Leptopilina heterotoma and L. boulardi: strategies to avoid cellular defense responses of Drosophila melanogaster

Experimental Parasitology
T M RizkiY Carton

Abstract

Eggs of three strains of the cynipid parasitoid Leptopilina heterotoma and a Tunisian strain (G317) of L. boulardi are not encapsulated by hemocytes of Drosophila melanogaster hosts, but the eggs of a Congolese strain (L104) of L. boulardi are encapsulated. To determine the reason for the difference in host response against the parasitoid eggs, lamellocytes (hemocytes that encapsulate foreign objects and form capsules around endogenous tissues in melanotic tumor mutants) were examined in host larvae parasitized by the five Leptopilina strains. Parasitization by the three L. heterotoma strains affected the morphology of host lamellocytes and suppressed endogenous melanotic capsule formation in melanotic tumor hosts. L104 did not alter the morphology of host lamellocytes nor block tumor formation in melanotic tumor mutant hosts. The morphology of some lamellocytes was affected by G317 parasitization but host lamellocytes were still capable of forming melanotic tumors and encapsulating dead supernumerary parasitoid larvae. Therefore, the eggs of strains affecting lamellocyte morphology are protected from encapsulation by the host's blood cells. L. heterotoma eggs float freely in the host hemocoel but L. boulardi eggs are attached ...Continue Reading

References

Jan 1, 1979·Differentiation; Research in Biological Diversity·R M Rizki, T M Rizki
Oct 1, 1984·Proceedings of the National Academy of Sciences of the United States of America·R M Rizki, T M Rizki
Jan 1, 1984·Genetics, Selection, Evolution : GSE·Y Carton, F Frey

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Citations

Mar 1, 1992·Developmental and Comparative Immunology·T M Rizki, R M Rizki
May 1, 1996·Developmental and Comparative Immunology·E NicolasB Lemaitre
Nov 1, 1990·Proceedings of the National Academy of Sciences of the United States of America·R M Rizki, T M Rizki
Apr 15, 1994·Annals of the New York Academy of Sciences·T M Rizki, R M Rizki
Jan 5, 2007·Annual Review of Immunology·Bruno Lemaitre, Jules Hoffmann
May 30, 2013·PloS One·Jeremy GoecksTodd A Schlenke
May 22, 2013·Proceedings of the National Academy of Sciences of the United States of America·Nathan T MortimerTodd A Schlenke
Mar 29, 2014·Scandinavian Journal of Immunology·H Myllymäki, M Rämet
Dec 7, 2007·Current Biology : CB·Richard Y HwangW Daniel Tracey
Dec 7, 2007·Developmental and Comparative Immunology·Aurore DubuffetMarylène Poirié
Jun 9, 2020·Frontiers in Cell and Developmental Biology·Fangzhou LuoLi Hua Jin
Aug 1, 1999·Evolution; International Journal of Organic Evolution·M D E FellowesH C J Godfray
Jan 26, 2021·Journal of Cellular Physiology·Dushyant Kumar GautamIndira Paddibhatla

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