HOME >> BIOLOGY >> NEWS
NC State scientists confirm second toxic pfiesteria species

waste lagoon. During two years of testing by Burkholder and associate Howard Glasgow Jr.'s lab, as well as by an independent lab for careful corroboration, all the tests confirmed that the organism is toxic.

Researchers have discovered other Pfiesteria "lookalike" organisms, but P. shumwayae is the first truly Pfiesteria-like organism - besides P. piscicida - to be found harmful to fish.

Burkholder said that the life cycle and behavior of P. shumwayae are identical to those of P. piscicida. Like P. piscicida, the newly described species has a complex series of life stages, most of which are nontoxic. "So far, we've confirmed that 19 of its stages are similar to those of piscicida, and we believe that it's only a matter of time before we verify that the other stages are also the same," she said.

Most of those stages are nontoxic in both species. In the presence of live fish, however, several stages of both species generate toxins that stun the fish and cause open sores on their skin; the microbes then feed on the fish tissue and blood. Both also prefer to prey on the same kinds of algae when fish are not available, and can "steal" plant-like organelles from algae to masquerade as microscopic plants.

NC State researchers, however, found dissimilarities in the structure and the genetic makeup of the two species. Molecular probes identified a 3 percent difference between the two species' DNA. Glasgow spent 200 hours over two years mapping the surface of hundreds of Pfiesteria zoospores using a scanning electron microscope. In so doing, he found that many specimens had a different "fingerprint" - they had a four-sided structural plate on the outside of the cells where P. piscicida had a three-sided plate.

"The difference between these species is the difference between a diamond and a triangle," Burkholder explained.

Thus far, P. shumwayae has been found to overlap the geographic distribution of P. piscicida: The single-celled organisms inhab
'"/>

Contact: Kevin Potter
kevin_potter@ncsu.edu
919-515-3470
North Carolina State University
9-Mar-2000


Page: 1 2 3

Related biology news :

1. New Arizona State center brings science to policy on issues of water resources and urban growth
2. K-State, other universities to study how climate affects plant evolution
3. K-States National Agricultural Biosecurity Center receives $1.3 Million from Department of Defense
4. K-State professor combines love of teaching, research to examine eye development
5. K-State researcher working to improve alternatives to equine antibiotics
6. Lung cancer patients in Japan, United States react differently to the same chemotherapy regimen
7. K-State business researchers to help with major study on food supply veterinary medicine
8. K-State researchers share $1 million grant to study insect pests
9. UC Riverside professor to spend year with US State Department
10. American Lung Associations 2004 State of the Air report ranks cities and counties with dirty air
11. K-State soil carbon sequestration research playing role in climate change efforts

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/7/2016)... 2016   Veridium , a leader in ... new CEO James Stickland . Stickland, a ... experience, has served in senior executive roles for ... in expanding a pipeline of venture capital and ... recently served as managing director of U.K.-based fintech ...
(Date:12/2/2016)... , December 1, 2016 ... (Fingerprint, Voice), Future Technology (Iris Recognition System), Vehicle ... - Global Forecast to 2021", published by MarketsandMarkets, ... Million in 2016, and is projected to grow ... CAGR of 14.06%.      (Logo: http://photos.prnewswire.com/prnh/20160303/792302) ...
(Date:11/29/2016)... Nov. 29, 2016   Neurotechnology , ... object recognition technologies, today released FingerCell 3.0, ... recognition solutions that run on low-power, low-memory ... using less than 128KB of memory, enabling ... that have limited on-board resources, such as: ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... Eurofins announces the appointment of Sean Murray , ... Inc. (ESI). Mr. Murray will bring valuable expertise ... experience in leading international business teams. As the National Division Leader, ... uphold Eurofins, status as the global leader in bio-analytical testing services. ... , , ...
(Date:12/8/2016)... England , December 8, 2016 ... has expanded its customisable SureSeqâ„¢ NGS panel range with the ... allowing fast and cost-effective study of variants in familial hypercholesterolemia ... number variation (CNV) detection on a single small panel and ... hotspot content. This includes all exons for LDLR , ...
(Date:12/8/2016)... (PRWEB) , ... December 08, 2016 , ... ... finalists in the World Technology Awards. uBiome is one of just six company ... all categories. , In addition to uBiome, companies nominated as finalists in this ...
(Date:12/8/2016)... Fla. , Dec. 8, 2016  HedgePath ... company that discovers, develops and plans to commercialize ... its shares of common stock were approved for ... will begin trading on the OTCQX, effective today, ... qualify for the OTCQX market, companies must meet ...
Breaking Biology Technology:
Cached News: