Navigation Links
E. coli an unlikely contaminant of plant vascular systems
Date:4/1/2011

This press release is available in Spanish.

A technique developed by U.S. Department of Agriculture (USDA) scientists for tracking pathogens has helped confirm that Escherichia coli is not likely to contaminate the internal vascular structure of field-grown leafy greens and thus increase the incidence of foodborne illness.

Agricultural Research Service (ARS) microbiologist Manan Sharma wanted to find out if plant roots could draw in E. coli pathogens from the soil when taking in nutrients and water. He and colleagues modified several types of E. coli-including some highly pathogenic strains that cause foodborne illness-by adding a gene for fluorescence. This allowed them to track the pathogen's journey from the field to the produce.

ARS is USDA's chief intramural scientific research agency, and this work supports the USDA priority of ensuring food safety.

The team, which is located at the ARS Environmental Microbial and Food Safety Laboratory in Beltsville, Md., confirmed that the pathogenic E. coli could survive in the soil for up to 28 days. They also observed that the fluorescent E. coli cells were capable of migrating into the roots of spinach plants.

The researchers also examined baby spinach plants over the course of 28 days after germination to see if any of the E. coli strains were taken up past the roots and into the plant's interior structures. For this part of the study, they grew baby spinach in pasteurized soil and hydroponic media.

At day 28, there was no evidence that the E. coli had become "internalized" in leaves or shoots of baby spinach plants grown in the pasteurized soil. E. coli could be detected in hydroponically-grown spinach samples, but its survival in shoot tissue was sporadic 28 days after the plants had germinated.

These findings strong
'/>"/>

Contact: Ann Perry
301-504-1628
United States Department of Agriculture - Research, Education and Economics
Source:Eurekalert

Page: 1 2

Related biology news :

1. When it comes to sleep research, fruit flies and people make unlikely bedfellows
2. Unlikely life thriving at Antarcticas Blood Falls
3. Scientific evidence of health problems from past contamination of drinking water at Camp Lejeune is limited and unlikely to be resolved with further study
4. Improved diet and exercise alone unlikely to cure obstructive sleep apnea in obese patients
5. Global warming and other environmental dangers may be solved by unlikely source -- space technology
6. Gulf oil dispersants unlikely to be endocrine disruptors and have relatively low cell toxicity
7. Link between cholesterol compound and multiple sclerosis unlikely, researchers say
8. Newly described contaminant sources in Katrina-flooded homes pose health risks
9. NIST issues human milk and blood serum SRMs for contaminant measurements
10. Bioavailable contaminants come from the Exxon Valdez oil catastrophe
11. Contaminants in groundwater used for public supply
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/11/2014)... , Dec. 09, 2014 Research and Markets ... ( http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced ... India 2015-2019" report to their offering. ... market is the adoption of multimodal biometric systems. ... of an individual for verification and identification purposes. ...
(Date:12/11/2014)... Minn. , Dec. 10, 2014  Data ... physiologic monitoring, has released a new series of ... of preclinical toxicology researchers. M series, part of ... toxicologists collect the best possible physiologic data when ... Adding functional endpoints to toxicology studies has ...
(Date:12/10/2014)... RALEIGH, N.C. , Dec. 9, 2014  Valencell, ... announced it is seeing a staggering demand from its ... demand, the Company revealed, is not solely coming from ... industries as well. "A wearable is only ... a result, accuracy is the ultimate driver in long-term ...
Breaking Biology News(10 mins):Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2New telemetry implants expected to change how large animal toxicology studies are conducted 2Wearable Technology Products Demand Highly Accurate Biometric Technology 2
... 2010, a Cathay Pacific Airways plane was arriving in Hong ... was forced to make a hard landinginjuring dozens. The potential ... diesel fuel is increasing as biodiesel becomes more popular and ... store and transport the two types of fuels. ...
... , This news release is available in ... of things -- be it the grains of sand on a beach, ... use a part of the brain that is organized topographically, researchers have ... "numerosity" assessment are laid out in a shape that allows those most ...
... A team of researchers led by Charles D. Nichols, ... Center New Orleans, has successfully translated a new technology ... flies. This powerful genetic tool Designer Receptors ... selectively, rapidly, reversibly, and dose-dependently remotely control behaviors and ...
Cached Biology News:University of Tennessee professor and student develop device to detect biodiesel contamination 2Finally mapped: The brain region that distinguishes bits from bounty 2Finally mapped: The brain region that distinguishes bits from bounty 3LSUHSC researchers develop new system to better study behavior, cell function 2
(Date:12/19/2014)... contrast to traditional LED lights where the spectrum is ... LED technology to incorporate their spectra in a single ... in low proximity installations. The Valoya L-series offers high ... is up to four times longer than commonly used ... clearly higher when compared to traditional fluorescent or LED ...
(Date:12/19/2014)... December 18, 2014 With only 2 ... special on Sartorius Biohit products . The product ... pipettes, Picus Electronic Pipette Trade-in Program, and free pipette ... Safety officers around the world. They are ideal for ... features include:, ,     Full volume range of ...
(Date:12/19/2014)... 2014 Egenix, Inc. is pleased to announce that ... the Board, to succeed Donald Fresne ; Mr. Fresne ... as a member of the Board.  In recognition of the ... company over almost twenty years, the Board designated Mr. Fresne ... has established a Search Committee to find a suitable replacement ...
(Date:12/19/2014)... Dec. 18, 2014 Relmada Therapeutics, Inc. (OTCQB: ... treatment of chronic pain, announced the results of its ... "This was a transformational year in Relmada,s history and ... our company," said Sergio Traversa , chief executive ... executed on key financial, human resource and clinical development ...
Breaking Biology Technology:Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2
... This release is available in German . ... RFID tags (Radio Frequency Identification) are increasingly finding their way ... or goods and identify them automatically by radio frequency. The ... the label. Smart labels can be affixed to goods under ...
... , SANTA CRUZ, Calif., Nov. 24 Two more ... online job board and careers site for life science professionals. ... job board, joining 28 other major life science training Institutions. ... post-graduates in the life sciences. While there are hundreds of ...
... ... field remains the only one to show consistent growth during the U.S. recession. However, clinics ... actually cut medical personnel, instead of just administrators. , ... (Vocus) November 24, 2009 -- Health care employment continued growing in ...
Cached Biology Technology:Intelligence inside metal components 2Two Major Universities Join Nation's Leading Postgrad Bio Job Board 2The MedZilla Report for October 2009 - Health Care Employment Grows Again in October Even As Clinics, Specialty Centers Close 2The MedZilla Report for October 2009 - Health Care Employment Grows Again in October Even As Clinics, Specialty Centers Close 3The MedZilla Report for October 2009 - Health Care Employment Grows Again in October Even As Clinics, Specialty Centers Close 4
... TempliPhi 100 Amplification Kit, 100 reactions. ... sequencing in 4-6 h.Generate microgram quantities ... of starting material.Use amplified DNA directly ... from bacterial or M13 liquid cultures, ...
Polypropylene test tube racks, used in Thermo Forma's line of Test Tube Rack holders...
For quantitative determination of Aldolase in Serum (an indicator of muscle damage). Ready-to-use liquid stable reagent. Formulated to eliminate interference from pyruvates. Application sheets are ...
This Universal 24" X 18" (61 X 45.7cm.) shaker platforms will accept any Thermo Forma shaker flask clip....
Biology Products: