Citrus Huanglongbing (HLB), also known as greening, is one of the most serious citrus plant diseases in the world. Infected trees produce bitter fruits that are green, misshapen, and unsuitable for sale. Once a tree is infected, there is no cure and it typically dies within a few years. Greening has already devastated the Florida citrus industry and poses a threat to California and Texas as well as Australia and the Mediterranean region.
Currently the most effective ways to prevent the spread of HLB are to stop the causal agent (Candidatus Liberibacter asiaticus) using quarantine measures, control the insect that spreads the disease (Asian citrus psyllid), remove the diseased trees, and plant HLB free trees. To this end, early diagnosis of HLB-diseased trees is crucial. Traditionally, diagnosis relies on observing blotchy mottle symptoms and confirming disease presence using molecular tools. However, these symptoms do not show until months after disease transmission and by then the disease has likely already spread throughout the grove.
Professor Nian Wang and his postdoctoral research associate Dr. Sheo Shanker Pandey, both from Citrus Research and Education Center, Department of Microbiology and Cell Science, at the Institute of Food and Agricultural Sciences of University of Florida, developed a strategy for early diagnosis of HLB before the appearance of blotchy mottle symptoms. They used a low-cost staining method to identify insect feeding sites and tested those identified sites for the causal agent using quantitative real-time PCR (polymerase chain reaction).
Through this method, the pair were able to detect the HLB causal agent up to two days after transmission and long before the appearance of symptoms. This early detection will enable citrus growers to prevent the spread of HLB in their fields. This finding is especially crucial for California, Texas, Australia, and the Mediterranean region as those areas are currently plagued by HLB.
More details about this study can be found in “Targeted Early Detection of Citrus Huanglongbing Causal Agent ‘Candidatus Liberibacter asiaticus’ Before Symptom Expression” in Phytopathology Volume 109, Number 6, published June 2019. Phytopathology is an international journal publishing articles on fundamental research that advances understanding of the nature of plant diseases, the agents that cause them, their spread, the losses they cause, and measures used to control them.
The Latest on: Citrus greening
via Google News
The Latest on: Citrus greening
- Florida citrus production faces sour predictions for 2020-21 seasonon April 10, 2021 at 8:37 am
requesting this year from legislators $8 million for citrus greening research and over $6 million for citrus health response and pest eradication, and I’m encouraged by new research advances ...
- Plenty of ways to get a kumquat fix at this festivalon April 6, 2021 at 10:15 am
Citrus greening had an impact on the crop this year, he said. ‘Only 60 bushels made it to the Kumquat Festival this year. That’s roughly 3,000 pounds.’ Brock Smith was 7 years old when he began ...
- RTP agtech startup looks to spread the word about its newly patented crop protectionon April 6, 2021 at 4:45 am
Innatrix is already training next-generation scientists, including STEM internships, on how to protect crops using its newly patented platform. Here are the details.
- Pesticide Producer Asks to Intervene in Lawsuit Contesting Registration of Aldicarb for Citruson April 5, 2021 at 1:50 pm
AgLogic Chemical LLC, which produces the pesticide aldicarb, asked to intervene in favor of the Environmental Protection Agency (EPA) in the ...
- Citrus Oils Market Recent Industry Developments and Growth Strategies Adopted by Playerson April 5, 2021 at 9:16 am
In order to preserve citrus oil products, manufacturers use synthetic chemicals extensively, moreover, risk of citrus greening disease from impure citrus products in expected to pose challenges to the ...
- Brazil and US scientists discover molecule that has destroyed millions of citrus groveson April 3, 2021 at 10:55 am
Citrus greening, or Candidatus Liberibacter asiaticus, is incurable and one of the most serious citrus plant diseases in the world, according to the United States Department of Agriculture.
- Packer Techon April 2, 2021 at 1:39 am
Chicago-based Hazel Technologies Miami-based WP Produce report strong growth in the volume of Dominican Republic tropical avocados treated with the technology. Apeel has announced an expanded ...
- Lawsuit challenges EPA approval of antibiotic as pesticide on citrus cropson March 30, 2021 at 3:32 am
on citrus trees to prevent or treat citrus greening disease and citrus canker. The group consisting of farmworkers, health-justice and conservation organizations, stated in a press release that the ...
- Florida growers confronted with Citrus Greeningon March 23, 2021 at 7:33 am
DeSoto County’s citrus producers are struggling more with Citrus Greening this growing season than with the Covid situation. While the pandemic has slammed the US economy, its fiscal ...
- Florida researchers discover new way to potentially control citrus greeningon March 17, 2021 at 4:36 pm
Researchers at the University of Florida say they discovered another key resource in their ongoing pursuit to find solutions to fight Huanglongbing (HLB), or citrus greening disease. The ...
via Bing News