Navigation Links
Genetic study of house dust mites demonstrates reversible evolution
Date:3/8/2013

estion may result in broad practical applications," he said. "Knowing phylogenetic relationships of house dust mites may provide insights into allergenic properties of their immune-response-triggering proteins and the evolution of genes encoding allergens."

The project started in 2006 with a grant from the National Science Foundation. The first step was to obtain specimens of many free-living and parasitic mitesno simple task given that some mite species are associated with rare mammal or bird species around the world.

The research team relied on a network of 64 biologists in 19 countries to obtain specimens. In addition, Klimov and OConnor conducted field trips to North and South America, Europe, Asia and Africa. On one occasion, it took two years to obtain samples of an important species parasitizing African birds.

A total of around 700 mite species were collected for the study. For the genetic analysis, the same five nuclear genes were sequenced in each species.

How might the ecological shift from parasite to free-living state have occurred?

There is little doubt that early free-living dust mites were nest inhabitantsthe nests of birds and mammals are the principal habitat of all modern free-living species in the family Pyroglyphidae. Klimov and OConnor propose that a combination of several characteristics of their parasitic ancestors played an important role in allowing them to abandon permanent parasitism: tolerance of low humidity, development of powerful digestive enzymes that allowed them to feed on skin and keratinous (containing the protein keratin, which is found in human hair and fingernails) materials, and low host specificity with frequent shifts to unrelated hosts.

These features, which occur in almost all parasitic mites, were likely important precursors that enabled mite populations to thrive in host nests despite low humidity and scarce, low-quality food resources, according to Klimov and OConno
'/>"/>

Contact: Jim Erickson
ericksn@umich.edu
734-647-1842
University of Michigan
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Genetics Society of Americas Genetics journal highlights for March 2013
2. U of M researchers utilize genetically corrected stem cells to spark muscle regeneration
3. Genetic risk factors for common eye disorder come into focus
4. U of M researchers identify genetic variation behind acute myeloid leukemia treatment success
5. Geneticist Svante Pääbo receives the $500,000 Gruber Genetics Prize
6. Genetic signs of alcoholism in women studied for the first time
7. Researchers in Manchester find genetic key to preventing spine tumors
8. When It Comes To Genetic Code, Researchers Prove Optimum Isnt Always Best
9. Life experiences put their stamp on the next generation: New insights from epigenetics
10. Cleveland Clinic develops clinical screening program for no.1 genetic cause of colon cancer
11. Epigenetics shapes fate of brain vs. brawn castes in carpenter ants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/30/2015)... , July 30, 2015 Cellecta, ... for gene function analysis and biomarker discovery, announced ... (sgRNA) Knockout Library targeting all human protein coding ... permanently "knock out" a gene,s function. Cellecta,s new ... high throughput screening tool so that researchers can ...
(Date:7/23/2015)... 23, 2015 Research and Markets ( ... "Global Outlook of the Biometrics Industry 2015 ... The global biometrics market is likely to ... applications owing to the uptake of multiple technologies ... that enhances the growth of biometrics in existing ...
(Date:7/20/2015)... 20, 2015  Acuity Market Intelligence,s latest research ... of Commerce and Privacy" forecasts that between 2014 ... will be downloaded to smart mobile devices by ... market is projected to generate more than $67.9 ... seven-year forecast period.    "Biometrics is ...
Breaking Biology News(10 mins):CELLECTA, INC. Announces Launch of Human Whole Genome CRISPR Knockout Library 2Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2
... cousin of the humble mustard plant, scientists at the ... big surprise while investigating how plants respond to attacks ... "Contrary to what we thought we'd find, our experiments ... concert with one another in tug-of war or teeter ...
... statistical method is a more reliable way to map ... potential cancer treatment targets, according to new Brown University ... a promising new tool for tracing human gene connections, ... other diseases. Results appeared this week in the online ...
... the humble mustard plant, scientists at the University of ... while investigating how plants respond to attacks from disease ... what we thought we'd find, our experiments showed that ... one another in tug-of war or teeter totter-fashion to ...
Cached Biology News:FDA approves more generic AIDS drugs 2FDA approves more generic AIDS drugs 3Researchers develop promising new gene network analysis method 2UNC plant researchers discover proteins interact to form hair-trigger protection against invaders 2UNC plant researchers discover proteins interact to form hair-trigger protection against invaders 3
(Date:8/3/2015)... ... ... Nine field days to promote practices that improve soil health will take place ... , the field days will demonstrate how changing certain practices, such as adding cover ... Brent Bible has practiced no-till farming and planted cover crops on his farm in ...
(Date:8/3/2015)... , Aug. 3, 2015 /PRNewswire/ - RepliCel Life Sciences ... company focused on the development of autologous cell therapies, announced ... presenting at the InvestMNT conference held in Minneapolis, ... AM local time. Hall,s presentation will highlight RepliCel,s 18-month milestones ... in Europe , clinical data from both ...
(Date:7/31/2015)... ... July 31, 2015 , ... ... detection and quantification of partially hydrolyzed gluten in foods, has been accepted by ... the method “Partially Hydrolyzed Gluten in Fermented Cereal-Based Products by R5 Competitive ELISA,” ...
(Date:7/30/2015)... ... 2015 , ... The 2015 Market Research Report on the Global Propanol ... global Propanol market with a focus on the Chinese situation. Major companies included in ... ISU Chemical, Sanofi, Royal Dutch Shell, LG Chem and Zhejiang Xinhua Chemical. , The ...
Breaking Biology Technology:Soil Health Field Days Kick Off Throughout Midwest 2Soil Health Field Days Kick Off Throughout Midwest 3RepliCel Presenting at InvestMNT Investor Conference in Minneapolis 2RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 3
... law firm here has teamed up with an IT ... affecting the health care industry. , , Reinhart Boerner ... Networks, Inc., of Franklin are offering the packaged ... security requirements of the Health Insurance Portability and Accessibility ...
... pitch their businesses at the upcoming BIO Mid-America ... now listed as presenters at the Sept. 21-23 forum, ... ,The forum, created through a collaboration of nine state ... showcases biotech and medical device product and platform companies. ...
... -- GenTel BioSurfaces, Inc., of Madison has ... technology for biomolecules and labeling agents, GenTel announced on ... Linkage System labeling reagents of Kreatech Biotechnology BV ... diverse kit formats. The kits are validated for use ...
Cached Biology Technology:Three more Wisconsin firms to present at venture forum 2
... Serial Analysis of Gene Expression (SAGE) ... technology. Agencourt offers a cost-effective outsourcing ... and LongSAGE libraries. Agencourt's SAGE sequencing ... project turnaround and long Phred20 read ...
... experimental process of determining the nucleotide sequence ... Sequencing is based on Sangers enzymatic method ... cycle sequencing reactions. The resulting fluorescent products ... instrument controlled by a computer and the ...
... Bio-Plex maintenance, calibration, and validation ... 96-well plate used for hands-free ... procedures using the Bio-Plex suspension ... is for use with Bio-Plex ...
Methylation analysis of gene promoters using bilsulfite treatment of DNA and comparative DNA sequence analysis. Probe design and PCR included....
Biology Products: