Detailed Information on Publication Record
2011
Nematode infections are affected by insect clotting system
HYRŠL, Pavel, Pavel DOBEŠ, Zhi WANG and Ulrich THEOPOLDBasic information
Original name
Nematode infections are affected by insect clotting system
Name in Czech
Nematode infections are affected by insect clotting system
Authors
HYRŠL, Pavel (203 Czech Republic, guarantor, belonging to the institution), Pavel DOBEŠ (203 Czech Republic, belonging to the institution), Zhi WANG (156 China) and Ulrich THEOPOLD (752 Sweden)
Edition
13th European Meeting IOBC/WPRS "Biological Control in IPM Systems" 2011
Other information
Language
English
Type of outcome
Konferenční abstrakt
Field of Study
30105 Physiology
Country of publisher
Austria
Confidentiality degree
není předmětem státního či obchodního tajemství
RIV identification code
RIV/00216224:14310/11:00049861
Organization unit
Faculty of Science
ISBN
978-92-9067-241-8
Keywords (in Czech)
Drosophila; entomopathogenic nematodes; insect immunity
Keywords in English
Drosophila; entomopathogenic nematodes; insect immunity
Tags
International impact
Změněno: 9/3/2012 08:42, doc. RNDr. Pavel Hyršl, Ph.D.
V originále
Entomopathogenic nematodes (EPN’s) of the genera Heterorhabditis are obligate and lethal insect parasites. In recent years they have been used increasingly as biological control agents. Infective juveniles occur free living in the soil and are capable of seeking out hosts and penetrate them through the cuticle or natural orifices. EPN’s are symbiotically associated with bacteria of the genera Photorhabdus. The bacterial symbionts are essential to kill the host (within 24-48 hours) and digest host tissues. Drosophila larvae are more resistant to nematode infection than Galleria mellonella, but both can be used as natural infection model. The tripartite model (Drosophila, nematodes, bacteria) was recently established and used to show an immune function for transglutaminase, a conserved clotting factor. In this study we used different Drosophila mutants or RNAi lines with defects in clotting or other branches of the immune system. We demonstrated an immune function during nematode infection for known clotting substrates GP150 and Fondue, while Toll an Imd immune pathways are not activated during nematode infection. Phenoloxidase cascade also cooperates with clotting, but is not efficient again nematodes itself. In conclusion, we show that the Heterorhabditis/Photorhabdus infection model is suitable to identify novel regulators of innate immunity and we bring evidence of coagulation immune function in insects against nematode infection. Our research is supported by grants from Grant Agency of Czech Republic (GA206/09/P470).
In Czech
Entomopathogenic nematodes (EPN’s) of the genera Heterorhabditis are obligate and lethal insect parasites. In recent years they have been used increasingly as biological control agents. Infective juveniles occur free living in the soil and are capable of seeking out hosts and penetrate them through the cuticle or natural orifices. EPN’s are symbiotically associated with bacteria of the genera Photorhabdus. The bacterial symbionts are essential to kill the host (within 24-48 hours) and digest host tissues. Drosophila larvae are more resistant to nematode infection than Galleria mellonella, but both can be used as natural infection model. The tripartite model (Drosophila, nematodes, bacteria) was recently established and used to show an immune function for transglutaminase, a conserved clotting factor. In this study we used different Drosophila mutants or RNAi lines with defects in clotting or other branches of the immune system. We demonstrated an immune function during nematode infection for known clotting substrates GP150 and Fondue, while Toll an Imd immune pathways are not activated during nematode infection. Phenoloxidase cascade also cooperates with clotting, but is not efficient again nematodes itself. In conclusion, we show that the Heterorhabditis/Photorhabdus infection model is suitable to identify novel regulators of innate immunity and we bring evidence of coagulation immune function in insects against nematode infection. Our research is supported by grants from Grant Agency of Czech Republic (GA206/09/P470).
Links
| GP206/09/P470, research and development project |
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