Navigation Links
Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

Seeking to catch an arms-race maneuver in action, researchers have uncovered new evidence to explain how bacteria in the process of infecting a plant can shift molecular gears by excising specific genes from its genome to overcome the host plant's specific defenses.

Throughout evolution ?in the wild and in crops cultivated by humans ?plants have developed systems for resisting the attack of microbial pathogens, while these microbes themselves have depended on their ability to alter molecular attack strategies in order to flourish. In the new work, researchers have essentially caught one step of this arms race in action, and they have shed light on the molecular mechanisms employed by a bacterial pathogen to survive in the face of its host plant's defenses. The research is reported by John Mansfield and colleagues at Imperial College London, the University of the West of England, and the University of Bath.

Studying interactions between strains of the halo-bright pathogen and bean plants, the researchers found that the pathogenic bacteria essentially kicks out a section of its genome when it senses that its presence has been detected by the plant's defense system. Excising this so-called "genomic island" eliminates production of the bacterial protein detected by the plant and allows a more stealthy ?and successful ?invasion.

The reason the strategy can be successful is that the plant has evolved to recognize the presence of only certain bacterial proteins as warnings of an infection. This means that the bacteria can, in principle, evade detection if it can shut down production of the offending protein or proteins. In their study, the authors identify within the halo-bright pathogen genome a special island of DNA that encodes one such offending protein. But this genomic island also encodes enzymes that, when switched on, snip the DNA on either side of the island, resulting in the excision of the entire island from the genome. The researchers fou
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants
2. Plants, animals share molecular growth mechanisms
3. Plants respond similarly to signals from friends, enemies
4. Affymetrix Unveils Plans to Double Plant and Animal Genome Microarray Offering
5. Plant hemoglobins: Oxygen handlers critical for nitrogen fixation
6. Plants defy Mendels inheritance laws, may prompt textbook changes
7. Whats really making you sick? Plant pathologists offer the science behind Sick Building Syndrome
8. Plant Sacrifices Cells to Fight Invaders
9. Breakthrough System for Understanding Ocean Plant Life Announced
10. Plant pathologists evaluate eco-friendly alternatives to methyl bromide
11. Study: Plants use dual defense system to fight pathogens
Post Your Comments:
(Date:12/3/2014)... , Dec. 2, 2014   Marvin ... deployed, innovative test solutions for military, aerospace, and ... version of its successful TS-900 PXI semiconductor ... and features of high-end systems to customers at ... value compared to traditional ATE. ...
(Date:11/21/2014)... According to a new market research report ... Control, Intrusion Detection, Parking Management, Under Vehicle Inspection), End ... - Global Forecasts to 2020", published by MarketsandMarkets, The ... $25 Billion in 2014 and is expected to reach ... 8.69%. Browse 116 market data Tables and ...
(Date:11/21/2014)... Calif. , Nov. 20, 2014 Strict ... driver efficiency are piloting the North American and European ... of accidents growing, gesture recognition systems that are intuitive ... a mark in the industry. New ... Automotive Gesture Recognition Market in Europe ...
Breaking Biology News(10 mins):Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4
... of the best post-exercise recovery drinks could already be ... the American College of Sports Medicine conference this week. ... chocolate milk offered a recovery advantage to help repair ... drinks. Experts agree that the two-hour window ...
... called Bridget, was on display at the University today- ... staff and students with an exciting glimpse into the ... with celebrations marking the 50th anniversary of space research ... University of Leicester are involved in five instruments on ...
... gene that makes humans more susceptible to the potentially fatal ... virus affecting horses, according to scientists at the University ... the OAS1 gene has now been confirmed as increasing the ... a study led by Professor David Adelson (University ...
Cached Biology News:Chocolate milk is a 'natural' for post-exercise recovery 2Chocolate milk is a 'natural' for post-exercise recovery 3Life on Mars: University of Leicester to detect clues for alien existence 2Life on Mars: University of Leicester to detect clues for alien existence 3Mutant gene link to West Nile virus in horses 2
(Date:12/19/2014)... The empty capsules market is experiencing ... and technological innovations in the empty capsules market. ... the growth of the empty capsules market. , ... Scope of Report , The report will enrich ... firms to gauge the pulse of the market ...
(Date:12/19/2014)... Dec. 18, 2014   ISN has released ... Performance Indicators publication series. With data aggregated ... reported in 2013 within its online contractor management platform, ... key performance indicator (KPI) statistics. The ... publication is available in two industry specific ...
(Date:12/17/2014)... December 16, 2014 “Never say, ... Philipps- Universität Marburg’s Department of Physics, advises young ... the newly released SPIE Women in Optics ... too shy to ask questions.” , In the ... and mathematics) occupations ranging from university professor and ...
(Date:12/17/2014)... Texas (PRWEB) December 17, 2014 ... on Global Quartz Tubing industry. For an overview ... definition, classification, application, industry chain structure, industry overview, ... quartz tubing industry has witnessed rapid ... a number of acquisitions. This report mentions quartz ...
Breaking Biology Technology:Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 2Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 3Empty Capsules Market Hit to Reach $1,820 Million by 2019 - New Research Report by MarketsandMarkets 4ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 2ISN Releases Third Edition of US Contractor Health & Safety Performance Indicators Publication Series 3Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 2Network, Multitask, Persevere: SPIE Women in Optics Planner Subjects Share from Experience 32020 Quartz Tubing Market: Global Development & Forecasts Analysis Now at DeepResearchReports.com 2
... 18 Sigma-Aldrich (Nasdaq:,SIAL) announced today the ... System. N-TER allows researchers to reproducibly,interrogate gene ... types that,have previously not been considered amenable ... lipid-based siRNA transfection reagents exhibit a number,of ...
... today published analyses of its second-generation map of ... markers than the initial version unveiled in 2005. ... consortium describes how the higher resolution map offers ... common diseases, explore the structure of human genetic ...
... Oct. 17 Below is,updated text of Shire plc,s ... call times have been updated from an earlier,release. ... global specialty,biopharmaceutical company, will announce third quarter 2007 earnings ... be issued at: 12:00 GMT / 08:00 ET, ...
Cached Biology Technology:Sigma-Aldrich Introduces N-TER Nanoparticle siRNA Transfection System for Delivery of siRNA Into Difficult-to-Transfect Cell Types 2Consortium publishes Phase II map of human genetic variation 2Consortium publishes Phase II map of human genetic variation 3Consortium publishes Phase II map of human genetic variation 4Consortium publishes Phase II map of human genetic variation 5Consortium publishes Phase II map of human genetic variation 6Correction: Shire plc: Third Quarter 2007 results date notification November 1, 2007 2
... provides both long and short-term enriched housing ... in both quarantine and non-quarantine settings on ... also available utilizing our state-of-the-art social housing ... equipped with on site CDC quarantine facilities. ...
... This exceptionally sensitive nucleic acid gel stain ... low background in gels, making it ideal for ... standard UV transilluminators. SYBR Green I nucleic ... capillary electrophoresis, real-time PCR assays and bandshift ...
Synonym: modified Grace's Insect medium...
Schneider's Drosophila - Insect medium...
Biology Products: