Navigation Links
Variable light illuminates the distribution of picophytoplankton
Date:12/18/2007

Tiny photosynthetic plankton less than a millionth of a millimeter in diameter numerically dominate marine phytoplankton. Their photosynthesis uses light to drive carbon dioxide uptake, fueling the marine food web over vast areas of the oceans. A new study published in this weeks PLoS ONE by post-doctoral researcher Dr Christophe Six and a team of scientists from MountAllison University, Sackville, New Brunswick, Canada, illuminates how the environment regulates the distributions of these ecologically important species.

Dr Doug Campbell, Canadian Research Chair in Environmental Processes and co-author explains, "Phytoplankton are entrained in the water column and are thus subject to rapid changes in light as they mix through the upper layer of the ocean."

Dr Christophe Six adds, Phytoplankton need light for photosynthesis and survival, but surprisingly this light also inactivates a key component of the photosynthetic apparatus, photosystem II. This Photoinactivation of photosystem II decreases photosynthesis and can even kill cells, unless they can counteract the damage through repair, which requires nutrients.

We found the picophytoplankton species isolated from different regions of the ocean have different abilities for this repair, and therefore have different abilities to tolerate increases in light. Their repair capacities are consistent with the different light and nutrient regimes in their local environments; species from deep ocean regions with stable light and low nutrients have very limited repair capacity, but species from coastal regions with more variable light and higher nutrients are more able to cope with variable light through rapid repair.

This result indicates that picophytoplankton species tolerance of exposures to high light can help to explain how these organisms are distributed throughout the ocean. The group measures the rates of photoinactivation and the rates of the counteracting repair in a
'/>"/>

Contact: Doug Campbell
dcampbell@mta.ca
Public Library of Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. Clemson scientists shed light on molecules in living cells
2. September Geology and GSA Today media highlights
3. Highlights from the September 2007 Journal of the American Dietetic Association
4. Genome study shines light on genetic link to height
5. Pig study sheds new light on the colonisation of Europe by early farmers
6. Researchers developing device to predict proper light exposure for human health
7. AGU journal highlights -- Sept. 6, 2007
8. IDEMA Reveals Program Highlights for DISKCON USA 2007
9. Men shed light on the mystery of human longevity, study finds
10. Zebrafish to shed light on human mitochondrial diseases
11. UT researcher sheds new light on hybrid animals
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" ... the growing mobile commerce market and creator of the ... patent 62/198989 for ELECTRONIC CRYPTO-CURRENCY MANAGEMENT METHOD ... to advance crypto-currencies such as Bitcoin into the consumer ... way to manage all payments.  The ...
(Date:7/27/2015)... SAN JOSE, Calif. , July 27, 2015 ... leading developer of human interface solutions, today announced ... ClearPad ® touchscreen solution for its stylish ... controller for its proven reliability, low power and ... with a wet finger. Huawei designers also required ...
(Date:7/23/2015)... -- Research and Markets ( http://www.researchandmarkets.com/research/rzzp3v/global_outlook_of ) has ... of the Biometrics Industry 2015 " report ... biometrics market is likely to witness significant growth ... the uptake of multiple technologies available. The year ... growth of biometrics in existing applications as well ...
Breaking Biology News(10 mins):NXT-ID Patents Electronic Crypto-Currency Management Technology 2NXT-ID Patents Electronic Crypto-Currency Management Technology 3NXT-ID Patents Electronic Crypto-Currency Management Technology 4Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3Global Outlook of the Biometrics Industry 2015 2Global Outlook of the Biometrics Industry 2015 3
... This is the impressive result of a study carried out ... De Simoni of the Mario Negri Institute in Milan, Italy ... University of Lausanne. The study appears in the April 18th ... Public Library of Science, PLoS ONE. , Stroke is the ...
... years, ecologists from the Centre of Environment and Hydrology ... Lycaenid butterfly whose caterpillars live as parasites inside colonies ... the nurse ants. One of the peculiar features of ... the caterpillars complete development within one year. The rest ...
... Jan. 23 State of the Union address, President George Bush ... oil by requiring the production of 35 billion gallons a ... times the current target set by Congress of 7.5 billion ... fuels derived from biological material. Currently, the main biofuel used ...
Cached Biology News:Some caterpillers just don't want to grow up 2Cellulosic ethanol: Fuel of the future? 2Cellulosic ethanol: Fuel of the future? 3
(Date:8/3/2015)... ... August 03, 2015 , ... The synthetic rubber ... get such derivatives as ethylbenzene, a precursor to styrene, used to make styrene-butadiene ... industry for the production of tyres and other components. Thus, growth in the ...
(Date:8/3/2015)... Md. , Aug. 3, 2015   Intrexon ... will release first half and second quarter 2015 financial ... th , 2015.  The Company will host a conference ... and provide a general business update. The ... US) and 1-412-902-4262 (International), and asking to join the ...
(Date:7/31/2015)... Texas (PRWEB) , ... July 31, 2015 , ... ... report, offering competitive market analysis and premium industry insights on the global resorcinol ... based on a collective study of vivid market scenarios and analysis of primary ...
(Date:7/30/2015)... , July 30, 2015   GenoSpace ... for the interpretation and analysis of genomic and ... Fischer has joined the company as Vice ... - http://photos.prnewswire.com/prnh/20150730/250931 "GenoSpace ... to integrate, interpret, analyze and explore complex sets ...
Breaking Biology Technology:World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 3Intrexon to Announce First Half and Second Quarter 2015 Financial Results and Host Conference Call on August 10th 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 2Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 3Resorcinol Market to Grow at 6% CAGR to 2019 Says New Research Report at ReportsnReports.com 4GenoSpace Introduces Matthew Fischer as Vice President of Sales and Marketing 2
... top line data from a Phase 2 clinical trial ... of Influenza-Like Illness (ILI) caused by all types and ... strains. In a double-blind, placebo-controlled, Phase 2 trial of ... DAS181 resulted in a significant reduction in patients, influenza ...
... (July 1, 2011) After Fukushima, it is now imperative ... from cradle to grave. If nuclear waste management is not ... will reject nuclear power as an energy choice, according to ... Atomic Scientists , published by SAGE. According to Allison ...
... just fifteen minutes to analyze a sample suspected of ... The technology amplifies any anthrax DNA present in the ... microscopic cells of the deadly bacteria Bacillus anthracis. ... lethal microbe that might be used intentionally to infect ...
Cached Biology Technology:NexBio Reports Safety and Significant Antiviral Activities of DAS181 (Fludase)* from a Dose-Ranging Phase II Clinical Trial 2NexBio Reports Safety and Significant Antiviral Activities of DAS181 (Fludase)* from a Dose-Ranging Phase II Clinical Trial 3NexBio Reports Safety and Significant Antiviral Activities of DAS181 (Fludase)* from a Dose-Ranging Phase II Clinical Trial 4Nuclear waste requires cradle-to-grave strategy 2Nuclear waste requires cradle-to-grave strategy 3Nano detector for deadly anthrax 2
... This CLS number is ... created to easily match ... showing no availability yet, ... old Sigma-Aldrich number (Z71,448-8) ...
... Adept CE 4100 high pressure dual piston ... one microlitre increaments. The ground breaking ... flexibility. The WaveQuest provides a ... and provides superior stability . Hence ...
... of large numbers of samples may be carried ... minimum operator attention. System control and data ... CE 4900. The elegant, powerful and very ... and Windows 98 and 2000., The supplied detector ...
...
Biology Products: