Navigation Links
They hunt, they kill, they cheat: Single-celled algae shed light on social lives of microbes
Date:1/18/2013

t other algae and other organisms competing for the same nutrients and sunlight on which the algae depend. The discovery of cheaters that don't bother to produce toxin, however, throws a wrench into this scenario.

"We are trying to understand the ecological side in these algae," Driscoll said.

"If you're a single cell, regardless of whether you make a toxin or not, you're just drifting through the water, and everything is drifting with you," Driscoll explained. "Producing toxins only makes sense if the entire population does it. Any given individual cell won't get any benefit from the chemicals it makes because they immediately diffuse away. It's a bit like schooling behavior in fish: A single fish can't confuse a predator; you need everyone else do the same thing." For that reason, he explained, the cheaters should have an immediate advantage over their "honest" peers because they can invest the energy and resources they save into making more offspring.

"Theory tells us cooperation should break down in these circumstances. If you are secreting a toxin and it's beneficial to your species, then everybody gets access to that benefit. In a well-mixed population where there is no group structure, natural selection should favor selfishness, and the cheaters should take over." But for some reason, they don't. An alternative explanation for toxicity becomes clear when toxic cells are observed alongside their competition under a microscope.

"They attack other cells," he said. "Using their two flagella, they swim up to the prey and latch on to it. Sometimes a struggle takes place, and more cells swim up to the scene, surround their victim and release more toxin, and then they eat it."

"These toxins might have evolved less as a means to keep competitors away and more like a rattlesnake venom. The algae might use it to stun or immobilize prey." Driscoll and his co-workers isolated the toxic and the non-toxic strains side by side from the same water sampl
'/>"/>

Contact: Daniel Stolte
stolte@email.arizona.edu
520-626-4402
University of Arizona
Source:Eurekalert  

Page: 1 2 3 4

Related biology news :

1. DNA analysis aids in classifying single-celled algae
2. A project to research biological and chemical aspects of microalgae to fuel approach
3. Algae biofuels: the wave of the future
4. Carbon is key for getting algae to pump out more oil
5. A nanoscopic look at the estuarys green algae
6. Viruses linked to algae that control coral health
7. Ecologist: Genetically engineered algae for biofuel pose potential risks that should be studied
8. U OF A expert pinpoints nutrient behind fresh water algae blooms
9. Oil from algae closer to reality through studies by unique collaboration of scientists
10. The slippery slope to slime: Overgrown algae causing coral reef declines
11. Algae can draw energy from other plants
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
They hunt, they kill, they cheat: Single-celled algae shed light on social lives of microbes
(Date:7/11/2014)... Brazil- In the brains of all vertebrates, information ... an electric or chemical signal to be passed ... which are the most abundant type of synapse, ... is crucial for learning, memory, perception and cognition, ... critical for brain function. For instance, every ...
(Date:7/10/2014)... , June 27, 2014  The American ... National Institute of Standards and Technology (NIST) and ... its academic research and forensic science expert members ... Board is an element of the NIST,s Organization ... are among the first appointments made to the ...
(Date:7/10/2014)... June 30, 2014  Aware, Inc. (NASDAQ: ... services, previously announced on June 26, 2014 that its ... of $1.75 per share, or approximately $40 million in ... 10, 2014 and a payment date of July 24, ... it had set an ex-dividend date for this special ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 2Ten Members of the American Academy of Forensic Sciences Appointed to Forensic Science Standards Board (FSSB) 3NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2
... raise a finger without your brain directing muscle cells, and ... well. A neuron sends a message, or neurotransmitter, to ... get the message, the receiving cell must have a receptor. ... receptor so it,s properly positioned to catch the message. ...
... gene that may confer susceptibility to pulmonary tuberculosis has ... and their collaborators in The Netherlands, Indonesia, United Kingdom, ... j PLoS Genetics , the scientists report that ... had been previously shown to recognize some factors from ...
... A new tool for investigating the rice genome has ... Pamela Ronald, professor of plant pathology. The inexpensive, publicly-available ... in the rice genome. Details are published this week ... In higher organisms, such as humans or rice plants, ...
Cached Biology News:Stabilizing force for good communication between neurons and muscle cells found 2Gene with probable role in human susceptibility to pulmonary tuberculosis identified 2
(Date:7/10/2014)... 10, 2014   Ceres, Inc . (Nasdaq: ... announced today financial results for the three months ended ... business. Ceres reported that the company and ... this growing season in Brazil, which concluded in June, ... sorghum evaluation areas for part of the growing season. ...
(Date:7/10/2014)... Using microscopic polymer light resonators that expand ... MIT,s Quantum Photonics Laboratory have developed new optical ... range. Optical sensors are ideal for detecting trace ... compact, lightweight nature, and immunity to electromagnetic interference. ... developed before, the MIT team conceived an extremely ...
(Date:7/10/2014)... quantum Hall effect in bilayer graphene and shown that ... an electric field. , The fractional quantum Hall ... sheets are exposed to large magnetic fields, is a ... electrons behave as a single system. However, while the ... details of this collective behavior remain not well understood, ...
(Date:7/10/2014)... for crude 3-D glasses, polarized glasses, and shutter ... devices, used to trick the brain into perceiving ... obsolete with the introduction of new holography technology ... doctoral students Yuval Yifat, Michal Eitan, and Zeev ... nanoantennas that could be used for security as ...
Breaking Biology Technology:Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9Swell new sensors 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3Projecting a 3-dimensional future 2Projecting a 3-dimensional future 3
... Microchip,Biotechnologies, Inc. (MBI) is pleased to announce that ... Biodiversity Institute of Ontario,University of Guelph, will be ... for the Apollo 100 STAR System. The Apollo ... system for DNA sample preparation for,sequencing. The System ...
... Remergent Skincare Line, FREEPORT, N.Y., April 8, ... the development and sale of skincare,products utilizing DNA ... investment round led by existing investor Trevi Health ... new capital is being used to fund the ...
... 8 Amsterdam,Molecular Therapeutics (Euronext: AMT), a leader in ... part of the newly created Next Biotech Index of,NYSE ... our company,for this index," said Ronald Lorijn, CEO of ... companies and will help investors to track,the performance of ...
Cached Biology Technology:Canadian Centre for DNA Barcoding to Participate in Microchip Biotechnologies Early Access Program for Microchip-Based DNA Sample Preparation and Cycle Sequencing 2Amsterdam Molecular Therapeutics Part of Next Biotech Index 2
IKKbeta/IKK-2 Polyclonal Antibody 100 ug affinity purified rabbit polyclonal antibody. Reacts with human. Tested in Western blotting....
1, 2 or 8 PreMixes are included as part of the FailSafe™ PCR System....
The Hybrid Hunter Yeast Two-Hybrid System uses the activation of reporter genes to indicate positive protein-protein interactions. Two reporters are used an auxotrophic marker and lacZ....
Sprague Dawley rats, 7-8 weeks of age, mixed gender; collected by exsanguination in Alsever's solution at 1:2 dilution...
Biology Products: