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:10/15/2014)... , Oct. 15, 2014   Neurotechnology ... today announced the availability of the VeriLook ... Surveillance 3.0 provides real-time biometric face identification using ... digital surveillance cameras. The new version not only ... differentiates people from objects while they are moving ...
(Date:10/14/2014)... is how to produce enough food to feed the ... Agriculture Organization of the United Nations predicts that food ... to feed a growing global population, and plants are ... production. Plants—grains, cereals, fruits, vegetables, and more—feed humans ... must tap into our knowledge of how plants work ...
(Date:10/14/2014)... of researchers, led by the Chinese Academy of Agricultural ... Genetics a brief genomic history of tomato breeding, ... plant. , The C.M. Rick Tomato Genetics Resource Center ... study by providing seed of both cultivated tomato varieties ... on the first tomato genome sequence completed just two ...
Breaking Biology News(10 mins):VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3
... DURHAM, N.C. - Immune system cells of the brain, ... in memory and learning, according to new research by Duke ... in psychology & neuroscience, had shown that laboratory rats experiencing ... response to subsequent infections, which also harms their learning and ...
... Altamira caves are stirring controversy over the possibility that ... paintings that changed views about the intellectual ability of ... the current edition of Chemical & Engineering News ... of Stone Age paintings so magnificent that experts have ...
... Bees, bats, and moths all follow their noses in ... such animals for pollination often produce particular chemical scents ... produce certain chemicals is also determined by a plant,s ... ability to respond to pollinator pressures. So which ...
Cached Biology News:Source found for immune system effects on learning, memory 2Source found for immune system effects on learning, memory 3For certain orchids, relatives more important than pollinators in shaping floral attractants 2For certain orchids, relatives more important than pollinators in shaping floral attractants 3For certain orchids, relatives more important than pollinators in shaping floral attractants 4
(Date:10/19/2014)... 19, 2014 The Asia-Pacific Bromine ... in Asia-Pacific with analysis and forecast of revenue. ... Pacific Bromine Market report, to get an idea ... a glimpse of the segmentation in the Asia-Pacific ... and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html , ...
(Date:10/19/2014)... October 19, 2014 The report ... & Homeland Security), Technology, Payload, Type & by ... segments the global unmanned ground vehicle market into ... forecasting of market sizes. The report also identifies ... opportunities impacting it along with the adoption trends. ...
(Date:10/18/2014)... The Asian arthroscopic devices report defines and ... forecast of revenue. The arthroscopic devices market in Asia ... at a CAGR of 6.5% from 2013 to 2018. ... devices market, to get an idea of the in-depth ... segmentation of arthroscopic devices market in the same region, ...
(Date:10/18/2014)... (PRWEB) October 18, 2014 According to ... Resource & Well Type - Global Trends & Forecasts ... estimated $31 billion in 2011. This value is expected ... billion by 2017, with 10% CAGR during the same ... hydraulic fracturing production market in terms of hydraulic horse ...
Breaking Biology Technology:The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 2Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 5The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 2The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 3The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 4Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4
... 11 Debiopharm Group,(Debiopharm), a global independent ... conditions, today announced that it,received current Good ... chemical, physical and biochemical quality control work,conducted ... the same time,certification of the Lausanne site ...
... the Sustainable Biodiesel Alliance On September 10th, 2007 ... Tour to New York City. Legendary artist Willie Nelson,and ... Square. Dedicated to,its "save the planet" motto, Hard Rock,s ... of the Sustainable Biodiesel Alliance. Award-winning,actors Woody Harrelson and ...
... 10 SGX Pharmaceuticals, Inc.,(Nasdaq: SGXP ) ... collaboration,agreement with Novartis focused on the development and ... first line and drug resistant,Chronic Myelogenous Leukemia (CML). ... progressing a number of,potential drug candidates, with the ...
Cached Biology Technology:Debiopharm Receives cGMP Certification for Quality Control of its Drug Products 2MultiVu Video Feed: Hard Rock's 2007 Ambassadors of Rock Tour Is "On the Road Again" With Music Legend Willie Nelson 2SGX Provides Update on BCR-ABL Collaboration 2SGX Provides Update on BCR-ABL Collaboration 3
Anti-Goat HRP-DAB Cell & Tissue Staining Kit...
... The Light Diagnostics Cytomegalovirus (CMV) pp65 Antigenemia ... qualitative identification of lower matrix protein pp65 ... Kit Components: ... One bottle containing 220 mL of buffered ...
... The CultureWell cell culture ... for preparing cultured cells for ... uses medical-grade silicone gaskets preassembled ... cell culture plates. The entire ...
nuclear cap binding protein subunit 1, 80kDa, mRNA...
Biology Products: