Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gene Gives Plants a Unique Defense against Disease

31.10.2001



Researchers have put a new face on what may be an old genetic weapon to help plants fight off a pesky infection. Abhaya Dandekar and colleagues at the University of California at Davis gave plants an extra gene that protected them from crown gall disease—a scourge of the walnut, grape and rose, among others—when tested in the lab. They publish their findings today in the Proceedings of the National Academy of Sciences.

When the bacterium that causes crown gall disease enters a plant, it starts producing two proteins that help the bug multiply—a phenomenon that leads to cancer in the host. In order to give plants a fighting chance, the researchers engineered strains of the thale cress and the Moneymaker breed of tomato to produce RNA molecules that would inhibit the disease-causing genes. (The tomato pictured here did not come from a plant engineered in this experiment.) Almost all of the transformed plants remained tumor-free after infection with their bacterial foe. This so-called gene-silencing approach, in which one RNA molecule zippers onto a target RNA and shuts it down before it can become a protein, may in fact be an ancient plant defense against certain viruses, Dandekar says. "This whole area is going to provide new ways to combat plant disease," he predicts.

The crown gall bacterium should find it difficult to rapidly evolve a way around the silencers, the team reports, because the tumor-causing genes are very similar in different strains and would have to change drastically to become resistant. There is also little chance of the resistance genes spreading, Dandekar explains, because the roots and tops of crop plants are typically fused together from different strains, with the roots containing any genetic alterations. The plants could still spread the bacterium, though, the authors note. And like all genetic approaches, Dandekar adds, this one cannot help a field already infested with the disease

J. R. Minkel | Scientific American

More articles from Life Sciences:

nachricht Cancer diagnosis: no more needles?
25.05.2018 | Christian-Albrechts-Universität zu Kiel

nachricht Less is more? Gene switch for healthy aging found
25.05.2018 | Leibniz-Institut für Alternsforschung - Fritz-Lipmann-Institut e.V. (FLI)

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>