Navigation Links
How algae 'enslavement' threatens freshwater bodies described by Hebrew University researcher
Date:8/12/2010

Jerusalem, August 12, 2010 How toxic, blue-green algae out-compete other organisms through a form of selfish "enslavement" -- and by so doing proliferate dangerously in freshwater bodies -- has been described by a researcher at the Hebrew University of Jerusalem.

In general, the increasing occurrence of toxic cyanobacterial (blue-green algae) blooms in freshwater bodies is a matter of growing international concern due to their detrimental impact on drinking water quality and, in extreme cases, causing death to humans, livestock and wild animals. Thus, the new Hebrew University research can be of value to water authorities seeking ways to control this algae infiltration.

A toxic blue-green alga known as Aphanizomenon ovalisporum was first detected in Lake Kinneret (Sea of Galilee) in 1994, and its presence has been noted each summer thereafter. The conditions promoting these toxic blooms and other toxin formations in freshwater bodies were not known.

However, now in a paper to be published online on Aug. 12 in Current Biology, Yehonatan Bar-Yosef, a Ph.D. student in Prof. Aaron Kaplan's group at the Alexander Silberman Institute of Life Sciences at the Hebrew University of Jerusalem, has suggested a novel mechanism to explain the ability of Aphanizomenon to form massive toxic blooms by overcoming competition from other microorganisms in the water. (Kaplan is the Bernice and Aaron Beare Family Professor of Environmental Plant Physiology.)

Aphanizomenon is known to produce the toxin cylindrospermopsin (CYN). Secretion of the CYN, Bar-Yosef found, induces phosphate-limitation responses in other microorganisms in the ecosystem, even in the presence of ample phosphate in the water. The phosphate mineral is an essential nutrient for growth in many organisms.

The result is that Aphanizomenon is able to attain a relative advantage in phosphate-absorption capability, thus gaining dominance in the competition for nu
'/>"/>

Contact: Jerry Barach
jerryb@savion.huji.ac.il
972-258-82904
The Hebrew University of Jerusalem
Source:Eurekalert

Page: 1 2

Related biology news :

1. Montana State researchers receive grant to study algae as a source of biofuel
2. Engineering algae to make fuel instead of sugar
3. Success for first outdoor, large-scale algae-to-biofuel research project in Nevada
4. Study links seabird deaths to soap-like foam produced by red-tide algae
5. Dust deposited in oceans may carry elements toxic to marine algae
6. Mighty diatoms: Global climate feedback from microscopic algae
7. Nanofarming technology harvest biofuel oils without harming algae
8. ISU researcher identifies protein that concentrates carbon dioxide in algae
9. Genes from tiny algae shed light on big role managing carbon in worlds oceans
10. Genes from tiny marine algae suggest unsuspected avenues for new research
11. Coralline algae in the Mediterranean lost their tropical element between 5 and 7 million years ago
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... ( Aug. 19, 2014 ) -- Scientists at the ... pick up and transfer single cells using a pipette ... They describe this engineering feat and preliminary test results ... the American Chemical Society . , "Studying single cells ... current biomedical research," said nanomedicine department. faculty member Lidong ...
(Date:8/19/2014)... KNOXVILLEToday,s students in college biology and other science ... in quantitative ways, and now they have a ... for the Life Sciences," published this month by ... National Institute for Mathematical and Biological Synthesis (NIMBioS), ... that can be used to explore and explain ...
(Date:8/19/2014)... a glass of fizzy soda knows that bubbles can ... finding with wide industrial applications, Princeton researchers have demonstrated ... the liquid as well. , "It is well known ... surprised, and fascinated, to discover that when we covered ... oil droplets into the water," said Howard Stone, the ...
Breaking Biology News(10 mins):Moving single cells around -- accurately and cheaply 2New textbook introduces undergraduates to mathematics for the life sciences 2Bubbling down: Discovery suggests surprising uses for common bubbles 2Bubbling down: Discovery suggests surprising uses for common bubbles 3
... September 2, 2010 Scripps Research Institute scientists have ... research into a wide range of health problems, including pain, ... published in Science Express, the advanced, online edition ... In the study, the Scripps Research scientists identify two proteins, ...
... unveiled a prototype model of the first implantable artificial ... the need for dialysis. The device, which would ... bioreactor to mimic the metabolic and water-balancing roles of ... effort by engineers, biologists and physicians nationwide, led by ...
... academic performance of adolescents will suffer in at least one ... if their DNA contains one or more of three specific ... biosocial criminologist Kevin M. Beaver of The Florida State University. ... components of academic performance during middle and high school, and ...
Cached Biology News:Scientists identify molecules involved in touch and other mechanically activated systems 2Scientists identify molecules involved in touch and other mechanically activated systems 3Scientists identify molecules involved in touch and other mechanically activated systems 4UCSF unveils model for implantable artificial kidney to replace dialysis 2UCSF unveils model for implantable artificial kidney to replace dialysis 3Low grades in adolescence linked to dopamine genes 2
(Date:8/19/2014)... , Aug. 19, 2014 CSSi, the leader ... recently announced the formation of the company,s Medical and ... the addition of Dr. William E. Gannon, Jr. ... http://photos.prnewswire.com/prnh/20140818/136957 The MCAB, with Dr. ... of therapeutic areas and set strategic goals for the ...
(Date:8/19/2014)... , Aug. 19, 2014 /PRNewswire/ - iCo Therapeutics Inc. ... today reported results of its Oral Amphotericin B ... reservoirs.  The study, conducted by ImmuneCarta®, the immune ... vitro effectiveness of Oral Amp B in ... in individuals despite intensive treatment with antiretroviral therapy. ...
(Date:8/18/2014)... A new therapy developed by researchers at the ... Medicine and Columbia University Medical Center (CUMC) may ... disease treatment. , The researchers demonstrated in ... could selectively inhibit blood vessel re-narrowing and simultaneously ... a balloon catheter to open narrowed or blocked ...
(Date:8/18/2014)... Aug. 18, 2014   Sterne, Kessler, Goldstein & ... Washington, DC , announced today that ... Review (IPR) with the U.S. Patent and Trademark ... of BioReference Laboratories, Inc. (Nasdaq: BRLI).  These IPR petitions ... by Myriad Genetics, Inc. These patents have been asserted ...
Breaking Biology Technology:CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 2CSSi Appoints Dr. William E. Gannon, Jr. to Newly Formed Medical and Clinical Advisory Board 3iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 2iCo Therapeutics Announces Positive Oral Amphotericin B Study Results 3Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3Sterne Kessler Files 11 IPR Petitions On Behalf Of GeneDx, Inc., Subsidiary Of BioReference Laboratories, Inc. 2Sterne Kessler Files 11 IPR Petitions On Behalf Of GeneDx, Inc., Subsidiary Of BioReference Laboratories, Inc. 3
... a provider of education products in Wisconsin Rapids, has ... John Stearns. , ,Generation21 lost $4.6 million before taxes ... said it had looked for strategic alternatives over the ... was its best option. , ,The company will record ...
... Schiefelbein has a warning for chief information officers: By 2007, ... lower-level business executives. The CEO of Paragon Development Systems ... to work to stay involved with the business side of ... a big change in a really short period of time," ...
... GE Healthcare said it has installed its ... organs, to be used exclusively by a cardiologist. , ,Round ... quickly scan patients' hearts and nearby arteries. GE said the ... quickly creating 64 images, LightSpeed builds up a three-dimensional view. ...
Cached Biology Technology:IT outsourcing remains on the horizon as companies focus on core business 2IT outsourcing remains on the horizon as companies focus on core business 3
MOUSE ANTI RABBIT T LYMPHOCTYES Immunogen: Rabbit Thymocytes...
Normal canine serum collected from healthy normal canines....
RABBIT ANTI HUMAN CYTOCHROME P450 1A1/2 Immunogen: Purified human CYP1A2 expressed in E.Coli ...
... Error-free cloning of BAC (100+kb), fosmid ... Greater insert stability than any othe BAC ... for high yields and easy recombinant DNA ... or transcription-free (pSMART VC) vectors for the ...
Biology Products: