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:9/2/2014)... accidentally touch a hot oven, you rapidly pull your ... involved in sensing and responding to such painful stimuli, ... Duke researchers have made a surprising discovery about the ... worms, and have built a structural model of the ... Communications , may help direct new strategies to treat ...
(Date:9/1/2014)... ─ Dietary quality in the U.S. has improved steadily ... fat intakebut overall dietary quality remains poor and disparities ... to a new study from Harvard School of Public ... evidence to date that the extensive efforts by many ... having some payoff, but it also indicates that these ...
(Date:9/1/2014)... Within minutes after birth, every child in the U.S. ... host of conditions, including sickle cell disease. Thousands of ... lucky, meaning many suffer and die from the disease ... a halt to at least some of those deaths. ... Biology working in the lab of George Whitesides, the ...
Breaking Biology News(10 mins):Surprising new role for calcium in sensing pain 2Surprising new role for calcium in sensing pain 3Quality of US diet shows modest improvement, but overall remains poor 2Quality of US diet shows modest improvement, but overall remains poor 3Faster, cheaper tests for sickle cell 2Faster, cheaper tests for sickle cell 3
... connection between the body, mind and spirit has been ... years. The notion that psychosocial and societal considerations have ... crystallized as a result of the experiences of a ... writer and magazine editor of the popular Saturday Review, ...
... / b3c newswire / - Addressing significant product safety and ... has announced the commercial launch of two protease-free ... Albumin-DX (Lipid-Free) perform better in diagnostics applications than ... serum albumin (pHSA).  , , ...
... is a tragic disease that robs an individual of their memory ... 65 now suffer from the disease and one in two people ... Alzheimer,s does not only affect the elderly. Familial Alzheimer,s disease (FAD), ... The Study , Alzheimer,s is a complex ...
Cached Biology News:Laughter remains good medicine 2Laughter remains good medicine 3InVitria Announces Launch of Recombinant Albumin for Diagnostics 2Computational model examines the pathways of Alzheimer's that strikes at the young 2
(Date:8/29/2014)... 29, 2014  Pfenex Inc. (NYSE MKT: PFNX), ... of high-value and difficult to manufacture proteins including ... reported financial results for the second quarter ended ... completion of our initial public offering, we have ... product candidates, derived from our proprietary protein expression ...
(Date:8/29/2014)... 29, 2014 The global companion ... in 2019. It is expected to grow at ... and was valued at $1.8 billion in 2013, ... Market Research. , For more information regarding analysis ... , The research report, titled “Companion Diagnostics Market ...
(Date:8/29/2014)... Pittsburgh, PA (PRWEB) August 29, 2014 ... Chairman, Hub MacDonald, and colleague Koichiro Matsuda, Horiba Scientific, ... JASIS on September 5, 2014. JASIS , Asia’s ... September 3-5, 2014, in Makuhari Messe, Japan. , ... New Tools for Bioanalysis from Single Molecules to Single ...
(Date:8/29/2014)... 2014 Local veterinarian, Dr. Keith Clement, ... seeking candidates to participate in an investigational study of ... ultimate goal of this study is to determine if ... or two arthritically affected joints can help reduce pain ... for the current investigational study must be older than ...
Breaking Biology Technology:Pfenex Reports Second Quarter 2014 Results and Provides Business Update 2Pfenex Reports Second Quarter 2014 Results and Provides Business Update 3Pfenex Reports Second Quarter 2014 Results and Provides Business Update 4Pfenex Reports Second Quarter 2014 Results and Provides Business Update 5Pfenex Reports Second Quarter 2014 Results and Provides Business Update 6Pfenex Reports Second Quarter 2014 Results and Provides Business Update 7Pfenex Reports Second Quarter 2014 Results and Provides Business Update 8Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Fifth Annual U.S. Symposium at JASIS Organized by Pittcon’s Program Chairman Hub MacDonald 2Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... today its financial results for the year ending 31,December 2008. , , ... regulatory process for intravenous iclaprim in US, - ... of "intravenous-to-oral" Phase II trial with oral, ... - Share placing, Cash and financial investments of ...
... better restaurant menu optionsINDIANAPOLIS, Feb. 25 This year,s ... America with the reduction of nearly a half billion ... three years. Since the market introduction in 2006, Omega-9 ... replaced more than 340 million pounds of trans fat, ...
... collaborative agreement with CureDM to continue the preclinical development of CureDM,s HIP2B ... , ... Cary, NC (PRWEB) February 25, 2009 -- Calvert ... the signing of a collaborative agreement with CureDM to continue ...
Cached Biology Technology:Arpida Announces Full Year 2008 Financial Results 2Arpida Announces Full Year 2008 Financial Results 3Arpida Announces Full Year 2008 Financial Results 4Arpida Announces Full Year 2008 Financial Results 5Heart Health Month Milestone: Half a Billion Pounds of Bad Fats Eliminated From North American Diet 2Heart Health Month Milestone: Half a Billion Pounds of Bad Fats Eliminated From North American Diet 3Calvert Research and CureDM Sign Collaborative Agreement 2Calvert Research and CureDM Sign Collaborative Agreement 3
Mouse monoclonal antibody raised against a partial recombinant DENR. NCBI Entrez Gene ID = DENR...
Mouse monoclonal antibody raised against a partial recombinant CRKRS. NCBI Entrez Gene ID = CRKRS...
... BD PhosFlow Perm/Wash Buffer I can be ... signaling proteins to permeabilize cells and to ... wash buffer. Because saponin-mediated cell permeabilization is ... keep the cells in the presence of ...
Mouse monoclonal antibody raised against a full length recombinant GPT. NCBI Entrez Gene ID = GPT...
Biology Products: