Navigation Links
Scientists unravel plants' natural defenses
Date:11/21/2007

A team of researchers, led by the University of Sheffield and Queen Mary, University of London, has discovered how plants protect their leaves from damage by sunlight when they are faced with extreme climates. The new findings, which have been published in Nature, could have implications both for adapting plants to the threat of global warming and for helping man better harness solar energy.

Photosynthesis in plants relies upon the efficient collection of sunlight. This process can work even at low levels of sunlight, when plants are in the shade or under cloud cover for example. However, when the sun is very bright or when it is cold or very dry, the level of light energy absorbed by leaves can be greatly in excess of that which can be used in photosynthesis and can destroy the plant. However, plants employ a remarkable process called photoprotection, in which a change takes place in the leaves so that the excess light energy is converted into heat, which is harmlessly dispersed.

Until now, researchers hadnt known exactly how photoprotection works. By joining forces with their physicist colleagues in France and the Netherlands, the UK team have determined how this process works. They were able to show how a small number of certain key molecules, hidden among the millions of others in the plant leaf, change their shape when the amount of light absorbed is excessive; and they have been able to track the conversion of light energy to heat that occurs in less than a billionth of a second.

Many plant species can successfully inhabit extreme environments where there is little water, strong sunlight, low fertility and extremes of temperature by having highly tuned defence mechanisms, including photoprotection. However, these mechanisms are frequently poorly developed in crop plants since they are adapted for high growth and productivity in an environment manipulated by irrigation, fertilisation, enclosure in greenhouses and artificial s
'/>"/>

Contact: Lindsey Bird
l.bird@sheffield.ac.uk
01-142-225-338
University of Sheffield
Source:Eurekalert

Page: 1 2

Related biology news :

1. UK scientists working to help cut ID theft
2. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
3. Comet probes reveal evidence of origin of life, scientists claim
4. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
5. Male elephants get photo IDs from scientists
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
8. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
9. Clemson scientists shed light on molecules in living cells
10. Scientists tackle mystery mountain illness
11. T. rex quicker than Becks, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/14/2014)... ATHENS, Ohio (Oct. 14, 2014)—It,s been millions of years ... but a team led by Ohio University scientists is ... to model airflow through dinosaur snouts. The research has ... not only breathe but to enhance the sense of ... pretty ,nosy, animals," said Ohio University doctoral student Jason ...
(Date:10/14/2014)... 14, 2014 – High doses of fish oil supplements, rich ... common type of irregular heartbeat in which the heart can ... of the AFFORD trial led by the Montreal Heart Institute ... of Cardiology on October 7th. , For the trial, ... were randomly assigned to 4 grams of fish oil a ...
(Date:10/14/2014)... between 10 and 20 years to develop, providing ... intervention if detected early, which may be possible ... clinical researchers. , Dr Jeremy Humphris and ... Medical Research, analysed medical histories and tumour samples ... patients, operated on between 1994 and 20122. Roughly ...
Breaking Biology News(10 mins):Dinosaur breathing study shows that noses enhanced smelling and cooled brain 2Dinosaur breathing study shows that noses enhanced smelling and cooled brain 3Early detection window when pancreatic cancer is in the family 2
... a long-distance race may do serious harm rather than ... much, according to a cardiologist at UT Southwestern Medical ... too much water during a race could put themselves ... a loss in the body's sodium content that can ...
... announced today the launch of the new GeneChip(R) ... with PreAnalytiX -- a joint venture between QIAGEN ... BD (Becton, Dickinson and Company). The new kits ... use with Affymetrix GeneChip technology and improve gene ...
... Earth history some 251 million years ago was preceded by ... by a delayed recovery that lasted for millions of years. ... a sharp decline in atmospheric oxygen levels was likely a ... very slow recovery. , Earth's land at the time was ...
Cached Biology News:Too much water may be as dangerous as too little during long-distance athletic events 2Affymetrix Launches New Globin-Reduction Kits and Protocol Developed with PreAnalytiX 2Affymetrix Launches New Globin-Reduction Kits and Protocol Developed with PreAnalytiX 3Scientists reveal the shape of a protein that helps retroviruses break into cells 2Scientists reveal the shape of a protein that helps retroviruses break into cells 3
(Date:10/19/2014)... 19, 2014 The report "Chocolate, Cocoa ... Trade, Prices, Geography Trend and Forecast (2011 - 2016)," ... and geography and studies the major market drivers, restraints, ... Europe, and Asia. , The global chocolate market is ... billion in 2016 at an estimated CAGR of 2.7% ...
(Date:10/19/2014)... According to market research report “Outdoor Wi-Fi Market ... Global Advancements, Forecasts and Analysis (2013 - 2018)", ... with analysis and forecasting of the global revenues. ... and the restrains for this market with the ... Browse 65 market data tables and 69 figures ...
(Date:10/18/2014)... (PRWEB) October 18, 2014 The ... - Trends and Forecasts to 2019", analyzes the ... in order to understand the industry details such ... opportunities across various geographic regions. , Browse 81 ... 202 Slides and in-depth TOC on “1,6-Hexanediol Market ...
(Date:10/18/2014)... The Asia-Pacific Liquid Crystal on Silicon (LCoS) display ... Asia-Pacific with analysis and forecast of revenue. This market ... expected to reach $380.0 million by 2018, at a ... through the TOC of the Asia-Pacific LCoS display market ... provided. This also provides a glimpse of the segmentation ...
Breaking Biology Technology:Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Liquid Crystal on Silicon (LCoS) display market is expected to reach $380.0 million by 2018 - New Report by MicroMarket Monitor 3
... ... HPCwire,s Readers, Choice Award for Best Application of Green Computing. The award was ... ongoing in Portland, Ore. , ... Portland, OR (Vocus) Nov. 17, 2009 --- The U.S. Department of Energy,s ...
... Pharma guarantees to purchase 50,000 KINLYTIC vials over next ... Biosystems Inc. (MBX:TSX), a biotech company focused on virology ... agreement with Riso Pharma that guarantees purchases of not ... years. KINLYTIC (Urokinase) is Microbix, thrombolytic agent for treating ...
... , ROCKVILLE, Md., Nov. 17 Neuralstem, Inc. (NYSE Amex: ... the third quarter ended September 30, 2009. , (Logo: ... of 2009, the Company reported a net loss of $5,096,983, or ... $0.10 per share, for the comparable 2008 period. The increase was ...
Cached Biology Technology:Argonne Recognized for "Green Computing" in 2009 HPCwire Readers' and Editors' Choice Awards 2Argonne Recognized for "Green Computing" in 2009 HPCwire Readers' and Editors' Choice Awards 3Argonne Recognized for "Green Computing" in 2009 HPCwire Readers' and Editors' Choice Awards 4Microbix Signs Marketing Agreement For Kinlytic(R)(Urokinase) In Growing Middle East Region 2Microbix Signs Marketing Agreement For Kinlytic(R)(Urokinase) In Growing Middle East Region 3Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 2Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 3Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 4Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 5Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 6Neuralstem, Inc. Reports Third Quarter Financial Results and Provides Business Update 7
... Detection of the yolk protein Vtg in plasma ... and sensitive biomarker for endocrine disrupting chemicals (EDCs) ... has become an accepted screening test for the ... (rainbow trout) EIA kit is a double-antibody immunometric ...
... Vtg in plasma from juvenile or male fish ... disrupting chemicals (EDCs) with estrogenic effects in fish. ... test for the estrogenic effects of EDCs in ... a double-antibody immunometric (sandwich) EIA for analyzing Vtg ...
... Research Scale (gram quantities of IgY) , After ... your Antigen), we segregate the appropriate number of ... 3 such eggs are collected (usually over a ... series. This involves a total of four injections ...
... Agilents G1979A multisignal output accessory lessens ... data systems in laboratories with multiple ... digital MS signals from Agilent 1100 ... analog format and transmits the analog ...
Biology Products: