Navigation Links
Defenseless plants arm themselves with metals

A group of plants that uses metal to defend against infection may do so because the normal defense mechanism used by most other plants is blocked.

Purdue University researchers found that this group of plants produces, but does not respond to, the molecule that triggers the infection response used by nearly all other plants. The molecule does, however, allow this group of plants, called metal hyperaccumulators, to store high levels of metal in their tissues, rendering them pathogen resistant.

These findings, reported in today's (Friday, March 11) issue of the journal Plant Physiology, shed new light on the evolution of these plants and may have implications for the development of crops that may one day remove metal and other contaminants from the environment.

"Our goal is to find the high-level regulator - the one gene or group of genes that turns a plant into a hyperaccumulator," said David Salt, associate professor of plant molecular physiology in Purdue's horticulture department. "But we have no way to know what that gene is, so we need to deconstruct the process, starting with things we can measure, which are these visible traits, and then we work backwards."

A question that has long stymied Salt and his colleagues centers on the origins of this trait. While essential as micronutrients, metals are toxic in high levels. Most plants have mechanisms that keep metals in the environment out of their tissues. So what would have driven some plants to do just the opposite?

"The existing explanation is that metal accumulation evolved to protect these plants from pathogens," Salt said. "Yet most other plants don't accumulate metals, and they resist infection just fine. It never really made sense to me. If everyone's already resisting pathogens, why do you need an extra mechanism? There has to be more to it."

It turns out the plants Salt studies - a group of small, weedy alpine flowers called Thlaspi - lack the standard pathog
'"/>

Source:Purdue 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. At long last, scientists figure out how plants grow
7. Precise Timing Enabled Pig-to-rat Transplants To Cure Diabetes
8. Engineers improve plastics potential for use in implants by linking it to biological material
9. Innovative coating could give medical implants a longer life
10. Mechanism for the captation of nutrients in plants- unknown to date
11. Its electric: Cows show promise as powerplants
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Defenseless plants arm themselves with metals

(Date:8/29/2014)... known about what genetic changes transform wild animals into ... whom is a University of Montana assistant professor, has ... development of the brain and the nervous system were ... Aug. 28 in Science and gives answers ... http://www.sciencemag.org/ ., The domestication of animals and plants, a ...
(Date:8/29/2014)... is available in German . ... between organisms is considered the oldest form of communication. ... conspecifics, for example, the sexual attraction between males and ... and to coordinate reproductive behavior in males and females. ... of the Algarve in Faro, Portugal, and at the ...
(Date:8/28/2014)... now available from the Lady Bird Johnson Wildflower Center ... harmful non-native plant, insect and other invasive species statewide. ... about $137 billion in economic and other damage annually ... plants and more. , "By having streamlined tools like ... occur, we,re more likely to catch these threats early ...
Breaking Biology News(10 mins):New research reveals how wild rabbits were genetically transformed into tame rabbits 2New research reveals how wild rabbits were genetically transformed into tame rabbits 3Ready for mating at the right time 2Ready for mating at the right time 3Mobile app makes ID of harmful plants, insects in Texas a snap 2
... San Diego NanoEngineers won a grant from the National ... manufacture biodegradable frames around which heart tissues functional ... growing tissues that mimic nature,s fine-grained details, including vasculature, ... cardiac tissues for people who have suffered a heart ...
... plants, including crops, release volatiles in response to insect ... can be an aromatic call for help to attract ... Michigan State University, and Georg-August-University Gttingen have discovered how ... reported this week in the online early edition of ...
... major obstacle in curing ovarian cancer but new research from ... cancer cells in a new way that can break the ... researchers found the drug (FTY720) had a potent effect in ... the most commonly used chemotherapeutic drug currently available for the ...
Cached Biology News:Nanoengineers aim to grow tissues with functional blood vessels 2Nanoengineers aim to grow tissues with functional blood vessels 3Biochemistry of how plants resist insect attack determined 2New treatment to overpower drug resistance in ovarian cancer 2
(Date:9/1/2014)... 2014 The Collaborative R&D Terms ... provides comprehensive understanding and unprecedented access to the ... the worlds leading life science companies. , The ... how and why companies enter collaborative R&D deals. ... negotiated deals terms provides critical insight into the ...
(Date:8/30/2014)... (PRWEB) August 31, 2014 The ... a professional and in-depth study on the current ... Global and China. , The report provides a ... and industry chain structure. Global market analysis and ... focus on history, developments, trends and competitive landscape ...
(Date:8/29/2014)... August 29, 2014 Pittcon is pleased ... and colleague Koichiro Matsuda, Horiba Scientific, have organized a ... 5, 2014. JASIS , Asia’s largest analytical and ... in Makuhari Messe, Japan. , The four speakers ... Bioanalysis from Single Molecules to Single Cells” will present ...
(Date:8/29/2014)... August 29, 2014 A major challenge ... biotech start-up dense realm of Boston-Cambridge, is gaining visibility ... investors. James Sherley, the Director of Boston’s Adult Stem ... local and national visibility of his company an important ... , In addition to a social media marketing ...
Breaking Biology Technology:Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4Electrical Insulating Varnish Market World, China Regional Analysis & 2020 Forecasts Available at DeepResearchReports.com 2Electrical Insulating Varnish Market World, China Regional Analysis & 2020 Forecasts Available at DeepResearchReports.com 3Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 2The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 3The Adult Stem Cell Technology Center, LLC Participates in Multiple Stem Cell and Regenerative Medicine Conferences Before Year End 4
... hurricane that smashed into New York in 1938 to the ... and 20th centuries are rich with examples of extreme weather. ... reanalysis of all global weather events from 1871 to the ... stream level. The 20th Century Reanalysis Project, outlined ...
... Incorporated (Nasdaq: SPEX ), an innovator ... atherosclerosis; and providers of technical and regulatory consulting services ... the closing of previously reported agreements to sell $2.77 ... to purchase shares of its common stock in a ...
... Sensus Healthcare is pleased to announce its ... products to be exclusively offered by our physician partners. ... cancer are on the rise and are dramatically escalating ... aim at skin cancer (SM) in innovative ways. On ...
Cached Biology Technology:The 20th Century Reanalysis Project: A time machine for climate scientists 2The 20th Century Reanalysis Project: A time machine for climate scientists 3Spherix Announces Closing of Registered Direct Offering of $2.77 Million in Common Stock and Warrants 2Spherix Announces Closing of Registered Direct Offering of $2.77 Million in Common Stock and Warrants 3Sensus Healthcare Announces New Professional Skin Care Line - Sensus Skin Solutions™ 2
... step procedure (PCR, Exonuclease III digestion and ... day. The typical cloning efficiency using this ... and Benefits: , , Universal - PCR ... vector , High Cloning Efficiency - Typically>80% ...
... for use with 96- or 384-well PCR plates ... of location on 96-tube plates End tabs on ... the plate* Efficient sealing is achieved with either ... screw or clip-down hot lid thermal cyclers Fully ...
... HistoMark Biotin Streptavidin-HRP Systems provide ... and intracellular antigens in frozen or ... These systems also facilitate double ... can be performed simultaneously with primary ...
SYBR Green Nucleic Acid Dye...
Biology Products: