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Tang C, Hu X, Tang J, Wang L, Liu X, Peng Y, Xia Y, Xie J. The symbiont Acinetobacter baumannii enhances the insect host resistance to entomopathogenic fungus Metarhizium anisopliae. Commun Biol 2024; 7:1184. [PMID: 39300313 DOI: 10.1038/s42003-024-06779-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 08/22/2024] [Indexed: 09/22/2024] Open
Abstract
Major symbiotic organisms have evolved to establish beneficial relationships with hosts. However, understanding the interactions between symbionts and insect hosts, particularly for their roles in defense against pathogens, is still limited. In a previous study, we proposed that the fungus Metarhizium anisopliae can infect the brown planthopper Nilaparvata lugens, a harmful pest for rice crops. To expand on this, we investigated changes in N. lugens' intestinal commensal community after M. anisopliae infection and identified key gut microbiotas involved. Our results showed significant alterations in gut microbiota abundance and composition at different time points following infection with M. anisopliae. Notably, certain symbionts, like Acinetobacter baumannii, exhibited significant variations in response to the fungal infection. The decrease in these symbionts had a considerable impact on the insect host's survival. Interestingly, reintroducing A. baumannii enhanced the host's resistance to M. anisopliae, emphasizing its role in pathogen defense. Additionally, A. baumannii stimulated host immune responses, as evidenced by increased expression of immune genes after reintroduction. Overall, our findings highlight the significance of preserving a stable gut microbial community for the survival of insects. In specific conditions, the symbiotic microorganism A. baumannii can enhance the host's ability to resist entomopathogenic pathogens through immune regulation.
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Affiliation(s)
- Cui Tang
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China
| | - Xiao Hu
- Wuhan Kernel Bio-tech Co. Ltd, Guannanyuan Road No.17, Guannan Industrial Park, Wuhan, 430074, China
| | - Jifeng Tang
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China
| | - Lei Wang
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China
| | - Xuewei Liu
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China
| | - Yifan Peng
- Wuhan Kernel Bio-tech Co. Ltd, Guannanyuan Road No.17, Guannan Industrial Park, Wuhan, 430074, China
| | - Yuxian Xia
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China.
- National Engineering Research Center of Microbial Pesticides (Joint institute-Chongqing University), Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, 405200, China.
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Chongqing, 405200, China.
| | - Jiaqin Xie
- School of Life Sciences, Genetic Engineering Research Center, Chongqing University, Chongqing, 405200, China.
- National Engineering Research Center of Microbial Pesticides (Joint institute-Chongqing University), Chongqing Engineering Research Center for Fungal Insecticides, Chongqing, 405200, China.
- Key Laboratory of Gene Function and Regulation Technology under Chongqing Municipal Education Commission, Chongqing, 405200, China.
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Su C, Xie T, Jiang L, Wang Y, Wang Y, Nie R, Zhao Y, He B, Ma J, Yang Q, Hao J. Host genetics and larval host plant modulate microbiome structure and evolution underlying the intimate insect-microbe-plant interactions in Parnassius species on the Qinghai-Tibet Plateau. Ecol Evol 2024; 14:e11218. [PMID: 38606343 PMCID: PMC11007261 DOI: 10.1002/ece3.11218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/09/2024] [Accepted: 03/20/2024] [Indexed: 04/13/2024] Open
Abstract
Insects harbor a remarkable diversity of gut microbiomes critical for host survival, health, and fitness, but the mechanism of this structured symbiotic community remains poorly known, especially for the insect group consisting of many closely related species that inhabit the Qinghai-Tibet Plateau. Here, we firstly analyzed population-level 16S rRNA microbial dataset, comprising 11 Parnassius species covering 5 subgenera, from 14 populations mostly sampled in mountainous regions across northwestern-to-southeastern China, and meanwhile clarified the relative importance of multiple factors on gut microbial community structure and evolution. Our findings indicated that both host genetics and larval host plant modulated gut microbial diversity and community structure. Moreover, the effect analysis of host genetics and larval diet on gut microbiomes showed that host genetics played a critical role in governing the gut microbial beta diversity and the symbiotic community structure, while larval host plant remarkably influenced the functional evolution of gut microbiomes. These findings of the intimate insect-microbe-plant interactions jointly provide some new insights into the correlation among the host genetic background, larval host plant, the structure and evolution of gut microbiome, as well as the mechanisms of high-altitude adaptation in closely related species of this alpine butterfly group.
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Affiliation(s)
- Chengyong Su
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Tingting Xie
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Lijun Jiang
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Yunliang Wang
- College of Life SciencesAnhui Normal UniversityWuhuChina
- College of Physical EducationAnhui Normal UniversityWuhuChina
| | - Ying Wang
- College of Life SciencesAnhui Normal UniversityWuhuChina
- College of Physical EducationAnhui Normal UniversityWuhuChina
| | - Ruie Nie
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Youjie Zhao
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Bo He
- College of Life SciencesAnhui Normal UniversityWuhuChina
| | - Junye Ma
- Key Laboratory of Palaeobiology and Petroleum Stratigraphy, Center for Excellence in Life and Palaeoenvironment, Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjingChina
| | - Qun Yang
- Key Laboratory of Palaeobiology and Petroleum Stratigraphy, Center for Excellence in Life and Palaeoenvironment, Nanjing Institute of Geology and PaleontologyChinese Academy of SciencesNanjingChina
- Nanjing CollegeUniversity of Chinese Academy of SciencesNanjingChina
| | - Jiasheng Hao
- College of Life SciencesAnhui Normal UniversityWuhuChina
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Zhang L, Wang F, Wu J, Ye S, Xu Y, Liu Y. Fine-Scale Genetic Structure of Curculio chinensis (Coleoptera: Curculionidae) Based on Mitochondrial COI: The Role of Host Specificity and Spatial Distance. INSECTS 2024; 15:116. [PMID: 38392535 PMCID: PMC10888635 DOI: 10.3390/insects15020116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/30/2024] [Accepted: 02/04/2024] [Indexed: 02/24/2024]
Abstract
The Camellia weevil, Curculio chinensis (Chevrolat, 1978), is a dominant oligophagous pest that bores into the fruit of oil-tea Camellia. Genetic differentiation among populations in various hosts can easily occur, which hinders research on pest management. In this study, the genetic structure, genetic diversity, and phylogenetic structure of local C. chinensis populations were examined using 147 individuals (from 6 localities in Jiangxi), based on 2 mitochondrial COI markers. Results indicated that the C. chinensis population in Jiangxi exhibits a high haplotype diversity, especially for the populations from Cam. meiocarpa plantations. Structural differentiation was observed between Haplogroup 1 (73 individuals from Ganzhou, Jian, and Pingxiang) in the monoculture plantations of Cam. meiocarpa and Haplogroup 2 (75 individuals from Pingxiang and Jiujiang) in Cam. oleifera. Two haplogroups have recently undergone a demographic expansion, and Haplogroup 1 has shown a higher number of effective migrants than Haplogroup 2. This suggests that C. chinensis has been spreading from Cam. meiocarpa plantations to other oil-tea Camellia, such as Cam. oleifera. The increased cultivation of oil-tea Camellia in Jiangxi has contributed to a unique genetic structure within the C. chinensis population. This has, in turn, expanded the distribution of C. chinensis and increased migration between populations.
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Affiliation(s)
- Li Zhang
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang 332005, China
| | - Fuping Wang
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang 332005, China
| | - Jiaxi Wu
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang 332005, China
| | - Sicheng Ye
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang 332005, China
| | - Ye Xu
- School of Agricultural Science, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yanan Liu
- Institute of Jiangxi Oil-Tea Camellia, Jiujiang University, Jiujiang 332005, China
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