Navigation Links
How plants avoid feeling the burn

Too much sun ?for plants as well as people ?can be harmful to long-term health. But to avoid the botanical equivalent of "lobster tans," plants have developed an intricate internal defense mechanism, called photoprotection, which acts like sunscreen to ward off the sun's harmful rays.

"We knew that biomolecules called carotenoids participate in this process of photoprotection, but the question has been, how does this work?" said Iris Visoly-Fisher, a postdoctoral research associate in the Biodesign Institute at Arizona State University.

Carotenoids act as 'wires' to carry away the extra sunlight energy in the form of unwanted electrons, somehow wicking away the extra electrons across long distances from locations that could damage plant tissues and photosynthesis. During photoprotection, the consensus school of thought was that carotenoids--the source of the orange pigments in carrots and Vitamin A -- become oxidized, or charged, losing an electron in the process.

Now, Fisher and other ASU scientists have found a way to measure for the first time the electrical conductance within such an important biomolecule. And in doing so, the team has produced a new discovery which shatters the prevailing view. The research team found that oxidation is not required for photoprotection, but rather, carotenoids in a neutral, or uncharged state, can readily handle the electron overload from the sun.

Their findings have been published in the prestigious journal Proceedings of the National Academy of Sciences (PNAS) under the title"Conductance of a Biomolecular Wire" (http://www.pnas.org/cgi/content/abstract/0600593103v1).

"This is a remarkable experimental tour-de-force and the result is quite unexpected," said Lindsay, who directs Fisher's work in the Biodesign Institute's Center for Single Molecule Biophysics. "Carotene was regarded as the poster child for this molecula
'"/>

Source:Arizona State University


Page: 1 2 3 4

Related biology news :

1. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
2. Antibodies from plants protect against anthrax
3. New RNA polymerase discovered in plants
4. Transgenic plants remove more selenium from polluted soil than wild plants, new tests show
5. Scientists discover how plants disarm the toxic effects of excessive sunlight
6. Defenseless plants arm themselves with metals
7. At long last, scientists figure out how plants grow
8. Precise Timing Enabled Pig-to-rat Transplants To Cure Diabetes
9. Engineers improve plastics potential for use in implants by linking it to biological material
10. Innovative coating could give medical implants a longer life
11. Mechanism for the captation of nutrients in plants- unknown to date
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: How plants avoid feeling the burn

(Date:7/22/2014)... squirrels have adapted to New York City,s human behaviour, ... better, than their fellow squirrels in the woods. , ... Environment & Agriculture, led the study that proved eastern ... urban environments and prevent unnecessary responses when humans acted ... footpath. , "As we rapidly increase the spread ...
(Date:7/22/2014)... spot with natural tourism resources, a recent study revealed a ... Geoscience and Mineral Resources (KIGAM) indicated that there are the ... 5,000 years ago. That is the first time to actually ... volcano 5,000 years ago in the inland part of the ... The research team led by Dr. Jin-Young Lee confirmed in ...
(Date:7/22/2014)... 2014 NXT-ID, Inc., (NXTD: OTCQB) a biometric authentication ... its next generation smart wallet, Wocket™, will be featured on ... that airs on the History Channel, FYI Network, ... features top technology products and services. The segment ... Channel (6:00-6:30am ET/PT) and the FYI Network (7:00-7:30am ...
Breaking Biology News(10 mins):New York squirrels are nuts about city life 2Jeju Island is a live volcano 2NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 2NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 3
... and zanamivir, are highly effective when given as ... the influenza virus, according to an analysis of ... Research Center, University of Michigan and University of ... the American Journal of Epidemiology. The analysis also ...
... for granted when it is carried out by the ... when scientists devise new ways for molecules to self ... , Researchers with the Macromolecules and Interfaces Institute (MII ... development in the online issue for the Journal of ...
... Center have identified a subgroup of hard-to-treat breast cancers ... used in the treatment of breast tumors. They ... which may help identify patients most likely to benefit ... in a clinical trial anticipated to begin at the ...
Cached Biology News:Antivirals effectively curb influenza virus 2Antivirals effectively curb influenza virus 3Molecular signature may identify cisplatin-sensitive breast tumors 2Molecular signature may identify cisplatin-sensitive breast tumors 3
(Date:7/22/2014)... The DNA Spectrum Ancestry ... representation of history, migration, and culture. , Throughout ... family history stories stemming from Europe. His father passionately ... Pictures and 8mm home movies painted an elaborate picture ... and Steve ordered a test from DNA Spectrum to ...
(Date:7/22/2014)... SHENZHEN , Kina, 22. juli 2014 /PRNewswire/ ... et datterselskab af BGI, verdens største genomics-organisation, annoncerede ... exome-sekvenseringstjeneste baseret på Complete Genomics brancheførende platform. ... for at levere patenterede sekvenseringsteknologier med 99,999 % ... blev købt af BGI i 2013. Mere end ...
(Date:7/22/2014)... Hussey Copper , a leader in copper manufacturing ... Pullman Regional Hospital,s conversion of more than 1,100 touch ... at a nominal cost.  This reasonably priced surface kills ... within 2 hours of exposure 1 and will aid ... in its facilities. Pullman Regional Hospital, in ...
(Date:7/22/2014)... Quorum Review IRB, the industry leader in ... trials called Quick Step™ . The offering went live ... research industry’s need for seamless study start-up with a large ... studies planning 50 or more North American investigator sites, as ... site count of 80 or more. Qualifying studies may also ...
Breaking Biology Technology:DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 2DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 3DNA Test from DNA Spectrum Shows Heritage Like a Map of the Past 4BGI Tech lancerer Human Whole Exome-sekvenseringstjeneste på Complete Genomics avancerede platform 2Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 2Pullman Regional Hospital changes more than 1,100 touch points to Hussey Copper's MD-Cu29 antimicrobial copper to help protect against bacteria 3Quorum Review IRB Launches New Quick Step™ Service for Large Clinical Trials 2Quorum Review IRB Launches New Quick Step™ Service for Large Clinical Trials 3
... FMC Corporation (NYSE: FMC ) announced ... exclusive agreements covering global development and supply of Chr. ... will begin commercialization this year of Chr. Hansen,s Nemix ... biological standalone and combination products in the Americas and ...
... NEW YORK, Aug. 23, 2011 ... research report is available in its ... (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue ... Forecast (2010-2015) ...
... Blocking a transport pathway through the brain cells offers new ... colleagues of VIB and K.U. Leuven discovered that two main ... beta precursor protein (APP) and the beta secretase enzyme (BACE1), ... up. It is during the eventual meeting between protein and ...
Cached Biology Technology:FMC Corporation Announces Exclusive Global Development and Supply Agreements for Chr. Hansen Biological Products 2Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 2Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 3Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 4Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 5Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 6Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 7Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 8Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 9Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 10Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 11Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 12Biochips Market (DNA Microarrays, Lab-on-Chip, Protein Microarrays, Tissue & Cell Arrays) Trends & Global Forecast (2010-2015) 13
... peptide transporter 2 (APT2) ... transporter PSF2) (Peptide supply ... transporter involved in antigen ... Antigen: ...
Raised to arginine vasopressin coupled to bovine thyroglobulin with carbodiimide ....
Chicken polyclonal to HAGH ( Abpromise for all tested applications). Antigen: Synthetic peptide, corresponding to N terminal amino acids 110-260 of Human HAGH. Entrez GeneID: 3029 Swiss ...
Rab 3 Immunogen: Synthetic peptide corresponding to the N-terminal region of Rab 3 protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
Biology Products: