HOME >> BIOLOGY >> NEWS
Poplar trees redirect resources in response to simulated attack

the plant spring back to life once the attack has passed. Using the techniques developed at Brookhaven, we now have a way to find out."

To simulate an insect attack, the scientists painted a solution of jasmonic acid, a chemical messenger that plants produce in response to various types of stress, onto the leaves of poplar trees in a closed chamber. They then administered carbon dioxide gas "labeled" with radioactive carbon-11 to individual leaves, where it is quickly converted to sugar, and traced the movement of this radiolabeled sugar through the plants using autoradiography and other techniques. Autoradiography allows for taking a snapshot in time showing the precise location of the radiotracer within the plant. With this and other techniques, the scientists can compare what that plant does with the carbon dioxide both before and after an attack.

"Carbon dioxide is a plant's major resource. To see how it is allocated into various biochemical pathways is an incredibly powerful tool for learning how plants cope with stress," says plant scientist Michael Thorpe who is helping to build the plant-imaging program at Brookhaven.

Plants subjected to the jasmonic acid "attack" produced more radiolabeled sugar and delivered more of it to the roots than plants untreated with the hormone. "This is pretty convincing evidence that plants can respond 'passively' by redirecting their nutrients away from the site of attack and placing them into storage for later regrowth," Ferrieri said.

Supporting evidence comes from the amount of carbon-11 the scientists detected in isoprene, a hydrocarbon gas that is a byproduct of sugar synthesis in the leaves. That research, reported in Plant, Cell & Environment, shows that, in response to jasmonic acid "attack," the plants diverted more newly acquired carbon into isoprene production. "Scientists are only just beginning to realize that isoprene has a vital role as an antioxidant in helping plants tolerate ma
'"/>

Contact: Karen McNulty Walsh
kmcnulty@bnl.gov
631-344-8350
DOE/Brookhaven National Laboratory
28-Mar-2005


Page: 1 2 3

Related biology news :

1. Poplar DNA code cracked -- new possibilities for sustainable energy
2. The first tree genome is published: Poplar holds promise as renewable bioenergy resource
3. Plastic that grows on trees
4. Human ancestors learned to walk upright in the trees, say experts
5. Lessons from the orangutans: Upright walking may have begun in the trees
6. Seeing the trees for the forest: WHRC scientists creating national biomass and carbon dataset
7. Mystery of fossilized trees is solved
8. How trees manage water in arid environments
9. Squirrels winning at outwitting trees survival strategy
10. Software, evolution and micro-inversions -- improving the building of phylogenetic trees
11. Frankincense trees overexploited for Christmas scent

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


(Date:6/2/2016)... The Department of Transport Management (DOTM) ... million US Dollar project, for the , Supply ... Enrolment, and IT Infrastructure , to ... implementation of Identity Management Solutions. Numerous renowned international vendors participated ... was selected for the most compliant and innovative ...
(Date:6/1/2016)... Favorable Government Initiatives Coupled With ... Identification to Boost Global Biometrics System Market Through 2021  ... report, " Global Biometrics Market By Type, By ... 2011 - 2021", the global biometrics market is projected ... of growing security concerns across various end use sectors ...
(Date:5/16/2016)... May 16, 2016   EyeLock LLC , a ... the opening of an IoT Center of Excellence in ... expand the development of embedded iris biometric applications. ... of convenience and security with unmatched biometric accuracy, making ... aside from DNA. EyeLock,s platform uses video technology to ...
Breaking Biology News(10 mins):
(Date:6/27/2016)...   Ginkgo Bioworks , a leading organism ... today awarded as one of the World Economic ... most innovative companies. Ginkgo Bioworks is engineering biology ... world in the nutrition, health and consumer goods ... customers including Fortune 500 companies to design microbes ...
(Date:6/24/2016)... ... June 24, 2016 , ... Researchers at the Universita Politecnica delle Marche ... with peritoneal or pleural mesothelioma. Their findings are the subject of a new article ... Diagnostic biomarkers are signposts in the blood, lung fluid or tissue of mesothelioma patients ...
(Date:6/23/2016)... - FACIT has announced the creation of a ... Propellon Therapeutics Inc. ("Propellon" or "the Company"), to ... of first-in-class WDR5 inhibitors for the treatment of ... an exciting class of therapies, possessing the potential ... patients. Substantial advances have been achieved with the ...
(Date:6/23/2016)...  The Prostate Cancer Foundation (PCF) is pleased to announce 24 ... for prostate cancer. Members of the Class of 2016 were selected from a ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology:
Cached News: