Navigation Links
Cosmopolitan microbes -- hitchhikers on Darwin's dust
Date:12/4/2007

Scientists have analysed aerial dust samples collected by Charles Darwin and confirmed that microbes can travel across continents without the need for planes or trains - rather bacteria and fungi hitch-hike by attaching to dust particles.

In a paper published in Environmental Microbiology, Dr. Anna Gorbushina (Carl-von-Ossietzky University, Oldenburg, Germany), Professor William Broughton (University of Geneva, Switzerland) and their colleagues analysed dust samples collected by Charles Darwin and others almost 200 years ago. Geo-chemical analyses showed that these samples contained wind-fractionated dust from West Africa and some travelled as far as the Caribbean. Their results clearly show that diverse microbes, including ascomycetes, and eubacteria can live for centuries and survive intercontinental travel.

Desert storms stir up and deposit 50million tonnes of dust particles from the Sahara to the Amazon every year. The largest, single source of dust on the planet is the Bodl Depression in Northern Chad. As surface sand is whipped up into the air, larger particles are continually lost, and only the finest (< 10microns) reach the troposphere where they are blown on Trade Winds across the Atlantic. Similar fractionation of microbes also occurs, and only some survive travel across oceans.

These findings push forward our understanding of planetary microbial ecology. said Professor Broughton.

But could inter-continental spread of microbial hitch-hikers lead to the spread of contaminants or disease? Obviously, intercontinental spread of micro-organisms has been with us for a very long time, so unless land-use patterns in the Western Sahara have changed recently, disasters like the demise of coral in the Caribbean, cannot be ascribed to the intercontinental travel of desert bugs said Professor Broughton.


'/>"/>

Contact: Davina Quarterman
davina.quarterman@oxon.blackwellpublishing.com
01-865-476-307
Wiley-Blackwell
Source:Eurekalert

Page: 1

Related biology news :

1. Hungry microbes share out the carbon in the roots of plants
2. Microbes churn out hydrogen at record rate
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... receptor type 1 can inhibit voltage-gated calcium ... neurotransmitter release. However, some scholars demonstrated that ... Ca2+ influx and increase neurotransmitter release. Dr. ... Affiliated to Tongji Medical College, Huazhong University ... cell voltage-clamp and calcium imaging in cultured ...
(Date:7/11/2014)... brains of all vertebrates, information is transmitted through ... chemical signal to be passed from one brain ... most abundant type of synapse, can be either ... learning, memory, perception and cognition, and the balance ... function. For instance, every time we learn ...
(Date:7/10/2014)...  Pomerantz LLP has filed a class action ... "Company")(NYSE-MKT: PVCT) and certain of its officers.  The ... Middle District of Tennessee , ... consisting of all persons or entities who purchased ... 2013 and May 22, 2014, both dates inclusive ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3
... When battling an epidemic of a deadly parasite, less resistance ... A freshwater zooplankton species known as ... parasite that can infect more than 60 percent of the ... evolves quickly, balancing infection resistance and reproduction. A new ...
... 2012. Metformin, a drug widely used to treat Type II ... the University of Maryland Marlene and Stewart Greenebaum Cancer Center ... Research . Primary liver cancer, or hepatocellular carcinoma, is an ... and is the fastest-growing cause of cancer-related deaths among American ...
... March 30, 2012 The Phoenix Community Alliance (PCA) ... Genomics Research Institute (TGen), with its most prestigious award. ... City Starr Award for his work in improving the ... studying diseases such as Alzheimer,s, diabetes and many types ...
Cached Biology News:Weakness can be an advantage in surviving deadly parasites, a new study shows 2Weakness can be an advantage in surviving deadly parasites, a new study shows 3Commonly used diabetes drug may help to prevent primary liver cancer 2Commonly used diabetes drug may help to prevent primary liver cancer 3Phoenix Community Alliance honors TGen's Dr. Jeffrey Trent 2
(Date:7/10/2014)... , July 10, 2014 ... Dmitry Medvedev , presented Russia,s ... BIOCAD . The Company is developing a unique ... MabNext project BIOCAD develops a number of innovative drugs ... autoimmune diseases. The ceremony took place at the International ...
(Date:7/10/2014)... , July 10, 2014 Research ... addition of the "International Photonic Integrated Circuit ... Forecasts to 2019" report to their offering. ... The concept of photonic integration traces its ... century. The promise of photonic integration went unexplored ...
(Date:7/10/2014)... help in the fight against terrorism with the creation ... explosives with the use of light and special glass ... Actuators B: Chemical , the researchers describe a novel ... as low as 6.3 ppm (parts per million). It ... , "Traditionally explosives detection has involved looking for metals ...
(Date:7/10/2014)... basis of psychiatric disorders has been extremely challenging because ... but are insufficient to cause disease. Now investigators reporting ... journal Cell Stem Cell describe a strategy ... interact with other risk factors or environmental exposures to ... pinpoints a genetic variant that may predispose individuals to ...
Breaking Biology Technology:Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2Detecting trace amounts of explosives with light 2New strategy could uncover genes at the root of psychiatric illnesses 2
... Medivation, Inc.,(Nasdaq: MDVN ) today announced the ... regulatory and quality, Mohammad Hirmand, M.D., to vice,president, ... translational medicine., "As we enter Phase 3 ... the team to lead and advance our clinical ...
... Biosciences, Inc. (Nasdaq: MGRM ) today announced ... of Vice President, Research and,Development, Oncology. Dr. Parry ... programs, including the further,development of Monogram,s proprietary VeraTag(TM) ... platform - the HERMark(TM) Breast Cancer,Assay., Dr. ...
... with Canadian Division of Global Pharmaceutical,Company, ... BASKING RIDGE, N.J., March 24 /PRNewswire/ ... Millennium Biotechnologies Group, Inc.,(OTCBB: MBTG) announced today ... distribution agreement for Resurgex(R), its nutritional formula,for ...
Cached Biology Technology:Medivation Announces Senior Management Promotions 2Medivation Announces Senior Management Promotions 3Monogram Announces Promotion of Gordon Parry, PhD, to Vice President, Research and Development, Oncology 2Monogram Announces Promotion of Gordon Parry, PhD, to Vice President, Research and Development, Oncology 3Monogram Announces Promotion of Gordon Parry, PhD, to Vice President, Research and Development, Oncology 4Millennium Biotechnologies, Inc. Signs Marketing and Distribution Agreement with Ferring Pharmaceuticals 2Millennium Biotechnologies, Inc. Signs Marketing and Distribution Agreement with Ferring Pharmaceuticals 3
... Affinity Life Sciences can provide custom microplate coating using ... washes a variety of plate formats. We can also accommodate ... volume range of 0.5-320 L):, , ... 96 well microplate, ...
... The Bio-Plex maintenance, calibration, and ... custom 96-well plate used for ... calibration procedures using the Bio-Plex ... plate is for use with ...
... sequencing of plasmids and PCR amplicons. ... high performance sequencing pipeline which processes ... day. The key benefits we offer ... rapid turnaround, high sequencing pass rates ...
GLP-compliant, CLIA-certified DNA sequencing service. ASQ and SQA certified quality assurance staff. Auditors welcome....
Biology Products: