Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Plant pathologists find growing number of plants affected by sudden oak death

08.04.2003


The newly discovered disease, Sudden Oak Death (SOD), is quickly gaining a reputation, and it’s not a good one. SOD is tenacious and lethal, using as many as 26 different plants as hosts and spreading in ways scientists don’t completely understand. Now, recent research suggests that SOD is capable of using an even greater number of host plants than previously thought. While this is not necessarily good news, it does help shed light on why SOD has been so quick to spread.



"SOD is deadly for oaks and it’s impacting many other species as well," states Matteo Garbelotto, an extension forest pathologist and adjunct professor at the University of California, Berkeley, and a leading researcher on SOD. Not long after the isolation of the microbe causing SOD by U. C. Davis Professor Dave Rizzo in 2000, plant pathologists began to suspect that while oaks were the direct victims of the disease, other plants were involved in spreading it. Plants from the rhododendron family were among the first host plants identified. "What we hypothesized and what we’re now confirming," says Garbelotto, "is that SOD is not spreading via the oaks, but is instead using a huge range of native plants for reproduction."

In fact, research by Garbelotto and Rizzo indicates that nearly all of the main tree species in California’s forests, as well as forest shrubbery and undergrowth, may act as hosts for SOD. SOD appears to use the leaves, branches and stems of these plants to reproduce, resulting in lesions and leaf discoloration. It doesn’t kill the host plant outright, but scientists say repeated SOD infections are likely to weaken the plant over time, negatively impacting its growth and making it susceptible to other diseases and insects.


And the more host plants SOD is able to use, the greater its potential impact on California’s forests and ecosystems. Says Garbelotto, "SOD’s reproductive strategy may make it able to persist indefinitely in infested forests and may affect the success of future regeneration and restoration efforts." While these new developments are worrisome, they are not without hope. "The more we know about how SOD is spreading, the greater the chances for finding a way to control it," says Garbelotto.


And there is great news for those interested in learning more. Those working on the front lines of SOD will be sharing what they know, what they don’t know, and what they hope to learn when they convene for a special online meeting and discussion forum, "Sudden Oak Death – How Concerned Should You Be?" April 21 - May 4, 2003 at http://sod.apsnet.org. It’s free and anyone with an interest in SOD is invited to participate.

There is also a full report on the recent research by Garbelotto and his colleagues on APS’s website at www.apsnet.org. The American Phytopathological Society (APS) is a professional scientific organization dedicated to the study and control of plant diseases with 5,000 members worldwide.

Cindy Ash | EurekAlert!
Further information:
http://www.apsnet.org/

More articles from Agricultural and Forestry Science:

nachricht New study shows producers where and how to grow cellulosic biofuel crops
17.01.2018 | University of Illinois College of Agricultural, Consumer and Environmental Sciences

nachricht Robotic weeders: to a farm near you?
10.01.2018 | American Society of Agronomy

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

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

Im Focus: Artificial agent designs quantum experiments

On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.

We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...

Im Focus: Scientists decipher key principle behind reaction of metalloenzymes

So-called pre-distorted states accelerate photochemical reactions too

What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...

Im Focus: The first precise measurement of a single molecule's effective charge

For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.

Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...

Im Focus: Paradigm shift in Paris: Encouraging an holistic view of laser machining

At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.

No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...

Im Focus: Room-temperature multiferroic thin films and their properties

Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.

Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

10th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Münster, 10-11 April 2018

08.01.2018 | Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

 
Latest News

Let the good tubes roll

19.01.2018 | Materials Sciences

How cancer metastasis happens: Researchers reveal a key mechanism

19.01.2018 | Health and Medicine

Meteoritic stardust unlocks timing of supernova dust formation

19.01.2018 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>