HOME >> BIOLOGY >> NEWS
Vineyard weeds found to host Pierce's disease of grapes

St. Paul, Minn. (September 21, 2005) New research just released in the September issue of Plant Disease suggests that weeds commonly found in California's wine country may enable the spread of Pierce's disease of grapes, one of the most destructive plant diseases affecting grapes.

Pierce's disease is caused by Xylella fastidiosa, a bacterium transmitted by sharpshooters and spittlebugs. In response to outbreaks of Pierce's disease in central California, plant pathologists studied 29 weed species commonly found in California's San Joaquin Valley to see if the bacterium could survive on the weeds. Perennials and known feeding and breeding hosts of the glassy-winged sharpshooter were tested first, then plants particularly abundant in or near vineyards.

"Our objectives were to determine the fate of Pierce's disease infections in previously untested plant species associated with southern San Joaquin Valley vineyards, and compare survival of the infections in selected field and greenhouse-grown plants," said Christina Wistrom, staff research associate in the Department of Environmental Science, Policy and Management, University of California, Berkeley, CA.

The study revealed that environmental conditions have a major impact on bacterial growth in host plants. "Multiplication and systemic movement of X. fastidiosa varied among different plant species and environmental conditions, so weed species in vineyards must be evaluated on an individual basis to determine their potential contribution to Pierce's disease," Wistrom said. "Currently, Pierce's disease is controlled by reducing populations of the insect vector, either through insecticide sprays or habitat modification to remove insect breeding host plants. Our study reinforces the need for weed control in irrigation ditches and roadsides adjacent to vineyards, in regions with chronic Pierce's disease and established populations of sharpshooters, especially in warm weather," she said.

The
'"/>

Contact: Amy Steigman
asteigman@scisoc.org
651-994-3802
American Phytopathological Society
21-Sep-2005


Page: 1 2

Related biology news :

1. Fight weeds with plant pathogens
2. Why are there so many weeds in your garden this year?
3. Waters off Washington state only second place in world where glass sponge reefs found
4. First new multiple sclerosis gene found in 30 years
5. Obesity found to be a risk factor for multiple myeloma
6. Antibody-altering protein found in developing B cells
7. New use for a cell toxin found to inhibit survival proteins in cancer cells
8. New way to target and kill antibiotic-resistant bacteria found
9. Soil particles found to boost prions capacity to infect
10. Support for chromosomal theory of cancer found in cancers development of drug resistance
11. Massive herds of animals found to still exist in Southern Sudan

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)... N.J. , May 16, 2017  Veratad Technologies, ... provider of online age and identity verification solutions, announced ... K(NO)W Identity Conference 2017, May 15 thru May 17, ... Regan Building and International Trade Center. ... the globe and in today,s quickly evolving digital world, ...
(Date:5/6/2017)... , May 5, 2017 ... just announced a new breakthrough in biometric authentication ... exploits quantum mechanical properties to perform biometric authentication. These ... smart semiconductor material created by Ram Group and ... finance, entertainment, transportation, supply chains and security. Ram ...
(Date:4/19/2017)... York , April 19, 2017 ... as its vendor landscape is marked by the presence ... market is however held by five major players - ... Together these companies accounted for nearly 61% of the ... the leading companies in the global military biometrics market ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... September 21, 2017 , ... ... who enable the world’s most progressive pharma and biotech organizations to do more ... top pharma and biotech events in Q4. , DrugDev will demonstrate DrugDev Spark™, ...
(Date:9/20/2017)... ... 2017 , ... The award-winning producers behind the American Farmer ... innovations aimed at helping farmers solve the problem of nitrogen loss. The upcoming ... 8:30aET on RFD-TV. Check your local listings for more info. , As ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... of a study examining the effects of exoskeleton-assisted walking on gait parameters ... (SCI). The article, "Neuromechanical adaptations during a robotic powered exoskeleton assisted walking ...
(Date:9/19/2017)... ... 2017 , ... Participants of this educational webinar will learn ... with the advantages and disadvantages of ductless, filtered fume hoods, they will also ... , Attendees will learn from an industry expert about the different types of ...
Breaking Biology Technology:
Cached News: