As concerns grow over the threat of bioterrorism and weapons of mass destruction, Penn State University genetic researchers are working on an early warning system -- the figurative canary in the mineshaft -- that could be as unobtrusive and ubiquitous as plants in a landscape. This "canary" is a specially engineered plant or group of plants designed to detect and signal the presence of many harmful chemical or biological agents.
In theory, soldiers could be equipped with a hand-held electronic device. When pointed at a native plant, the readings on the device would indicate the plant was exposed to nerve gas some time in the last several hours or several days. At present such a device does not exist.
To develop such technology, the Defense Advanced Research Projects Agency has awarded Penn State University a 3 year, $3.5 million grant to lay groundwork for genetically engineered plants that can detect the presence of harmful nerve agents. Plants are a suitable candidate because they are rooted to their environment, and cannot move out of a given area like an insect or other animal. They can therefore become a short-term history book of their environment over the last several days. Just as a plant will wilt without water, or become lighter green with less nitrogen, a plant that is genetically altered to become sensitive to a nerve agent or other chemical compounds poisonous to humans would retain certain effects of its exposure.
Plants and animals detect and respond to a range of things -- including microbes, insects, chemicals and hormones -- via cellular proteins. These proteins, called receptor-like kinases (RLKs), have a sensing domain outside the cell membrane that binds molecules in the environment. This binding sends a signal inside the cell to the response domain, known as the kinase, which then turns on genes that trigger a response. One of the plants being studied at Penn State is Arabidopsis, a small flowering plant from the mustard family that grows around the world and is widely used as a model organism in plant biology.
Even detection of something such as explosives in the soil is under research. A military commander, with the proper electronic device, could receive a readout from a plant in his locale that could indicate the presence of explosives nearby. Of course, such genetically modified plants would have to be planted into the environment ahead of time, which may pose its own set of problems.
Jack Schultz, a chemical ecologist and professor of entomology in the College of Agricultural Sciences, indicates in the Penn State extension website that their experiments may eventually aid the agricultural community as well. One example given was that a sensor could be mounted on the front of a farm tractor traveling across a field when operating a pesticide sprayer. The sensor could detect the presence of a certain weed or insect pest and turn the sprayer on or off or add different chemical components for a given section of the field, and thus reduce the total volume of pesticides used.
Tom Clouser is a 38 year old farmer in Pennsylvania. In addition to farming, he and his father publish a monthly 16-page newspaper called "Trees 'n' Turf", which targets subjects of interest to those in land use industries and activities. View their website at http://www.clouserfarm.net
|
|
|
|
|
|
|
|
|
|
|


We need a government that can be as responsive to... Read More
I always have to remember to take a deep breath... Read More
Where are all the high-speed trains we were promised? Where... Read More
In 1966, Dr. Carroll Quigley, a professor of history at... Read More
The No Child Left Behind can work if the Federal... Read More
The filibuster has been a tool available to U.S. Senators... Read More
Let the reader be reminded, that this document we are... Read More
Is the Federal Trade Commission really stopping SPAM? Is the... Read More
Believe it or not, every theatre, church, or Britney Spears... Read More
Public utilities and a problematic issue on the allowance of... Read More
The US Dollar has been falling continuously in last year.... Read More
In years past California Mutual Assistance Program and emergency response... Read More
Why did FDR say Benjamin Franklin, Thomas Jefferson and Count... Read More
Since the court case was over turned against Arthur Anderson... Read More
The partisan feuding in the U.S. Senate over federal judicial... Read More
The FTC franchising division purports their law enforcement experience in... Read More
Many of those who wish to fight for our country... Read More
Let's make one thing clear: This Dan Nelson Automotive fiasco... Read More
Many in the World Media are quick to judge the... Read More
For more than a decade, you the American taxpayer have... Read More
We know that the International Terrorists like the idea of... Read More
Incompetence is all too obvious at the trade shows of... Read More
The North American Trade Agreement (NAFTA) was implemented on January... Read More
Visible remnants of the world's eldest democracy can be seen... Read More
Is the only way to fight Fundamentalist Extremists becoming one... Read More
The European Court of Justice ("ECJ") ruled in Praktiker Bau-... Read More
Government budgets represent between 25% and 50% of he Gross... Read More
Many environmentalists are against roads through the forest because it... Read More
PolicyFederal Fair Housing accessibility requirements for new multifamily buildings should... Read More
This is no time for the Black community to sue... Read More
Regarding the issues with the Space Shuttle and the in... Read More
Tulipmania - this is the name coined for the first... Read More
The use of religion is well-documented as a social engineering... Read More


THE ECCLESIASTICAL GRANT:There are good things done by the hegemony.... Read More
A coffee shop conversation about a Great Country in Historic... Read More
Here is an interesting thought; Corn to make Plastic An... Read More
As the Baby Boomer Generation continue to get older, one... Read More
Nothing could be more alarming for Americans than what I... Read More
How much oil can travel through a pipeline? It depends... Read More
You are not going to believe what is going on... Read More
Ted Stevens (R-Alaska), chairman of the Senate Commerce Committee, has... Read More
Sizing up North Korea is important for a war there.... Read More
We are seeing some trade wars brewing as American trade... Read More
The official figures are staggering: 35% of the workforce -... Read More
An interesting conversation that I thought I must share with... Read More
For years we've suffered under recession, prompting us to ask,... Read More
The most exciting event in Slovenia last week was when... Read More
Tulipmania - this is the name coined for the first... Read More
Heavens, what are we up against? It seems these days... Read More
Recently the FTC, Federal Trade Commission put forth a report... Read More
The number-one question people ask us is, "What possessed you... Read More
America must implement a policy on Election Reform that is... Read More
Many of the problems that the members of the European... Read More
When you look at the news, immigrants are dying trying... Read More
The Federal Trade Commission has very important Anti-trust Laws. They... Read More
The United States has never done a full study on... Read More
There is no doubt in hindsight that Sarbanes Oxley was... Read More
The American Dream is the promise to have it all... Read More
Why are we over regulating the franchising industry? What are... Read More
History repeats itself, goes the cliche. It does so, perhaps,... Read More
Public utilities and a problematic issue on the allowance of... Read More
The United States has enemies, which call the country the... Read More
Long Term Environmental Effect of Plastics, Composites and Other Materials... Read More
[Author's Note: Another essay that I wrote on notebook paper... Read More
There is debate about the methodology of forestry and also... Read More
The prosecutors in the Martha Stewart Case used testimony from... Read More
Political |