1
|
Cheng Z, Liu Q, Huang X. Partial Correspondence between Host Plant-Related Differentiation and Symbiotic Bacterial Community in a Polyphagous Insect. Animals (Basel) 2024; 14:283. [PMID: 38254452 PMCID: PMC10812459 DOI: 10.3390/ani14020283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/15/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Host plants play a vital role in insect population differentiation, while symbiotic associations between bacteria and insects are ubiquitous in nature. However, existing studies have given limited attention to the connection between host-related differentiation and symbiotic bacterial communities in phytophagous insects. In this study, we collected 58 samples of Aphis odinae from different host plants in southern China and constructed phylogenetic trees to investigate their differentiation in relation to host plants. We also selected aphid samples from the five most preferred host plants and analyzed their symbiotic bacterial composition using Illumina sequencing of the V3-V4 hypervariable region of the 16S rRNA gene. The phylogeny and symbiotic bacterial community structure of A. odinae populations on different host plants showed that samples from Triadica sebifera (Euphorbiaceae) had a consistent presence of Wolbachia as the predominant secondary symbiont and suggested the possibility of undergoing differentiation. Conversely, although differentiation was observed in samples from Rhus chinensis (Anacardiaceae), no consistent presence of predominant secondary symbionts was found. Additionally, the samples from Heptapleurum heptaphyllum (Araliaceae) consistently carried Serratia, but no host differentiation was evident. In summary, this study reveals a partial correspondence between symbiotic bacterial communities and host-related differentiation in A. odinae. The findings contribute to our understanding of the microevolutionary influencing the macroevolutionary relationships between bacterial symbionts and phytophagous insects. The identification of specific symbionts associated with host-related differentiation provides valuable insights into the intricate dynamics of insect-bacteria interactions.
Collapse
Affiliation(s)
| | | | - Xiaolei Huang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.C.); (Q.L.)
| |
Collapse
|
2
|
Renoz F. The nutritional dimension of facultative bacterial symbiosis in aphids: Current status and methodological considerations for future research. CURRENT RESEARCH IN INSECT SCIENCE 2023; 5:100070. [PMID: 38222793 PMCID: PMC10787254 DOI: 10.1016/j.cris.2023.100070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/22/2023] [Accepted: 12/11/2023] [Indexed: 01/16/2024]
Abstract
Aphids are valuable models for studying the functional diversity of bacterial symbiosis in insects. In addition to their ancestral obligate nutritional symbiont Buchnera aphidicola, these insects can host a myriad of so-called facultative symbionts. The diversity of these heritable bacterial associates is now well known, and some of the ecologically important traits associated with them have been well documented. Some twenty years ago, it was suggested that facultative symbionts could play an important role in aphid nutrition, notably by improving feeding performance on specific host plants, thus influencing the adaptation of these insects to host plants. However, the underlying mechanisms have never been elucidated, and the nutritional role that facultative symbionts might perform in aphids remains enigmatic. In this opinion piece, I put forward a series of arguments in support of the hypothesis that facultative symbionts play a central role in aphid nutrition and emphasize methodological considerations for testing this hypothesis in future work. In particular, I hypothesize that the metabolic capacities of B. aphidicola alone may not always be able to counterbalance the nutritional deficiencies of phloem sap. The association with one or several facultative symbionts with extensive metabolic capabilities would then be necessary to buffer the insect from host plant-derived nutrient deficiencies, thus enabling it to gain access to certain host plants.
Collapse
Affiliation(s)
- François Renoz
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8634, Japan
- Biodiversity Research Centre, Earth and Life Institute, UCLouvain, Croix du Sud 4-5, 1348, Louvain-la-Neuve, Belgium
| |
Collapse
|
3
|
Zytynska SE, Sturm S, Hawes C, Weisser WW, Karley A. Floral presence and flower identity alter cereal aphid endosymbiont communities on adjacent crops. J Appl Ecol 2023; 60:1409-1423. [PMID: 38601947 PMCID: PMC11005096 DOI: 10.1111/1365-2664.14426] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 04/18/2023] [Indexed: 04/12/2024]
Abstract
Floral plantings adjacent to crops fields can recruit populations of natural enemies by providing flower nectar and non-crop prey to increase natural pest regulation. Observed variation in success rates might be due to changes in the unseen community of endosymbionts hosted by many herbivorous insects, of which some can confer resistance to natural enemies, for example, parasitoid wasps. Reduced insect control may occur if highly protective symbiont combinations increase in frequency via selection effects, and this is expected to be stronger in lower diversity systems.We used a large-scale field trial to analyse the bacterial endosymbiont communities hosted by cereal aphids Sitobion avenae collected along transects into strip plots of barley plants managed by either conventional or integrated (including floral field margins and reduced inputs) methods. In addition, we conducted an outdoor pot experiment to analyse endosymbionts in S. avenae aphids collected on barley plants that were either grown alone or alongside one of three flowering plants, across three time points.In the field, aphids hosted up to four symbionts. The abundance of aphids and parasitoid wasps was reduced towards the middle of all fields while aphid symbiont species richness and diversity decreased into the field in conventional, but not integrated, field-strips. The proportion of aphids hosting different symbiont combinations varied across cropping systems, with distances into the fields, and were correlated with parasitoid wasp abundances.In the pot experiment, aphids hosted up to six symbionts. Flower presence increased natural enemy abundance and diversity, and decreased aphid abundance. The proportion of aphids hosting different symbiont combinations varied across the flower treatment and time, and were correlated with varying abundances of the different specialist parasitoid wasp species recruited by different flowers. Synthesis and applications. Floral plantings and flower identity had community-wide impacts on the combinations of bacterial endosymbionts hosted by herbivorous insects, which correlated with natural enemy diversity and abundance. We recommend that integrated management practices incorporate floral resources within field areas to support a more functionally diverse and resilient natural enemy community to mitigate selection for symbiont-mediated pest resistance throughout the cropping area.
Collapse
Affiliation(s)
- Sharon E. Zytynska
- Department of Evolution, Ecology, and Behaviour, Institute of Infection, Veterinary and Ecological SciencesUniversity of LiverpoolLiverpoolUK
- Terrestrial Ecology Research Group, Department of Life Science Systems, School of Life SciencesTechnical University of MunichFreisingGermany
| | - Sarah Sturm
- Terrestrial Ecology Research Group, Department of Life Science Systems, School of Life SciencesTechnical University of MunichFreisingGermany
| | - Cathy Hawes
- Ecological Sciences DepartmentThe James Hutton InstituteDundeeUK
| | - Wolfgang W. Weisser
- Terrestrial Ecology Research Group, Department of Life Science Systems, School of Life SciencesTechnical University of MunichFreisingGermany
| | - Alison Karley
- Ecological Sciences DepartmentThe James Hutton InstituteDundeeUK
| |
Collapse
|
4
|
Tougeron K, Iltis C, Rampnoux E, Goerlinger A, Dhondt L, Hance T. Still standing: The heat protection delivered by a facultative symbiont to its aphid host is resilient to repeated thermal stress. CURRENT RESEARCH IN INSECT SCIENCE 2023; 3:100061. [PMID: 37304568 PMCID: PMC10250925 DOI: 10.1016/j.cris.2023.100061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 04/05/2023] [Accepted: 05/29/2023] [Indexed: 06/13/2023]
Abstract
Insects have evolved diverse strategies to resist extreme high temperatures (EHT). The adaptive value of such strategies has to be evaluated when organisms experience multiple EHT events during their lifetime, as predicted in a changing climate. This is particularly the case for associations with facultative microbial partners involved in insect heat tolerance, the resilience of which to repeated heat stress has never been studied. We compared two artificial lines of the pea aphid (Acyrthosiphon pisum) differing by the absence or presence of the heat-protective facultative bacterium Serratia symbiotica. We exposed insect nymphs to a varying number of EHT events (between 0 and 3), and recorded fitness parameters. Except survival traits, fitness estimates were affected by the interaction between aphid infection status (absence/presence of S. symbiotica) and thermal treatment (number of heat shocks applied). Costs of bacterial infection were detected in the absence of thermal stress: symbiont-hosting aphids incurred longer development, decreased fecundity and body size. However, symbiotic infection turned neutral, and even beneficial for some traits (development and body size), as the number of heat shocks increased, and compared to the aposymbiotic strain. Conversely, symbiotic infection mediated aphid response to heat shock(s): fitness decreased only in the uninfected group. These findings suggest that (i) the facultative symbiont may alternatively act as a pathogen, commensal or mutualist depending on thermal environment, and (ii) the heat protection it delivered to its host persists under frequent EHT. We discuss eco-evolutionary implications and the role of potentially confounding factors (stage-specific effects, genetic polymorphism displayed by the obligate symbiont).
Collapse
Affiliation(s)
- Kévin Tougeron
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
- Institut de Recherche en Biosciences, Université de Mons, Av. du Champ de Mars 6, 7000 Mons, Belgium
| | - Corentin Iltis
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
| | - Eliott Rampnoux
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
| | - Alexandre Goerlinger
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
| | - Linda Dhondt
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
| | - Thierry Hance
- Earth and Life Institute, Ecology and Biodiversity, Université catholique de Louvain, Croix du Sud 4-5, 1348 Louvain-la-Neuve, Belgium
| |
Collapse
|
5
|
Frago E, Zytynska S. Impact of herbivore symbionts on parasitoid foraging behaviour. CURRENT OPINION IN INSECT SCIENCE 2023; 57:101027. [PMID: 36990151 DOI: 10.1016/j.cois.2023.101027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Parasitoids are insects that lay eggs in other insects, but before this, they have the remarkable task of locating and successfully attacking a suitable individual. Once an egg is laid, many herbivorous hosts carry defensive symbionts that prevent parasitoid development. Some symbioses can act ahead of these defences by reducing parasitoid foraging efficiency, while others may betray their hosts by producing chemical cues that attract parasitoids. In this review, we provide examples of symbionts altering the different steps that adult parasitoids need to take to achieve egg laying. We also discuss how interactions between habitat complexity, plants and herbivores modulate the way symbionts affect parasitoid foraging, and parasitoid evaluation of patch quality based on risk cues derived from parasitoid antagonists such as competing parasitoids and predators.
Collapse
Affiliation(s)
- Enric Frago
- CIRAD, UMR CBGP, INRAE, Institut Agro, IRD, Université Montpellier, F-34398 Montpellier, France.
| | - Sharon Zytynska
- Department of Evolution, Ecology and Behaviour, Institute of Infection, Veterinary & Ecological Sciences, University of Liverpool, Liverpool, UK
| |
Collapse
|
6
|
Yu W, Bosquée E, Fan J, Liu Y, Bragard C, Francis F, Chen J. Proteomic and Transcriptomic Analysis for Identification of Endosymbiotic Bacteria Associated with BYDV Transmission Efficiency by Sitobion miscanthi. PLANTS (BASEL, SWITZERLAND) 2022; 11:3352. [PMID: 36501390 PMCID: PMC9735544 DOI: 10.3390/plants11233352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Sitobion miscanthi, an important viral vector of barley yellow dwarf virus (BYDV), is also symbiotically associated with endosymbionts, but little is known about the interactions between endosymbionts, aphid and BYDV. Therefore, two aphids' geographic populations, differing in their BYDV transmission efficiency, after characterizing their endosymbionts, were treated with antibiotics to investigate how changes in the composition of their endosymbiont population affected BYDV transmission efficiency. After antibiotic treatment, Rickettsia was eliminated from two geographic populations. BYDV transmission efficiency by STY geographic population dropped significantly, by -44.2% with ampicillin and -25.01% with rifampicin, but HDZ geographic population decreased by only 14.19% with ampicillin and 23.88% with rifampicin. Transcriptomic analysis showed that the number of DEGs related to the immune system, carbohydrate metabolism and lipid metabolism did increase in the STY rifampicin treatment, while replication and repair, glycan biosynthesis and metabolism increased in the STY ampicillin treatment. Proteomic analysis showed that the abundance of symbionin symL, nascent polypeptide-associated complex subunit alpha and proteasome differed significantly between the two geographic populations. We found that the endosymbionts can mediate vector viral transmission. They should therefore be included in investigations into aphid-virus interactions and plant disease epidemiology. Our findings should also help with the development of strategies to prevent virus transmission.
Collapse
Affiliation(s)
- Wenjuan Yu
- MOA Key Laboratory of Integrated Management of Pests on Crops in Southwest China, Institute of Plant Protection, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030 Gembloux, Belgium
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Emilie Bosquée
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Jia Fan
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yong Liu
- College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
| | - Claude Bragard
- Applied Microbiologye-Phytopathology, Earth and Life Institute, UCLouvain, Croix du Sud L7.05.03, 1348 Louvain-la-Neuve, Belgium
| | - Frédéric Francis
- Functional and Evolutionary Entomology, Gembloux Agro-Bio Tech, University of Liege, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Julian Chen
- State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| |
Collapse
|
7
|
Kaszyca-Taszakowska N, Depa Ł. Microbiome of the Aphid Genus Dysaphis Börner (Hemiptera: Aphidinae) and Its Relation to Ant Attendance. INSECTS 2022; 13:insects13121089. [PMID: 36554999 PMCID: PMC9781600 DOI: 10.3390/insects13121089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 05/19/2023]
Abstract
Among mutualistic relationships of aphids with other organisms, there are two that seem to be of major importance: trophobiosis with ants and endosymbiosis of bacteria. While the former is well studied, the latter is the subject of an increasing amount of research constantly revealing new aspects of this symbiosis. Here, we studied the possible influence of ant attendance on the composition of aphid microbiota on primary and secondary hosts exploited by the aphid genus Dysaphis. The microbiome of 44 samples representing 12 aphid species was studied using an Illumina HiSeq 4000 with the V3-V4 region of 16S rRNA. The results showed a higher abundance of common facultative symbionts (Serratia, Regiella, Fukatsuia) in aphid species unattended by ants, but also on secondary hosts. However, in colonies attended by ants, the general species composition of bacterial symbionts was more rich in genera than in unattended colonies (Wolbachia, Gilliamella, Spiroplasma, Sphingomonas, Pelomonas). The results indicate a huge variability of facultative symbionts without clear correlation with ant attendance or aphid species. The possibility of multiple routes of bacterial infection mediated by ant-made environmental conditions is discussed.
Collapse
|
8
|
Li T, Wei Y, Zhao C, Li S, Gao S, Zhang Y, Wu Y, Lu C. Facultative symbionts are potential agents of symbiont-mediated RNAi in aphids. Front Microbiol 2022; 13:1020461. [PMID: 36504780 PMCID: PMC9727308 DOI: 10.3389/fmicb.2022.1020461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/07/2022] [Indexed: 11/24/2022] Open
Abstract
Aphids are major crop pests, and they can be controlled through the application of the promising RNA interference (RNAi) techniques. However, chemical synthesis yield of dsRNA for RNAi is low and costly. Another sustainable aphid pest control strategy takes advantage of symbiont-mediated RNAi (SMR), which can generate dsRNA by engineered microbes. Aphid host the obligate endosymbiont Buchnera aphidicola and various facultative symbionts that not only have a wide host range but are also vertically and horizontally transmitted. Thus, we described the potential of facultative symbionts in aphid pest control by SMR. We summarized the community and host range of these facultative symbionts, and then reviewed their probable horizontal transmitted routes and ecological functions. Moreover, recent advances in the cultivation and genetic engineering of aphid facultative symbionts were discussed. In addition, current legislation of dsRNA-based pest control strategies and their safety assessments were reviewed.
Collapse
Affiliation(s)
- Tong Li
- Institute of Plant Protection, Henan Key Laboratory of Crop Pest Control/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Yongjun Wei
- School of Pharmaceutical Sciences, Laboratory of Synthetic Biology, Zhengzhou University, Zhengzhou, China
| | - Chenchen Zhao
- Henan International Laboratory for Green Pest Control /College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Shaojian Li
- Institute of Plant Protection, Henan Key Laboratory of Crop Pest Control/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Suxia Gao
- Institute of Plant Protection, Henan Key Laboratory of Crop Pest Control/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Yuanchen Zhang
- College of Biological and Food Engineering, Anyang Institute of Technology, Anyang, China
| | - Yuqing Wu
- Institute of Plant Protection, Henan Key Laboratory of Crop Pest Control/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Henan Academy of Agricultural Sciences, Zhengzhou, China
| | - Chuantao Lu
- Institute of Plant Protection, Henan Key Laboratory of Crop Pest Control/Key Laboratory of Integrated Pest Management on Crops in Southern Region of North China, Henan Academy of Agricultural Sciences, Zhengzhou, China,Chuantao Lu
| |
Collapse
|
9
|
Pawar MM, Shivanna B, Prasannakumar MK, Parivallal PB, Suresh K, Meenakshi NH. Spatial distribution and community structure of microbiota associated with cowpea aphid ( Aphis craccivora Koch). 3 Biotech 2022; 12:75. [PMID: 35251878 PMCID: PMC8861231 DOI: 10.1007/s13205-022-03142-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 02/07/2022] [Indexed: 01/01/2023] Open
Abstract
Aphid populations were collected on cowpea, dolichos, redgram and black gram from Belagavi and Udupi locations. The samples were shotgun sequenced using the Illumina NovaSeq 6000 system to understand the spatial distribution and community structure of microbiota (especially bacteria) associated with aphids. In the present study, we identified obligatory nutritional symbiont Buchnera aphidicola and facultative symbionts Rickettsia sp. and Bacteroidetes endosymbiont of Geopemphigus sp. in all the aphid samples studied, although in varied abundance. On the other hand, Serratia symbiotica, Arsenophonus sp. and Acinetobacter sp. were only found in aphids on specific host plants, suggesting that host plants might influence the bacterial community structure. Furthermore, our study revealed that microbiota other than bacteria were highly insignificant in the aphid populations. Additionally, functional annotation of aphid metagenomes identified several pathways and enzymes involved in various physiological and ecological functions. Amino acid and vitamin biosynthesis-related pathways were predominant than carbohydrate metabolism, owing to their feeding habit and nutritional requirement. Chaperones related to stress tolerance such as GroEL and DnaK were identified. Enzymes involved in toxic chemical metabolisms such as glutathione transferase, phosphodiesterases and ABC transferases were observed. These enzymes may confer resistance to pesticides in the aphid populations. Overall, our results support the importance of host plants in structuring bacterial communities in aphids and show the functional roles of symbionts in aphid survival and development. Thus, these findings can be the basis for further detailed investigations and devising better strategies to manage the pests in field conditions. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s13205-022-03142-1.
Collapse
Affiliation(s)
- Madhusudan M. Pawar
- grid.413008.e0000 0004 1765 8271Insect Molecular Biology Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Bangalore, 560065 India
| | - B. Shivanna
- grid.413008.e0000 0004 1765 8271Insect Molecular Biology Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Bangalore, 560065 India
| | - M. K. Prasannakumar
- grid.413008.e0000 0004 1765 8271Plant PathoGenOmic Laboratory, Department of Plant Pathology, University of Agricultural Sciences, Bangalore, 560065 India
| | - P. Buela Parivallal
- grid.413008.e0000 0004 1765 8271Plant PathoGenOmic Laboratory, Department of Plant Pathology, University of Agricultural Sciences, Bangalore, 560065 India
| | - Kiran Suresh
- grid.10388.320000 0001 2240 3300Department of Ecophysiology, University of Bonn, 53115 Bonn, Germany
| | - N. H. Meenakshi
- grid.413008.e0000 0004 1765 8271Insect Molecular Biology Laboratory, Department of Agricultural Entomology, University of Agricultural Sciences, Bangalore, 560065 India
| |
Collapse
|
10
|
Beekman MM, Donner SH, Litjens JJH, Dicke M, Zwaan BJ, Verhulst EC, Pannebakker BA. Do aphids in Dutch sweet pepper greenhouses carry heritable elements that protect them against biocontrol parasitoids? Evol Appl 2022; 15:1580-1593. [DOI: 10.1111/eva.13347] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 11/28/2022] Open
Affiliation(s)
- Mariska M. Beekman
- Wageningen University & Research Laboratory of Genetics PO Box 16 6700 AA Wageningen The Netherlands
- Wageningen University & Research Laboratory of Entomology PO Box 16 6700 AA Wageningen The Netherlands
| | - S. Helena Donner
- Wageningen University & Research Laboratory of Genetics PO Box 16 6700 AA Wageningen The Netherlands
- Wageningen University & Research Laboratory of Entomology PO Box 16 6700 AA Wageningen The Netherlands
| | - Jordy J. H. Litjens
- Wageningen University & Research Laboratory of Genetics PO Box 16 6700 AA Wageningen The Netherlands
| | - Marcel Dicke
- Wageningen University & Research Laboratory of Entomology PO Box 16 6700 AA Wageningen The Netherlands
| | - Bas J. Zwaan
- Wageningen University & Research Laboratory of Genetics PO Box 16 6700 AA Wageningen The Netherlands
| | - Eveline C. Verhulst
- Wageningen University & Research Laboratory of Entomology PO Box 16 6700 AA Wageningen The Netherlands
| | - Bart A. Pannebakker
- Wageningen University & Research Laboratory of Genetics PO Box 16 6700 AA Wageningen The Netherlands
| |
Collapse
|
11
|
Guo C, Peng X, Wang H, Zheng X, Hu P, Zhou J, Ding Z, Wang X, Yang Z. Bacterial diversity of Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae) from different geographical conditions in China. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2021; 108:e21847. [PMID: 34596262 DOI: 10.1002/arch.21847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Insects harbor numerous endosymbionts, including bacteria, fungi, yeast, and viruses, which could affect the ecology and behavior of their hosts. However, data regarding the effect of environmental factors on endosymbiotic bacteria of Leptocybe invasa (Hymenoptera: Eulophidae) are quite rare. In this study, we assessed the diversity of endosymbiotic bacteria of L. invasa from 10 different geographic populations collected across China through the Illumina MiSeq platform. A total of 547 OTUs were generated, which were annotated into 19 phyla, 33 classes, 75 orders, 137 families, and 274 genera. The dominant bacteria detected in L. invasa were Rickettsia, and Pantoea, Enterobacter, Pseudomonas, Acinetobacter, and Bacillus were also annotated among each population. Nevertheless, the endosymbiotic bacterial abundance and diversity varied among different populations, which was related to the local climate (annual mean high temperature). The bacterial function prediction analysis showed that these endosymbiotic bacteria were concentrated in metabolism, such as carbohydrate, amino acid, and energy metabolism. Overall, the results provide a comprehensive description of the endosymbiotic bacteria in 10 different populations of an important eucalyptus pest L. invasa, and help to understand the endosymbiotic bacterial diversity and adaptation of various conditions.
Collapse
Affiliation(s)
- Chunhui Guo
- College of Forestry, Guangxi University, Nanning, China
| | - Xin Peng
- College of Forestry, Guangxi University, Nanning, China
| | - Hantang Wang
- College of Forestry, Guangxi University, Nanning, China
| | - Xialin Zheng
- Guangxi Key Laboratory of Agric-Environment and Agric-Products Safety, College of Agriculture, Guangxi University, Nanning, China
| | - Ping Hu
- College of Forestry, Guangxi University, Nanning, China
| | - Jing Zhou
- College of Forestry, Guangxi University, Nanning, China
| | - Zhirou Ding
- College of Forestry, Guangxi University, Nanning, China
| | - Xue Wang
- College of Forestry, Guangxi University, Nanning, China
| | - Zhende Yang
- College of Forestry, Guangxi University, Nanning, China
- Guangxi Key Laboratory of Forest Ecology and Conservation, Forestry College, Guangxi University, Nanning, China
| |
Collapse
|
12
|
Balakrishnan B, Wu H, Cao L, Zhang Y, Li W, Han R. Immune Response and Hemolymph Microbiota of Apis mellifera and Apis cerana After the Challenge With Recombinant Varroa Toxic Protein. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:1310-1320. [PMID: 33822096 DOI: 10.1093/jee/toab047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Indexed: 06/12/2023]
Abstract
The honey bee is a significant crop pollinator and key model insect for understanding social behavior, disease transmission, and development. The ectoparasitic Varroa destructor mite put threats on the honey bee industry. A Varroa toxic protein (VTP) from the saliva of Varroa mites contributes to the toxicity toward Apis cerana and the deformed wing virus elevation in Apis mellifera. However, the immune response and hemolymph microbiota of honey bee species after the injection of recombinant VTP has not yet been reported. In this study, both A. cerana and A. mellifera worker larvae were injected with the recombinant VTP. Then the expressions of the honey bee immune genes abaecin, defensin, and domeless at three time points were determined by qRT-PCR, and hemolymph microbial community were analyzed by culture-dependent method, after recombinant VTP injection. The mortality rates of A. cerana larvae were much higher than those of A. mellifera larvae after VTP challenge. VTP injection induced the upregulation of defensin gene expression in A. mellifera larvae, and higher levels of abaecin and domeless mRNAs response in A. cerana larvae, compared with the control (without any injection). Phosphate buffer saline (PBS) injection also upregulated the expression levels of abaecin, defensin, and domeless in A. mellifera and A. cerana larvae. Three bacterial species (Enterococcus faecalis, Staphylococcus cohnii, and Bacillus cereus) were isolated from the hemolymph of A. cerana larvae after VTP injection and at 48 h after PBS injections. Two bacterial species (Stenotrophomonas maltophilia and Staphylococcus aureus) were isolated from A. mellifera larvae after VTP challenge. No bacterial colonies were detected from the larval hemolymph of both honey bee species treated by injection only and the control. The result indicates that abaecin, defensin, and domeless genes and hemolymph microbiota respond to the VTP challenge. VTP injection might induce the dramatic growth of different bacterial species in the hemolymph of the injected larvae of A. mellifera and A. cerana, which provide cues for further studying the interactions among the honey bee, VTP, and hemolymph bacteria.
Collapse
Affiliation(s)
- Balachandar Balakrishnan
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| | - Hua Wu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| | - Li Cao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| | - Yi Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| | - Wenfeng Li
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| | - Richou Han
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, Guangdong, China
| |
Collapse
|
13
|
Zytynska SE, Tighiouart K, Frago E. Benefits and costs of hosting facultative symbionts in plant-sucking insects: A meta-analysis. Mol Ecol 2021; 30:2483-2494. [PMID: 33756029 DOI: 10.1111/mec.15897] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 03/18/2021] [Indexed: 01/01/2023]
Abstract
Many animals have evolved associations with symbiotic microbes that benefit the host through increased growth, lifespan, and survival. Some interactions are obligate (essential for survival) while others are facultative (usually beneficial but not essential). Not all individuals host all facultative symbionts in a population, and thus there is probably a trade-off between the cost of hosting these symbionts and the benefits they confer to the host. Plant-sucking insects have been one of the most important models to test these costs and benefits experimentally. This research is now moving beyond the description of symbiont effects towards understanding the mechanisms of action, and their role in the wider ecological community. We present a quantitative and systematic analysis of the published evidence exploring this question. We found that whitefly and true bugs experience benefits through increased growth and fecundity, whereas aphids experience costs to their fecundity but benefits through increased resistance to natural enemies. We also report the lack of data in some plant-sucking groups, and explore variation in effect strengths and directions across aphid host, symbiont and plant species thus highlighting the importance of considering the context dependency of these interactions.
Collapse
Affiliation(s)
- Sharon E Zytynska
- Department of Evolution, Ecology and Behaviour, Institute of Infection, Veterinary & Ecological Sciences, University of Liverpool, Liverpool, UK
| | | | - Enric Frago
- CIRAD, UMR PVBMT - Saint-Pierre, La Réunion, France.,CIRAD, CBGP, Montpellier, France.,CBGP, CIRAD, INRA, IRD, Montpellier SupAgro, University Montpellier, Montpellier, France
| |
Collapse
|
14
|
Xu T, Chen J, Jiang L, Qiao G. Diversity of bacteria associated with Hormaphidinae aphids (Hemiptera: Aphididae). INSECT SCIENCE 2021; 28:165-179. [PMID: 31840419 PMCID: PMC7818174 DOI: 10.1111/1744-7917.12746] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 10/07/2019] [Accepted: 12/01/2019] [Indexed: 05/29/2023]
Abstract
Bacteria are ubiquitous inhabitants of animals. Hormaphidinae is a particular aphid group exhibiting very diverse life history traits. However, the microbiota in this group is poorly known. In the present study, using high-throughput sequencing of bacterial 16S ribosomal RNA gene amplicons, we surveyed the bacterial flora in hormaphidine aphids and explored whether the aphid tribe, host plant and geographical distribution are associated with the distribution of secondary symbionts. The most dominant bacteria detected in hormaphidine species are heritable symbionts. As expected, the primary endosymbiont Buchnera aphidicola is the most abundant symbiont across all species and has cospeciated with its host aphids. Six secondary symbionts were detected in Hormaphidinae. Arsenophonus is widespread in Hormaphidinae species, suggesting the possibility of ancient acquisition of this symbiont. Ordination analyses and statistical tests show that the symbiont composition does not seem to relate to any of the aphid tribes, host plants or geographical distributions, which indicate that horizontal transfers might occur for these symbionts in Hormaphidinae. Correlation analysis exhibits negative interference between Buchnera and coexisting secondary symbionts, while the interactions between different secondary symbionts are complicated. These findings display a comprehensive picture of the microbiota in Hormaphidinae and may be helpful in understanding the symbiont diversity within a group of aphids.
Collapse
Affiliation(s)
- Ting‐Ting Xu
- Key Laboratory of Zoological Systematics and Evolution, Institute of ZoologyChinese Academy of SciencesBeijingChina
- College of Life SciencesUniversity of Chinese Academy of SciencesBeijingChina
| | - Jing Chen
- Key Laboratory of Zoological Systematics and Evolution, Institute of ZoologyChinese Academy of SciencesBeijingChina
| | - Li‐Yun Jiang
- Key Laboratory of Zoological Systematics and Evolution, Institute of ZoologyChinese Academy of SciencesBeijingChina
| | - Ge‐Xia Qiao
- Key Laboratory of Zoological Systematics and Evolution, Institute of ZoologyChinese Academy of SciencesBeijingChina
- College of Life SciencesUniversity of Chinese Academy of SciencesBeijingChina
| |
Collapse
|
15
|
Hafer‐Hahmann N, Vorburger C. Positive association between the diversity of symbionts and parasitoids of aphids in field populations. Ecosphere 2021. [DOI: 10.1002/ecs2.3355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- Nina Hafer‐Hahmann
- Eawag, Swiss Federal Institute of Aquatic Science and Technology Überlandstrasse 133 Dübendorf8600Switzerland
| | - Christoph Vorburger
- Eawag, Swiss Federal Institute of Aquatic Science and Technology Überlandstrasse 133 Dübendorf8600Switzerland
- Institute of Integrative Biology ETH Zürich Universitätsstrasse 16 Zürich8092Switzerland
| |
Collapse
|
16
|
Wu H, Rao ZC, Cao L, De Clercq P, Han RC. Infection of Ophiocordyceps sinensis Fungus Causes Dramatic Changes in the Microbiota of Its Thitarodes Host. Front Microbiol 2020; 11:577268. [PMID: 33343519 PMCID: PMC7744566 DOI: 10.3389/fmicb.2020.577268] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 11/13/2020] [Indexed: 12/31/2022] Open
Abstract
The Chinese cordyceps is a unique and valuable parasitic complex of Thitarodes/Hepialus ghost moths and the Ophiocordyceps sinensis fungus for medicine and health foods from the Tibetan Plateau. During artificial cultivation of Chinese cordyceps, the induction of blastospores into hyphae is a prerequisite for mummification of the infected Thitarodes larvae. To explore the microbial involvement in the induction of mycelia-blastospore transition, the microbiota of the hemolymph and gut from Thitarodes xiaojinensis larvae with or without injected O. sinensis blastospores were investigated by culture-dependent and -independent methods. Twenty-five culturable bacterial species and 14 fungal species, together with 537 bacterial operational taxonomic units (OTUs) and 218 fungal OTUs, were identified from the hemolymph and gut of samples from five stages including living larvae without injected fungi (A) or with high blastospore load (B), mummifying larvae without mycelia coating (C), freshly mummifying larvae coated with mycelia (D), and completely mummified larvae with mycelia (E). Two culturable bacterial species (Serratia plymuthica, Serratia proteamaculans), and 47 bacterial and 15 fungal OTUs were considered as shared species. The uninfected larval hemolymph contained 13 culturable bacterial species but no fungal species, together with 164 bacterial and 73 fungal OTUs. To our knowledge, this is the first study to detect large bacterial communities from the hemolymph of healthy insect larvae. When the living larvae contained high blastospore load, the culturable bacterial community was sharply inhibited in the hemolymph but the bacterial and fungal community greatly increased in the gut. In general, high blastospore load increased bacterial diversity but sharply decreased fungal diversity in the hemolymph and gut by OTUs. The bacterial loads of four culturable species (Chryseobacterium sp., Pseudomonas fragi, S. plymuthica, S. proteamaculans) increased significantly and O. sinensis and Pseudomonas spp. became dominant microbes, when the infected larvae became mummified, indicating their possible involvement in the larval mummification process. The discovery of many opportunistic pathogenic bacteria in the hemolymph of the healthy larvae, the larval microbial diversity influenced by O. sinensis challenge and the involvement of dominant bacteria during larval mummification process provide new insight into the infection and mummification mechanisms of O. sinensis in its Thitarodes hosts.
Collapse
Affiliation(s)
- Hua Wu
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.,Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Zhong-Chen Rao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Li Cao
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Patrick De Clercq
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Ri-Chou Han
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| |
Collapse
|
17
|
Romanov DA, Zakharov IA, Shaikevich EV. Wolbachia, Spiroplasma, and Rickettsia symbiotic bacteria in aphids (Aphidoidea). Vavilovskii Zhurnal Genet Selektsii 2020; 24:673-682. [PMID: 33659853 PMCID: PMC7716544 DOI: 10.18699/vj20.661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Aphids are a diverse family of crop pests. Aphids formed a complex relationship with intracellular bacteria.
Depending on the region of study, the species composition of both aphids and their facultative endosymbionts
varies. The aim of the work was to determine the occurrence and genetic diversity of Wolbachia, Spiroplasma and
Rickettsia symbionts in aphids collected in 2018–2019 in Moscow. For these purposes, 578 aphids from 32 collection
sites were tested by PCR using specific primers. At least 21 species of aphids from 14 genera and four families were
identified by barcoding method, of which 11 species were infected with endosymbionts. Rickettsia was found in six
species, Wolbachia in two species, Spiroplasma in one species. The presence of Rickettsia in Impatientinum asiaticum,
Myzus cerasi, Hyalopterus pruni, Eucallipterus tiliae, Chaitophorus tremulae and Wolbachia in Aphis pomi and C. tremulae
has been described for the first time. A double infection with Rickettsia and Spiroplasma was detected in a half of
pea aphid (Acyrthosiphon pisum) individuals. For the first time was found that six species of aphids are infected with
Rickettsia that are genetically different from previously known. It was first discovered that A. pomi is infected with two
Wolbachia strains, one of which belongs to supergroup B and is genetically close to Wolbachia from C. tremulae. The
second Wolbachia strain from A. pomi belongs to the supergroup M, recently described in aphid species. Spiroplasma,
which we observed in A. pisum, is genetically close to male killing Spiroplasma from aphids, ladybirds and moths. Both
maternal inheritance and horizontal transmission are the pathways for the distribution of facultative endosymbiotic
bacteria in aphids.
Collapse
Affiliation(s)
- D A Romanov
- Vavilov Institute of General Genetics of the Russian Academy of Sciences, Moscow, Russia Moscow Region State University, Mytishi, Moscow region, Russia
| | - I A Zakharov
- Vavilov Institute of General Genetics of the Russian Academy of Sciences, Moscow, Russia
| | - E V Shaikevich
- Vavilov Institute of General Genetics of the Russian Academy of Sciences, Moscow, Russia Martsinovsky Institute of Medical Parasitology, Tropical and Vector Borne Diseases, Sechenov First Moscow State Меdical University, Moscow, Russia
| |
Collapse
|
18
|
Hafer-Hahmann N, Vorburger C. Parasitoids as drivers of symbiont diversity in an insect host. Ecol Lett 2020; 23:1232-1241. [PMID: 32375203 DOI: 10.1111/ele.13526] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/25/2020] [Accepted: 04/08/2020] [Indexed: 01/01/2023]
Abstract
Immune systems have repeatedly diversified in response to parasite diversity. Many animals have outsourced part of their immune defence to defensive symbionts, which should be affected by similar evolutionary pressures as the host's own immune system. Protective symbionts provide efficient and specific protection and respond to changing selection pressure by parasites. Here we use the aphid Aphis fabae, its protective symbiont Hamiltonella defensa, and its parasitoid Lysiphlebus fabarum to test whether parasite diversity can maintain diversity in protective symbionts. We exposed aphid populations with the same initial symbiont composition to parasitoid populations that differed in their diversity. As expected, single parasitoid genotypes mostly favoured a single symbiont that was most protective against that particular parasitoid, while multiple symbionts persisted in aphids exposed to more diverse parasitoid populations, which in turn affected aphid population density and rates of parasitism. Parasite diversity may be crucial to maintaining symbiont diversity in nature.
Collapse
Affiliation(s)
- Nina Hafer-Hahmann
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland
| | - Christoph Vorburger
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland.,Institute of Integrative Biology, ETH Zürich, Universitätsstrasse 16, 8092 Zürich, Switzerland
| |
Collapse
|
19
|
Xu S, Jiang L, Qiao G, Chen J. The Bacterial Flora Associated with the Polyphagous Aphid Aphis gossypii Glover (Hemiptera: Aphididae) Is Strongly Affected by Host Plants. MICROBIAL ECOLOGY 2020; 79:971-984. [PMID: 31802184 PMCID: PMC7198476 DOI: 10.1007/s00248-019-01435-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Aphids live in symbiosis with a variety of bacteria, including the obligate symbiont Buchnera aphidicola and diverse facultative symbionts. The symbiotic associations for one aphid species, especially for polyphagous species, often differ across populations. In the present study, by using high-throughput 16S rRNA sequencing, we surveyed in detail the microbiota in natural populations of the cotton aphid Aphis gossypii in China and assessed differences in bacterial diversity with respect to host plant and geography. The microbial community of A. gossypii was dominated by a few heritable symbionts. Arsenophonus was the most dominant secondary symbiont, and Spiroplasma was detected for the first time. Statistical tests and ordination analyses showed that host plants rather than geography seemed to have shaped the associated symbiont composition. Special symbiont communities inhabited the Cucurbitaceae-feeding populations, which supported the ecological specialization of A. gossypii on cucurbits from the viewpoint of symbiotic bacteria. Correlation analysis suggested antagonistic interactions between Buchnera and coexisting secondary symbionts and more complicated interactions between different secondary symbionts. Our findings lend further support to an important role of the host plant in structuring symbiont communities of polyphagous aphids and will improve our understanding of the interactions among phytophagous insects, symbionts, and environments.
Collapse
Affiliation(s)
- Shifen Xu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liyun Jiang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Gexia Qiao
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Jing Chen
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
| |
Collapse
|
20
|
Xu TT, Jiang LY, Chen J, Qiao GX. Host Plants Influence the Symbiont Diversity of Eriosomatinae (Hemiptera: Aphididae). INSECTS 2020; 11:E217. [PMID: 32244698 PMCID: PMC7240687 DOI: 10.3390/insects11040217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/16/2020] [Accepted: 03/28/2020] [Indexed: 01/13/2023]
Abstract
Eriosomatinae is a particular aphid group with typically heteroecious holocyclic life cycle, exhibiting strong primary host plant specialization and inducing galls on primary host plants. Aphids are frequently associated with bacterial symbionts, which can play fundamental roles in the ecology and evolution of their host aphids. However, the bacterial communities in Eriosomatinae are poorly known. In the present study, using high-throughput sequencing of the bacterial 16S ribosomal RNA gene, we surveyed the bacterial flora of eriosomatines and explored the associations between symbiont diversity and aphid relatedness, aphid host plant and geographical distribution. The microbiota of Eriosomatinae is dominated by the heritable primary endosymbiont Buchnera and several facultative symbionts. The primary endosymbiont Buchnera is expectedly the most abundant symbiont across all species. Six facultative symbionts were identified. Regiella was the most commonly identified facultative symbiont, and multiple infections of facultative symbionts were detected in the majority of the samples. Ordination analyses and statistical tests show that the symbiont community of aphids feeding on plants from the family Ulmaceae were distinguishable from aphids feeding on other host plants. Species in Eriosomatinae feeding on different plants are likely to carry different symbiont compositions. The symbiont distributions seem to be not related to taxonomic distance and geographical distance. Our findings suggest that host plants can affect symbiont maintenance, and will improve our understanding of the interactions between aphids, their symbionts and ecological conditions.
Collapse
Affiliation(s)
- Ting-Ting Xu
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; (T.-T.X.); (L.-Y.J.)
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li-Yun Jiang
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; (T.-T.X.); (L.-Y.J.)
| | - Jing Chen
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; (T.-T.X.); (L.-Y.J.)
| | - Ge-Xia Qiao
- Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; (T.-T.X.); (L.-Y.J.)
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
21
|
Kieran TJ, Arnold KMH, Thomas JC, Varian CP, Saldaña A, Calzada JE, Glenn TC, Gottdenker NL. Regional biogeography of microbiota composition in the Chagas disease vector Rhodnius pallescens. Parasit Vectors 2019; 12:504. [PMID: 31665056 PMCID: PMC6821009 DOI: 10.1186/s13071-019-3761-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 10/22/2019] [Indexed: 12/17/2022] Open
Abstract
Background Triatomine bugs are vectors of the protozoan parasite Trypanosoma cruzi, which causes Chagas disease. Rhodnius pallescens is a major vector of Chagas disease in Panama. Understanding the microbial ecology of disease vectors is important in the development of vector management strategies that target vector survival and fitness. In this study we examined the whole-body microbial composition of R. pallescens from three locations in Panama. Methods We collected 89 R. pallescens specimens using Noireau traps in Attalea butyracea palms. We then extracted total DNA from whole-bodies of specimens and amplified bacterial microbiota using 16S rRNA metabarcoding PCR. The 16S libraries were sequenced on an Illumina MiSeq and analyzed using QIIME2 software. Results We found Proteobacteria, Actinobacteria, Bacteroidetes and Firmicutes to be the most abundant bacterial phyla across all samples. Geographical location showed the largest difference in microbial composition with northern Veraguas Province having the most diversity and Panama Oeste Province localities being most similar to each other. Wolbachia was detected in high abundance (48–72%) at Panama Oeste area localities with a complete absence of detection in Veraguas Province. No significant differences in microbial composition were detected between triatomine age class, primary blood meal source, or T. cruzi infection status. Conclusions We found biogeographical regions differ in microbial composition among R. pallescens populations in Panama. While overall the microbiota has bacterial taxa consistent with previous studies in triatomine microbial ecology, locality differences are an important observation for future studies. Geographical heterogeneity in microbiomes of vectors is an important consideration for future developments that leverage microbiomes for disease control.
Collapse
Affiliation(s)
- Troy J Kieran
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA, USA.
| | - Kaylee M H Arnold
- Odum School of Ecology, University of Georgia, Athens, GA, USA.,Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA
| | - Jesse C Thomas
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA, USA
| | - Christina P Varian
- Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA.,Department of Veterinary Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - Azael Saldaña
- Instituto Conmemorativo Gorgas de Estudios de la Salud (ICGES), Panama City, Panama
| | - Jose E Calzada
- Instituto Conmemorativo Gorgas de Estudios de la Salud (ICGES), Panama City, Panama
| | - Travis C Glenn
- Department of Environmental Health Science, College of Public Health, University of Georgia, Athens, GA, USA.,Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA.,Institute of Bioinformatics, University of Georgia, Athens, GA, USA
| | - Nicole L Gottdenker
- Odum School of Ecology, University of Georgia, Athens, GA, USA. .,Center for the Ecology of Infectious Diseases, University of Georgia, Athens, GA, USA. .,Department of Veterinary Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA.
| |
Collapse
|
22
|
Renoz F, Pons I, Vanderpoorten A, Bataille G, Noël C, Foray V, Pierson V, Hance T. Evidence for Gut-Associated Serratia symbiotica in Wild Aphids and Ants Provides New Perspectives on the Evolution of Bacterial Mutualism in Insects. MICROBIAL ECOLOGY 2019; 78:159-169. [PMID: 30276419 DOI: 10.1007/s00248-018-1265-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
Many insects engage in symbiotic associations with diverse assemblages of bacterial symbionts that can deeply impact on their ecology and evolution. The intraspecific variation of symbionts remains poorly assessed while phenotypic effects and transmission behaviors, which are key processes for the persistence and evolution of symbioses, may differ widely depending on the symbiont strains. Serratia symbiotica is one of the most frequent symbiont species in aphids and a valuable model to assess this intraspecific variation since it includes both facultative and obligate symbiotic strains. Despite evidence that some facultative S. symbiotica strains exhibit a free-living capacity, the presence of these strains in wild aphid populations, as well as in insects with which they maintain regular contact, has never been demonstrated. Here, we examined the prevalence, diversity, and tissue tropism of S. symbiotica in wild aphids and associated ants. We found a high occurrence of S. symbiotica infection in ant populations, especially when having tended infected aphid colonies. We also found that the S. symbiotica diversity includes strains found located within the gut of aphids and ants. In the latter, this tissue tropism was found restricted to the proventriculus. Altogether, these findings highlight the extraordinary diversity and versatility of an insect symbiont and suggest the existence of novel routes for symbiont acquisition in insects.
Collapse
Affiliation(s)
- François Renoz
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium.
| | - Inès Pons
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium
| | - Alain Vanderpoorten
- Department of Biology, Institute of Botany, University of Liège, B22 Sart Tilman, 4000, Liege, Belgium
| | - Gwennaël Bataille
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium
| | - Christine Noël
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium
| | - Vincent Foray
- Centre de Recherche de Biologie cellulaire de Montpellier, UMR CNRS 5237, 34293, Montpellier, France
| | - Valentin Pierson
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium
| | - Thierry Hance
- Biodiversity Research Centre, Earth and Life Institute, Université catholique de Louvain, Croix du sud 4-5, 1348, Louvain-la-Neuve, Belgium
| |
Collapse
|
23
|
Blow F, Douglas AE. The hemolymph microbiome of insects. JOURNAL OF INSECT PHYSIOLOGY 2019; 115:33-39. [PMID: 30953618 DOI: 10.1016/j.jinsphys.2019.04.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 03/27/2019] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Hemolymph has long been recognized as a key mediator of nutritional and immunological homeostasis in insects, with the tacit understanding that hemolymph is a hostile environment for microorganisms, and microbiologically sterile in healthy insects. Recent research is overturning the conventional wisdom, and there is now overwhelming evidence that various non-pathogenic microorganisms can stably or transiently inhabit hemolymph in a diversity of insects. Most is known about Spiroplasma, especially in Drosophila species, and secondary symbionts of the Enterobacteriaceae, notably Hamiltonella defensa, in aphids. These bacteria require many nutrients, representing a likely drain on host nutritional resources, and they persist in the hemolymph by a combination of evasion and tolerance of insect immune effectors. These traits can be costly to the insect host. For some hemolymph microorganisms, these costs are balanced by other traits beneficial to the insect, notably protection against natural enemies mediated by specific toxins or competition for key nutrients. Three key priorities for future research are: to investigate the prevalence and taxonomic diversity of hemolymph microorganisms in insects; to establish the role of host nutritional and immune factors as determinants of the abundance and proliferation rates of hemolymph microorganisms; and to integrate the developing understanding of these microorganisms and their impacts (both costs and benefits) on insect nutrition and immune function into the wider study of insect physiology.
Collapse
Affiliation(s)
- Frances Blow
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
| | - Angela E Douglas
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA; Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, USA.
| |
Collapse
|
24
|
Hafer N, Vorburger C. Diversity begets diversity: do parasites promote variation in protective symbionts? CURRENT OPINION IN INSECT SCIENCE 2019; 32:8-14. [PMID: 31113636 DOI: 10.1016/j.cois.2018.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/27/2018] [Accepted: 08/27/2018] [Indexed: 06/09/2023]
Abstract
Insects commonly possess heritable microbial symbionts that increase their resistance to particular parasites. A diverse community of defensive symbionts may thus provide hosts with effective and specific protection against multiple parasites, although costs might constrain the accumulation of many symbionts. In parallel to the allelic diversity in the MHC complex of the vertebrate immune system, parasite diversity could be the driving force behind symbiont diversity. There is indeed evidence that parasites have the ability to drive frequencies of defensive symbionts in their hosts, and that these symbionts influence parasite communities, but direct evidence that parasite diversity can promote symbiont diversity is still lacking. We provide suggestions to investigate this potential link.
Collapse
Affiliation(s)
- Nina Hafer
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland.
| | - Christoph Vorburger
- EAWAG, Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600 Dübendorf, Switzerland; Institute of Integrative Biology, ETH Zürich, Universitätsstrasse 16, 8092 Zürich, Switzerland
| |
Collapse
|
25
|
Ware IM, Fitzpatrick CR, Senthilnathan A, Bayliss SLJ, Beals KK, Mueller LO, Summers JL, Wooliver RC, Van Nuland ME, Kinnison MT, Palkovacs EP, Schweitzer JA, Bailey JK. Feedbacks link ecosystem ecology and evolution across spatial and temporal scales: Empirical evidence and future directions. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13267] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Ian M. Ware
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | | | | | - Shannon L. J. Bayliss
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | - Kendall K. Beals
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | - Liam O. Mueller
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | - Jennifer L. Summers
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | - Rachel C. Wooliver
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | | | | | - Eric P. Palkovacs
- Department of Ecology and Evolutionary Biology University of California Santa Cruz California
| | - Jennifer A. Schweitzer
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| | - Joseph K. Bailey
- Department of Ecology and Evolutionary Biology University of Tennessee Knoxville Tennessee
| |
Collapse
|
26
|
Ye Z, Vollhardt IMG, Parth N, Rubbmark O, Traugott M. Facultative bacterial endosymbionts shape parasitoid food webs in natural host populations: A correlative analysis. J Anim Ecol 2018; 87:1440-1451. [PMID: 29928757 PMCID: PMC6099228 DOI: 10.1111/1365-2656.12875] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 06/03/2018] [Indexed: 12/11/2022]
Abstract
Facultative bacterial endosymbionts can protect their aphid hosts from natural enemies such as hymenopteran parasitoids. As such, they have the capability to modulate interactions between aphids, parasitoids and hyperparasitoids. However, the magnitude of these effects in natural aphid populations and their associated parasitoid communities is currently unknown. Moreover, environmental factors such as plant fertilization and landscape complexity are known to affect aphid–parasitoid interactions but it remains unclear how such environmental factors affect the interplay between aphids, parasitoids and endosymbionts. Here, we tested whether facultative endosymbionts confer protection to parasitoids in natural populations of the English grain aphid, Sitobion avenae, and if this is affected by plant fertilization and landscape complexity. Furthermore, we examined whether the effects of facultative endosymbionts can cascade up to the hyperparasitoid level and increase primary‐hyperparasitoid food web specialization. Living aphids and mummies were collected in fertilized and unfertilized plots within 13 wheat fields in Central Germany. We assessed the occurrence of primary parasitoid, hyperparasitoid and endosymbiont species in aphids and mummies using a newly established molecular approach. Facultative endosymbiont infection rates were high across fields (~80%), independent of whether aphids were parasitized or unparasitized. Aphid mummies exhibited a significantly lower share of facultative endosymbiont infection (~38%). These findings suggest that facultative endosymbionts do not affect parasitoid oviposition behaviour, but decrease parasitoid survival in the host. Facultative endosymbiont infection rates were lower in mummies collected from fertilized compared to unfertilized plants, indicating that plant fertilization boosts the facultative endosymbiont protective effect. Furthermore, we found strong evidence for species‐specific and negative cascading effects of facultative endosymbionts on primary and hyperparasitoids, respectively. Facultative endosymbionts impacted parasitoid assemblages and increased the specialization of primary‐hyperparasitoid food webs: these effects were independent from and much stronger than other environmental factors. The current findings strongly suggest that facultative endosymbionts act as a driving force in aphid–parasitoid–hyperparasitoid networks: they shape insect community composition at different trophic levels and modulate, directly and indirectly, the interactions between aphids, parasitoids and their environment.
Collapse
Affiliation(s)
- Zhengpei Ye
- Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Ines M G Vollhardt
- Agroecology, Department of Crop Sciences, Georg-August-University Göttingen, Göttingen, Germany
| | - Nadia Parth
- Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Oskar Rubbmark
- Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Michael Traugott
- Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| |
Collapse
|
27
|
Rock DI, Smith AH, Joffe J, Albertus A, Wong N, O'Connor M, Oliver KM, Russell JA. Context-dependent vertical transmission shapes strong endosymbiont community structure in the pea aphid, Acyrthosiphon pisum. Mol Ecol 2018; 27:2039-2056. [PMID: 29215202 DOI: 10.1111/mec.14449] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 11/15/2017] [Accepted: 11/24/2017] [Indexed: 01/11/2023]
Abstract
Animal-associated microbiomes are often comprised of structured, multispecies communities, with particular microbes showing trends of co-occurrence or exclusion. Such structure suggests variable community stability, or variable costs and benefits-possibilities with implications for symbiont-driven host adaptation. In this study, we performed systematic screening for maternally transmitted, facultative endosymbionts of the pea aphid, Acyrthosiphon pisum. Sampling across six locales, with up to 5 years of collection in each, netted significant and consistent trends of community structure. Co-infections between Serratia symbiotica and Rickettsiella viridis were more common than expected, while Rickettsia and X-type symbionts colonized aphids with Hamiltonella defensa more often than expected. Spiroplasma co-infected with other endosymbionts quite rarely, showing tendencies to colonize as a single species monoculture. Field estimates of maternal transmission rates help to explain our findings: while Serratia and Rickettsiella improved each other's transmission, Spiroplasma reduced transmission rates of co-infecting endosymbionts. In summary, our findings show that North American pea aphids harbour recurring combinations of facultative endosymbionts. Common symbiont partners play distinct roles in pea aphid biology, suggesting the creation of "generalist" aphids receiving symbiont-based defence against multiple ecological stressors. Multimodal selection, at the host level, may thus partially explain our results. But more conclusively, our findings show that within-host microbe interactions, and their resulting impacts on transmission rates, are an important determinant of community structure. Widespread distributions of heritable symbionts across plants and invertebrates hint at the far-reaching implications for these findings, and our work further shows the benefits of symbiosis research within a natural context.
Collapse
Affiliation(s)
- Danielle I Rock
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Andrew H Smith
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Jonah Joffe
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Amie Albertus
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | - Narayan Wong
- Department of Biology, Drexel University, Philadelphia, PA, USA
| | | | - Kerry M Oliver
- Department of Entomology, University of Georgia, Athens, GA, USA
| | - Jacob A Russell
- Department of Biology, Drexel University, Philadelphia, PA, USA
| |
Collapse
|
28
|
Loxdale HD, Balog A. Aphid specialism as an example of ecological-evolutionary divergence. Biol Rev Camb Philos Soc 2017; 93:642-657. [PMID: 28836372 DOI: 10.1111/brv.12361] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/10/2017] [Accepted: 07/12/2017] [Indexed: 11/30/2022]
Abstract
Debate still continues around the definition of generalism and specialism in nature. To some, generalism is equated solely with polyphagy, but this cannot be readily divorced from other essential biological factors, such as morphology, behaviour, genetics, biochemistry, chemistry and ecology, including chemical ecology. Viewed in this light, and accepting that when living organisms evolve to fill new ecological-evolutionary niches, this is the primal act of specialisation, then perhaps all living organisms are specialist in the broadest sense. To illustrate the levels of specialisation that may be found in a group of animals, we here provide an overview of those displayed by a subfamily of hemipteran insects, the Aphididae, which comprises some 1600 species/subspecies in Europe alone and whose members are specialised in a variety of lifestyle traits. These include life cycle, host adaptation, dispersal and migration, associations with bacterial symbionts (in turn related to host adaptation and resistance to hymenopterous wasp parasitoids), mutualisms with ants, and resistance to insecticides. As with polyphagy, these traits cannot easily be separated from one another, but rather, are interconnected, often highly so, which makes the Aphididae a fascinating animal group to study, providing an informative, perhaps unique, model to illustrate the complexities of defining generalism versus specialism.
Collapse
Affiliation(s)
- Hugh D Loxdale
- School of Biosciences, Cardiff University, Cardiff, CF10 3AX, U.K
| | - Adalbert Balog
- Faculty of Technical and Human Science, Department of Horticulture, Sapientia Hungarian University of Transylvania, 540485, Tirgu-Mures, Romania
| |
Collapse
|
29
|
Hussain M, Akutse KS, Ravindran K, Lin Y, Bamisile BS, Qasim M, Dash CK, Wang L. Effects of different temperature regimes on survival of Diaphorina citri and its endosymbiotic bacterial communities. Environ Microbiol 2017; 19:3439-3449. [PMID: 28618183 DOI: 10.1111/1462-2920.13821] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 04/26/2017] [Accepted: 06/06/2017] [Indexed: 12/21/2022]
Abstract
The Asian citrus psyllid, Diaphorina citri, is a major pest of citrus and vector of citrus greening (huanglongbing) in Asian. In our field-collected psyllid samples, we discovered that Fuzhou (China) and Faisalabad (Pakistan), populations harbored an obligate primary endosymbiont Candidatus Carsonella (gen. nov.) with a single species, Candidatus Carsonella ruddii (sp. nov.) and a secondary endosymbiont, Wolbachia surface proteins (WSP) which are intracellular endosymbionts residing in the bacteriomes. Responses of these symbionts to different temperatures were examined and their host survival assessed. Diagnostic PCR assays showed that the endosymbionts infection rates were not significantly reduced in both D. citri populations after 24 h exposure to cold or heat treatments. Although quantitative PCR assays showed significant reduction of WSP relative densities at 40°C for 24 h, a substantial decrease occurred as the exposure duration increased beyond 3 days. Under the same temperature regimes, Ca. C. ruddii density was initially less affected during the first exposure day, but rapidly reduced at 3-5 days compared to WSP. However, the mortality of the psyllids increased rapidly as exposure time to heat treatment increased. The responses of the two symbionts to unfavorable temperature regimes highlight the complex host-symbionts interactions between D. citri and its associated endosymbionts.
Collapse
Affiliation(s)
- Mubasher Hussain
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Komivi Senyo Akutse
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Plant Health Division, International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772-00100, Nairobi, Kenya
| | - Keppanan Ravindran
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yongwen Lin
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Bamisope Steve Bamisile
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Muhammad Qasim
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chandra Kanta Dash
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Faculty of Agriculture, Sylhet Agricultural University, Sylhet 3300, Bangladesh
| | - Liande Wang
- Plant Protection College, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops, Ministry of Agriculture, Fuzhou 350002, China.,Key Laboratory of Biopesticide and Chemical Biology, Ministry of Education, Fuzhou 350002, China.,Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety, Fujian Agriculture and Forestry University, Fuzhou 350002, China.,State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| |
Collapse
|