Featured Research

from universities, journals, and other organizations

Unusual microbes could hitch a ride with travelers, findings suggest

Date:
June 13, 2012
Source:
Society for General Microbiology
Summary:
A rare and unusual new species of yeast has been identified at three separate locations across the world. The findings suggest a link between the distribution of specialized microbes and human migrations. The novel strain of yeast has been named Saccharomycopsis fodiens and was isolated from flower-associated beetles in three geographically distant locations in Eastern Australia, Costa Rica and the Galapagos islands.

This is a scanning electron micrograph of Saccharomycopsis fodiens, showing its predacious appendages.
Credit: B. Schlag-Edler

A rare and unusual new species of yeast has been identified at three separate locations across the world, reported in the International Journal of Systematic and Evolutionary Microbiology. The findings suggest a link between the distribution of specialized microbes and human migrations.

The novel strain of yeast has been named Saccharomycopsis fodiens and was isolated from flower-associated beetles in three geographically distant locations in Eastern Australia, Costa Rica and the Galapagos islands.

Researchers from the Western University, Canada, the Federal University of Minas Gerais, Brazil, and the Catholic University of Ecuador isolated thousands of yeasts from sap beetles found on flowers all over the world. They only found S. fodiens three times, compared to other yeast species which occur predictably and abundantly in beetles. Interestingly, the yeast is parasitic to other yeasts, boring holes in their cell walls, leading to their destruction. It is also unusual in that it doesn't use sulphates for growth -- in contrast to most other yeasts.

The authors say the discovery of the species in such geographically distant locations provides clues about how micro-organisms spread across the globe.. "The collection sites for S. fodiens are compatible with the hypothesis that ancient Polynesians migrated southward from Taiwan and then eastward across the Pacific and eventually South America carrying sweet potato plants, whose flowers carry similar insects and yeasts," explained Professor Marc- Andrι Lachance who led the team of researchers.

"The global dispersal of micro-organisms remains poorly understood, and it is tempting to fit the problem to the "Everything is Everywhere" model," he said. "However, it is quite plausible that human migrations, along with the displacement of domesticated or commensal plants or animals, could account for the rapid dispersal of very specialized micro-organisms."

The findings should allow testable hypotheses to be formulated about the influence of human migrations over the global distribution of micro-organisms.. "We hope that yeast biodiversity researchers in other parts of the world will be on the lookout for this yeast species, so that our human migration hypothesis can be tested. This will improve our understanding of how microbes are dispersed," said Professor Lachance. "The next step for this research is to identify the centre of origin for S. fodiens. If it matches the supposed point of departure or passage of human migrations, this would provide further evidence for our theory."


Story Source:

The above story is based on materials provided by Society for General Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. M.-A. Lachance, C. A. Rosa, E. J. Carvajal, L. F. D. Freitas, J. M. Bowles. Saccharomycopsis fodiens sp. nov., a rare predacious yeast from three distant localities. International Journal of Systematic and Evolutionary Microbiology, 2012; DOI: 10.1099/ijs.0.043109-0

Cite This Page:

Society for General Microbiology. "Unusual microbes could hitch a ride with travelers, findings suggest." ScienceDaily. ScienceDaily, 13 June 2012. <www.sciencedaily.com/releases/2012/06/120613073102.htm>.
Society for General Microbiology. (2012, June 13). Unusual microbes could hitch a ride with travelers, findings suggest. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2012/06/120613073102.htm
Society for General Microbiology. "Unusual microbes could hitch a ride with travelers, findings suggest." ScienceDaily. www.sciencedaily.com/releases/2012/06/120613073102.htm (accessed July 23, 2014).

Share This




More Plants & Animals News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Michigan Plant's Goal: Flower and Die

Michigan Plant's Goal: Flower and Die

AP (July 22, 2014) — An 80-year-old agave plant, which is blooming for the first and only time at a University of Michigan conservatory, will die when it's done (July 22) Video provided by AP
Powered by NewsLook.com
San Diego Zoo Welcomes New, Rare Rhino Calf

San Diego Zoo Welcomes New, Rare Rhino Calf

Reuters - US Online Video (July 21, 2014) — An endangered black rhino baby is the newest resident at the San Diego Zoo. Sasha Salama reports. Video provided by Reuters
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) — A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
$23.6 Billion Awarded To Widow In Smoking Lawsuit

$23.6 Billion Awarded To Widow In Smoking Lawsuit

Newsy (July 20, 2014) — Cynthia Robinson claims R.J. Reynolds Tobacco Company hid the health and addiction risks of its products, leading to the death of her husband in 1996. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins