Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Periwinkle Plants Provide Ammunition in the War on Citrus Greening

27.04.2010
A team of scientists from the Agricultural Research Service (ARS) and the University of Florida’s Indian River Research and Education Center (IRREC) have turned an ornamental plant into a tool for combating a bacterial disease that threatens the world’s citrus crop.

Periwinkle (Catharanthus roseus) has proved to be an effective screening tool for treatments to control Huanglongbing (HLB), according to Yong-Ping Duan of the ARS U.S. Horticultural Research Laboratory (USHRL) in Fort Pierce, Fla.

HLB, also known as citrus greening, is one of the most destructive diseases of citrus worldwide. Caused by three closely related species of bacteria, there is no known cure for HLB and no established effective treatments. It remains a threat not only to the citrus industry in Florida, where it was discovered in 2005, but to citrus nationwide. The search for controls has been hampered in part because infected citrus plants are difficult to regenerate and study.

Duan and his colleagues have found that periwinkle performs well as a stand-in for citrus, becoming quickly infected with HLB bacterium and responding well to antibiotic compounds tested to reduce infection. Duan’s colleagues included William W. Turechek and Ed Stover, both at USHRL, and Mu-Qing Zhang, Lijuan Zhou and Charles A. Powell of IRREC.

The researchers used HLB-infected lemon trees to infect periwinkle plants and then ran greenhouse experiments to find the optimal nutrient and soil treatments for regenerating periwinkle with high infection rates. They also soaked infected periwinkle cuttings in different chemical compounds and found that two of them performed well as potential HLB treatments.

The team published the results in the journal Phytopathology. Duan emphasized that the results are limited to greenhouse settings and that the chemical compounds, penicillin G sodium and biocide 2,2-dibromo-3-nitrilopropionamide (DBNPA), must still be evaluated in field trials and approved for use by regulatory agencies before commercial use is possible.

ARS is the principal intramural scientific research agency of the U.S. Department of Agriculture (USDA). The research supports the USDA priority of promoting international food security.

USDA is an equal opportunity provider, employer and lender. To file a complaint of discrimination, write: USDA, Director, Office of Civil Rights, 1400 Independence Ave., S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice), or (202) 720-6382 (TDD).

Dennis O'Brien | Newswise Science News
Further information:
http://www.ars.usda.gov

More articles from Agricultural and Forestry Science:

nachricht New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign

nachricht Fighting a destructive crop disease with mathematics
21.06.2017 | University of Cambridge

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: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Study shines light on brain cells that coordinate movement

26.06.2017 | Life Sciences

Smooth propagation of spin waves using gold

26.06.2017 | Physics and Astronomy

Switchable DNA mini-machines store information

26.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>