scholarly journals In vitro antibacterial effect of exotic plants essential oils on the honeybee pathogen Paenibacillus larvae, causal agent of American foulbrood

2010 ◽  
Vol 8 (3) ◽  
pp. 651 ◽  
Author(s):  
S. R. Fuselli ◽  
B. García de la Rosa ◽  
M. J. Eguaras ◽  
R. Fritz
Keyword(s):  
Essential Oils ◽  
Antibacterial Effect ◽  
Exotic Plants ◽  
Causal Agent ◽  
Paenibacillus Larvae ◽  
American Foulbrood

scholarly journals Low-Molecular-Weight Metabolites Secreted by Paenibacillus larvae as Potential Virulence Factors of American Foulbrood

2014 ◽  
Vol 80 (8) ◽  
pp. 2484-2492 ◽  
Author(s):  
Hedwig-Annabell Schild ◽  
Sebastian W. Fuchs ◽  
Helge B. Bode ◽  
Bernd Grünewald
Keyword(s):  
Molecular Weight ◽  
Virulence Factors ◽  
Gene Clusters ◽  
Paenibacillus Larvae ◽  
Economic Losses ◽  
Low Molecular Weight ◽  
American Foulbrood ◽  
Toxic Activity ◽  
Content Type

ABSTRACTThe spore-forming bacteriumPaenibacillus larvaecauses a severe and highly infective bee disease, American foulbrood (AFB). Despite the large economic losses induced by AFB, the virulence factors produced byP. larvaeare as yet unknown. To identify such virulence factors, we experimentally infected young, susceptible larvae of the honeybee,Apis mellifera carnica, with differentP. larvaeisolates. Honeybee larvae were rearedin vitroin 24-well plates in the laboratory after isolation from the brood comb. We identified genotype-specific differences in the etiopathology of AFB between the tested isolates ofP. larvae, which were revealed by differences in the median lethal times. Furthermore, we confirmed that extracts ofP. larvaecultures contain low-molecular-weight compounds, which are toxic to honeybee larvae. Our data indicate thatP. larvaesecretes metabolites into the medium with a potent honeybee toxic activity pointing to a novel pathogenic factor(s) ofP. larvae. Genome mining ofP. larvaesubsp.larvaeBRL-230010 led to the identification of several biosynthesis gene clusters putatively involved in natural product biosynthesis, highlighting the potential ofP. larvaeto produce such compounds.

Evidence for plasmid-mediated tetracycline resistance in Paenibacillus larvae, the causal agent of American Foulbrood (AFB) disease in honeybees

2007 ◽  
Vol 125 (3-4) ◽  
pp. 290-303 ◽  
Author(s):  
Adriana M. Alippi ◽  
Ana C. López ◽  
Francisco J. Reynaldi ◽  
Daniel H. Grasso ◽  
O. Mario Aguilar
Keyword(s):  
Tetracycline Resistance ◽  
Causal Agent ◽  
Paenibacillus Larvae ◽  
American Foulbrood

Antimicrobial Activity of Some Essential Oils AgainstPaenibacillus larvae, the Causal Agent of American Foulbrood Disease

1996 ◽  
Vol 4 (2) ◽  
pp. 9-16 ◽  
Author(s):  
Adriana M. Alippi ◽  
Jorge A. Ringuelet ◽  
Elsa L. Cerimele ◽  
María S. Re ◽  
Cynthia P. Henning
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Causal Agent ◽  
American Foulbrood ◽  
American Foulbrood Disease
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