E-Seminar in "Biological control of brown rot disease of potato"
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"Biological control of brown rot disease of potato"
http://tech.groups.yahoo.com/group/brd-potato
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TITLE: E-Seminar in "Biological control of brown rot disease of potato"
DATE: 15 - 30 May 2008
ONLINE VENUE: http://tech.groups.yahoo.com/group/brd-potato
E-MAIL PARTICIPATION:
send a blank e-mail to:
brd-potato-subscribe @ yahoogroups.com
DISCUSSION PAPER: "Biological control of brown rot disease of potato" by Dr. Zeiad Moussa (Bacterial diseases Research Department, Plant Pathology Institute, Agricultural Research Center, Giza, Egypt).
Available at: http://tech.groups.yahoo.com/group/brd-potato/files/ (316 KB)
SUMMARY
The purpose of this seminar is to explain the biological control concept and brown rot disease of potato and different means of biological control of this disease and other diseases.
The brown rot disease of potato is worldwide disease that causes loss of potato production. This seminar shows the symptoms of this disease in above and under ground parts of potato plants. Also, it indicates the ways of infection. The causal pathogen is a gram-negative bacterium called Ralstonia solanacearum.
This seminar reveals the two strains of this bacterial pathogen, its races, biovars and its classification. The epidemiology of this disease is discussed.
The biological control of this disease is discussed in this seminar. The use of different bio agents (phages actinomycetes, essential oil, basidiomycetes, Organic amendments and plant residues) against R. solanacearum and other plant pathogens is discussed in this seminar.
The internet discussion welcomes participants to join the forum on a very wide range of methods in biological control of the disease. The background paper provides a review of methods through manipulation of the environment, host or use of antagonists, biological substances.
ABOUT THE AUTHOR:
Major Research Experience:
1. Isolation, characterization and identification of bacteriophages.
2. Isolation and identification of bacterial plant pathogens.
3. Isolation, identification and study of actinomycetes.
4. Investigate the effect of oils and plant extracts on bacterial plant pathogens.
5. Investigate the effect of plant straw as bio-fertilizers and anti-microbial agents.
6. Use of the RAPD-PCR technique to fingerprint of bacteria.
7. Study the effect of bio-agent against plant pathogens under greenhouse and field conditions.
8. Study the effect of bio-agent against plant pathogens under greenhouse and field conditions.
9. Use of plant wastes as antimicrobial and fertilizers substances.
Author is a member in many scientific societies.
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Syndicate
In the light of the
By Abdul Waheed KandhroIn the light of the importance of topic I searched this article for my friends please go through on the given below mentioned site and obtained a lot information on this topic.
Six yeast strains isolated from the surface of pear fruits were evaluated for their ability to control post harvest blue mold (caused byPenicillium expense) on Golden Delicious apple fruits. All strains significantly reduced blue mold incidence and severity when applied simultaneously with the pathogen. Cryptococcus infirmo-miniatusstrain YY6 and Cryptococcus laurentiistrain HRA5 were the most effective, and populations in apple wounds increased approximately 1.2 log units within 10 days at 0°C and approximately 1.4 log units in 2 days at 5, 10, or 20°C. Control of blue mold by these two yeasts alone or in combination with a low dose of thiabendazole (15 μg/ml) was tested at 5, 10, and 20°C. Yeasts combined with thiabendazole controlled the disease significantly better at all temperatures (except at 10°C during 1994) than the low dose of thiabendazole alone, and the control was comparable to that achieved using a commercially recommended high dose of thiabendazole (525 μg/ml).C. infirmo-miniatuscontrolled disease incidence better thanC. laurentiiat 5, 10, and 20°C during 1993 and 1994. On sweet cherry. infirmo-miniatusorC. laurentiicombined with a low dose (20 μg/ml) of iprodione controlled brown rot caused byMonilinia fructicolaas did a high dose (1175 μg/ml) of iprodione.
Author Keywords: thiabendazole; iprodione; Penicillium expansum; Monilinia fructicola; Cryptococcus infirmo-miniatus; Cryptococcus laureate
http://www.sciencedirect.com/science
Increased the number of
By waris AliIncreased the number of outbreaks of potato brown rot:
Since 1992 an increased number of outbreaks of potato brown rot, caused by the bacterium Ralstonia (Burkholderia, Pseudomonas) solanacearum race 3, biovar 2, has been reported in several EPPO member countries, including more northern states like Belgium, France, The Netherlands and the UK. The largest outbreak took place in The Netherlands in 1995, mainly through one heavily infected seed-tuber line. The bacterium was found in most infested countries in surface water and in the weed Solanum dulcamara growing along waterways.
The brown rot bacterium has many similarities concerning its biology and epidemiology with some other infectious diseases, e.g. with cholera, and useful comparisons can be made for control strategies. . These strategies are:
(1) responsibility for prevention and control is for the country where the disease occurs; (2) countries where the disease occurs should report outbreaks as soon as possible; (3) early and sure detection and diagnosis of the pathogen are the core of the system; (4) adequate prevention and control measures should be taken after an outbreak; (5) production of healthy seed tubers should be guaranteed and surveys and (laboratory) checks for (latent) infections performed; (6) education of scientific personnel and the public (farmers, traders, advisory service, etc.) is essential. It is foreseen that hygienic measures and avoidance of surface water for irrigation will be key factors in successful control of the disease.
It is very good activity in
By Younes RashadIt is very good activity in this subject.
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