HISTOPATHOLOGICAL AND HISTOCHEMICAL CHANGES IN HONEYBEE LARVAE (APIS MELLIFERAL.) AFTER INFECTION WITHBACILLUS LARVAE, THE CAUSATIVE AGENT OF AMERICAN FOULBROOD DISEASE

1998 ◽  
Vol 22 (2) ◽  
pp. 137-144 ◽  
Author(s):  
A GREGORC
2018 ◽  
Vol 7 (12) ◽  
Author(s):  
Diane G. Yost ◽  
Carolyn Chang ◽  
Lucy LeBlanc ◽  
Erin Cassin ◽  
Ceara Peterman ◽  
...  

We present the complete genome sequences of four phages that infect Paenibacillus larvae, the causative agent of American foulbrood disease in honeybees. The phages were isolated from beehives and beeswax products from Las Vegas, Nevada.


2019 ◽  
Vol 43 (25) ◽  
pp. 10109-10117 ◽  
Author(s):  
Diego Rodríguez-Hernández ◽  
Weilan G. P. Melo ◽  
Carla Menegatti ◽  
Vitor B. Lourenzon ◽  
Fábio S. do Nascimento ◽  
...  

Strong activity against the bacteria Paenibacillus larvae ATCC9545, the causative agent of the American Foulbrood disease of honey bees.


2015 ◽  
Vol 3 (5) ◽  
Author(s):  
Philippos K. Tsourkas ◽  
Diane G. Yost ◽  
Andrew Krohn ◽  
Lucy LeBlanc ◽  
Anna Zhang ◽  
...  

We present here the complete genome sequences of nine phages that infect Paenibacillus larvae , the causative agent of American foulbrood disease in honeybees. The phages were isolated from soil, propolis, and infected bees from three U.S. states. This is the largest number of P. larvae phage genomes sequenced in a single publication to date.


2017 ◽  
Vol 37 (03) ◽  
pp. 137-148 ◽  
Author(s):  
Mohammad Javed Ansari ◽  
Ahmad Al-Ghamdi ◽  
Adgaba Nuru ◽  
Ashraf Mohamed Ahmed ◽  
Tahany H. Ayaad ◽  
...  

AbstractApis mellifera jemenitica, the only indigenous honey bee race of Saudi Arabia, is well adapted to the harsh local environmental conditions. A large-scale field survey was conducted to screen major Saudi Arabian beekeeping locations for infection byPaenibacillus larvae. Paenibacillus larvaeis one of the major bacterial pathogens of honey bee broods and is the causative agent of American foulbrood disease. Larvae from samples suspected of infection were collected from different apiaries and homogenized in phosphate-buffered saline. Bacteria were isolated on MYPGP agar medium. Two bacterial isolates, ksuPL3 and ksuPL5 (16S rRNA GenBank accession numbers, KR780760 and KR780761, respectively), were subjected to molecular identification usingP. larvae-specific primers. A BLAST sequence analysis revealed that the two isolates wereP. larvaewith more than 98% sequence identity. This detection ofP. larvaein the indigenous honey bee is the first recorded incidence of this pathogen in Saudi Arabia. This study emphasizes the need for the relevant authorities to take immediate steps towards treating and limiting the spread of this disease throughout the country.


2005 ◽  
Vol 71 (11) ◽  
pp. 7551-7555 ◽  
Author(s):  
Elke Genersch ◽  
Ainura Ashiralieva ◽  
Ingemar Fries

ABSTRACT Virulence variations of Paenibacillus larvae subsp. larvae, the causative agent of American foulbrood disease of honeybees, were investigated by analysis of 16 field isolates of this pathogen, belonging to three previously characterized genotypes, as well as the type strain (ATCC 9545) of P. larvae subsp. larvae, with exposure bioassays. We demonstrated that the strain-specific 50% lethal concentrations varied within an order of magnitude and that differences in amount of time for the pathogen to kill 100% of the infected hosts (LT100) correlated with genotype. One genotype killed rather quickly, with a mean LT100 of 7.8 ± 1.7 days postinfection, while the other genotypes acted more slowly, with mean LT100s of 11.2 ± 0.8 and 11.6 ± 0.6 days postinfection.


2015 ◽  
Vol 15 (1) ◽  
pp. 84 ◽  
Author(s):  
Sara Ghorbani-Nezami ◽  
Lucy LeBlanc ◽  
Diane G. Yost ◽  
Penny S. Amy

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