Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea)
The innate immunity is the most important defense against pathogen of insects, and the peptidoglycan recognition proteins (PGRPs) play an important role in the processes of immune recognition and initiation of Toll, IMD and other signal pathways. In fig wasps, pollinators and non-pollinators present...
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MDPI AG
2020-09-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/11/9/597 |
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| author | Hong-Xia Hou Meng-Yuan Guo Jin Geng Xian-Qin Wei Da-Wei Huang Jin-Hua Xiao |
| author_facet | Hong-Xia Hou Meng-Yuan Guo Jin Geng Xian-Qin Wei Da-Wei Huang Jin-Hua Xiao |
| author_sort | Hong-Xia Hou |
| collection | DOAJ |
| description | The innate immunity is the most important defense against pathogen of insects, and the peptidoglycan recognition proteins (PGRPs) play an important role in the processes of immune recognition and initiation of Toll, IMD and other signal pathways. In fig wasps, pollinators and non-pollinators present different evolutionary histories and lifestyles, even though both are closely associated with fig syconia, which may indicate their different patterns in the evolution of PGRPs. By manual annotation, we got all the PGRP genes of 12 fig wasp species, containing seven pollinators and five non-pollinators, and investigated their putative different evolutionary patterns. We found that the number of PGRP genes in pollinators was significantly lower than in non-pollinators, and the number of catalytic PGRP presented a declining trend in pollinators. More importantly, PGRP-SA is associated with initiating the Toll pathway, as well as gram-negative bacteria-binding proteins (GNBPs), which were completely lost in pollinators, which led us to speculate that the initiation of Toll pathway was simpler in pollinators than in non-pollinators. We concluded that fig pollinators owned a more streamlined innate immune recognition system than non-pollinators. Our results provide molecular evidence for the adaptive evolution of innate immunity in insects of host specificity. |
| first_indexed | 2024-03-10T16:35:22Z |
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| id | doaj.art-eee57c5b42c5498e8a13920d06540cb0 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T16:35:22Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
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| series | Insects |
| spelling | doaj.art-eee57c5b42c5498e8a13920d06540cb02023-11-20T12:33:11ZengMDPI AGInsects2075-44502020-09-0111959710.3390/insects11090597Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea)Hong-Xia Hou0Meng-Yuan Guo1Jin Geng2Xian-Qin Wei3Da-Wei Huang4Jin-Hua Xiao5Institute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaInstitute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaInstitute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaInstitute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaInstitute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaInstitute of Entomology, College of Life Sciences, Nankai University, Tianjin 300071, ChinaThe innate immunity is the most important defense against pathogen of insects, and the peptidoglycan recognition proteins (PGRPs) play an important role in the processes of immune recognition and initiation of Toll, IMD and other signal pathways. In fig wasps, pollinators and non-pollinators present different evolutionary histories and lifestyles, even though both are closely associated with fig syconia, which may indicate their different patterns in the evolution of PGRPs. By manual annotation, we got all the PGRP genes of 12 fig wasp species, containing seven pollinators and five non-pollinators, and investigated their putative different evolutionary patterns. We found that the number of PGRP genes in pollinators was significantly lower than in non-pollinators, and the number of catalytic PGRP presented a declining trend in pollinators. More importantly, PGRP-SA is associated with initiating the Toll pathway, as well as gram-negative bacteria-binding proteins (GNBPs), which were completely lost in pollinators, which led us to speculate that the initiation of Toll pathway was simpler in pollinators than in non-pollinators. We concluded that fig pollinators owned a more streamlined innate immune recognition system than non-pollinators. Our results provide molecular evidence for the adaptive evolution of innate immunity in insects of host specificity.https://www.mdpi.com/2075-4450/11/9/597PGRPinnate immunityTolladaptive evolutionfig wasp |
| spellingShingle | Hong-Xia Hou Meng-Yuan Guo Jin Geng Xian-Qin Wei Da-Wei Huang Jin-Hua Xiao Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) Insects PGRP innate immunity Toll adaptive evolution fig wasp |
| title | Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) |
| title_full | Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) |
| title_fullStr | Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) |
| title_full_unstemmed | Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) |
| title_short | Genome-Wide Analysis of Peptidoglycan Recognition Protein Genes in Fig Wasps (Hymenoptera, Chalcidoidea) |
| title_sort | genome wide analysis of peptidoglycan recognition protein genes in fig wasps hymenoptera chalcidoidea |
| topic | PGRP innate immunity Toll adaptive evolution fig wasp |
| url | https://www.mdpi.com/2075-4450/11/9/597 |
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