign genomes – is an important but often overlooked mechanism of evolution, according to Keeling. "It helps explain the relatively rapid evolution of these tiny organisms and their ability to infect and live off of a wide variety of hosts."
Brian Lin | EurekAlert!
Deep Brain Stimulation Provides Sustained Relief for Severe Depression
19.03.2019 | Universitätsklinikum Freiburg
AI study of risk factors in type 1 diabetes
06.03.2019 | University of Gothenburg
The Potsdam Echelle Polarimetric and Spectroscopic Instrument (PEPSI) at the Large Binocular Telescope (LBT) in Arizona released its first image of the surface magnetic field of another star. In a paper in the European journal Astronomy & Astrophysics, the PEPSI team presents a Zeeman- Doppler-Image of the surface of the magnetically active star II Pegasi.
A special technique allows astronomers to resolve the surfaces of faraway stars. Those are otherwise only seen as point sources, even in the largest telescopes...
Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters.
"This source of radiation lets us look at reality through a new angle - it is like twisting a mirror and discovering something completely different," says...
New research group at the University of Jena combines theory and experiment to demonstrate for the first time certain physical processes in a quantum vacuum
For most people, a vacuum is an empty space. Quantum physics, on the other hand, assumes that even in this lowest-energy state, particles and antiparticles...
Physicists in the EPic Lab at University of Sussex make crucial development in global race to develop a portable atomic clock
Scientists in the Emergent Photonics Lab (EPic Lab) at the University of Sussex have made a breakthrough to a crucial element of an atomic clock - devices...
Every year earthquakes worldwide claim hundreds or even thousands of lives. Forewarning allows people to head for safety and a matter of seconds could spell...
11.03.2019 | Event News
01.03.2019 | Event News
28.02.2019 | Event News
19.03.2019 | Physics and Astronomy
19.03.2019 | Life Sciences
19.03.2019 | Physics and Astronomy