Navigation Links
NIST/UMass study finds evidence nanoparticles may increase plant DNA damage
Date:4/18/2012

Researchers at the National Institute of Standards and Technology (NIST) and the University of Massachusetts Amherst (UMass) have provided the first evidence that engineered nanoparticles are able to accumulate within plants and damage their DNA. In a recent paper,* the team led by NIST chemist Bryant C. Nelson showed that under laboratory conditions, cupric oxide nanoparticles have the capacity to enter plant root cells and generate many mutagenic DNA base lesions.

The team tested the man-made, ultrafine particles between 1 and 100 nanometers in size on a human food crop, the radish, and two species of common groundcovers used by grazing animals, perennial and annual ryegrass. This research is part of NIST's work to help characterize the potential environmental, health and safety (EHS) risks of nanomaterials, and develop methods for identifying and measuring them.

Cupric oxide (also known as copper (II) oxide or CuO) is a compound that has been used for many years as a pigment for coloring glass and ceramics, as a polish for optics, and as a catalyst in the manufacture of rayon. Cupric oxide also is a strong conductor of electric current, a property enhanced at the nanoscale level, which makes the nanoparticle form useful to semiconductor manufacturers.

Because cupric oxide is an oxidizing agenta reactive chemical that removes electrons from other compoundsit may pose a risk. Oxidation caused by metal oxides has been shown to induce DNA damage in certain organisms. What Nelson and his colleagues wanted to learn was whether nanosizing cupric oxide made the generation and accumulation of DNA lesions more or less likely in plants. If the former, the researchers also wanted to find out if nanosizing had any substantial effects on plant growth and health.

To obtain the answers, the NIST/UMass researchers first exposed radishes and the two ryegrasses to both cupric oxide nanoparticles and larger sized cupric oxide particles (b
'/>"/>

Contact: Michael E. Newman
michael.newman@nist.gov
301-975-3025
National Institute of Standards and Technology (NIST)
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Long-term study shows effect of climate change on animal diversity
2. £2 million study to reveal workings of dementia genes
3. New study looks to define evangelicals and how they affect polling
4. CU-Boulder study suggests air quality regulations miss key pollutants
5. Researchers study acoustic communication in deep-sea fish
6. Study reveals homeowner perceptions in fire-prone areas
7. Researchers study how pistachios may improve heart health
8. Study: urban black bears live fast, die young
9. New study indicates link between weight gains during pregnancy and dieting history
10. Study reveals specific gene in adolescent men with delinquent peers
11. Sweat it out: UH study examines ability of sweat patches to monitor bone loss
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
NIST/UMass study finds evidence nanoparticles may increase plant DNA damage
(Date:2/23/2015)... 23, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile commerce ... 62114357 for DISTRIBUTED VOICE DIRECTED PAYMENT METHOD ... a new groundbreaking payment method. Payment accounts may be ... only be accessed if both the speech (the word ...
(Date:2/18/2015)... Feb. 18, 2015  Cepheid (NASDAQ: CPHD ) ... following conferences, and invited investors to participate via webcast. ... MA Tuesday, March 3, 2015 at 11.20 a.m. ... Orlando, FL Wednesday, March 4, 2015 at ... access the live webcasts for these events, please visit Cepheid,s ...
(Date:2/12/2015)... Feb. 12, 2015   MedNet Solutions , ... clinical study management systems, has recently bolstered its ... distinguishing iMedNet as the ... (CROs) and healthcare consultants.  Building on the Program,s ... referrals and numerous co-marketing opportunities), MedNet,s new and ...
Breaking Biology News(10 mins):NXT-ID Patents Voice Directed Payments 2NXT-ID Patents Voice Directed Payments 3Cepheid to Webcast Upcoming Financial Presentations 2MedNet Solutions Announces Key Enhancements To Its iMedNet Partner Program 2
... threatened by exotic species of the moon jellyfish being ... Using genetic data and computer simulations of ocean currents ... South Wales and the University of California, Davis, have ... naturally, according to a report in today's Proceedings of ...
... has discovered how a gene that suppresses the development of ... way to treatments based on the function of the gene. ... Hormel Institute in Austin, Minn., have applied for a patent ... July 10 in the journal Nature Structural & Molecular Biology. ...
... suggested that ancient Neanderthals might have had an accelerated childhood ... based on a new assessment by researchers from Ohio State ... found that the rate of tooth growth present in the ... different populations of modern humans. , And since the ...
Cached Biology News:Ships bring alien jellyfish invaders to our shores 2Neanderthal teeth grew no faster than comparable modern humans' 2Neanderthal teeth grew no faster than comparable modern humans' 3
(Date:3/3/2015)... , March 3, 2015 Kindred Biosciences, Inc. ... saving and improving the lives of pets, announced today that ... results on March 12, 2015 after the market close. The ... Time that day. Interested parties may access ... or (484) 756-4262 internationally, and using conference ID 98449349.  ...
(Date:3/3/2015)... 03, 2015 Cambridge Semantics, the leading ... technology, today announced that it has been named to ... in Knowledge Management.’ , To create the list ... analysts and system integrators who identify organizations dedicated to ... right information to the right people at the right ...
(Date:3/3/2015)... , Mar. 03, 2015 Research and ... the addition of Jain PharmaBiotech,s new report ... to their offering. , Gene ... vectors, nonviral vectors and cell therapy with genetically ... of drug delivery and various routes of administration ...
(Date:3/3/2015)... , March 3, 2015 DNA Diagnostics Center ... in the world, celebrates its 20 th anniversary ... , DDC is a consumer services company that focuses ... employs over 200 associates and generates a significant portion ... over 120 countries. Peter Vitulli ...
Breaking Biology Technology:Cambridge Semantics Named to KMWorld’s 2015 ‘100 Companies That Matter in Knowledge Management’ 2Gene Therapy Market Report 2014-2024 - Technologies, Markets and Companies 2Gene Therapy Market Report 2014-2024 - Technologies, Markets and Companies 3DNA Diagnostics Center, One of The World's Largest DNA Testing Labs, Celebrates Their 20th Anniversary 2DNA Diagnostics Center, One of The World's Largest DNA Testing Labs, Celebrates Their 20th Anniversary 3
... Conn., Feb. 14 Biodel Inc. (Nasdaq:,BIOD) today reported ... The net loss for the quarter was $11.0 million ... pivotal Phase III clinical trials of,VIAject(TM) positions us to ... the FDA by the end of 2008," stated Dr. ...
... Product that Meets Regulatory &, Health Issues ... ORLANDO, Fla., Feb. 14 Valensa International ... the extraction of,Haematococcus pluvialis for the manufacture of ... of recently growing demand for a,high-quality astaxanthin in ...
... 2007 Launch; Positioned for Expanded Growth in ... U.S. and International Markets, Fourth Quarter and 2007 Financial Highlights:, ... compared to net product sales of $21.8 million in Q3 2007., ... a GAAP net loss of $20.1 million, or $0.55 per share, ...
Cached Biology Technology:Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 2Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 3Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 4Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 5Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 6Biodel Inc. Reports First Quarter Fiscal Year 2008 Financial Results 7Valensa Expands Astaxanthin Extraction Capacity 2Alexion Reports Fourth Quarter and Full Year 2007 Results 2Alexion Reports Fourth Quarter and Full Year 2007 Results 3Alexion Reports Fourth Quarter and Full Year 2007 Results 4Alexion Reports Fourth Quarter and Full Year 2007 Results 5Alexion Reports Fourth Quarter and Full Year 2007 Results 6Alexion Reports Fourth Quarter and Full Year 2007 Results 7Alexion Reports Fourth Quarter and Full Year 2007 Results 8Alexion Reports Fourth Quarter and Full Year 2007 Results 9Alexion Reports Fourth Quarter and Full Year 2007 Results 10Alexion Reports Fourth Quarter and Full Year 2007 Results 11Alexion Reports Fourth Quarter and Full Year 2007 Results 12Alexion Reports Fourth Quarter and Full Year 2007 Results 13
This kit is designed to select cells labeled with fluorescein isothiocyanate- (FITC-) conjugated antibodies. Kit includes reagents for labeling 3 x 10 9 cells and EasySep magnet....
... described by end-users to be "a delight ... of light microscopy and electronic imaging. With ... does not require much space and can ... environment. The DM-BA300 combines Motic's own revolutionary ...
lid holder -see Blotters (Semi-Dry) for more info...
When added to either StemSep CD4+ or CD8+ T Cell Enrichment cocktails, human CD69 TAC is designed to deplete human CD69 from samples to isolate resting CD4+ or CD8+ T cells....
Biology Products: