Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles

In host-parasitoid interactions, antagonistic relationship drives parasitoids to vary in virulence in facing different hosts, which makes these systems excellent models for stress-induced evolutionary studies. Venom compositions varied between two strains of Tetrastichus brontispae, Tb-Bl and Tb-On....

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Autores principales: Zhang, Hua-Jian, Lin, Ya-Ping, Li, Hong-Yu, Wang, Rui, Fu, Lang, Jia, Qing-Chen, Hou, You-Ming, Tang, Bao-Zhen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
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Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8036858/
https://www.ncbi.nlm.nih.gov/pubmed/33808261
http://dx.doi.org/10.3390/ijms22073581
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author Zhang, Hua-Jian
Lin, Ya-Ping
Li, Hong-Yu
Wang, Rui
Fu, Lang
Jia, Qing-Chen
Hou, You-Ming
Tang, Bao-Zhen
author_facet Zhang, Hua-Jian
Lin, Ya-Ping
Li, Hong-Yu
Wang, Rui
Fu, Lang
Jia, Qing-Chen
Hou, You-Ming
Tang, Bao-Zhen
author_sort Zhang, Hua-Jian
collection PubMed
description In host-parasitoid interactions, antagonistic relationship drives parasitoids to vary in virulence in facing different hosts, which makes these systems excellent models for stress-induced evolutionary studies. Venom compositions varied between two strains of Tetrastichus brontispae, Tb-Bl and Tb-On. Tb-Bl targets Brontispa longissima pupae as hosts, and Tb-On is a sub-population of Tb-Bl, which has been experimentally adapted to a new host, Octodonta nipae. Aiming to examine variation in parasitoid virulence of the two strains toward two hosts, we used reciprocal injection experiments to compare effect of venom/ovarian fluids from the two strains on cytotoxicity, inhibition of immunity and fat body lysis of the two hosts. We found that Tb-Onvenom was more virulent towards plasmatocyte spreading, granulocyte function and phenoloxidase activity than Tb-Blvenom. Tb-Blovary was able to suppress encapsulation and phagocytosis in both hosts; however, Tb-Onovary inhibition targeted only B. longissima. Our data suggest that the venom undergoes rapid evolution when facing different hosts, and that the wasp has good evolutionary plasticity.
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spelling pubmed-80368582021-04-12 Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles Zhang, Hua-Jian Lin, Ya-Ping Li, Hong-Yu Wang, Rui Fu, Lang Jia, Qing-Chen Hou, You-Ming Tang, Bao-Zhen Int J Mol Sci Article In host-parasitoid interactions, antagonistic relationship drives parasitoids to vary in virulence in facing different hosts, which makes these systems excellent models for stress-induced evolutionary studies. Venom compositions varied between two strains of Tetrastichus brontispae, Tb-Bl and Tb-On. Tb-Bl targets Brontispa longissima pupae as hosts, and Tb-On is a sub-population of Tb-Bl, which has been experimentally adapted to a new host, Octodonta nipae. Aiming to examine variation in parasitoid virulence of the two strains toward two hosts, we used reciprocal injection experiments to compare effect of venom/ovarian fluids from the two strains on cytotoxicity, inhibition of immunity and fat body lysis of the two hosts. We found that Tb-Onvenom was more virulent towards plasmatocyte spreading, granulocyte function and phenoloxidase activity than Tb-Blvenom. Tb-Blovary was able to suppress encapsulation and phagocytosis in both hosts; however, Tb-Onovary inhibition targeted only B. longissima. Our data suggest that the venom undergoes rapid evolution when facing different hosts, and that the wasp has good evolutionary plasticity. MDPI 2021-03-30 /pmc/articles/PMC8036858/ /pubmed/33808261 http://dx.doi.org/10.3390/ijms22073581 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Hua-Jian
Lin, Ya-Ping
Li, Hong-Yu
Wang, Rui
Fu, Lang
Jia, Qing-Chen
Hou, You-Ming
Tang, Bao-Zhen
Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title_full Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title_fullStr Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title_full_unstemmed Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title_short Variation in Parasitoid Virulence of Tetrastichus brontispae during the Targeting of Two Host Beetles
title_sort variation in parasitoid virulence of tetrastichus brontispae during the targeting of two host beetles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8036858/
https://www.ncbi.nlm.nih.gov/pubmed/33808261
http://dx.doi.org/10.3390/ijms22073581
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