Navigation Links
NJIT study shows nanoparticles could damage plant life

A nanoparticle commonly used in industry could have a damaging effect on plant life, according to a report by an environmental scientist at New Jersey Institute of Technology (NJIT).

The report, published in a recent issue of "Toxicology Letters," shows that nanoparticles of alumina (aluminum oxide) slowed the growth of roots in five species of plants -- corn, cucumber, cabbage, carrot and soybean. Alumina nanoparticles are commonly used in scratch-resistant transparent coatings, sunscreen lotions that provide transparent-UV protection and environmental catalysts that reduce pollution, said Daniel J. Watts, PhD, the lead author of the study.

"Before this study there was an assumption that nanoparticles had no effect on plants," said Watts, executive director of the York Center for Environmental Engineering and Science and Panasonic Chair in Sustainability at NJIT. "This study makes the observation that seedlings can interact with nanoparticles such as alumina, which can have a harmful effect on seedlings and perhaps stunt the growth of plants. "Other nanoparticles included in the study, such as silica, did not show this effect," Watts added. He did the study with Ling Yang, a doctoral student who recently graduated from NJIT.

The authors conducted the study by allowing seeds to germinate on wet filter paper in Petri dishes, after which they added known quantities of nano-sized alumina suspended in water. The control portion of the experiment was treated only with water, and the authors observed the experiment for seven days. During that time, they measured the differences in the growth of the plants' roots, which were shown to be statistically significant.

"We suppose that the surface characteristics of the nanoparticles played an important role in slowing the growth of the roots," said Watts. "The smaller the particle, the larger is the total amount of surface area per unit weight. So the smaller you make the particles, the larg er is the surface area, which we suspect is what contributes to the growth-slowing interaction between the seeds and the nanoparticles. The small size of the nanoparticles may be changed by the nanoparticles aggregating or clumping together."

But what is still not understood, said Watts, is the nature of the interaction between the nanoparticle and the root of the seed. "What is the mechanism of the interaction between the particle and the root? That we don't know as yet," he said.

Nanoparticles can be deposited into air by exhaust systems, chimneys or smoke stacks, said Watts. The particles can also mix with rainwater and snow and gradually work their way into soil. It is difficult to take results from a lab experiment and conclude that is what happens in the real world, said Watts. "But we speculate that air deposits of nanoparticles or water transport of them are ways in which nanoparticles could mix with plant life," he said.


'"/>

Source:New Jersey Institute of Technology


Related biology news :

1. Bioartificial kidney under study at MCG
2. W.M. Keck Foundation funds study of friendly microbes
3. Yellowstone microbes fueled by hydrogen, according to U. of Colorado study
4. Genome-wide mouse study yields link to human leukemia
5. Clam embryo study shows pollutant mixture adversely affects nerve cell development
6. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
7. Same mutation aided evolution in many fish species, Stanford study finds
8. Sequencing of marine bacterium will help study of cell communication
9. Genetically modified rice in China benefits farmers health, study finds
10. A new study examines how shared pathogens affect host populations
11. NYU study reveals how brains immune system fights viral encephalitis
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/15/2016)... March 15, 2016 --> ... by Transparency Market Research "Digital Door Lock Systems Market - ... - 2023," the global digital door lock systems market in ... 2014 and is forecast to grow at a CAGR of ... small and medium enterprises (MSMEs) across the world and high ...
(Date:3/11/2016)... http://www.apimages.com ) - --> http://www.apimages.com ... at AP Images ( http://www.apimages.com ) - Germany ... produce the new refugee identity cards. DERMALOG will be unveiling this ... Hanover next week.   --> ... to produce the new refugee identity cards. DERMALOG will be unveiling ...
(Date:3/9/2016)... YORK , March 9, 2016 This ... and future states of the RNA Sequencing (RNA Seq) ... segments such as instruments, tools and reagents, data analysis, ... Analyze various segments of the RNA-Sequencing market such as ... services Identify the main factors affecting each segment and ...
Breaking Biology News(10 mins):
(Date:5/3/2016)... ... May 03, 2016 , ... Morf ... and compliance training platform on mobile devices, today released a new interactive ... for Medical Devices. The course is essential for owners or operators of places ...
(Date:5/3/2016)... ... 2016 , ... Kerafast Inc., developers of an online ... globe, today announced the availability of a Zika virus antibody from Vanderbilt University. ... prevention measures for the Zika virus, the virus’s geographical distribution continues to widen ...
(Date:5/3/2016)... New York, NY (PRWEB) , ... May 03, 2016 , ... ... Lenox Hill Hospital , for definitive prostate cancer treatment, patients traditionally had two main ... an appropriate treatment plan would be made. , New technology has enabled doctors ...
(Date:5/2/2016)... ... May 02, 2016 , ... StarNet Communications Corp, ( http://www.starnet.com/ ) a leading ... Secure Remote Desktop modules to its flagship X-Win32 PC X server. The new ... to the user’s PC over encrypted SSH. , Traditionally, users of PC X servers ...
Breaking Biology Technology: