Navigation Links
A bug's life: Exceptional genomic stability yet rapid protein evolution in a carpenter ant mutualist

The recent surge in the number of microbial genome sequences available to the scientific community is allowing researchers to address interesting ecological questions and to observe how various genomic, evolutionary, and ecological forces interact to define an organism's role in the environment. Today, Dr. Jennifer Wernegreen's group from the Marine Biological Laboratory presents new data that support a fascinating model for genome evolution in bacteria that live inside insects.

The scientists show that symbiotic bacteria have undergone exceptionally fast rates of protein evolution despite having precisely maintained their genomic architecture over long periods of evolutionary time. In their report, published today in the journal Genome Research, the scientists discuss this model in the ecological context of host-symbiont interplay.

"Symbiosis is an important driver of evolutionary novelty and ecological diversity," explains Wernegreen. "Microbial symbionts in particular have been major evolutionary catalysts throughout the 4 billion years of life on earth and have largely shaped the evolution of complex organisms."

Symbiotic bacteria live in root nodules of leguminous plants, in gutless marine worms, in echinoderms such as starfishes and sea urchins, and in specialized cells of insects such as aphids and tsetse flies. Many symbiotic relationships are obligate; neither the bacterium nor its host can live without the other.

Wernegreen's group focused on the bacterium Blochmannia, which has lived inside Camponotus and related ant genera for the past 30 million years or more. The bacteria may utilize the ant host for basic metabolic functions, including the initiation of DNA replication. In turn, the microbes may synthesize certain nutrients that enable the ants to inhabit unique ecological niches and thrive on nutritionally unbalanced food sources. This mutualistic association is thought to contribute to the astounding ecological success
'"/>

Source:Cold Spring Harbor Laboratory


Page: 1 2 3 4

Related biology news :

1. Breathing easy: When it comes to oxygen, a bugs life is full of it
2. The shape of life: research sheds light on how cells take shape
3. Selecting life: Scientists find new way to search for origin of life
4. Lighting up life: Cold Spring Harbor Protocols presents tips for creating glowing plants
5. Enzyme shown to help protect genomic stability
6. New comparative toxicogenomics database
7. Scientists document complex genomic events leading to the birth of new genes
8. Study of genomic DNA leads to new advances in cancer diagnostics
9. Measuring the impact of post-genomics on Mediterranean populations
10. Genrate: a generative model that finds and scores new genes and exons in genomic microarray data
11. PHACCS, an online tool for estimating the structure and diversity of uncultured viral communities using metagenomic information
Post Your Comments:
(Date:9/30/2014)... have completed the first comprehensive numerical simulation of skeletal ... in an image as data points for the computer ... led by J.S. Chen, the William Prager Professor of ... UC San Diego, presented their findings on the development ... this month. Chen also gave a keynote speech about ...
(Date:9/30/2014)... September 30, 2014--Sea monkeys have captured the popular attention ... easily observable life cycle -- sold as dehydrated eggs, ... given little more than a tank of salt water. ... pattern: Like other zooplankton, brine shrimp vertically migrate in ... closer to the surface at night and retreating deeper ...
(Date:9/30/2014)... to tetrachloroethylene (PCE) in drinking water may increase ... to a new study led by a Boston ... study, published in the journal Environmental Health ... pregnancies among 1,766 women in Cape Cod, Ma., ... to the early 1980s by the installation of ...
Breaking Biology News(10 mins):First comprehensive meshfree numerical simulation of skeletal muscle tissue achieved 2Laser-guided sea monkeys show how zooplankton migrations may affect global ocean currents 2Contaminated water linked to pregnancy complications, BU study finds 2
... VA. (Jan. 25, 2012) --- A comprehensive investigation of ... forward in our understanding of how cocoa flavanols work ... benefits. Through the development of improved analytical methods, this ... of flavanols, which calls into question the reliability of ...
... -- Research!America,s Board chair, former Congressman John Edward Porter ... investment in basic research. , "America,s leadership is ... investments in discovery and development," said Porter. "We ... and Europe integrate science and technology into economic growth ...
... and aims to help residential, commercial and industrial building owners ... guide them through the best materials to use. ... research into practice by trialling a white roof on its ... talk about the energy consumption benefits of white roofs and ...
Cached Biology News:Recent study by Mars, Incorporated and partners underscores importance of metabolism in understanding health benefits of cocoa flavanols 2State of the Union speech: Promising outlook for research and innovation 2White roofs to make for cooler Melbourne buildings 2
(Date:10/1/2014)... Oct. 1, 2014 Pfanstiehl has announced ... EP), manufactured in the USA ... long been recognized for playing a key role ... body of evidence that media supplementation with mannose ... protein glycosylation," according to Dr. Christopher Wilcox ...
(Date:10/1/2014)... 30, 2014 The participants committed to ... to spending their own time adjusting, tweaking and testing ... designs were ready for judging. , “I enjoyed being ... thought leader. “The entries showed a commendable range ... characteristics of the print medium and the creativity of ...
(Date:10/1/2014)... September 30, 2014 In response ... tools to address sales, training and consumer engagement ... developed innovative mobile applications to turn their clients’ ... agency’s latest customized mobile app creations, are now ... , In partnership with Toyota, StudioPMG created a ...
(Date:10/1/2014)... (PRWEB) September 30, 2014 Award ... SoundConnect announces four new-hosted collaboration bundles that ... deliver high quality conferencing experiences for low, flat ... to choose from, businesses have optimized solutions to ... solutions include audio only minutes (1K, 5K, ...
Breaking Biology Technology:Pfanstiehl Launches cGMP-produced Mannose for Cell Culture Media Optimization & Glycoprotein Biosynthesis 2Array Architects Challenges Staff to Create with 3D Printer 2Digital Agency Studio PMG Launches New Case Studies on Website 2SoundConnect Launches New Audio, Web and Video Bundles 2
... Sabila Industrial Originally Certified ISO in January 2003 ... Any Company They Audited Performed at Such a ... High Quality Level" ... - Company Dedicated to Quality, IRVING, Texas, Sept. 6 Carrington,Laboratories, Inc. (Pink ...
... Allergan, Inc. has partnered with fashion designer Kara ... Faces in Fashion on a campaign called,"Project: Sweat ... medical,condition called severe primary axillary hyperhidrosis or excessive,underarm ... on women,s lifestyle,choices, as well as available treatment ...
... NPS,Pharmaceuticals, Inc. (Nasdaq: NPSP ) announced today that ... all of its outstanding 3.0% Convertible,Notes due 2008. The ... 4, 2007, unless extended. The tender offer, which is ... letter of transmittal, is not,subject to the receipt of ...
Cached Biology Technology:Carrington Reports on ISO 9001:2000 Inspection at Sabila Industrial in Costa Rica 2Carrington Reports on ISO 9001:2000 Inspection at Sabila Industrial in Costa Rica 3MultiVu Video Feed: Allergan, Inc. Partners With "Project Runway" Designer Kara Saun and Gen Art Fresh Faces In Fashion to Raise Awareness About Excessive Underarm Sweating 2NPS Pharmaceuticals Commences Tender Offer for 3.0% Convertible Notes Due 2008 2NPS Pharmaceuticals Commences Tender Offer for 3.0% Convertible Notes Due 2008 3NPS Pharmaceuticals Commences Tender Offer for 3.0% Convertible Notes Due 2008 4