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:3/3/2015)... 3, 2015 Cryoport, Inc. (OTCBB: ... cryogenic logistics solutions for the life sciences ... cell lines, clinical research organizations, vaccine manufacturers, ... the expansion of its relationship with ... Hutch") Clinical Research Division with the inclusion ...
(Date:3/2/2015)... 2015  Businesses have a new option for ... Rankins Enterprises has announced the launch of a ... for businesses to protect their customers, personal data, ... Beconux is a biometric transaction processing system ... to an ATM machine, the new system fuses ...
(Date:2/25/2015)... Feb. 25, 2015  ABC Financial Services (ABC), ... the Health and Fitness Industry, today announced enhancements ... MYiCLUBonline.  The latest upgrade includes advances to the ... cardless check-in via Identity One fingerprint biometrics. The ... through interactive displays at the International Health, Racquet ...
Breaking Biology News(10 mins):Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 2Cryoport, Inc. Expands Support of Fred Hutchinson Cancer Research Center's Clinical Research Division 3Personal Data Protection Company Launches New Product 2ABC Financial Unveils New Software Enhancements 2ABC Financial Unveils New Software Enhancements 3
... spent at sea, a magnetic map is apparently responsible for ... of data collected over 56 years and reported online on ... publication. "To find their way back home across thousands ... that exists where they first enter the sea as juveniles," ...
... When migrating, sockeye salmon typically swim up to 4,000 miles into ... reaches of the rivers in which they were born to spawn ... wondered how salmon find their way to their home rivers over ... A new study, published in this week,s issue of ...
... $25 billion in health information technology (IT) as a ... little is known about how IT applications improve patient ... Missouri nursing informatics expert suggests that sophisticated IT leads ... staff, which allows staff to more efficiently coordinate care ...
Cached Biology News:Magnetic map guides salmon home 2Animal magnetism: First evidence that magnetism helps salmon find home 2Animal magnetism: First evidence that magnetism helps salmon find home 3Information Technology improves patient care and increases privacy, MU informatics expert says 2
(Date:3/26/2015)... The Market Element LLC, a leading inbound ... Designing Gig LLC to provide website design, development, and ... this alliance with Designing Gig represents a pivotal moment ... comprehensive, end-to-end, digital solution for our clients, which now ... Miller, president of The Market Element. “For small and ...
(Date:3/26/2015)... Houston, Texas (PRWEB) March 26, 2015 ... assist technologies, and Transonic, a supplier of precision transit-time ... board that will greatly improve the efficiency of the ... will enable LVAD patients to experience greater mobility and ... embedded with the miniature flow board, will draw 1/6th ...
(Date:3/25/2015)... Agnition announced today that it will ... airing for the first time at 7:30 a.m. CST ... will explore the extremely important role soil microbes perform ... patented Microbial Catalyst™ technology that enhances soil and plant ... will air again on April 28. , A biochemist ...
(Date:3/25/2015)... (PRWEB) March 25, 2015 Laboratory ... Top-Loading Balances and Analytical Balances to get best-performing ... line of weighing balances from the trusted brand ... Balances increase your efficiency by providing a ... of samples. Weighing modes include parts counting, percent ...
Breaking Biology Technology:The Market Element LLC and Designing Gig LLC Form Strategic Alliance 2LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 2LVAD patients to have greater mobility and peace of mind through Transonic and ReliantHeart’s True Flow collaboration for the HeartAssist5® 3Agnition to be Featured In Upcoming Episode of American Farmer on RFD-TV 2New Economical Top-Loading and Analytical Symmetry Balances from Cole-Parmer 2
... - The University of Wisconsin-Madison professor who ... reportedly agreed to operate a research lab as an adjunct ... ,The Santa Barbara Independent is reporting ... will be in Santa Barbara about one month out of ...
... again, and myriads of opinions are being voiced. If we look ... by an almost equal number of misconceptions and confusion about the ... recent article run on WTN by James Carlini highlights ... examine one small part of the immigration debate and its determinable ...
... University of Wisconsin-Madison faculty members Sean Carroll ... to the National Academy of Sciences . , ... most prestigious honors bestowed upon American scientists. Carroll, a ... professor of chemistry and biochemistry, were recognized for distinguished ...
Cached Biology Technology:Jamie Thomson to run California research lab 2Misconceptions dominate the immigration debate 2Misconceptions dominate the immigration debate 3Misconceptions dominate the immigration debate 4Misconceptions dominate the immigration debate 5
... The IHC Select Immunoperoxidase Secondary Detection ... rat or goat IgG in the Primary ... antigens present in the specimen. Any excess ... Secondary Antibody Reagent (conjugated to biotin) is ...
... long double stranded RNA (dsRNA) has been ... diverse group of organisms as well as ... to the inhibition of protein expression by ... messenger RNA (mRNA). Attempts to induce RNA ...
... The TSQ Quantum Ultra defines a ... and environmental analysis. It features the ... probes, a titanium skimmer with superior skimming ... sensitivity. Its redesigned ion transfer tube ...
... a tetramethylrhodamine-conjugated jetSI-ENDO (excitation at ... nm), the powerful siRNA transfection ... to determine the transfection efficiency ... and trafficking of siRNAs. More ...
Biology Products: