Phylogeny News and Research

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Phylogenetic analysis explores the evolutionary relationships between organisms and is a vital foundation for microbial studies. The development of reliable phylogenetic trees is an important step in developing new treatments and discovering the origins of eukaryotes, prokaryotes and archaea.

ASU to host inaugural meeting for brand new scientific society in Tempe, Arizona

Arizona State University will host a premiere opportunity to engage and mingle with luminaries in the burgeoning field of evolutionary medicine, a new interdisciplinary approach that is becoming an essential perspective in our view of disease, today's medical practice and the worldwide impact on public health as it hosts the Inaugural International Society for Evolution, Medicine & Public Health Meeting, March 19-21, 2015 in Tempe, Arizona.

17 Feb 2015

Structural properties have changed across bacterial families without putting limits on antibiotic resistance

Antibiotic-resistant bacteria have been emerging at an alarming rate. In some of the scariest of these pathogens, the mechanism responsible for the bacteria's ability to defeat antibiotics is a complex protein molecule embedded in the bacterial cell wall -- the enzyme β-lactamase.

20 Jul 2013

Study reveals strain of V. cholerae in Haiti cholera outbreak originated from single source

The strain of cholera that has sickened thousands in Haiti came from a single source and was not repeatedly introduced to the island over the past three years as some have thought, according to a new study published in mBio-, the online open-access journal of the American Society for Microbiology.

2 Jul 2013

Ancient DNA study provides information about origin of Justinianic Plague

From the several pandemics generally called 'pestilences' three are historically recognized as due to plague, but only for the third pandemic of the 19th to 21st centuries AD there were microbiological evidences that the causing agent was the bacterium Yersinia pestis.

13 May 2013

UC Riverside entomologists reconstruct the evolutionary history of assassin bugs

Assassin bugs, so named because these insects lie in ambush for prey that they attack with speed and precision, are found all over the world. Nearly 140 species of these bugs are blood-sucking; because they can bite humans around the mouth, they are also called kissing bugs. All kissing bugs can spread Chagas disease, a neglected tropical disease that imposes an economic burden on society.

26 Oct 2012

Researchers discover bats as reservoir of infections

Measles, mumps, pneumonia, influenza and encephalitis in man, Carré's disease in dogs, Ovine Rinderpest (PPR)… all of these diseases are caused by viruses from the same family: Paramyxoviridae. A vast international study, carried out in collaboration with IRD researchers and published in Nature communications has led to the discovery of more than 60 new species of these dangerous infectious agents, almost double the number previously recorded. This family of highly diverse pathogens affects all animals, from canines to fowl, cattle and humans.

25 Jul 2012

Study reviews role of gut microbes in nutrient absorption and energy regulation

Microorganisms in the human gastrointestinal tract form an intricate, living fabric made up of some 500 to 1000 distinct bacterial species, (in addition to other microbes). Recently, researchers have begun to untangle the subtle role these diverse life forms play in maintaining health and regulating weight.

7 Jun 2012

VEN occurs also in the insula of macaque monkeys

The anterior insular cortex is a small brain region that plays a crucial role in human self-awareness and in related neuropsychiatric disorders. A unique cell type - the von Economo neuron (VEN) - is located there. For a long time, the VEN was assumed to be unique to humans, great apes, whales and elephants.

22 May 2012

UCLA researchers sequence complete genomes of 17 strains of mice

For decades, laboratory mice have been widely used in research aimed at understanding which genes are involved in various illnesses. But actual variations in past gene sequences of mice were unknown. While researchers were able to determine that a variant affecting disease was in a certain region, they couldn't pinpoint the exact set of variants in that region.

27 Sep 2011

Scientists compare complete genome sequences of cowpox virus to prepare a phylogeny

The family of orthopox viruses is generally considered to comprise vaccinia virus, variola virus, cowpox virus and at least six other species. The various pox viruses are named after their usual hosts but this nomenclature may give rise to a false sense of security: most of them seem to have fairly catholic tastes and cowpox is able to infect not only cows but also a variety of other animals, ranging from mice to elephants as well as man.

15 Sep 2011

Mouse Phylogeny Viewer

Laboratory research has always been limited in terms of what conclusions scientists can safely extrapolate from animal experiments to the human population as a whole. Many promising findings in mice have not held up under further experimentation, in part because laboratory animals, bred from a limited genetic foundation, don't provide a good representation of how genetic diversity manifests in the broader human population.

30 May 2011

Scientists demonstrate similarity between individual development and phylogeny in level of gene expression

Similarities in the embryonic development of various animal species are also found at molecular level. The astonishing similarity in the appearance of embryos from different animal species was observed as far back as the 19th century by scientists such as Karl von Baer, Charles Darwin and Ernst Haeckel.

16 Dec 2010

Cultivated cucumber, melon originated in Asia and Australia

Sites of origin and regions of domestication of many of our most important cultivated plants are still unknown. The botanical genus Cucumis, to which both the cucumber (Cucumis sativus) and the honeydew melon (C. melo) belong, was long thought to have originated and diversified in Africa, because many wild species of Cucumis are found there. "A molecular genetic analysis has now shown that the wild populations that gave rise to melons and cucumbers originated in Asia", says LMU botanist Professor Susanne Renner.

22 Jul 2010

Phylogeny, Neoprobe announce collaboration to develop head and neck cancer detection technology

Phylogeny, the in situ company, and Neoprobe, a diversified developer of innovative biomedical surgical oncology products, announce their collaboration to develop head and neck cancer detection technology.

18 Jun 2010

New Supramap web-based application to track and stop disease outbreaks

Pathogens can now be easily tracked in time and space as they evolve, an advance that could revolutionize both public health and inform national security in the fight against infectious diseases. Developed by researchers that include scientists at the American Museum of Natural History, Supramap is a new, powerful, web-based application that maps genetic mutations like those among the different strains of avian influenza onto the globe.

13 Apr 2010

New study reveals that actual sex ratios can sway from the ideal

In a perfect world, for every boy there would of course be a girl, but a new study shows that actual sex ratios can sometimes sway very far from that ideal. In fact, the male-to-female ratio of one tropical butterfly has shifted rapidly over time and space, driven by a parasite that specifically kills males of the species, reveals a report published online on September 10th in Current Biology, a Cell Press publication.

11 Sep 2009

From the works of Shakespeare to the genomes of viruses

What does uncovering the true authorship of plays attributed to Shakespeare have to do with identifying our genetic ancestors or classifying new life forms?

11 Feb 2009

A challenge to the ancient origin of SIVagm based on African Green Monkey mitochondrial genomes

Monkey viruses related to HIV may have swept across Africa more recently than previously thought, according to new research from The University of Arizona in Tucson.

17 Jul 2007

Starvation activates MAP Kinase through the muscarinic acetylcholine pathway in Caenorhabditis elegans pharynx

New evidence in Cell Metabolism reveals a molecular mechanism that may play a general role in animals' ability to respond appropriately when starved.

7 Apr 2006

Method of Bone Analysis May Clarify Human Origins

Bones, it is said, tell tales, but in the case of the bones of hominids or human ancestors the story has become complex and convoluted, as paleoanthropologists try to decipher relationships between a host of similar species with subtly shifting characteristics in a spotty fossil record.

30 Mar 2004