Navigation Links
Defenseless plants arm themselves with metals

en defense mechanism found in nearly every other plant species. Thlaspi plants live in soils naturally enriched in nickel, and when growing in their natural habitat, are not any more susceptible to pathogens than similar plants growing nearby.

When grown in the absence of metal, however, these plants are defenseless against diseases like powdery mildew, a common fungal infection that most other plants fight off with ease.

In most plants, exposure to powdery mildew and other pathogens triggers the plant defense pathway, a series of biochemical events that occur in succession and help the plant resist infection. A molecule called salicylic acid - a common plant compound and the active ingredient in pharmaceuticals like aspirin and acne medications - governs this pathway.

When faced with a fungus or bacteria, most plants turn up their production of salicylic acid, which then interacts with other molecules in the plant, eventually turning on the genes that produce the proteins involved in fighting infection. These infection-fighting proteins also turn off salicylic acid production, a phenomenon known as negative feedback. In this way, plants can turn the pathogen defense pathway on and off as needed.

Most plants maintain very low levels of salicylic acid in their tissues unless they are fighting an infection. Metal hyperaccumulators, however, have significantly elevated salicylic acid in their tissues all the time.

In the current study, Salt and his colleagues compared salicylic acid levels in both the hyperaccumulator Thlaspi and the common lab plant Arabadopsis, which does not accumulate metal. They also compared fungal infection rates in both types of plants when grown with or without exposure to the metal nickel.

They found significantly higher levels of salicylic acid in the hyperaccumulator compared to the non-accumulator. In addition, while Thlaspi thrived in metal-enriched soil, it succumbed to a severe fungal infe
'"/>

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:7/11/2014)... Janeiro, Brazil- In the brains of all vertebrates, ... allows an electric or chemical signal to be ... synapses, which are the most abundant type of ... formation is crucial for learning, memory, perception and ... synapses critical for brain function. For instance, ...
(Date:7/10/2014)... -- Aware, Inc. (NASDAQ: AWRE ), a leading ... June 26, 2014 that its Board of Directors had ... or approximately $40 million in total.  The Board established ... payment date of July 24, 2014.  The Company was ... ex-dividend date for this special cash dividend.  An ex-dividend ...
(Date:7/10/2014)... -- NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company focused on the ... was interviewed on July 1 st on the ... . Mr. Pereira discusses the company,s next generation smart wallet ... the Wocket™ aims to replace a traditional wallet with a ... tells Gino he has never heard of the Wocket ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 2Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 3Security and Your Money: Tampa Bay Radio Host Cedric Harris Talks to NXT-ID CEO Mr. Gino Pereira about the Wocket Smart Wallet 4
... carried a gene that increases your risk for Alzheimer,s disease? And ... damage not when you,re old but when you,re young? ... strong genetic component to the development of late-onset Alzheimer,s. In 1993, ... a quarter of us that triples the risk for getting ...
... ARLINGTON, VA (May 3, 2011) Cancer studies from ... unveiled at the American Association of Pharmaceutical Scientists, (AAPS) ... May 16 -Wednesday, May 18 at the Hilton San ... Oral Vaccine for Cervical Cancer Cervical cancer ...
... overcome their evolutionary legacies to become much better at ... of energy that can power vehicles in the near ... solar scientists has found. A U.S. Department of ... 18 scientists to compare the efficiency of plants and ...
Cached Biology News:Alzheimer's risk gene disrupts brain's wiring 50 years before disease hits 2Alzheimer's risk gene disrupts brain's wiring 50 years before disease hits 3AAPS national biotechnology conference to highlight breakthrough cancer treatments 2NREL's multi-junction solar cells teach scientists how to turn plants into powerhouses 2NREL's multi-junction solar cells teach scientists how to turn plants into powerhouses 3
(Date:7/11/2014)... ON , July 11, 2014 /CNW/ - Sunovion ... approved APTIOM TM (eslicarbazepine acetate) for use as ... seizures in patients with epilepsy who are not satisfactorily ... indicated for use in patients under 18 years of ... most common neurological disorders and according to Epilepsy Canada, ...
(Date:7/10/2014)... 10, 2014 Deep Knowledge Ventures ... Forum on ‘Commercialising Longevity Research’ and welcomed a ... the London Bioscience Innovation Center for the event, ... Aging Analytics Ltd. The meeting highlighted the need ... research for age-related disease, as well as the ...
(Date:7/10/2014)... 2014 OMICS Group’s 5th International conference ... August, 2014 at Double Tree by Hilton Beijing, China ... in Analytical & Bioanalytical research methods only to facilitate ... this occasion, Dr. Srinubabu Gedela, MD of OMICS Group ... a remarkable one in bringing a unique and international ...
(Date:7/10/2014)... Capital, a firm specializing in acquiring and managing food ... the Slim-Fast brand from Unilever. Unilever will retain a ... were not disclosed. Slim-Fast is a branded ... shakes, powders, bars and snacks to retail customers throughout ... United Kingdom and Ireland.  The ...
Breaking Biology Technology:Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 2Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 3Sunovion Pharmaceuticals Canada Inc. Announces Health Canada Approval of APTIOM(TM) (eslicarbazepine acetate) as a Once-Daily Adjunctive Treatment for Partial-Onset Seizures in Patients with Epilepsy 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Kainos Capital Acquires Slim-Fast From Unilever 2
... June 21, 2011 Ikaria, Inc., a critical care ... to address the significant needs of critically ill patients ... its Chairman and CEO, Daniel Tasse, will present at ... International Convention on Tuesday, June 28, 2011 from 2:30 ...
... 2011 Merisel, Inc. (OTC: MSEL) operating under ... , a leading provider of visual communications and brand imaging ... last night at the 9th Annual American Business Awards Ceremony, ... its commitment to delivering solid results, despite prevailing economic turbulence. ...
... Halozyme Therapeutics, Inc. (Nasdaq: HALO ... targeting the extracellular matrix , today announced ... programs at the American Diabetes Association (ADA) ... 2011 at the San Diego Convention Center. ...
Cached Biology Technology:Ikaria® To Present at 2011 BIO Business Forum and International Convention 2Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 2Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 3Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 4Merisel, Inc. Wins Business Turnaround of the Year at the 2011 American Business Awards 5Halozyme Therapeutics to Present Data on its Ultrafast Insulin Programs at the Upcoming American Diabetes Association 71st Scientific Sessions 2Halozyme Therapeutics to Present Data on its Ultrafast Insulin Programs at the Upcoming American Diabetes Association 71st Scientific Sessions 3
Molecular Biological Resources offers bulk quantities of existing protein products. Please see the Chimerx divisions website for existing products and contact lloconne@molbiores.com for pricing....
... scales with RS232 ports and sends that data ... type the weight into the program, BalanceTalk can ... use parser extracts required data , Add date/time ... Collect data at timed intervals , Keyboard macros ...
Peptide-affinity Purified Polyclonal Antibody to Prolactin Releasing Hormone Receptor (GPR10)...
... BalanceTalk XL provides balance data collection and automation ... Complete integration with Microsoft Excel , Pre-configured ... analyzers , New balances can be added and ... data from multiple balances into one spreadsheet ...
Biology Products: