Navigation Links
Poultry probiotic's coat clues to ability to battle bugs
Date:11/18/2013

IFR researchers have characterised the coat of a potential poultry probiotic, giving the first clues of how it may be used to exclude pathogenic bacteria from chickens.

Lactobacillus johnsonii has previously been shown to exclude Clostridium perfringens from the guts of poultry, opening the door to it being developed as a way of reducing necrotic enteritis in poultry and food poisoning in humans. Recently, researchers at the Institute of Food Research, which is strategically supported by the Biotechnology and Biological Sciences Research Council, found that the bacteria make coats for themselves that play important roles in colonisation in this strain.

Now, in a study published in The Journal of Biological Chemistry, the researchers present the first characterisation of what makes up this coat. This will give us a better idea of the role of the coat and help in the development of these bacteria as a way of combatting C. perfringens.

Using NMR spectroscopy, the researchers discovered that the coat is made up of two types of exopolysaccharides (EPS), which are long sugar-containing molecules that many bacteria use to encapsulate themselves. This capsule may help the bacteria to cope with environmental stress, or aid colonisation and adhesion. Different bacterial strains have different EPS structures, and understanding this is important as they represent a key way bacteria interact with the world around them.

'Characterising the EPS structures in the L. johnsonii strain is the first step to explaining how it might outcompete C. perfringens.' said Dr Arjan Narbad.

Previous studies had identified potential genes in L. johnsonii for producing EPS, giving the researchers tools to probe how the bacteria synthesise these molecules. Knocking out the whole cluster of EPS genes meant the bacteria produced no capsule. Further analysis of the genes by IFR PhD student Enes Dertli uncovered their potential roles in the capsule biosynthesis process but more research is needed to fully understand the system, and also how it is regulated.

The structures of these two EPS molecules appear to be unique to this strain. Structural features, such as the phosphorylation patterns, are likely to be a major influence on how well bacteria adhere. Other structural modifications such as acetylation are thought to help protect the EPS from the enzymes produced by gut bacteria.

This strain of Lactobacillus johnsonii is now being taken through farm-scale trials to assess its potential use to combat pathogenic infections of poultry by bacteria such as C. perfringens. This study provides insights into exactly how this works, and future work will focus on unpicking how the EPS molecules in the coat contribute to colonisation and pathogen exclusion.


'/>"/>

Contact: Andrew Chapple
andrew.chapple@ifr.ac.uk
44-016-032-514-590
Norwich BioScience Institutes
Source:Eurekalert  

Related biology news :

1. Investigators link poultry contamination on farm and at processing plant
2. Bird flu in live poultry markets are the source of viruses causing human infections
3. Appetite genes are key to better diets for poultry, study shows
4. Promoting poultry health through diet
5. £12 million funding to tackle devastating livestock and poultry viruses
6. Probiotics may add functionality to fruit juices
7. Study finds taking probiotics has benefits for patients in hospitals
8. Probiotics found to reduce hepatic encephalopathy
9. Study: Probiotics reduce stress-induced intestinal flare-ups
10. New study shows probiotics help fish grow up faster and healthier
11. Behind closed doors: Researchers show how probiotics boost plant immunity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Poultry probiotic's coat clues to ability to battle bugs
(Date:4/4/2017)... , April 4, 2017   EyeLock LLC ... announced that the United States Patent and Trademark Office ... broadly covers the linking of an iris image with ... transaction) and represents the company,s 45 th issued ... patent is very timely given the multi-modal biometric capabilities ...
(Date:3/30/2017)... YORK , March 30, 2017 Trends, ... type (physiological and behavioral), by technology (fingerprint, AFIS, iris ... voice recognition, and others), by end use industry (government ... and immigration, financial and banking, and others), and by ... Europe , Asia Pacific , ...
(Date:3/24/2017)... The Controller General of Immigration from Maldives Mr. Mohamed ... received the prestigious international IAIR Award for the most innovative high security ... ... Maldives Immigration Controller General, ... picture on the right) have received the IAIR award for the "Most ...
Breaking Biology News(10 mins):
(Date:6/28/2017)... June 28, 2017 (PRWEB) , ... ... ... latest release of Siemens’ STAR-CCM+® software for multiphysics computational fluid dynamics (CFD) ... product design exploration and optimization. STAR-CCM+ version 12.04 introduces Design Manager, allowing ...
(Date:6/27/2017)... ... 2017 , ... Brain State Technologies, a leading neurotechnology company, ... 15th to fund production of the new B2v2 wearable brainwave balancing headband. Over ... more than 150% in a little over a week. , Utilizing Brain State’s ...
(Date:6/27/2017)... Iowa (PRWEB) , ... June 27, 2017 , ... ... technology license agreement whereby DuPont gains exclusive rights to the ERS patent portfolio ... ERS was formed to commercialize the foundational intellectual property (IP) of the CRISPR-Cas ...
(Date:6/26/2017)... ... June 26, 2017 , ... Two new members were elected to ... June 9, 2017: Jeremy Nowak, President, J Nowak Strategy and Michele Masucci, Ph.D., Vice ... election of Glen N. Gaulton and Kenneth L. Kring, and re-election of David P. ...
Breaking Biology Technology: