Featured Research

from universities, journals, and other organizations

Bacterial Virus Gene Confers Disease Resistance In Tall Fescue Grass

Date:
March 20, 2007
Source:
North Carolina State University
Summary:
Researchers have discovered that inserting a specific gene from a bacterial virus into tall fescue grass makes the grass resistant to two of its biggest enemies.

Researchers at North Carolina State University have discovered that inserting a specific gene from a bacterial virus into tall fescue grass makes the grass resistant to two of its biggest enemies.

The NC State researchers showed that the inserted gene – the T4 lysozyme gene, a gene found in bacteriophages, or bacterial viruses – conferred high resistance to gray leaf spot disease in six of 13 experimental grasses. Three of the six resistant grasses also showed high resistance to brown patch disease. These two diseases are arguably the most important – and severe – fungal diseases affecting tall fescue grass.

The finding has the potential to have wide applications in engineering resistance to a variety of fungal diseases in not only tall fescue grass – the most widely planted turfgrass in North Carolina and a commonly utilized grass in the southeastern United States – but various other crops.

The collaborative research involves four faculty members: Dr. Ron Qu in the Department of Crop Science, Drs. H. David Shew and Lane Tredway from the Department of Plant Pathology, and Dr. Eric Miller, in the Department of Microbiology. The research was mainly performed by Dr. Shujie Dong, a post-doctoral researcher who was a graduate student of Qu’s, with assistance from two other scientists in Qu’s lab – Drs. Jianli Lu and Elumalai Sivamani.

About half of the turfgrass planted in North Carolina – one million acres – is tall fescue grass, a cool-season grass that has a high tolerance for the heat and drought of North Carolina summers, Tredway says. It is ubiquitous in the Southeast, found on lawns, golf courses and commercial acreages.

Gray leaf spot disease is caused by the Magnaporthe grisea fungus, the pathogen that also causes rice blast – the major disease of rice plants. Gray leaf spot causes round or oval tan spots that turn gray when there’s high humidity. It infects blades to make the grasses die rapidly.

Brown patch disease, caused by the soil-dwelling fungus Rhizoctonia solani, a major pest to various plant species, brings about circular, brown lesions on grass. Lawns with brown patch disease appear wilted, even if watered sufficiently, the researchers say.

Miller, the microbiologist, says that the bacterial viruses exist widely in different environments, and produce an array of products that are harmful to bacteria; as viruses attempt to spread, which they need to do in order to survive and thrive, the T4 lysozyme gene produces the enzymes that chew through the bacterial cell walls.

Miller says that the lysozyme now made by the grass does essentially the same thing to a fungus when it tries to infect, thereby providing anti-fungal properties in tall fescue and allowing the grass to withstand fungal disease.

Tredway says the benefits of potential applications may be felt economically and environmentally.

“A lot of money is spent on fungicides, which also have an impact on the environment,” he said. “Disease-resistant plants have the potential to reduce those economic and environmental impacts for many years.”

Qu says that future research will replicate this experiment in the field, rather than just in the lab, and that other disease resistance genes show anti-fungal properties in tall fescue. He also hopes to study how the group’s genetically altered plants interact with other important fungal diseases to further test their anti-fungal mettle.

Much of the work was funded by NC State’s Center for Turfgrass Environmental Research and Education and the Turfgrass Council of North Carolina.

Reference: “Expression of the Bacteriophage T4 Lysozyme Gene in Tall Fescue Confers Resistance to Gray Leaf Spot and Brown Patch Diseases”

Authors: Shujie Dong, H. David Shew, Lane P. Tredway, Jianli Lu, Elumalai Sivamani, Eric S. Miller and Rongda Qu, North Carolina State University

Published: February 2007 in Transgenic Research


Story Source:

The above story is based on materials provided by North Carolina State University. Note: Materials may be edited for content and length.


Cite This Page:

North Carolina State University. "Bacterial Virus Gene Confers Disease Resistance In Tall Fescue Grass." ScienceDaily. ScienceDaily, 20 March 2007. <www.sciencedaily.com/releases/2007/03/070319204727.htm>.
North Carolina State University. (2007, March 20). Bacterial Virus Gene Confers Disease Resistance In Tall Fescue Grass. ScienceDaily. Retrieved April 21, 2014 from www.sciencedaily.com/releases/2007/03/070319204727.htm
North Carolina State University. "Bacterial Virus Gene Confers Disease Resistance In Tall Fescue Grass." ScienceDaily. www.sciencedaily.com/releases/2007/03/070319204727.htm (accessed April 21, 2014).

Share This



More Plants & Animals News

Monday, April 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Breakfast Foods Are Getting Pricier

Breakfast Foods Are Getting Pricier

AP (Apr. 21, 2014) Breakfast is now being served with a side of sticker shock. The cost of morning staples like bacon, coffee and orange juice is on the rise because of global supply problems. (April 21) Video provided by AP
Powered by NewsLook.com
Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins