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:2/24/2015)... Research and Markets ( http://www.researchandmarkets.com/research/sxwl43/global_2d_gesture ... "Global 2D Gesture Recognition Market 2015-2019" report ... forecast the Global 2D Gesture Recognition market to ... period 2014-2019 The increased demand for ... of the major trends in the market. The ...
(Date:2/19/2015)... .19, 2015 Research and Markets ... the "Military Electro-Optical / Infrared Systems Market ... Platform - Forecast to 2020" report to ... systems market is expected to reach $16.35 billion ... This report segments the military electro-optical/infrared ...
(Date:2/13/2015)... 2015 ACT Genomics Co., Ltd., a ... transform cancer genomic information into precision diagnosis and ... raised US$ 8 million in the its first private ... Taipei, Taiwan , ACT Genomics has developed ... aim to implement next generation sequencing (NGS) and ...
Breaking Biology News(10 mins):Global 2D Gesture Recognition Market 2015-2019 with Cognitec Systems, CogniVue, eyeSight Mobile Technologies & PointGrab Dominating 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 2Military Electro-Optical / Infrared Systems (Image Intensification, Laser, Infrared) Market - Forecast to 2020: Featuring Profiles of the Market Leaders on this $16 Billion market 3ACT Genomics Raises $8 Million in its First Private Funding Round 2
... Dates in Press Release, TAMPA, Fla., Feb. ... a leader in electro-stun technologies announced,today that as ... Taser International (Nasdaq: TASR ) has noticed ... Systems, Inc. (Federal Case,CV07-0042-PHX-MHM) of Taser,s intent to ...
... interested in natural history but it also challenges those people ... life on Earth. Thats the view of Dr Robert Lambert, ... of Nottingham, who has just returned from the Antarctic in ... Antarctica Tour Operators (IAATO). Dr Lambert, who is a ...
... University of Missouri scientist Ray Semlitsch studies creatures most ... at night and thrive in the shallow, cool, wet ... A collaborative study, with MU graduate student Bill Peterman, ... biomass (total mass of an organism in an area) ...
Cached Biology News:Taser Notices Intent to Serve Subpoena for Information on Old NIJ Tests in Taser v. Stinger 2Taser Notices Intent to Serve Subpoena for Information on Old NIJ Tests in Taser v. Stinger 3Observing sustainable tourism in Antarctica 2Observing sustainable tourism in Antarctica 3Salamanders, headwater streams critical in food chain 2
(Date:3/3/2015)... --Research and Markets ( http://www.researchandmarkets.com/research/gxqhg9/gene_therapy ) ... report "Gene Therapy - Technologies, Markets and ... Gene therapy technologies are described in detail ... with genetically modified vectors. Gene therapy is an ... of administration as well as targeted gene therapy ...
(Date:3/3/2015)... 3, 2015  Synthetic Biologics, Inc. (NYSE MKT: SYN), a ... a focus on protecting the microbiome, announced today that ... at the 27th Annual ROTH Conference being held on March ... in Dana Point, CA. Mr. ... at 1:00 p.m. (Pacific Time). A live webcast ...
(Date:3/3/2015)... , March 2, 2015  Phillip Sharp, Institute Professor at ... of the Department of Biology and the Koch Institute for Integrative ... at Heritage Day , May 14, at the ... the Othmer Gold Medal since it was first awarded ... "In 1977 Phil Sharp gave the scientific world ...
(Date:3/2/2015)... 02, 2015 Resilinc released ... report which summarizes and analyzes nearly 700 unique ... EventWatch™ 24X7 global event monitoring and alert reporting ... a free trial period of the email service to ... that can negatively impact revenue, market share, customer satisfaction, ...
Breaking Biology Technology:Gene Therapy Market Report 2014-2024 - Technologies, Markets and Companies 2Gene Therapy Market Report 2014-2024 - Technologies, Markets and Companies 3Synthetic Biologics to Present at the 27th Annual ROTH Conference 2Phillip Sharp to Receive 2015 Othmer Gold Medal 2Phillip Sharp to Receive 2015 Othmer Gold Medal 3Resilinc Publishes 2014 EventWatch™ Supply Chain Disruption Annual Report 2Resilinc Publishes 2014 EventWatch™ Supply Chain Disruption Annual Report 3
... Bay, Wis. - Whenever the title executive vice president ... an established part of management. So it is with Judy ... National following a career that she thought was winding ... Green Bay-based provider of global transportation, logistics, and intermodal services, ...
... students are no longer interested in technology careers? , ... Area Technical College has won first place in ... beating four teams from Minnesota, and later advanced to ... third place. , ,The competitions were open to students ...
... a series of articles on raising capital from investors. This installment ... the time when raising equity capital, the offering terms are summarized ... When dealing with angel investors , it is typical ... prospective angel investors will want to negotiate the initial term sheet, ...
Cached Biology Technology:CIO Leadership Series: Judy Lemke, Schneider National 2CIO Leadership Series: Judy Lemke, Schneider National 3CIO Leadership Series: Judy Lemke, Schneider National 4CIO Leadership Series: Judy Lemke, Schneider National 5Capital-raising term sheets for angels and venture capitalists 2Capital-raising term sheets for angels and venture capitalists 3Capital-raising term sheets for angels and venture capitalists 4Capital-raising term sheets for angels and venture capitalists 5