Featured Research

from universities, journals, and other organizations

Periwinkle plants provide ammunition in the war on citrus greening

Date:
April 27, 2010
Source:
USDA/Agricultural Research Service
Summary:
Scientists 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, also known as citrus greening.
Credit: Photo courtesy of National Park Service

A team of scientists from the Agricultural Research Service (ARS) and the University of Florida Indian River Research and Education Center 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 the University of Florida Indian River Research and Education Center.

The researchers used HLB-infected lemon trees to infect periwinkle plants by way of dodder 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.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Journal Reference:

  1. Muqing Zhang, Yongping Duan, Lijuan Zhou, William W. Turechek, Ed Stover, Charles A. Powell. Screening Molecules for Control of Citrus Huanglongbing Using an Optimized Regeneration System for 'Candidatus Liberibacter asiaticus'-Infected Periwinkle (Catharanthus roseus) Cuttings. Phytopathology, 2010; 100 (3): 239 DOI: 10.1094/PHYTO-100-3-0239

Cite This Page:

USDA/Agricultural Research Service. "Periwinkle plants provide ammunition in the war on citrus greening." ScienceDaily. ScienceDaily, 27 April 2010. <www.sciencedaily.com/releases/2010/04/100426105641.htm>.
USDA/Agricultural Research Service. (2010, April 27). Periwinkle plants provide ammunition in the war on citrus greening. ScienceDaily. Retrieved September 21, 2014 from www.sciencedaily.com/releases/2010/04/100426105641.htm
USDA/Agricultural Research Service. "Periwinkle plants provide ammunition in the war on citrus greening." ScienceDaily. www.sciencedaily.com/releases/2010/04/100426105641.htm (accessed September 21, 2014).

Share This



More Plants & Animals News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
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