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:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
(Date:4/4/2017)... 4, 2017   EyeLock LLC , a leader ... United States Patent and Trademark Office (USPTO) has issued ... linking of an iris image with a face image ... the company,s 45 th issued patent. ... timely given the multi-modal biometric capabilities that have recently ...
(Date:3/29/2017)... 29, 2017  higi, the health IT company that ... North America , today announced a Series B ... of EveryMove. The new investment and acquisition accelerates higi,s ... to transform population health activities through the collection and ... higi collects and secures data today on behalf ...
Breaking Biology News(10 mins):
(Date:8/17/2017)... (PRWEB) , ... August 17, 2017 , ... ... the stock market news outlet had provided a research update on Aytu Bioscience ... administered TRT product. , According to Soulstring, prescription rates for Natesto® have more ...
(Date:8/16/2017)... ... August 16, 2017 , ... While art and science are often thought ... than one might think. A Mesh Is Also a Snare, a group exhibition ... Science Center’s Esther Klein Gallery (EKG) on August 17 and run through September 30. ...
(Date:8/15/2017)... Aug. 15, 2017 After spending the past two years ... crowdsourced data collection, GeneFo now offers this platform to healthcare stakeholders ... amplifying support, adherence, and data collection vis a vis their members, ... the successful launch of this offer. ... GeneFo ...
(Date:8/15/2017)... ... August 15, 2017 , ... Kenall, ... modular downlights designed to stay tightly sealed and perform efficiently for years. The ... wet location listings just aren't enough, such as: hospitals; behavioral health facilities; cleanrooms; ...
Breaking Biology Technology:
Cached News: