Navigation Links
Plants send out signals attracting harmful bacteria, MU study finds
Date:4/24/2014

COLUMBIA, Mo. When bacteria attack plants, they often inject harmful proteins into the host plants' cells to weaken and suppress natural defenses. However, in some plants, bacteria attack once they've recognized the plant cells as a potential host. Now, researchers at the University of Missouri have identified and replicated the process that allows the bacteriaknown mostly for attacking tomatoesto invade its host. This discovery could lead to natural anti-infective treatments that work with food-producing plants to enhance resistance to harmful bacteria in the field.

"When potential pathogens enter host plants, a race ensues to deploy their respective disease and defense mechanisms," said Scott Peck, associate professor of biochemistry and a researcher in the Bond Life Sciences Center at MU. "Scientists have paid a lot of attention to how plants and other organisms recognize and respond to invading microbes, but little attention has been paid to how the signals transmitted by the organisms that are being attacked play a role in the process. Our work focuses on suppressing the signals from the plant that cue the bacteria to attack."

Peck and fellow researchers, including Jeffrey Anderson and Ying Wan, post-doctoral fellows in the Department of Biochemistry at the University of Missouri, found that plants produce a molecular signal that invites an attack from a pathogen.

The signaling system in the plant triggers a structure in bacteria similar in shape to a syringe which is used to "inject" the bacteria's harmful proteins into its target. The MU research team found a group of five acids from plants that trigger the bacteria.

"We know that microbes can disguise themselves by altering the proteins or molecules that the plant uses to recognize the bacteria, as a strategy for evading detection," Peck said. "Our results show that the plant can disguise itself from pathogen recognition by removing the signals needed by the pathogen to become fully virulent."

The findings will help scientists grow plants that are more resistant to infection and create natural defenses for plants that could render bacteria harmless.

The findings come from a collaboration of scientists led by Peck and researchers from the Biological Sciences Division at Pacific Northwest National Laboratory, and the Environmental Molecular Sciences Laboratory and the Department of Energy's Environmental Molecular Sciences Laboratory. The study, "Decreased abundance of type III secretion system-inducing signals in Arabidopsis mkp1 enhances resistance against Pseudomonas syringae,"was published in the Proceedings of the National Academy of Sciences and was funded by the National Science Foundation.


'/>"/>

Contact: Jeff Sossamon
sossamonj@missouri.edu
573-882-3346
University of Missouri-Columbia
Source:Eurekalert  

Related biology news :

1. Not just for the birds: Man-made noise has ripple effects on plants, too
2. Human noise has ripple effects on plants
3. Plants mimic scent of pollinating beetles
4. Stomata development in plants unraveled -- a valuable discovery for environmental research
5. Scientists study the catalytic reactions used by plants to split oxygen from water
6. Which plants will survive droughts, climate change?
7. A bit touchy: Plants insect defenses activated by touch
8. UCSB study shows forest insects and diseases arrive in US via imported plants
9. Nutrient and toxin all at once: How plants absorb the perfect quantity of minerals
10. Neural stem cell transplants for spinal cord injury maximized by combined, complimentary therapies
11. Autologous bone marrow-derived mononuclear cell transplants can reduce diabetic amputations
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Plants send out signals attracting harmful bacteria, MU study finds
(Date:4/26/2016)... LONDON , April 26, 2016 ... EdgeVerve Systems, a product subsidiary of Infosys (NYSE: ... a partnership to integrate the Onegini mobile security ... (Logo: http://photos.prnewswire.com/prnh/20151104/283829LOGO ) The ... enhanced security to access and transact across channels. ...
(Date:4/14/2016)... BioCatch ™, the global ... the appointment of Eyal Goldwerger as CEO. ... Goldwerger,s leadership appointment comes at a time of significant ... of its platform at several of the world,s largest ... unique cognitive and physiological factors, is a winner of ...
(Date:3/23/2016)... 23, 2016 ... Gesichts- und Stimmerkennung mit Passwörtern     ... MESG ), ein führender Anbieter digitaler ... mit SpeechPro zusammenarbeitet, um erstmals dessen Biometrietechnologie ... die Möglichkeit angeboten, im Rahmen mobiler Apps ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... 2016 , ... Cancer experts from Austria, Hungary, Switzerland, and ... new and helpful biomarker for malignant pleural mesothelioma. Surviving Mesothelioma has just published ... , Biomarkers are components in the blood, tissue or body fluids that ...
(Date:6/27/2016)... , June 27, 2016  Liquid Biotech ... announced the funding of a Sponsored Research Agreement ... circulating tumor cells (CTCs) from cancer patients.  The ... in CTC levels correlate with clinical outcomes in ... These data will then be employed to support ...
(Date:6/24/2016)... ... 24, 2016 , ... While the majority of commercial spectrophotometers and fluorometers use ... 6000i models are higher end machines that use the more unconventional z-dimension of 20mm. ... from the bottom of the cuvette holder. , FireflySci has developed several Agilent ...
(Date:6/23/2016)... CAMBRIDGE, Mass. , June 23, 2016 /PRNewswire/ ... the development of novel compounds designed to target ... compound, napabucasin, has been granted Orphan Drug Designation ... in the treatment of gastric cancer, including gastroesophageal ... cancer stemness inhibitor designed to inhibit cancer stemness ...
Breaking Biology Technology: