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:4/15/2016)... 2016  A new partnership announced today will ... decisions in a fraction of the time it ... high-value life insurance policies to consumers without requiring ... Force Diagnostics, rapid testing (A1C, Cotinine and HIV) ... pressure, weight, pulse, BMI, and activity data) available ...
(Date:3/31/2016)...   LegacyXChange, Inc. ... LegacyXChange is excited to release its first ... be launched online site for trading 100% guaranteed authentic ... also provide potential shareholders a sense of the value ... industry that is notorious for fraud. The video is ...
(Date:3/22/2016)... March 22, 2016 ... Sensors Market for Consumer Industry by Type (Image, ... Application (Communication & IT, Entertainment, Home Appliances, ... Forecast to 2022", published by MarketsandMarkets, the ... to reach USD 26.76 Billion by 2022, ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... , June 27, 2016   Ginkgo Bioworks , ... industrial engineering, was today awarded as one of ... of the world,s most innovative companies. Ginkgo Bioworks ... for the real world in the nutrition, health ... work directly with customers including Fortune 500 companies ...
(Date:6/24/2016)... , ... June 24, 2016 , ... While the majority ... as the Cary 5000 and the 6000i models are higher end machines that use ... height of the spectrophotometer’s light beam from the bottom of the cuvette holder. ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... to announce the launch of their brand, UP4™ Probiotics, into Target stores nationwide. ... years, is proud to add Target to its list of well-respected retailers. This ...
(Date:6/23/2016)... June 23, 2016 A person commits a crime, ... scene to track the criminal down. An outbreak ... and Drug Administration (FDA) uses DNA evidence to track down ... Sound far-fetched? It,s not. The FDA has increasingly used ... investigations of foodborne illnesses. Put as simply as possible, whole ...
Breaking Biology Technology:
Cached News: