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Ahsan SM, Injamum-Ul-Hoque M, Das AK, Rahman MM, Mollah MMI, Paul NC, Choi HW. Plant-Entomopathogenic Fungi Interaction: Recent Progress and Future Prospects on Endophytism-Mediated Growth Promotion and Biocontrol. PLANTS (BASEL, SWITZERLAND) 2024; 13:1420. [PMID: 38794490 PMCID: PMC11124879 DOI: 10.3390/plants13101420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024]
Abstract
Entomopathogenic fungi, often acknowledged primarily for their insecticidal properties, fulfill diverse roles within ecosystems. These roles encompass endophytism, antagonism against plant diseases, promotion of the growth of plants, and inhabitation of the rhizosphere, occurring both naturally and upon artificial inoculation, as substantiated by a growing body of contemporary research. Numerous studies have highlighted the beneficial aspects of endophytic colonization. This review aims to systematically organize information concerning the direct (nutrient acquisition and production of phytohormones) and indirect (resistance induction, antibiotic and secondary metabolite production, siderophore production, and mitigation of abiotic and biotic stresses) implications of endophytic colonization. Furthermore, a thorough discussion of these mechanisms is provided. Several challenges, including isolation complexities, classification of novel strains, and the impact of terrestrial location, vegetation type, and anthropogenic reluctance to use fungal entomopathogens, have been recognized as hurdles. However, recent advancements in biotechnology within microbial research hold promising solutions to many of these challenges. Ultimately, the current constraints delineate potential future avenues for leveraging endophytic fungal entomopathogens as dual microbial control agents.
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Affiliation(s)
- S. M. Ahsan
- Department of Plant Medicals, Andong National University, Andong 36729, Republic of Korea;
| | - Md. Injamum-Ul-Hoque
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (M.I.-U.-H.); (A.K.D.)
| | - Ashim Kumar Das
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (M.I.-U.-H.); (A.K.D.)
| | - Md. Mezanur Rahman
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA;
| | - Md. Mahi Imam Mollah
- Department of Entomology, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh;
| | - Narayan Chandra Paul
- Kumho Life Science Laboratory, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Hyong Woo Choi
- Department of Plant Medicals, Andong National University, Andong 36729, Republic of Korea;
- Institute of Cannabis Biotechnology, Andong National University, Andong 36729, Republic of Korea
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Calleros-González P, Ibarra-Juarez A, Lamelas A, Suárez-Moo P. How host species and body part determine the microbial communities of five ambrosia beetle species. Int Microbiol 2024:10.1007/s10123-024-00502-0. [PMID: 38489098 DOI: 10.1007/s10123-024-00502-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/23/2024] [Accepted: 03/07/2024] [Indexed: 03/17/2024]
Abstract
The ambrosia beetles are farming insects that feed mainly on their cultivated fungi, which in some occasions are pathogens from forest and fruit trees. We used a culture-independent approach based on 16S and 18S rRNA gene metabarcoding analysis to investigate the diversity and composition of the bacterial and fungal communities associated with five ambrosia beetle species: four species native to America (Monarthrum dimidiatum, Dryocoetoides capucinus, Euwallacea discretus, Corthylus consimilis) and an introduced species (Xylosandrus morigerus). For the bacterial community, the beetle species hosted a broad diversity with 1,579 amplicon sequence variants (ASVs) and 66 genera, while for the fungal community they hosted 288 ASVs and 39 genera. Some microbial groups dominated the community within a host species or a body part (Wolbachia in the head-thorax of E. discretus; Ambrosiella in the head-thorax and abdomen of X. morigerus). The taxonomic composition and structure of the microbial communities appeared to differ between beetle species; this was supported by beta-diversity analysis, which indicated that bacterial and fungal communities were clustered mainly by host species. This study characterizes for the first time the microbial communities associated with unexplored ambrosia beetle species, as well as the factors that affect the composition and taxonomic diversity per se, contributing to the knowledge of the ambrosia beetle system.
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Affiliation(s)
| | - Arturo Ibarra-Juarez
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, C.P. 91070, México
- Investigador Por México - CONAHCyT. Instituto de Ecología, A. C., Carretera Antigua a Coatepec 351, Xalapa, C.P. 91070, México
| | - Araceli Lamelas
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, C.P. 91070, México.
| | - Pablo Suárez-Moo
- Facultad de Química, Unidad de Química-Sisal, Universidad Nacional Autónoma de México, Sisal, Yucatán, 97356, México.
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Pineda-Mendoza RM, Gutiérrez-Ávila JL, Salazar KF, Rivera-Orduña FN, Davis TS, Zúñiga G. Comparative metabarcoding and biodiversity of gut-associated fungal assemblages of Dendroctonus species (Curculionidae: Scolytinae). Front Microbiol 2024; 15:1360488. [PMID: 38525076 PMCID: PMC10959539 DOI: 10.3389/fmicb.2024.1360488] [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: 12/23/2023] [Accepted: 02/15/2024] [Indexed: 03/26/2024] Open
Abstract
The genus Dendroctonus is a Holarctic taxon composed of 21 nominal species; some of these species are well known in the world as disturbance agents of forest ecosystems. Under the bark of the host tree, these insects are involved in complex and dynamic associations with phoretic ectosymbiotic and endosymbiotic communities. Unlike filamentous fungi and bacteria, the ecological role of yeasts in the bark beetle holobiont is poorly understood, though yeasts were the first group to be recorded as microbial symbionts of these beetles. Our aim was characterize and compare the gut fungal assemblages associated to 14 species of Dendroctonus using the internal transcribed spacer 2 (ITS2) region. A total of 615,542 sequences were recovered yielding 248 fungal amplicon sequence variants (ASVs). The fungal diversity was represented by 4 phyla, 16 classes, 34 orders, 54 families, and 71 genera with different relative abundances among Dendroctonus species. The α-diversity consisted of 32 genera of yeasts and 39 genera of filamentous fungi. An analysis of β-diversity indicated differences in the composition of the gut fungal assemblages among bark beetle species, with differences in species and phylogenetic diversity. A common core mycobiome was recognized at the genus level, integrated mainly by Candida present in all bark beetles, Nakazawaea, Cladosporium, Ogataea, and Yamadazyma. The bipartite networks confirmed that these fungal genera showed a strong association between beetle species and dominant fungi, which are key to maintaining the structure and stability of the fungal community. The functional variation in the trophic structure was identified among libraries and species, with pathotroph-saprotroph-symbiotroph represented at the highest frequency, followed by saprotroph-symbiotroph, and saprotroph only. The overall network suggested that yeast and fungal ASVs in the gut of these beetles showed positive and negative associations among them. This study outlines a mycobiome associated with Dendroctonus nutrition and provides a starting point for future in vitro and omics approaches addressing potential ecological functions and interactions among fungal assemblages and beetle hosts.
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Affiliation(s)
- Rosa María Pineda-Mendoza
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Jorge Luis Gutiérrez-Ávila
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Kevin F. Salazar
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Flor N. Rivera-Orduña
- Laboratorio de Ecología Microbiana, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Thomas S. Davis
- Department of Forest and Rangeland Stewardship, Warner College of Natural Resources, Colorado State University, Fort Collins, CO, United States
| | - Gerardo Zúñiga
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
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Wang Z, Liu Y, Wang H, Roy A, Liu H, Han F, Zhang X, Lu Q. Genome and transcriptome of Ips nitidus provide insights into high-altitude hypoxia adaptation and symbiosis. iScience 2023; 26:107793. [PMID: 37731610 PMCID: PMC10507238 DOI: 10.1016/j.isci.2023.107793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/15/2023] [Accepted: 08/29/2023] [Indexed: 09/22/2023] Open
Abstract
Ips nitidus is a well-known conifer pest that has contributed significantly to spruce forest disturbance in the Qinghai-Tibet Plateau and seriously threatens the ecological balance of these areas. We report a chromosome-level genome of I. nitidus determined by PacBio and Hi-C technology. Phylogenetic inference showed that it diverged from the common ancestor of I. typographus ∼2.27 mya. Gene family expansion in I. nitidus was characterized by DNA damage repair and energy metabolism, which may facilitate adaptation to high-altitude hypoxia. Interestingly, differential gene expression analysis revealed upregulated genes associated with high-altitude hypoxia adaptation and downregulated genes associated with detoxification after feeding and tunneling in fungal symbiont Ophiostoma bicolor-colonized substrates. Our findings provide evidence of the potential adaptability of I. nitidus to conifer host, high-altitude hypoxia and insight into how fungal symbiont assist in this process. This study enhances our understanding of insect adaptation, symbiosis, and pest management.
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Affiliation(s)
- Zheng Wang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
- Shandong Research Center for Forestry Harmful Biological Control Engineering and Technology, College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
| | - Ya Liu
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
| | - Huimin Wang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
| | - Amit Roy
- Faculty of Forestry and Wood Sciences, EXTEMIT-K and EVA.4.0 Unit, Czech University of Life Sciences, Kamýcká 1176, Prague 6, 165 00 Suchdol, Czech Republic
| | - Huixiang Liu
- Shandong Research Center for Forestry Harmful Biological Control Engineering and Technology, College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
| | | | - Xingyao Zhang
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
| | - Quan Lu
- Key Laboratory of Forest Protection of National Forestry and Grassland Administration, Ecology and Nature Conservation Institute, Chinese Academy of Forestry, Beijing 100091, China
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Chakraborty A, Šobotník J, Votýpková K, Hradecký J, Stiblik P, Synek J, Bourguignon T, Baldrian P, Engel MS, Novotný V, Odriozola I, Větrovský T. Impact of Wood Age on Termite Microbial Assemblages. Appl Environ Microbiol 2023; 89:e0036123. [PMID: 37067424 PMCID: PMC10231148 DOI: 10.1128/aem.00361-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 03/25/2023] [Indexed: 04/18/2023] Open
Abstract
The decomposition of wood and detritus is challenging to most macroscopic organisms due to the recalcitrant nature of lignocellulose. Moreover, woody plants often protect themselves by synthesizing toxic or nocent compounds which infuse their tissues. Termites are essential wood decomposers in warmer terrestrial ecosystems and, as such, they have to cope with high concentrations of plant toxins in wood. In this paper, we evaluated the influence of wood age on the gut microbial (bacterial and fungal) communities associated with the termites Reticulitermes flavipes (Rhinotermitidae) (Kollar, 1837) and Microcerotermes biroi (Termitidae) (Desneux, 1905). We confirmed that the secondary metabolite concentration decreased with wood age. We identified a core microbial consortium maintained in the gut of R. flavipes and M. biroi and found that its diversity and composition were not altered by the wood age. Therefore, the concentration of secondary metabolites had no effect on the termite gut microbiome. We also found that both termite feeding activities and wood age affect the wood microbiome. Whether the increasing relative abundance of microbes with termite activities is beneficial to the termites is unknown and remains to be investigated. IMPORTANCE Termites can feed on wood thanks to their association with their gut microbes. However, the current understanding of termites as holobiont is limited. To our knowledge, no studies comprehensively reveal the influence of wood age on the termite-associated microbial assemblage. The wood of many tree species contains high concentrations of plant toxins that can vary with their age and may influence microbes. Here, we studied the impact of Norway spruce wood of varying ages and terpene concentrations on the microbial communities associated with the termites Reticulitermes flavipes (Rhinotermitidae) and Microcerotermes biroi (Termitidae). We performed a bacterial 16S rRNA and fungal ITS2 metabarcoding study to reveal the microbial communities associated with R. flavipes and M. biroi and their impact on shaping the wood microbiome. We noted that a stable core microbiome in the termites was unaltered by the feeding substrate, while termite activities influenced the wood microbiome, suggesting that plant secondary metabolites have negligible effects on the termite gut microbiome. Hence, our study shed new insights into the termite-associated microbial assemblage under the influence of varying amounts of terpene content in wood and provides a groundwork for future investigations for developing symbiont-mediated termite control measures.
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Affiliation(s)
- Amrita Chakraborty
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Jan Šobotník
- Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Kateřina Votýpková
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Jaromír Hradecký
- Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Petr Stiblik
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Jiří Synek
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Thomas Bourguignon
- Faculty of Tropical AgriSciences, Czech University of Life Sciences, Prague, Czech Republic
- Okinawa Institute of Science & Technology Graduate University, Okinawa, Japan
| | - Petr Baldrian
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Michael S. Engel
- American Museum of Natural History, New York, New York, USA
- Division of Entomology, Natural History Museum, University of Kansas, Lawrence, Kansas, USA
- Department of Ecology & Evolutionary Biology, University of Kansas, Lawrence, Kansas, USA
| | - Vojtěch Novotný
- Faculty of Science, University of South Bohemia, Ceske Budejovice, Czech Republic
- Biology Centre of the Czech Academy of Sciences, Institute of Entomology, Ceske Budejovice, Czech Republic
| | - Iñaki Odriozola
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Tomáš Větrovský
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czech Republic
- Institute of Microbiology, Czech Academy of Sciences, Prague, Czech Republic
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Davis TS, Stewart JE, Clark C, Van Buiten C. Nutritional Profile and Ecological Interactions of Yeast Symbionts Associated with North American Spruce Beetle (Dendroctonus rufipennis). MICROBIAL ECOLOGY 2022:10.1007/s00248-022-02158-7. [PMID: 36542127 DOI: 10.1007/s00248-022-02158-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
To better understand functional ecology of bark beetle-microbial symbioses, we characterized yeast associates of North American spruce beetle (Dendroctous rufipennis Kirby) across populations. Seven yeast species were detected; Wickerhamomyces canadensis (Wickerham) Kurtzman et al. (Sachharomycetales: Saccharomycetaceae) was the most common (74% of isolates) and found in all populations. Isolates of W. canadensis were subsequently tested for competitive interactions with symbiotic (Leptographium abietinum, = Grosmannia abietina) and pathogenic (Beauvaria bassiana) filamentous fungi, and isolates were nutritionally profiled (protein and P content). Exposure to yeast headspace emissions had isolate-dependent effects on colony growth of symbiotic and pathogenic fungi; most isolates of W. canadensis slightly inhibited growth rates of symbiotic (L. abietinum, mean effect: - 4%) and entomopathogenic (B. bassiana, mean effect: - 6%) fungi. However, overall variation was high (range: - 35.4 to + 88.6%) and some yeasts enhanced growth of filamentous fungi whereas others were consistently inhibitory. The volatile 2-phenylethanol was produced by W. canadensis and synthetic 2-phenylethanol reduced growth rates of both L. abietinum and B. bassiana by 36% on average. Mean protein and P content of Wickerhamomyces canadensis cultures were 0.8% and 7.2%, respectively, but isolates varied in nutritional content and protein content was similar to that of host tree phloem. We conclude that W. canadensis is a primary yeast symbiont of D. rufipennis in the Rocky Mountains and emits volatiles that can affect growth of associated microbes. Wickerhamomyces canadensis isolates vary substantially in limiting nutrients (protein and P), but concentrations are less than reported for the symbiotic filamentous fungus L. abietinum.
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Affiliation(s)
- Thomas S Davis
- Forest & Rangeland Stewardship, Warner College of Natural Resources, Colorado State University, Fort Collins, USA.
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, USA.
| | - Jane E Stewart
- Graduate Degree Program in Ecology, Colorado State University, Fort Collins, USA
- Agricultural Biology, College of Agricultural Sciences, Colorado State University, Fort Collins, USA
| | - Caitlin Clark
- Food Science and Human Nutrition, College of Health and Human Sciences, Colorado State University, Fort Collins, USA
| | - Charlene Van Buiten
- Food Science and Human Nutrition, College of Health and Human Sciences, Colorado State University, Fort Collins, USA
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Vazquez-Ortiz K, Pineda-Mendoza RM, González-Escobedo R, Davis TS, Salazar KF, Rivera-Orduña FN, Zúñiga G. Metabarcoding of mycetangia from the Dendroctonus frontalis species complex (Curculionidae: Scolytinae) reveals diverse and functionally redundant fungal assemblages. Front Microbiol 2022; 13:969230. [PMID: 36187976 PMCID: PMC9524821 DOI: 10.3389/fmicb.2022.969230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/18/2022] [Indexed: 11/13/2022] Open
Abstract
Dendroctonus-bark beetles are associated with microbes that can detoxify terpenes, degrade complex molecules, supplement and recycle nutrients, fix nitrogen, produce semiochemicals, and regulate ecological interactions between microbes. Females of some Dendroctonus species harbor microbes in specialized organs called mycetangia; yet little is known about the microbial diversity contained in these structures. Here, we use metabarcoding to characterize mycetangial fungi from beetle species in the Dendroctonus frontalis complex, and analyze variation in biodiversity of microbial assemblages between beetle species. Overall fungal diversity was represented by 4 phyla, 13 classes, 25 orders, 39 families, and 48 genera, including 33 filamentous fungi, and 15 yeasts. The most abundant genera were Entomocorticium, Candida, Ophiostoma-Sporothrix, Ogataea, Nakazawaea, Yamadazyma, Ceratocystiopsis, Grosmannia-Leptographium, Absidia, and Cyberlindnera. Analysis of α-diversity indicated that fungal assemblages of D. vitei showed the highest richness and diversity, whereas those associated with D. brevicomis and D. barberi had the lowest richness and diversity, respectively. Analysis of β-diversity showed clear differentiation in the assemblages associated with D. adjunctus, D. barberi, and D. brevicomis, but not between closely related species, including D. frontalis and D. mesoamericanus and D. mexicanus and D. vitei. A core mycobiome was not statistically identified; however, the genus Ceratocystiopsis was shared among seven beetle species. Interpretation of a tanglegram suggests evolutionary congruence between fungal assemblages and species of the D. frontalis complex. The presence of different amplicon sequence variants (ASVs) of the same genus in assemblages from species of the D. frontalis complex outlines the complexity of molecular networks, with the most complex assemblages identified from D. vitei, D. mesoamericanus, D. adjunctus, and D. frontalis. Analysis of functional variation of fungal assemblages indicated multiple trophic groupings, symbiotroph/saprotroph guilds represented with the highest frequency (∼31% of identified genera). These findings improve our knowledge about the diversity of mycetangial communities in species of the D. frontalis complex and suggest that minimal apparently specific assemblages are maintained and regulated within mycetangia.
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Affiliation(s)
- Karina Vazquez-Ortiz
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Rosa María Pineda-Mendoza
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Román González-Escobedo
- Laboratorio de Microbiología, Facultad de Zootecnia y Ecología, Universidad Autónoma de Chihuahua, Chihuahua, Mexico
| | - Thomas S. Davis
- Department of Forest and Rangeland Stewardship, Warner College of Natural Resources, Colorado State University, Fort Collins, CO, United States
| | - Kevin F. Salazar
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
| | - Flor N. Rivera-Orduña
- Laboratorio de Ecología Microbiana, Departamento de Microbiología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
- *Correspondence: Flor N. Rivera-Orduña,
| | - Gerardo Zúñiga
- Laboratorio de Variación Biológica y Evolución, Departamento de Zoología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City, Mexico
- Gerardo Zúñiga,
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Thube SH, Pandian RTP, Josephrajkumar A, Bhavishya A, Nirmal Kumar BJ, Firake DM, Shah V, Madhu TN, Ruzzier E. Xylosandrus crassiusculus (Motschulsky) on Cocoa Pods ( Theobroma cacao L.): Matter of Bugs and Fungi. INSECTS 2022; 13:809. [PMID: 36135510 PMCID: PMC9506327 DOI: 10.3390/insects13090809] [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: 07/12/2022] [Revised: 08/30/2022] [Accepted: 09/01/2022] [Indexed: 06/16/2023]
Abstract
Exudation of mucilage from pinhead-sized boreholes in cocoa pods was recorded in Karnataka, India, during 2021. Further investigations showed the association of scolytine beetles with infested pods. The identity of the pest, Xylosandrus crassiusculus, was confirmed through morphological characterization and sequencing of the mitochondrial COI gene. We studied the predisposing factors for its infestation, visible and concealed damaging symptoms, and fungal symbionts. In addition to its well-known symbiotic fungus, Ambrosiella roeperi, a new association of yeast, Ambrosiozyma monospora, was discovered. We also traced the possible role of the mirid bug, Helopeltis theivora, in host selection by X. crassiusculus. Overall results indicated that a 'mirid bug-ambrosia beetle-pathogen complex' is responsible for the severe damage to cocoa pods in South India.
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Affiliation(s)
- Shivaji Hausrao Thube
- ICAR—Central Plantation Crops Research Institute, Regional Station, Vittal 574243, Karnataka, India
- ICAR—Central Institute for Cotton Research, Nagpur 440010, Maharashtra, India
| | - R. Thava Prakasa Pandian
- ICAR—Central Plantation Crops Research Institute, Regional Station, Vittal 574243, Karnataka, India
| | - Arulappan Josephrajkumar
- ICAR—Central Plantation Crops Research Institute, Regional Station, Kayamkulam 690533, Kerala, India
| | - Anthara Bhavishya
- ICAR—Central Plantation Crops Research Institute, Regional Station, Vittal 574243, Karnataka, India
| | - B. J. Nirmal Kumar
- ICAR—Central Plantation Crops Research Institute, Regional Station, Vittal 574243, Karnataka, India
| | | | - Vivek Shah
- ICAR—Central Institute for Cotton Research, Nagpur 440010, Maharashtra, India
| | - T. N. Madhu
- ICAR—Central Institute for Cotton Research, Nagpur 440010, Maharashtra, India
| | - Enrico Ruzzier
- World Biodiversity Association Onlus, c/o Museo Civico di Storia Naturale Lungadige, Porta Vittoria 9, 37129 Verona, Italy
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Asmus JJ, Toplis B, Roets F, Botha A. Predicting interactions of the frass-associated yeast Hyphopichia heimii with Olea europaea subsp. cuspidata and twig-boring bark beetles. Folia Microbiol (Praha) 2022; 67:899-911. [PMID: 35767213 DOI: 10.1007/s12223-022-00985-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 06/17/2022] [Indexed: 11/29/2022]
Abstract
Bark beetles are destructive insect pests known to form symbioses with different fungal taxa, including yeasts. The aim of this study was to (1) determine the prevalence of the rare yeast Hyphopichia heimii in bark beetle frass from wild olive trees in South Africa and to (2) predict the potential interaction of this yeast with trees and bark beetles. Twenty-eight culturable yeast species were isolated from frass in 35 bark beetle galleries, including representatives of H. heimii from nine samples. Physiological characterization of H. heimii isolates revealed that none was able to degrade complex polymers present in hemicellulose; however, all were able to assimilate sucrose and cellobiose, sugars associated with an arboreal habitat. All isolates were able to produce the auxin indole acetic acid, indicative of a potential symbiosis with the tree. Sterol analysis revealed that the isolates possessed ergosterol quantities ranging from 3.644 ± 0.119 to 13.920 ± 1.230 mg/g dry cell weight, which suggested that H. heimii could serve as a source of sterols in bark beetle diets, as is known for other bark beetle-associated fungi. In addition, gas chromatography-mass spectrometry demonstrated that at least one of the isolates, Hyphopichia heimii CAB 1614, was able to convert the insect pheromone cis-verbenol to the anti-aggregation pheromone verbenone. This indicated that H. heimii could potentially influence beetle behaviour. These results support the contention of a tripartite symbiosis between H. heimii, olive trees, and bark beetles.
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Affiliation(s)
- Justin J Asmus
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa
| | - Barbra Toplis
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa
| | - Francois Roets
- Department of Conservation Ecology and Entomology, Stellenbosch University, Stellenbosch, 7602, South Africa
| | - Alfred Botha
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa.
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10
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Bizarria R, Pagnocca FC, Rodrigues A. Yeasts in the attine ant-fungus mutualism: Diversity, functional roles, and putative biotechnological applications. Yeast 2021; 39:25-39. [PMID: 34473375 DOI: 10.1002/yea.3667] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/20/2021] [Accepted: 08/30/2021] [Indexed: 01/01/2023] Open
Abstract
Insects interact with a wide variety of yeasts, often providing a suitable substrate for their growth. Some yeast-insect interactions are tractable models for understanding the relationships between the symbionts. Attine ants are prominent insects in the Neotropics and have performed an ancient fungiculture of mutualistic basidiomycete fungi for more than 55-65 million years. Yeasts gain access to this sophisticated mutualism, prompting diversity, ecological, and biotechnological studies in this environment. We review half a century research in this field, surveying for recurrent yeast taxa and their putative ecological roles in this environment. We found that previous studies mainly covered the yeast diversity from a small fraction of attine ants, being Saccharomycetales, Tremellales, and Trichosporonales as the most frequent yeast or yeast-like orders found. Apiotrichum, Aureobasidium, Candida, Cutaneotrichosporon, Debaryomyces, Meyerozyma, Papiliotrema, Rhodotorula, Trichomonascus, and Trichosporon are the most frequent recovered genera. On the other hand, studies of yeasts' ecological roles on attine ant-fungus mutualism only tapped the tip of the iceberg. Previous established hypotheses in the literature cover the production of lignocellulosic enzymes, chemical detoxification, and fungus garden protection. Some of these roles have parallels in biotechnological processes. In conclusion, the attine ant environment has a hidden potential for studying yeast biodiversity, ecology, and biotechnology, which has been particularly unexplored considering the vast diversity of fungus-growing ants.
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Affiliation(s)
- Rodolfo Bizarria
- Center for the Study of Social Insects, São Paulo State University (UNESP), Rio Claro, Brazil.,Department of General and Applied Biology, São Paulo State University (UNESP), Rio Claro, Brazil
| | | | - Andre Rodrigues
- Center for the Study of Social Insects, São Paulo State University (UNESP), Rio Claro, Brazil.,Department of General and Applied Biology, São Paulo State University (UNESP), Rio Claro, Brazil
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11
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Mann AJ, Davis TS. Entomopathogenic fungi to control bark beetles: a review of ecological recommendations. PEST MANAGEMENT SCIENCE 2021; 77:3841-3846. [PMID: 33728813 DOI: 10.1002/ps.6364] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 03/06/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
There is considerable interest in applying entomopathogenic fungi as a biological control to limit insect populations due to their low environmental and human applicator impacts. However, despite many promising laboratory tests, there are few examples where these fungi were successfully applied to manage bark beetles. Here, we explore how environmental conditions unique to bark beetle habitats may have limited previous entomopathogenic fungus applications, including variable temperatures, ultraviolet light, bark beetle symbiotic microorganisms, tree phytochemicals, and cryptic bark beetle behaviors. Based on the existing literature, we provide a framework for interpreting the pathogenicity of entomopathogenic fungi to bark beetles, with emphasis on both standardizing and improving laboratory approaches to enhance field applications. Our synthesis indicates that most previous laboratory evaluations are conducted under conditions that are not representative of actual bark beetle systems; this may render fungal isolates functionally non-pathogenic in field settings. We recommend that future studies place particular effort into understanding entomopathogen response to the presence of bark beetle symbiotic microorganisms, plant phytochemicals, and potential as a tree endophyte. Additionally, field application methods should aid entomopathogens in overcoming stressful conditions and allow the fungus to infect multiple bark beetle life stages. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Andrew J Mann
- Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, CO, USA
| | - Thomas S Davis
- Department of Forest and Rangeland Stewardship, Colorado State University, Fort Collins, CO, USA
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12
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Mankowski ME, Morrell JJ, Lebow PK. Effects on Brood Development in the Carpenter Ant Camponotus vicinus Mayr after Exposure to the Yeast Associate Schwanniomyces polymorphus Kloecker. INSECTS 2021; 12:520. [PMID: 34199749 PMCID: PMC8229963 DOI: 10.3390/insects12060520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 12/03/2022]
Abstract
The yeast Schwanniomyces polymorphus is associated with the infrabuccal pocket in the carpenter ant Camponotus vicinus (Hymenoptera: Formicidae), but its role in ant development is poorly defined. The potential effects of this yeast on brood development were examined on sets of larval groups and workers over a 12 week period. Worker-larval sets were fed variations of a completely artificial, holidic diet and exposed or not exposed to live S. polymorphus. Worker-larval sets in half of the experiment were defaunated using a two-step heat and chemical process. Brood development and number of adult ants produced were significantly affected by the heat/chemical defaunation process. Compared to worker-larval groups fed a basal, complete diet, all treatments resulted in no or deleterious larval development. Brood weights and number of worker ants produced from the original larval sets at initiation were significantly higher in non-defaunated ant groups fed a diet lacking both B vitamins and cholesterol and exposed to live S. polymorphus. We propose that this yeast may help ants to more efficiently assimilate nutrients when fed nutrient-deficient diets, particularly those deficient in sterols.
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Affiliation(s)
- Mark E. Mankowski
- Forest Products Laboratory Starkville, USDA Forest Service, Starkville, MS 39759, USA
| | - Jeffrey J. Morrell
- Centre Timber Durability and Design Life, University of the Sunshine Coast, Sippy Downs, QLD 4102, Australia;
| | - Patricia K. Lebow
- Forest Products Laboratory Madison, USDA Forest Service, Madison, WI 53726, USA;
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13
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Cappelli A, Favia G, Ricci I. Wickerhamomyces anomalus in Mosquitoes: A Promising Yeast-Based Tool for the "Symbiotic Control" of Mosquito-Borne Diseases. Front Microbiol 2021; 11:621605. [PMID: 33552032 PMCID: PMC7859090 DOI: 10.3389/fmicb.2020.621605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022] Open
Abstract
The ascomycete yeast Wickerhamomyces anomalus is a mutualistic symbiont of different insects, including diptera vectors of diseases. Although fungal symbioses have been so far poorly characterized, the topic is gaining attention as yeast-insect interactions can provide pivotal information on insect biology, such as their environmental adaptation or vectorial capability. We review the symbiosis between W. anomalus and mosquitoes, which implies nutritional and protective functions. Furthermore, we focus on antiplasmodial effects of W. anomalus in malaria vectors and discuss the yeast potential for the “symbiotic control” (SC) of mosquito-borne diseases (MBDs).
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Affiliation(s)
- Alessia Cappelli
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Camerino, Italy
| | - Guido Favia
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Camerino, Italy
| | - Irene Ricci
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Camerino, Italy
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14
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Ibarra-Juarez LA, Burton MAJ, Biedermann PHW, Cruz L, Desgarennes D, Ibarra-Laclette E, Latorre A, Alonso-Sánchez A, Villafan E, Hanako-Rosas G, López L, Vázquez-Rosas-Landa M, Carrion G, Carrillo D, Moya A, Lamelas A. Evidence for Succession and Putative Metabolic Roles of Fungi and Bacteria in the Farming Mutualism of the Ambrosia Beetle Xyleborus affinis. mSystems 2020; 5:e00541-20. [PMID: 32934115 PMCID: PMC7498683 DOI: 10.1128/msystems.00541-20] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
Abstract
The bacterial and fungal community involved in ambrosia beetle fungiculture remains poorly studied compared to the famous fungus-farming ants and termites. Here we studied microbial community dynamics of laboratory nests, adults, and brood during the life cycle of the sugarcane shot hole borer, Xyleborus affinis We identified a total of 40 fungal and 428 bacterial operational taxonomic units (OTUs), from which only five fungi (a Raffaelea fungus and four ascomycete yeasts) and four bacterial genera (Stenotrophomonas, Enterobacter, Burkholderia, and Ochrobactrum) can be considered the core community playing the most relevant symbiotic role. Both the fungal and bacterial populations varied significantly during the beetle's life cycle. While the ascomycete yeasts were the main colonizers of the gallery early on, the Raffaelea and other filamentous fungi appeared after day 10, at the time when larval hatching happened. Regarding bacteria, Stenotrophomonas and Enterobacter dominated overall but decreased in foundresses and brood with age. Finally, inferred analyses of the putative metabolic capabilities of the bacterial microbiome revealed that they are involved in (i) degradation of fungal and plant polymers, (ii) fixation of atmospheric nitrogen, and (iii) essential amino acid, cofactor, and vitamin provisioning. Overall, our results suggest that yeasts and bacteria are more strongly involved in supporting the beetle-fungus farming symbiosis than previously thought.IMPORTANCE Ambrosia beetles farm their own food fungi within tunnel systems in wood and are among the three insect lineages performing agriculture (the others are fungus-farming ants and termites). In ambrosia beetles, primary ambrosia fungus cultivars have been regarded essential, whereas other microbes have been more or less ignored. Our KEGG analyses suggest so far unknown roles of yeasts and bacterial symbionts, by preparing the tunnel walls for the primary ambrosia fungi. This preparation includes enzymatic degradation of wood, essential amino acid production, and nitrogen fixation. The latter is especially exciting because if it turns out to be present in vivo in ambrosia beetles, all farming animals (including humans) are dependent on atmospheric nitrogen fertilization of their crops. As previous internal transcribed spacer (ITS) metabarcoding approaches failed on covering the primary ambrosia fungi, our 18S metabarcoding approach can also serve as a template for future studies on the ambrosia beetle-fungus symbiosis.
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Affiliation(s)
- L A Ibarra-Juarez
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - M A J Burton
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - P H W Biedermann
- Chair of Forest Entomology and Protection, University of Freiburg, Freiburg, Germany
| | - L Cruz
- Tropical Research and Education Center, University of Florida, Homestead, Florida, USA
| | - D Desgarennes
- Red de Biodiversidad y Sistemática, Instituto de Ecología A. C., Xalapa, México
| | - E Ibarra-Laclette
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - A Latorre
- Institute for Integrative Systems Biology (Universitat de València and CSIC), València, Spain
- Foundation for the Promotion of Sanitary and Biomedical Research in the Valencian Community (FISABIO), València, Spain
| | - A Alonso-Sánchez
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - E Villafan
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - G Hanako-Rosas
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | - L López
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
| | | | - G Carrion
- Red de Biodiversidad y Sistemática, Instituto de Ecología A. C., Xalapa, México
| | - D Carrillo
- Red de Biodiversidad y Sistemática, Instituto de Ecología A. C., Xalapa, México
| | - A Moya
- Institute for Integrative Systems Biology (Universitat de València and CSIC), València, Spain
- Foundation for the Promotion of Sanitary and Biomedical Research in the Valencian Community (FISABIO), València, Spain
| | - A Lamelas
- Red de Estudios Moleculares Avanzados, Instituto de Ecología A. C., Xalapa, México
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15
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Chakraborty A, Modlinger R, Ashraf MZ, Synek J, Schlyter F, Roy A. Core Mycobiome and Their Ecological Relevance in the Gut of Five Ips Bark Beetles (Coleoptera: Curculionidae: Scolytinae). Front Microbiol 2020; 11:568853. [PMID: 33013799 PMCID: PMC7496905 DOI: 10.3389/fmicb.2020.568853] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/12/2020] [Indexed: 12/14/2022] Open
Abstract
Bark beetles are destructive forest pests considering their remarkable contribution to forest depletion. Their association with fungi is useful against the challenges of survival on the noxious and nutritionally limited substrate, i.e., conifer tissues. Fungal symbionts help the beetles in nutrient acquisition and detoxification of toxic tree secondary metabolites. Although gut is the prime location for food digestion and detoxification, limited information is available on gut-mycobiome of bark beetles. The present study screened the gut-mycobiont from six bark beetles (five Ips and one non-Ips) from Scolytinae subfamily using high-throughput sequencing and explored their putative role in symbiosis with the host insect. Results revealed the predominance of four fungal classes- Sordariomycetes, Saccharomycetes, Eurothiomycetes, and Dothidomycetes in all bark beetles. Apart from these, Agaricomycetes, Leothiomycetes, Incertae sedis Basidiomycota, Tremellomycetes, Lecanoromycetes, and Microbotryomycetes were also documented in different beetles. Five Ips bark beetles share a consortium of core fungal communities in their gut tissues consisting of 47 operational taxonomic units (OTUs) belonging to 19 fungal genera. The majority of these core fungal genera belong to the phylum Ascomycota. LEfSe analysis revealed a set of species-specific fungal biomarkers in bark beetles. The present study identified the gut mycobiont assemblage in bark beetles and their putative ecological relevance. An enriched understanding of bark beetle-fungal symbiosis is not only filling the existing knowledge gap in the field but may also unleash an unforeseen potential for future bark beetle management.
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Affiliation(s)
- Amrita Chakraborty
- EVA 4.0 Unit, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Roman Modlinger
- Excellent Team for Mitigation, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Muhammad Zubair Ashraf
- Excellent Team for Mitigation, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Jiří Synek
- Excellent Team for Mitigation, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
| | - Fredrik Schlyter
- Excellent Team for Mitigation, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia.,Department of Plant Protection Biology, Swedish University of Agricultural Sciences, Alnarp, Sweden
| | - Amit Roy
- Excellent Team for Mitigation, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague, Czechia
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16
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Noman A, Aqeel M, Qasim M, Haider I, Lou Y. Plant-insect-microbe interaction: A love triangle between enemies in ecosystem. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134181. [PMID: 31520944 DOI: 10.1016/j.scitotenv.2019.134181] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/28/2019] [Accepted: 08/28/2019] [Indexed: 05/20/2023]
Abstract
In natural ecosystems, plants interact with biotic components such as microbes, insects, animals and other plants as well. Generally, researchers have focused on each interaction separately, which condenses the significance of the interaction. This limited presentation of the facts masks the collective role of constantly interacting organisms in complex communities disturbing not only plant responses but also the response of organisms for each other in natural ecological settings. Beneficial microorganisms interact with insect herbivores, their predators and pollinators in a bidirectional way through the plant. Fascinatingly, insects employ diverse tactics to protect themselves from parasites or predators. Influences of microbial and insects attack on plants can bring changes in info-chemical frameworks and play a role in the food chain also. After insect herbivory and microbial pathogenesis, plants exhibit intense morpho-physiological and chemical reprogramming that leads to repellence/attraction of attacking organism or its natural enemy. The characterization of such interactions in different ecosystems is receiving due consideration, and underlying molecular and physiological mechanisms must be the point of concentration to unveil the evolution of multifaceted multitrophic interactions. Therefore, we have focused this phenomenon in a more realistic setting by integrating ecology and physiology to portray these multidimensional interfaces. We have shown, in this article, physiological trajectories in plant-microbe and insect relationship and their ecological relevance in nature. We focus and discuss microbial pathogenesis in plants, induced defense and the corresponding behavior of herbivore insects and vice-versa. It is hoped that this review will stimulate interest and zeal in microbes mediated plant-insect interactions along with their ecological consequences and encourage scientists to accept the challenges in this field.
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Affiliation(s)
- Ali Noman
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China; Department of Botany, Government College University, Faisalabad 38040, Pakistan.
| | - Muhammad Aqeel
- State Key Laboratory of Grassland Agro-ecosystems, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, PR China
| | - Muhammad Qasim
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China
| | - Ijaz Haider
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China; Department of Entomology, University of Agriculture, Faisalabad 38040, Pakistan
| | - Yonggen Lou
- Institute of Insect Sciences, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, PR China.
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17
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Miller KE, Inward DJG, Gomez-Rodriguez C, Baselga A, Vogler AP. Predicting the unpredictable: How host specific is the mycobiota of bark and ambrosia beetles? FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2019.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Durand AA, Constant P, Déziel E, Guertin C. The symbiotic complex of Dendroctonus simplex: implications in the beetle attack and its life cycle. BULLETIN OF ENTOMOLOGICAL RESEARCH 2019; 109:723-732. [PMID: 30806338 DOI: 10.1017/s0007485319000051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The eastern larch beetle (Dendroctonus simplex Le Conte) is recognized as a serious destructive forest pest in the upper part of North America. Under epidemic conditions, this beetle can attack healthy trees, causing severe damages to larch stands. Dendroctonus species are considered as holobionts, as they engage in multipartite interactions with microorganisms, such as bacteria, filamentous fungi, and yeasts, which are implicated in physiological processes of the insect, such as nutrition. They also play a key role in the beetle's attack, as they are responsible for the detoxification of the subcortical environment and weaken the tree's defense mechanisms. The eastern larch beetle is associated with bacteria and fungi, but their implication in the success of the beetle remains unknown. Here, we investigated the bacterial and fungal microbiota of this beetle pest throughout its ontogeny (pioneer adults, larvae and pupae) by high-throughput sequencing. A successional microbial assemblage was identified throughout the beetle developmental stages, reflecting the beetle's requirements. These results indicate that a symbiotic association between the eastern larch beetle and some of these microorganisms takes place and that this D. simplex symbiotic complex is helping the insect to colonize its host tree and survive the conditions encountered.
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Affiliation(s)
- A-A Durand
- INRS-Institut Armand Frappier, 531 Boul. Des Prairies, Laval, Québec, Canada, H7V 1B7
| | - P Constant
- INRS-Institut Armand Frappier, 531 Boul. Des Prairies, Laval, Québec, Canada, H7V 1B7
| | - E Déziel
- INRS-Institut Armand Frappier, 531 Boul. Des Prairies, Laval, Québec, Canada, H7V 1B7
| | - C Guertin
- INRS-Institut Armand Frappier, 531 Boul. Des Prairies, Laval, Québec, Canada, H7V 1B7
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19
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Xyleborus volvulus (Coleoptera: Curculionidae): Biology and Fungal Associates. Appl Environ Microbiol 2019; 85:AEM.01190-19. [PMID: 31375485 DOI: 10.1128/aem.01190-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 07/23/2019] [Indexed: 11/20/2022] Open
Abstract
The ambrosia beetle Xyleborus volvulus Fabricius has been reported as a potential vector of the plant pathogen Raffaelea lauricola T.C. Harr., Fraedrich & Aghayeva that is affecting avocado orchards in South Florida. In this study, we examined its life cycle, process of gallery formation, gallery structure, and fungal associates by rearing one generation on avocado sawdust medium under control conditions. The adult foundress excavated a vertical tunnel that constituted the main gallery with a length of 2.5 cm, followed by the construction of up to six secondary galleries with a total length of 4.4 cm. The time period for one generation (egg to adult) was 28 days. Teneral males emerged 3 days after the emergence of the first females. The F1 generation did not significantly contribute to gallery expansion. Four species of Raffaelea and nine yeast species were recovered from galleries and beetles. Raffaelea arxii and Candida berthetii were the most frequent symbionts recovered from new adults and galleries. Candida berthetii dominated during the early stages of the gallery development, whereas R. arxii was most frequent in later stages. Other Raffaelea species were inconsistently isolated from galleries, which suggests a strong association between Xyleborus volvulus and both R. arxii and C. berthetii These results suggest that R. arxii is the primary nutritional symbiont of X. volvulus and that yeast species may be pioneer colonizers that assist with the growth of fungal symbionts.IMPORTANCE Ambrosia beetles cultivate fungi in tunnels bored into weakened host trees. This obligate interaction is required for their survival as beetles feed on these symbiotic fungi, and the fungi benefit from transportation by the beetles. Xyleborus volvulus carries many nonpathogenic symbionts; however, recently the acquisition of Raffaelea lauricola (the causal agent of a lethal vascular disease of lauraceous trees) by this beetle has altered its status from wood degrader to potential pest in avocado. We conducted a study to understand the relationship of this beetle and its fungal associates. Our results show that X. volvulus has a multipartite flexible association with different Raffaelea species. The lack of fidelity in the mutualistic association may explain the acquisition of R. lauricola Knowing the beetle biology and its mutualistic interactions furthers an understanding of the beetle's role as a potential vector and in disease transmission.
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20
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Hajek AE, Morris EE, Hendry TA. Context-dependent interactions of insects and defensive symbionts: insights from a novel system in siricid woodwasps. CURRENT OPINION IN INSECT SCIENCE 2019; 33:77-83. [PMID: 31358200 DOI: 10.1016/j.cois.2019.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 03/21/2019] [Accepted: 03/27/2019] [Indexed: 06/10/2023]
Abstract
Many insect species derive fitness benefits from associations with defensive microbial symbionts that confer protection against pathogens and parasites. These relationships are varied and diverse, but a number of studies highlight important trends. The effects of defensive symbionts can be context-dependent and influenced by variable selection imposed by the organism against which the symbiont protects. Additionally, genetic variation in both hosts and symbionts can greatly influence the outcome of these interactions. Here, we describe interactions between siricid woodwasps, their fungal symbionts and parasitic nematodes and show how defense by symbionts in this system is also context-dependent. The species or strain of the white rot fungus used as a symbiont by Sirex can influence parasitism of these hosts by Deladenus nematodes.
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Affiliation(s)
- Ann E Hajek
- Department of Entomology, Cornell University, Ithaca, NY 14853-2601, USA.
| | - Elizabeth Erin Morris
- Department of Biological Sciences, University of New Hampshire, Durham, NH 03823, USA
| | - Tory A Hendry
- Department of Microbiology, Cornell University, Ithaca, NY 14853, USA
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Crous P, Carnegie A, Wingfield M, Sharma R, Mughini G, Noordeloos M, Santini A, Shouche Y, Bezerra J, Dima B, Guarnaccia V, Imrefi I, Jurjević Ž, Knapp D, Kovács G, Magistà D, Perrone G, Rämä T, Rebriev Y, Shivas R, Singh S, Souza-Motta C, Thangavel R, Adhapure N, Alexandrova A, Alfenas A, Alfenas R, Alvarado P, Alves A, Andrade D, Andrade J, Barbosa R, Barili A, Barnes C, Baseia I, Bellanger JM, Berlanas C, Bessette A, Bessette A, Biketova A, Bomfim F, Brandrud T, Bransgrove K, Brito A, Cano-Lira J, Cantillo T, Cavalcanti A, Cheewangkoon R, Chikowski R, Conforto C, Cordeiro T, Craine J, Cruz R, Damm U, de Oliveira R, de Souza J, de Souza H, Dearnaley J, Dimitrov R, Dovana F, Erhard A, Esteve-Raventós F, Félix C, Ferisin G, Fernandes R, Ferreira R, Ferro L, Figueiredo C, Frank J, Freire K, García D, Gené J, Gêsiorska A, Gibertoni T, Gondra R, Gouliamova D, Gramaje D, Guard F, Gusmão L, Haitook S, Hirooka Y, Houbraken J, Hubka V, Inamdar A, Iturriaga T, Iturrieta-González I, Jadan M, Jiang N, Justo A, Kachalkin A, Kapitonov V, Karadelev M, Karakehian J, Kasuya T, Kautmanová I, Kruse J, Kušan I, Kuznetsova T, Landell M, Larsson KH, Lee H, Lima D, Lira C, Machado A, Madrid H, Magalhães O, Majerova H, Malysheva E, Mapperson R, Marbach P, Martín M, Martín-Sanz A, Matočec N, McTaggart A, Mello J, Melo R, Mešić A, Michereff S, Miller A, Minoshima A, Molinero-Ruiz L, Morozova O, Mosoh D, Nabe M, Naik R, Nara K, Nascimento S, Neves R, Olariaga I, Oliveira R, Oliveira T, Ono T, Ordoñez M, Ottoni ADM, Paiva L, Pancorbo F, Pant B, Pawłowska J, Peterson S, Raudabaugh D, Rodríguez-Andrade E, Rubio E, Rusevska K, Santiago A, Santos A, Santos C, Sazanova N, Shah S, Sharma J, Silva B, Siquier J, Sonawane M, Stchigel A, Svetasheva T, Tamakeaw N, Telleria M, Tiago P, Tian C, Tkalčec Z, Tomashevskaya M, Truong H, Vecherskii M, Visagie C, Vizzini A, Yilmaz N, Zmitrovich I, Zvyagina E, Boekhout T, Kehlet T, Læssøe T, Groenewald J. Fungal Planet description sheets: 868-950. PERSOONIA 2019; 42:291-473. [PMID: 31551622 PMCID: PMC6712538 DOI: 10.3767/persoonia.2019.42.11] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/10/2019] [Indexed: 12/11/2022]
Abstract
Novel species of fungi described in this study include those from various countries as follows: Australia, Chaetomella pseudocircinoseta and Coniella pseudodiospyri on Eucalyptus microcorys leaves, Cladophialophora eucalypti, Teratosphaeria dunnii and Vermiculariopsiella dunnii on Eucalyptus dunnii leaves, Cylindrium grande and Hypsotheca eucalyptorum on Eucalyptus grandis leaves, Elsinoe salignae on Eucalyptus saligna leaves, Marasmius lebeliae on litter of regenerating subtropical rainforest, Phialoseptomonium eucalypti (incl. Phialoseptomonium gen. nov.) on Eucalyptus grandis × camaldulensis leaves, Phlogicylindrium pawpawense on Eucalyptus tereticornis leaves, Phyllosticta longicauda as an endophyte from healthy Eustrephus latifolius leaves, Pseudosydowia eucalyptorum on Eucalyptus sp. leaves, Saitozyma wallum on Banksia aemula leaves, Teratosphaeria henryi on Corymbia henryi leaves. Brazil, Aspergillus bezerrae, Backusella azygospora, Mariannaea terricola and Talaromyces pernambucoensis from soil, Calonectria matogrossensis on Eucalyptus urophylla leaves, Calvatia brasiliensis on soil, Carcinomyces nordestinensis on Bromelia antiacantha leaves, Dendryphiella stromaticola on small branches of an unidentified plant, Nigrospora brasiliensis on Nopalea cochenillifera leaves, Penicillium alagoense as a leaf endophyte on a Miconia sp., Podosordaria nigrobrunnea on dung, Spegazzinia bromeliacearum as a leaf endophyte on Tilandsia catimbauensis, Xylobolus brasiliensis on decaying wood. Bulgaria, Kazachstania molopis from the gut of the beetle Molops piceus. Croatia, Mollisia endocrystallina from a fallen decorticated Picea abies tree trunk. Ecuador, Hygrocybe rodomaculata on soil. Hungary, Alfoldia vorosii (incl. Alfoldia gen. nov.) from Juniperus communis roots, Kiskunsagia ubrizsyi (incl. Kiskunsagia gen. nov.) from Fumana procumbens roots. India, Aureobasidium tremulum as laboratory contaminant, Leucosporidium himalayensis and Naganishia indica from windblown dust on glaciers. Italy, Neodevriesia cycadicola on Cycas sp. leaves, Pseudocercospora pseudomyrticola on Myrtus communis leaves, Ramularia pistaciae on Pistacia lentiscus leaves, Neognomoniopsis quercina (incl. Neognomoniopsis gen. nov.) on Quercus ilex leaves. Japan, Diaporthe fructicola on Passiflora edulis × P. edulis f. flavicarpa fruit, Entoloma nipponicum on leaf litter in a mixed Cryptomeria japonica and Acer spp. forest. Macedonia, Astraeus macedonicus on soil. Malaysia, Fusicladium eucalyptigenum on Eucalyptus sp. twigs, Neoacrodontiella eucalypti (incl. Neoacrodontiella gen. nov.) on Eucalyptus urophylla leaves. Mozambique, Meliola gorongosensis on dead Philenoptera violacea leaflets. Nepal, Coniochaeta dendrobiicola from Dendriobium lognicornu roots. New Zealand, Neodevriesia sexualis and Thozetella neonivea on Archontophoenix cunninghamiana leaves. Norway, Calophoma sandfjordenica from a piece of board on a rocky shoreline, Clavaria parvispora on soil, Didymella finnmarkica from a piece of Pinus sylvestris driftwood. Poland, Sugiyamaella trypani from soil. Portugal, Colletotrichum feijoicola from Acca sellowiana. Russia, Crepidotus tobolensis on Populus tremula debris, Entoloma ekaterinae, Entoloma erhardii and Suillus gastroflavus on soil, Nakazawaea ambrosiae from the galleries of Ips typographus under the bark of Picea abies. Slovenia, Pluteus ludwigii on twigs of broadleaved trees. South Africa, Anungitiomyces stellenboschiensis (incl. Anungitiomyces gen. nov.) and Niesslia stellenboschiana on Eucalyptus sp. leaves, Beltraniella pseudoportoricensis on Podocarpus falcatus leaf litter, Corynespora encephalarti on Encephalartos sp. leaves, Cytospora pavettae on Pavetta revoluta leaves, Helminthosporium erythrinicola on Erythrina humeana leaves, Helminthosporium syzygii on a Syzygium sp. bark canker, Libertasomyces aloeticus on Aloe sp. leaves, Penicillium lunae from Musa sp. fruit, Phyllosticta lauridiae on Lauridia tetragona leaves, Pseudotruncatella bolusanthi (incl. Pseudotruncatellaceae fam. nov.) and Dactylella bolusanthi on Bolusanthus speciosus leaves. Spain, Apenidiella foetida on submerged plant debris, Inocybe grammatoides on Quercus ilex subsp. ilex forest humus, Ossicaulis salomii on soil, Phialemonium guarroi from soil. Thailand, Pantospora chromolaenae on Chromolaena odorata leaves. Ukraine, Cadophora helianthi from Helianthus annuus stems. USA, Boletus pseudopinophilus on soil under slash pine, Botryotrichum foricae, Penicillium americanum and Penicillium minnesotense from air. Vietnam, Lycoperdon vietnamense on soil. Morphological and culture characteristics are supported by DNA barcodes.
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Affiliation(s)
- P.W. Crous
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
| | - A.J. Carnegie
- Forest Health & Biosecurity, NSW Department of Primary Industries, Forestry, Level 12, 10 Valentine Ave, Parramatta NSW 2150, Australia
| | - M.J. Wingfield
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
| | - R. Sharma
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, S.P. Pune University, Ganeshkhind, Pune 411 007, Maharashtra, India
| | - G. Mughini
- Research Center for Forestry and Wood - C.R.E.A., Via Valle della Quistione 27, 00166 Rome, Italy
| | - M.E. Noordeloos
- Naturalis Biodiversity Center, section Botany, P.O. Box 9517, 2300 RA Leiden, The Netherlands
| | - A. Santini
- Institute for Sustainable Plant Protection - C.N.R., Via Madonna del Piano 10, 50019 Sesto fiorentino (FI), Italy
| | - Y.S. Shouche
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, S.P. Pune University, Ganeshkhind, Pune 411 007, Maharashtra, India
| | - J.D.P. Bezerra
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - B. Dima
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - V. Guarnaccia
- DiSAFA, University of Torino, Largo Paolo Braccini, 2, 10095 Grugliasco, TO, Italy
| | - I. Imrefi
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - Ž. Jurjević
- EMSL Analytical, Inc., 200 Route 130 North, Cinnaminson, NJ 08077, USA
| | - D.G. Knapp
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - G.M. Kovács
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/C, Hungary
| | - D. Magistà
- Institute of Sciences of Food Production, CNR, Via Amendola 122/O, 70126 Bari, Italy
| | - G. Perrone
- Institute of Sciences of Food Production, CNR, Via Amendola 122/O, 70126 Bari, Italy
| | - T. Rämä
- Marbio, Norwegian College of Fishery Science, University of Tromsø - The Arctic University of Norway
| | - Y.A. Rebriev
- South Scientific Center of the Russian Academy of Sciences, Rostov-on-Don, Russia
| | - R.G. Shivas
- Centre for Crop Health, University of Southern Queensland, Toowoomba 4350, Australia
| | - S.M. Singh
- National Centre for Antarctic and Ocean Research, Headland Sada, Vasco-da-Gama-403 804, Goa, India
- Banaras Hindu University (BHU), Uttar Pradesh, India
| | - C.M. Souza-Motta
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - R. Thangavel
- Plant Health and Environment Laboratory, Ministry for Primary Industries, P.O. Box 2095, Auckland 1140, New Zealand
| | - N.N. Adhapure
- Department of Biotechnology and Microbiology, Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, Maharashtra, India
| | - A.V. Alexandrova
- Lomonosov Moscow State University (MSU), Faculty of Biology, 119234, 1, 12 Leninskie Gory Str., Moscow, Russia
- Joint Russian-Vietnamese Tropical Research and Technological Center, Hanoi, Vietnam
| | - A.C. Alfenas
- Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, Brazil
| | - R.F. Alfenas
- Departamento de Engenharia Florestal, Universidade Federal de Mato Grosso, Cuiabá, Brazil
| | - P. Alvarado
- ALVALAB, Avda. de Bruselas 2-3B, 33011 Oviedo, Spain
| | - A.L. Alves
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - D.A. Andrade
- Instituto de Ciências Biológicas e da Saúde – ICBS, Universidade Federal de Alagoas, Maceió, Brazil
| | - J.P. Andrade
- Universidade Estadual de Feira de Santana, Av. Transnordestina, S/N – Novo Horizonte, 44036-900 Feira de Santana, BA, Brazil
| | - R.N. Barbosa
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - A. Barili
- Escuela de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Av. 12 de octubre 1076 y Roca, Quito, Ecuador
| | - C.W. Barnes
- Escuela de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Av. 12 de octubre 1076 y Roca, Quito, Ecuador
| | - I.G. Baseia
- Departamento Botânica e Zoologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil
| | - J.-M. Bellanger
- CEFE – CNRS – Université de Montpellier – Université Paul-Valéry Montpellier – EPHE – IRD – INSERM, Campus CNRS, 1919 Route de Mende, 34293 Montpellier, France
| | - C. Berlanas
- Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Ctra. LO-20, Salida 13, 26007 Logroño, La Rioja, Spain
| | | | | | - A.Yu. Biketova
- Synthetic and Systems Biology Unit, Biological Research Centre, Hungarian Academy of Sciences, H-6726 Szeged, Hungary
| | - F.S. Bomfim
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - T.E. Brandrud
- Norwegian Institute for Nature Research, Gaustadalléen 21, NO-0349 Oslo, Norway
| | - K. Bransgrove
- Plant Pathology Herbarium, Department of Agriculture and Fisheries, Dutton Park 4102, Queensland, Australia
| | - A.C.Q. Brito
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - J.F. Cano-Lira
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - T. Cantillo
- Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, S/N – Novo Horizonte, 44036-900 Feira de Santana, BA, Brazil
| | - A.D. Cavalcanti
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - R. Cheewangkoon
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - R.S. Chikowski
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - C. Conforto
- Instituto de Patología Vegetal, Instituto Nacional de Tecnología Agropecuaria, Córdoba, Argentina
| | - T.R.L. Cordeiro
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - J.D. Craine
- 5320 N. Peachtree Road, Dunwoody, GA 30338, USA
| | - R. Cruz
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - U. Damm
- Senckenberg Museum of Natural History Görlitz, PF 300 154, 02806 Görlitz, Germany
| | - R.J.V. de Oliveira
- Comissão Executiva do Plano da Lavoura Cacaueira (CEPLAC)/CEPEC, Itabuna, Bahia, Brazil
| | | | - H.G. de Souza
- Recôncavo da Bahia Federal University, Bahia, Brazil
| | - J.D.W. Dearnaley
- Centre for Crop Health, University of Southern Queensland, Toowoomba 4350, Australia
| | - R.A. Dimitrov
- National Center of Infectious and Parasitic Diseases, 26 Yanko Sakazov blvd, Sofia 1504, Bulgaria
| | - F. Dovana
- Department of Life Sciences and Systems Biology, University of Turin, Viale P.A. Mattioli 25, 10125, Torino, Italy
| | - A. Erhard
- EMSL Analytical, Inc., 200 Route 130 North, Cinnaminson, NJ 08077, USA
| | - F. Esteve-Raventós
- Departamento de Ciencias de la Vida (Area de Botánica), Universidad de Alcalá, 28805 Alcalá de Henares, Madrid, Spain
| | - C.R. Félix
- Instituto de Ciências Biológicas e da Saúde – ICBS, Universidade Federal de Alagoas, Maceió, Brazil
| | - G. Ferisin
- Via A. Vespucci 7, 1537, 33052 Cervignano del Friuli (UD), Italy
| | - R.A. Fernandes
- Departamento de Fitopatologia, Universidade Federal de Brasilia, Brasilia, Brazil
| | - R.J. Ferreira
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - L.O. Ferro
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | | | - J.L. Frank
- Department of Biology, Southern Oregon University, Ashland OR 97520, USA
| | - K.T.L.S. Freire
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - D. García
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - J. Gené
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - A. Gêsiorska
- Department of Molecular Phylogenetics and Evolution, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, ul. Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - T.B. Gibertoni
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - R.A.G. Gondra
- University Utrecht, P.O. Box 80125, 3508 TC Utrecht, The Netherlands
| | - D.E. Gouliamova
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 26 Acad. Georgi Bonchev, Sofia 1113, Bulgaria
| | - D. Gramaje
- Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Ctra. LO-20, Salida 13, 26007 Logroño, La Rioja, Spain
| | | | - L.F.P. Gusmão
- Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Av. Transnordestina, S/N – Novo Horizonte, 44036-900 Feira de Santana, BA, Brazil
| | - S. Haitook
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Y. Hirooka
- Department of Clinical Plant Science, Faculty of Bioscience, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo, Japan
| | - J. Houbraken
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | - V. Hubka
- Department of Botany, Faculty of Science, Charles University, Benátská 2, 128 01 Prague 2, Czech Republic
- Laboratory of Fungal Genetics and Metabolism, Institute of Microbiology of the CAS, v.v.i, Vídeòská 1083, 142 20 Prague 4, Czech Republic
| | - A. Inamdar
- Department of Biotechnology and Microbiology, Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431001, Maharashtra, India
| | - T. Iturriaga
- University of Illinois Urbana-Champaign, Illinois Natural History Survey, 1816 South Oak Street, Champaign, Illinois, 61820, USA
- Plant Pathology Herbarium, 334 Plant Science Building, Cornell University, Ithaca, NY 14853 USA
| | - I. Iturrieta-González
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - M. Jadan
- Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - N. Jiang
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - A. Justo
- Department of Biology, Clark University, 950 Main St, Worcester, 01610, MA, USA
| | - A.V. Kachalkin
- Lomonosov Moscow State University, Moscow, Russia
- All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms RAS, Pushchino, Russia
| | - V.I. Kapitonov
- Tobolsk Complex Scientific Station of the Ural Branch of the Russian Academy of Sciences, 626152 Tobolsk, Russia
| | - M. Karadelev
- Institute of Biology, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, Republic of Macedonia
| | - J. Karakehian
- Farlow Herbarium, Harvard University, 22 Divinity Avenue, Cambridge, MA 02138, USA
| | - T. Kasuya
- Department of Biology, Keio University, 4-1-1, Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8521, Japan
| | - I. Kautmanová
- Slovak National Museum-Natural History Museum, vjanaskeho nab. 2, P.O. Box 13, 81006 Bratislava, Slovakia
| | - J. Kruse
- Centre for Crop Health, University of Southern Queensland, Toowoomba 4350, Australia
| | - I. Kušan
- Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - T.A. Kuznetsova
- A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia
| | - M.F. Landell
- Instituto de Ciências Biológicas e da Saúde – ICBS, Universidade Federal de Alagoas, Maceió, Brazil
| | - K.-H. Larsson
- Natural History Museum, P.O. Box 1172 Blindern 0318, University of Oslo, Norway
| | - H.B. Lee
- Environmental Microbiology Lab, Division of Food Technology, Biotechnology & Agrochemistry, College of Agriculture and Life Sciences, Chonnam National University, Korea
| | - D.X. Lima
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - C.R.S. Lira
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - A.R. Machado
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - H. Madrid
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Camino La Pirámide 5750, Huechuraba, Santiago, Chile
| | - O.M.C. Magalhães
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - H. Majerova
- Faculty of Chemical and Food Technology, Biochemistry and Microbiology Department, Slovak University of Technology, Radlinského 9, 81237 Bratislava, Slovakia
| | - E.F. Malysheva
- Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - R.R. Mapperson
- Centre for Crop Health, University of Southern Queensland, Toowoomba 4350, Australia
| | | | - M.P. Martín
- Departamento de Micología, Real Jardín Botánico, RJB-CSIC, Plaza de Murillo 2, 28014 Madrid, Spain
| | - A. Martín-Sanz
- Pioneer Hi-Bred International, Inc., Campus Dupont – Pioneer, Ctra. Sevilla-Cazalla km 4.6, 41309 La Rinconada, Spain
| | - N. Matočec
- Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - A.R. McTaggart
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia 4069, Australia
| | - J.F. Mello
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - R.F.R. Melo
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - A. Mešić
- Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - S.J. Michereff
- Centro de Ciências Agrárias e da Biodiversidade, Universidade Federal do Cariri, Ceará, Brazil
| | - A.N. Miller
- University of Illinois Urbana-Champaign, Illinois Natural History Survey, 1816 South Oak Street, Champaign, Illinois, 61820, USA
| | - A. Minoshima
- Department of Clinical Plant Science, Faculty of Bioscience, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo, Japan
| | - L. Molinero-Ruiz
- Department of Crop Protection, Institute for Sustainable Agriculture, CSIC, 14004 Córdoba, Spain
| | - O.V. Morozova
- Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, Russia
| | - D. Mosoh
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, S.P. Pune University, Ganeshkhind, Pune 411 007, Maharashtra, India
| | - M. Nabe
- 2-2-1, Sakuragaoka-nakamachi, Nishi-ku, Kobe, Hyogo 651-2226, Japan
| | - R. Naik
- National Centre for Antarctic and Ocean Research, Headland Sada, Vasco-da-Gama-403 804, Goa, India
| | - K. Nara
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha, Kashiwa, Chiba 277-8563, Japan
| | - S.S. Nascimento
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - R.P. Neves
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - I. Olariaga
- Biology, Geology and Inorganic Chemistry department, Universidad Rey Juan Carlos, C/ Tulipán s/n, 28933 Móstoles, Madrid, Spain
| | - R.L. Oliveira
- Programa de Pós-Graduação em Sistemática e Evolução, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Av. Senador Salgado Filho, 3000, 59072-970, Natal, RN, Brazil
| | - T.G.L. Oliveira
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - T. Ono
- Ogasawara Subtropical Branch of Tokyo Metropolitan Agriculture and Forestry Research Center, Komagari, Chichijima, Ogasawara, Tokyo, Japan
| | - M.E. Ordoñez
- Escuela de Ciencias Biológicas, Pontificia Universidad Católica del Ecuador, Av. 12 de octubre 1076 y Roca, Quito, Ecuador
| | - A. de M. Ottoni
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - L.M. Paiva
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - F. Pancorbo
- Pintores de El Paular 25, 28740 Rascafría, Madrid, Spain
| | - B. Pant
- Central Department of Botany, Tribhuvan University, Nepal
| | - J. Pawłowska
- Department of Molecular Phylogenetics and Evolution, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, ul. Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - S.W. Peterson
- Mycotoxin Prevention and Applied Microbiology Research Unit, Agricultural Research Service, U.S. Department of Agriculture, 1815 North University Street, Peoria, IL 61604, USA
| | - D.B. Raudabaugh
- University of Illinois Urbana-Champaign, Illinois Natural History Survey, 1816 South Oak Street, Champaign, Illinois, 61820, USA
| | - E. Rodríguez-Andrade
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - E. Rubio
- C/ José Cueto 3 – 5ºB, 33401 Avilés, Asturias, Spain
| | - K. Rusevska
- Institute of Biology, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, Republic of Macedonia
| | - A.L.C.M.A. Santiago
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - A.C.S. Santos
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - C. Santos
- Departamento de Ciencias Químicas y Recursos Naturales, BIOREN-UFRO, Universidad de La Frontera, Temuco, Chile
| | - N.A. Sazanova
- Institute of Biological Problems of the North, Far East Branch of the Russian Academy of Sciences, Magadan, Russia
| | - S. Shah
- Central Department of Botany, Tribhuvan University, Nepal
| | - J. Sharma
- Department of Plant and Soil Science, Texas Tech. University, USA
| | - B.D.B. Silva
- Universidade Federal da Bahia, Instituto de Biologia, Departamento de Botânica, 40170115 Ondina, Salvador, BA, Brazil
| | - J.L. Siquier
- Carrer Major, 19, E-07300 Inca (Islas Baleares), Spain
| | - M.S. Sonawane
- National Centre for Microbial Resource (NCMR), National Centre for Cell Science, S.P. Pune University, Ganeshkhind, Pune 411 007, Maharashtra, India
| | - A.M. Stchigel
- Mycology Unit, Medical School and IISPV, Universitat Rovira i Virgili (URV), Sant Llorenç 21, 43201 Reus, Tarragona, Spain
| | - T. Svetasheva
- Biology and Technologies of Living Systems Department, Tula State Lev Tolstoy Pedagogical University, 125 Lenin av., 300026 Tula, Russia
| | - N. Tamakeaw
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand
| | - M.T. Telleria
- Departamento de Micología, Real Jardín Botánico, RJB-CSIC, Plaza de Murillo 2, 28014 Madrid, Spain
| | - P.V. Tiago
- Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - C.M. Tian
- The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
| | - Z. Tkalčec
- Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
| | - M.A. Tomashevskaya
- All-Russian Collection of Microorganisms, G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms RAS, Pushchino, Russia
| | - H.H. Truong
- Department of Clinical Plant Science, Faculty of Bioscience, Hosei University, 3-7-2 Kajino-cho, Koganei, Tokyo, Japan
| | - M.V. Vecherskii
- A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia
| | - C.M. Visagie
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
- Biosystematics Division, Agricultural Research Council – Plant Health and Protection, P. Bag X134, Queenswood, Pretoria 0121, South Africa
| | - A. Vizzini
- Department of Life Sciences and Systems Biology, University of Turin, Viale P.A. Mattioli 25, 10125, Torino, Italy
| | - N. Yilmaz
- Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute (FABI), Faculty of Natural and Agricultural Sciences, University of Pretoria, Private Bag X20, Hatfield 0028, Pretoria, South Africa
| | - I.V. Zmitrovich
- Komarov Botanical Institute of the Russian Academy of Sciences, Saint Petersburg, Russia
| | | | - T. Boekhout
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
- Institute of Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, Amsterdam, The Netherlands
| | - T. Kehlet
- Natural History Museum of Denmark, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen E, Denmark
| | - T. Læssøe
- Natural History Museum of Denmark, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100 Copenhagen E, Denmark
| | - J.Z. Groenewald
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
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Davis TS, Stewart JE, Mann A, Bradley C, Hofstetter RW. Evidence for multiple ecological roles of Leptographium abietinum, a symbiotic fungus associated with the North American spruce beetle. FUNGAL ECOL 2019. [DOI: 10.1016/j.funeco.2018.04.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Davis TS, Mann AJ, Malesky D, Jankowski E, Bradley C. Laboratory and Field Evaluation of the Entomopathogenic Fungus Beauveria bassiana (Deuteromycotina: Hyphomycetes) for Population Management of Spruce Beetle, Dendroctonus rufipennis (Coleoptera: Scolytinae), in Felled Trees and Factors Limiting Pathogen Success. ENVIRONMENTAL ENTOMOLOGY 2018; 47:594-602. [PMID: 29590351 DOI: 10.1093/ee/nvy036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Indexed: 06/08/2023]
Abstract
An isolate of the entomopathogenic fungus Beauveria bassiana (Bals.) Vuill. (Deuteromycotina: Hyphomycetes) was tested for its ability to reduce survival and reproduction of spruce beetle, Dendroctonus rufipennis (Kirby) (Coleoptera: Scolytinae), under laboratory and field conditions. Conidial suspension applied directly to adults or to filter papers that adults contacted had a median survival time of 3-4 d in laboratory assays and beetles died more rapidly when exposed to conidial suspension than when treated with surfactant solution only. In the field, conidial suspension was applied to the surface of felled and pheromone-baited Engelmann spruce (Picea engelmannii) trees using a backpack sprayer. Mortality of colonizing parent beetles (F0), reproduction (abundance of F1 offspring in logs), and emergence of F1 beetles from logs was compared between treated and nontreated logs. Application of spore suspension increased mortality of F0 adults by 36% on average. Total F1 reproduction was reduced by 17% and emergence from logs was reduced by 13% in treated logs, but considerable variability in reproduction and emergence was observed. Viable spores were re-isolated from treated logs up to 90 d after application, indicating that spores are capable of long-term persistence on the tree bole microhabitat. Subsequent in vitro tests revealed that temperatures below 15°C and exposure to spruce monoterpenes likely limit performance of B. bassiana under field conditions, but exposure to low-intensity light or interactions with spruce beetle symbiotic fungi were not strongly inhibitory. It is concluded that matching environmental tolerances of biocontrol fungi to field conditions can likely improve their usefulness for control of spruce beetle in windthrown trees.
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Affiliation(s)
- Thomas Seth Davis
- Forest & Rangeland Stewardship, Colorado State University, Campus Delivery, Fort Collins, CO
| | - Andrew J Mann
- Forest & Rangeland Stewardship, Colorado State University, Campus Delivery, Fort Collins, CO
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Cloonan KR, Andreadis SS, Chen H, Jenkins NE, Baker TC. Attraction, Oviposition and Larval Survival of the Fungus Gnat, Lycoriella ingenua, on Fungal Species Isolated from Adults, Larvae, and Mushroom Compost. PLoS One 2016; 11:e0167074. [PMID: 27936070 PMCID: PMC5147838 DOI: 10.1371/journal.pone.0167074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Accepted: 11/08/2016] [Indexed: 11/18/2022] Open
Abstract
We previously showed that the females of the mushroom sciarid, Lycoriella ingenua (Dufour, 1839) (Diptera: Sciaridae), one of the most severe pests of the cultivated white button mushroom, Agaricus bisporus (J.E. Lange) Emil J. Imbach (Agaricales: Agaricaceae), are attracted to the mushroom compost that mushrooms are grown on and not to the mushrooms themselves. We also showed that females are attracted to the parasitic green mold, Trichoderma aggressivum. In an attempt to identify what is in the mushroom compost that attracts female L. ingenua, we isolated several species of fungi from adult males and females, third instar larvae, and mushroom compost itself. We then analyzed the attraction of females to these substrates using a static-flow two choice olfactometer, as well as their oviposition tendencies in another type of assay under choice and no-choice conditions. We also assessed the survival of larvae to adulthood when first instar larvae were placed on each of the isolated fungal species. We found that female flies were attracted most to the mycoparasitic green mold, T. aggressivum, to Penicilium citrinum isolated from adult female bodies, and to Scatylidium thermophilium isolated from the mushroom compost. Gravid female flies laid the most eggs on T. aggressivum, Aspergillus flavus isolated from third instar larval frass, Aspergillus fumigatus isolated from adult male bodies, and on P. citrinum. This egg-laying trend remained consistent under no-choice conditions as females aged. First instar larvae developed to adulthood only on S. thermophilium and Chaetomium sp. isolated from mushroom compost, and on P. citrinum. Our results indicate that the volatiles from a suite of different fungal species act in tandem in the natural setting of mushroom compost, with some first attracting gravid female flies and then others causing them to oviposit. The ecological context of these findings is important for creating an optimal strategy for using possible semiochemicals isolated from these fungal species to better monitor and control this pestiferous mushroom fly species.
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Affiliation(s)
- Kevin R. Cloonan
- Department of Entomology, Penn State University, University Park, PA, United States of America
| | - Stefanos S. Andreadis
- Department of Entomology, Penn State University, University Park, PA, United States of America
| | - Haibin Chen
- Institute of Health and Environmental Ecology, Wenzhou Medical University, Wenzhou, Zhejiang Province, P. R. China
| | - Nina E. Jenkins
- Department of Entomology, Penn State University, University Park, PA, United States of America
| | - Thomas C. Baker
- Department of Entomology, Penn State University, University Park, PA, United States of America
- * E-mail:
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Stefani FO, Klimaszewski J, Morency MJ, Bourdon C, Labrie P, Blais M, Venier L, Séguin A. Fungal community composition in the gut of rove beetles (Coleoptera: Staphylinidae) from the Canadian boreal forest reveals possible endosymbiotic interactions for dietary needs. FUNGAL ECOL 2016. [DOI: 10.1016/j.funeco.2016.05.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Cale JA, Collignon RM, Klutsch JG, Kanekar SS, Hussain A, Erbilgin N. Fungal Volatiles Can Act as Carbon Sources and Semiochemicals to Mediate Interspecific Interactions Among Bark Beetle-Associated Fungal Symbionts. PLoS One 2016; 11:e0162197. [PMID: 27583519 PMCID: PMC5008770 DOI: 10.1371/journal.pone.0162197] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 08/18/2016] [Indexed: 11/18/2022] Open
Abstract
Mountain pine beetle (Dendroctonus ponderosae) has killed millions of hectares of pine forests in western North America. Beetle success is dependent upon a community of symbiotic fungi comprised of Grosmannia clavigera, Ophiostoma montium, and Leptographium longiclavatum. Factors regulating the dynamics of this community during pine infection are largely unknown. However, fungal volatile organic compounds (FVOCs) help shape fungal interactions in model and agricultural systems and thus may be important drivers of interactions among bark beetle-associated fungi. We investigated whether FVOCs can mediate interspecific interactions among mountain pine beetle's fungal symbionts by affecting fungal growth and reproduction. Headspace volatiles were collected and identified to determine species-specific volatile profiles. Interspecific effects of volatiles on fungal growth and conidia production were assessed by pairing physically-separated fungal cultures grown either on a carbon-poor or -rich substrate, inside a shared-headspace environment. Fungal VOC profiles differed by species and influenced the growth and/or conidia production of the other species. Further, our results showed that FVOCs can be used as carbon sources for fungi developing on carbon-poor substrates. This is the first report demonstrating that FVOCs can drive interactions among bark beetle fungal symbionts, and thus are important factors in beetle attack success.
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Affiliation(s)
- Jonathan A Cale
- Department of Renewable Resources, 4-42 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
| | - R Maxwell Collignon
- Department of Entomology, Entomology Building, University of California, Riverside, CA, 92521, United States of America
| | - Jennifer G Klutsch
- Department of Renewable Resources, 4-42 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
| | - Sanat S Kanekar
- Department of Renewable Resources, 4-42 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
| | - Altaf Hussain
- Department of Renewable Resources, 4-42 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
| | - Nadir Erbilgin
- Department of Renewable Resources, 4-42 Earth Sciences Building, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
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Martin E, Bongiorno G, Giovati L, Montagna M, Crotti E, Damiani C, Gradoni L, Polonelli L, Ricci I, Favia G, Epis S. Isolation of a Wickerhamomyces anomalus yeast strain from the sandfly Phlebotomus perniciosus, displaying the killer phenotype. MEDICAL AND VETERINARY ENTOMOLOGY 2016; 30:101-106. [PMID: 26542209 DOI: 10.1111/mve.12149] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/27/2015] [Accepted: 08/06/2015] [Indexed: 06/05/2023]
Abstract
The yeast Wickerhamomyces anomalus has been studied for its wide biotechnological potential, mainly for applications in the food industry. Different strains of W. anomalus have been isolated from diverse habitats and recently from insects, including mosquitoes of medical importance. This paper reports the isolation and phylogenetic characterization of W. anomalus from laboratory-reared adults and larvae of Phlebotomus perniciosus (Diptera: Psychodidae), a main phlebotomine vector of human and canine leishmaniasis. Of 65 yeast strains isolated from P. perniciosus, 15 strains were identified as W. anomalus; one of these was tested for the killer phenotype and demonstrated inhibitory activity against four yeast sensitive strains, as reported for mosquito-isolated strains. The association between P. perniciosus and W. anomalus deserves further investigation in order to explore the possibility that this yeast may exert inhibitory/killing activity against Leishmania spp.
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Affiliation(s)
- E Martin
- Department of Veterinary Science and Public Health, University of Milan, Milan, Italy
| | - G Bongiorno
- Unit of Vector-Borne Diseases and International Health, MIPI Department, Istituto Superiore di Sanità, Rome, Italy
| | - L Giovati
- Microbiology and Virology Unit, Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Parma, Italy
| | - M Montagna
- Department of Agricultural and Environmental Sciences, University of Milan, Milan, Italy
| | - E Crotti
- Department of Food, Environmental and Evolutionary Sciences, University of Milan, Milan, Italy
| | - C Damiani
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - L Gradoni
- Unit of Vector-Borne Diseases and International Health, MIPI Department, Istituto Superiore di Sanità, Rome, Italy
| | - L Polonelli
- Microbiology and Virology Unit, Department of Biomedical, Biotechnological and Translational Sciences, University of Parma, Parma, Italy
| | - I Ricci
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - G Favia
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - S Epis
- Department of Veterinary Science and Public Health, University of Milan, Milan, Italy
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Flórez LV, Biedermann PHW, Engl T, Kaltenpoth M. Defensive symbioses of animals with prokaryotic and eukaryotic microorganisms. Nat Prod Rep 2015; 32:904-36. [DOI: 10.1039/c5np00010f] [Citation(s) in RCA: 233] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Many organisms team up with symbiotic microbes for defense against predators, parasites, parasitoids, or pathogens. Here we review the known defensive symbioses in animals and the microbial secondary metabolites responsible for providing protection to the host.
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Affiliation(s)
- Laura V. Flórez
- Max Planck Institute for Chemical Ecology
- Insect Symbiosis Research Group
- 07745 Jena
- Germany
| | - Peter H. W. Biedermann
- Max Planck Institute for Chemical Ecology
- Insect Symbiosis Research Group
- 07745 Jena
- Germany
| | - Tobias Engl
- Max Planck Institute for Chemical Ecology
- Insect Symbiosis Research Group
- 07745 Jena
- Germany
| | - Martin Kaltenpoth
- Max Planck Institute for Chemical Ecology
- Insect Symbiosis Research Group
- 07745 Jena
- Germany
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29
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Bracewell RR, Six DL. Broadscale specificity in a bark beetle-fungal symbiosis: a spatio-temporal analysis of the mycangial fungi of the western pine beetle. MICROBIAL ECOLOGY 2014; 68:859-870. [PMID: 25004995 DOI: 10.1007/s00248-014-0449-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/19/2014] [Indexed: 06/03/2023]
Abstract
Whether and how mutualisms are maintained through ecological and evolutionary time is a seldom studied aspect of bark beetle-fungal symbioses. All bark beetles are associated with fungi and some species have evolved structures for transporting their symbiotic partners. However, the fungal assemblages and specificity in these symbioses are not well known. To determine the distribution of fungi associated with the mycangia of the western pine beetle (Dendroctonus brevicomis), we collected beetles from across the insect's geographic range including multiple genetically distinct populations. Two fungi, Entomocorticium sp. B and Ceratocystiopsis brevicomi, were isolated from the mycangia of beetles from all locations. Repeated sampling at two sites in Montana found that Entomocorticium sp. B was the most prevalent fungus throughout the beetle's flight season, and that females carrying that fungus were on average larger than females carrying C. brevicomi. We present evidence that throughout the flight season, over broad geographic distances, and among genetically distinct populations of beetle, the western pine beetle is associated with the same two species of fungi. In addition, we provide evidence that one fungal species is associated with larger adult beetles and therefore might provide greater benefit during beetle development. The importance and maintenance of this bark beetle-fungus interaction is discussed.
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Affiliation(s)
- Ryan R Bracewell
- Department of Ecosystem and Conservation Sciences, College of Forestry, The University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA,
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30
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Lou QZ, Lu M, Sun JH. Yeast diversity associated with invasive Dendroctonus valens killing Pinus tabuliformis in China using culturing and molecular methods. MICROBIAL ECOLOGY 2014; 68:397-415. [PMID: 24691849 DOI: 10.1007/s00248-014-0413-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 03/14/2014] [Indexed: 06/03/2023]
Abstract
Bark beetle-associated yeasts are much less studied than filamentous fungi, yet they are also considered to play important roles in beetle nutrition, detoxification, and chemical communication. The red turpentine beetle, Dendroctonus valens, an invasive bark beetle introduced from North America, became one of the most destructive pests in China, having killed more than 10 million Pinus tabuliformis as well as other pine species. No investigation of yeasts associated with this bark beetle in its invaded ranges has been conducted so far. The aim of this study was to assess the diversity of yeast communities in different microhabitats and during different developmental stages of Den. valens in China using culturing and denaturing gradient gel electrophoresis (DGGE) approaches and to compare the yeast flora between China and the USA. The yeast identity was confirmed by sequencing the D1/D2 domain of LSU ribosomal DNA (rDNA). In total, 21 species (13 ascomycetes and eight basidiomycetes) were detected by culturing method, and 12 species (11 ascomycetes and one basidiomycetes) were detected by molecular methods from China. The most frequent five species in China were Candida piceae (Ogataea clade), Cyberlindnera americana, Candida oregonensis (Metschnikowia clade), Candida nitratophila (Ogataea clade) and an undescribed Saccharomycopsis sp., detected by both methods. Seven species were exclusively detected by DGGE. Ca. oregonensis (Metschnikowia clade) was the most frequently detected species by DGGE method. Eight species (all were ascomycetes) from the USA were isolated; seven of those were also found in China. We found significant differences in yeast total abundance as well as community composition between different developmental stages and significant differences between the surface and the gut. The frass yeast community was more similar to that of Den. valens surface or larvae than to the community of the gut or adults. Possible functions of the yeast associates are discussed.
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Affiliation(s)
- Qiao-Zhe Lou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology (IOZ), Chinese Academy of Sciences (CAS), Beijing, 100101, China
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31
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Kolařík M, Jankowiak R. Vector affinity and diversity of Geosmithia fungi living on subcortical insects inhabiting Pinaceae species in central and northeastern Europe. MICROBIAL ECOLOGY 2013; 66:682-700. [PMID: 23624540 DOI: 10.1007/s00248-013-0228-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 04/08/2013] [Indexed: 06/02/2023]
Abstract
Fungi from the genus Geosmithia (Ascomycota: Hypocreales) are associated with bark beetles (Coleoptera: Scolytinae), though little is known about ecology, diversity, and distribution of these fungi across beetle and its host tree species. This study surveyed the diversity, distribution and vector affinity of Geosmithia isolated from subcortical insects that colonized trees from the family Pinaceae in Central and Northeastern Europe. Twelve Geosmithia species were isolated from 85 plant samples associated with 23 subcortical insect species (including 14 bark beetle species). Geosmithia community composition was similar across different localities and vector species; although the fungal communities associated with insects that colonized Pinus differed from that colonizing other tree species (Abies, Larix, and Picea). Ten Geosmithia species from four independent phylogenetic lineages were not reported previously from vectors feeding on other plant families and seem to be restricted to the vectors from Pinaceae only. We conclude that presence of such substrate specificity suggests a long and stable association between Geosmithia and bark beetles.
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Affiliation(s)
- Miroslav Kolařík
- Institute of Microbiology of the ASCR, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic,
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32
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The bark beetle holobiont: why microbes matter. J Chem Ecol 2013; 39:989-1002. [PMID: 23846183 DOI: 10.1007/s10886-013-0318-8] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/19/2013] [Accepted: 06/27/2013] [Indexed: 01/20/2023]
Abstract
All higher organisms are involved in symbioses with microbes. The importance of these partnerships has led to the concept of the holobiont, defined as the animal or plant with all its associated microbes. Indeed, the interactions between insects and symbionts form much of the basis for the success and diversity of this group of arthropods. Insects rely on microbes to perform basic life functions and to exploit resources and habitats. By "partnering" with microbes, insects access new genomic variation instantaneously allowing the exploitation of new adaptive zones, influencing not only outcomes in ecological time, but the degree of innovation and change that occurs over evolutionary time. In this review, I present a brief overview of the importance of insect-microbe holobionts to illustrate how critical an understanding of the holobiont is to understanding the insect host and it interactions with its environment. I then review what is known about the most influential insect holobionts in many forest ecosystems-bark beetles and their microbes-and how new approaches and technologies are allowing us to illuminate how these symbioses function. Finally, I discuss why it will be critical to study bark beetles as a holobiont to understand the ramifications and extent of anthropogenic change in forest ecosystems.
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33
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Microbial Volatile Emissions as Insect Semiochemicals. J Chem Ecol 2013; 39:840-59. [DOI: 10.1007/s10886-013-0306-z] [Citation(s) in RCA: 231] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/28/2013] [Accepted: 06/04/2013] [Indexed: 12/22/2022]
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Davis TS, Boundy-Mills K, Landolt PJ. Volatile emissions from an epiphytic fungus are semiochemicals for eusocial wasps. MICROBIAL ECOLOGY 2012; 64:1056-63. [PMID: 22644482 DOI: 10.1007/s00248-012-0074-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 05/12/2012] [Indexed: 05/09/2023]
Abstract
Microbes are ubiquitous on plant surfaces. However, interactions between epiphytic microbes and arthropods are rarely considered as a factor that affects arthropod behaviors. Here, volatile emissions from an epiphytic fungus were investigated as semiochemical attractants for two eusocial wasps. The fungus Aureobasidium pullulans was isolated from apples, and the volatile compounds emitted by fungal colonies were quantified. The attractiveness of fungal colonies and fungal volatiles to social wasps (Vespula spp.) were experimentally tested in the field. Three important findings emerged: (1) traps baited with A. pullulans caught 2750 % more wasps on average than unbaited control traps; (2) the major headspace volatiles emitted by A. pullulans were 2-methyl-1-butanol, 3-methyl-1-butanol, and 2-phenylethyl alcohol; and (3) a synthetic blend of fungal volatiles attracted 4,933 % more wasps on average than unbaited controls. Wasps were most attracted to 2-methyl-1-butanol. The primary wasp species attracted to fungal volatiles were the western yellowjacket (Vespula pensylvanica) and the German yellowjacket (V. germanica), and both species externally vectored A. pullulans. This is the first study to link microbial volatile emissions with eusocial wasp behaviors, and these experiments indicate that volatile compounds emitted by an epiphytic fungus can be responsible for wasp attraction. This work implicates epiphytic microbes as important components in the community ecology of some eusocial hymenopterans, and fungal emissions may signal suitable nutrient sources to foraging wasps. Our experiments are suggestive of a potential symbiosis, but additional studies are needed to determine if eusocial wasp-fungal associations are widespread, and whether these associations are incidental, facultative, or obligate.
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Witzgall P, Proffit M, Rozpedowska E, Becher PG, Andreadis S, Coracini M, Lindblom TUT, Ream LJ, Hagman A, Bengtsson M, Kurtzman CP, Piskur J, Knight A. “This is not an Apple”–Yeast Mutualism in Codling Moth. J Chem Ecol 2012; 38:949-57. [DOI: 10.1007/s10886-012-0158-y] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 06/25/2012] [Accepted: 06/26/2012] [Indexed: 10/28/2022]
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Popa V, Déziel E, Lavallée R, Bauce E, Guertin C. The complex symbiotic relationships of bark beetles with microorganisms: a potential practical approach for biological control in forestry. PEST MANAGEMENT SCIENCE 2012; 68:963-75. [PMID: 22566204 DOI: 10.1002/ps.3307] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2011] [Revised: 02/10/2012] [Accepted: 02/15/2012] [Indexed: 05/14/2023]
Abstract
Bark beetles, especially Dendroctonus species, are considered to be serious pests of the coniferous forests in North America. Bark beetle forest pests undergo population eruptions, causing region wide economic losses. In order to save forests, finding new and innovative environmentally friendly approaches in wood-boring insect pest management is more important than ever. Several biological control methods have been attempted over time to limit the damage and spreading of bark beetle epidemics. The use of entomopathogenic microorganisms against bark beetle populations is an attractive alternative tool for many biological control programmes in forestry. However, the effectiveness of these biological control agents is strongly affected by environmental factors, as well as by the susceptibility of the insect host. Bark beetle susceptibility to entomopathogens varies greatly between species. According to recent literature, bark beetles are engaged in symbiotic relationships with fungi and bacteria. These types of relationship are very complex and apparently involved in bark beetle defensive mechanisms against pathogens. The latest scientific discoveries in multipartite symbiosis have unravelled unexpected opportunities in bark beetle pest management, which are discussed in this article.
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Affiliation(s)
- Valentin Popa
- INRS-Institut Armand-Frappier, Laval, Quebec, Canada
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Six DL. Ecological and Evolutionary Determinants of Bark Beetle -Fungus Symbioses. INSECTS 2012; 3:339-66. [PMID: 26467964 PMCID: PMC4553632 DOI: 10.3390/insects3010339] [Citation(s) in RCA: 142] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 03/01/2012] [Accepted: 03/15/2012] [Indexed: 11/23/2022]
Abstract
Ectosymbioses among bark beetles (Curculionidae, Scolytinae) and fungi (primarily ophiostomatoid Ascomycetes) are widespread and diverse. Associations range from mutualistic to commensal, and from facultative to obligate. Some fungi are highly specific and associated only with a single beetle species, while others can be associated with many. In addition, most of these symbioses are multipartite, with the host beetle associated with two or more consistent partners. Mycangia, structures of the beetle integument that function in fungal transport, have evolved numerous times in the Scolytinae. The evolution of such complex, specialized structures indicates a high degree of mutual dependence among the beetles and their fungal partners. Unfortunately, the processes that shaped current day beetle-fungus symbioses remain poorly understood. Phylogeny, the degree and type of dependence on partners, mode of transmission of symbionts (vertical vs. horizontal), effects of the abiotic environment, and interactions among symbionts themselves or with other members of the biotic community, all play important roles in determining the composition, fidelity, and longevity of associations between beetles and their fungal associates. In this review, I provide an overview of these associations and discuss how evolution and ecological processes acted in concert to shape these fascinating, complex symbioses.
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Affiliation(s)
- Diana L Six
- Department of Ecosystem and Conservation Sciences, College of Forestry and Conservation, University of Montana, Missoula, MT 59812, USA.
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Yurkov A, Krüger D, Begerow D, Arnold N, Tarkka MT. Basidiomycetous yeasts from boletales fruiting bodies and their interactions with the mycoparasite Sepedonium chrysospermum and the host fungus Paxillus. MICROBIAL ECOLOGY 2012; 63:295-303. [PMID: 21833540 DOI: 10.1007/s00248-011-9923-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 07/18/2011] [Indexed: 05/31/2023]
Abstract
Interactions between mushrooms, yeasts, and parasitic fungi are probably common in nature, but are rarely described. Bolete fruiting bodies are associated with a broad spectrum of microorganisms including yeasts, and they are commonly infected with filamentous mycoparasites of the genus Sepedonium (teleomorph Hypomyces). We report the isolation of 17 yeast strains from Paxillus and Xerocomus, 16 of which were obtained from the surface tissue, the primary site of Sepedonium infection. Phylogenetic analyses with the D1/D2 region of the 28S ribosomal gene and the internal transcribed spacers placed the yeasts as Rhodotorula, Rhodosporidium, and Mastigobasidium from the Pucciniomycotina, Cryptococcus, Cystofilobasidium, Holtermanniella, and Trichosporon from the Agaricomycotina, and Kluyveromyces from the Saccharomycotina including the first isolation of Rhodotorula graminis from Europe. To investigate the influence of the yeast strains on the mycoparasite and the host fungus, in vitro assays were conducted with Sepedonium chrysospermum and Paxillus involutus. Both S. chrysospermum growth inhibitory and stimulating yeast strains were detected among the isolates. The number of S. chrysospermum inhibitory yeast strains increased and the number of S. chrysospermum stimulatory yeast strains decreased in the presence of P. involutus in co-cultures. Low nutrient levels in the culture medium also led to an increased number of S. chrysospermum inhibitory yeast strains and ten yeasts inhibited the mycoparasite in spatial separation by a crosswall. Six yeast strains inhibited P. involutus in dual culture, and the inhibitory P. involutus yeast interactions increased to nine in the presence of S. chrysospermum. Our results suggest that the bolete-associated yeasts influence the growth of the mycoparasitic fungus, which may affect the health of the fruiting bodies.
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Affiliation(s)
- Andrey Yurkov
- Department of Evolution and Biodiversity of Plants, Geobotany Section, Ruhr-University Bochum, Bochum, Germany
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Responses of bark beetle-associated bacteria to host monoterpenes and their relationship to insect life histories. J Chem Ecol 2011; 37:808-17. [PMID: 21710365 DOI: 10.1007/s10886-011-9992-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 06/13/2011] [Accepted: 06/17/2011] [Indexed: 10/18/2022]
Abstract
Bark beetles that colonize living conifers and their microbial associates encounter constitutive and induced chemical defenses of their host. Monoterpene hydrocarbons comprise a major component of these allelochemicals, and many are antibiotic to insects, fungi, and bacteria. Some bark beetle species exhaust these defenses by killing their host through mass attacks mediated by aggregation pheromones. Others lack adult aggregation pheromones and do not engage in pheromone-mediated mass attacks, but rather have the ability to complete development within live hosts. In the former species, the larvae develop in tissue largely depleted of host terpenes, whereas in the latter exposure to these compounds persists throughout development. A substantial literature exists on how monoterpenes affect bark beetles and their associated fungi, but little is known of how they affect bacteria, which in turn can influence beetle performance in various manners. We tested several bacteria from two bark beetle species for their ability to grow in the presence of a diversity of host monoterpenes. Bacteria were isolated from the mountain pine beetle, Dendroctonus ponderosae Hopkins, which typically kills trees during colonization, and the red turpentine beetle, Dendroctonus valens LeConte, which often lives in their host without causing mortality. Bacteria from D. ponderosae were gram-positive Actinobacteria and Bacilli; one yeast also was tested. Bacteria from D. valens were Actinobacteria, Bacilli, and γ-Proteobacteria. Bacteria from D. valens were more tolerant of monoterpenes than were those from D. ponderosae. Bacteria from D. ponderosae did not grow in the presence of α-pinene and 3-carene, and grew in, but were inhibited by, β-pinene and β-phellandrene. Limonene and myrcene had little inhibitory effect on bacteria from either beetle species. Tolerance to these antibiotic compounds appears to have resulted from adaptation to living in a terpene-rich environment.
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Davis TS, Hofstetter RW. Reciprocal interactions between the bark beetle-associated yeast Ogataea pini and host plant phytochemistry. Mycologia 2011; 103:1201-7. [PMID: 21659459 DOI: 10.3852/11-083] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Here we report the first experiments testing reciprocal effects between the bark beetle-associated yeast, Ogataea pini, and phytochemicals present in tree tissues (Pinus ponderosa). We tested two hypotheses: (i) tree phytochemicals mediate O. pini growth and (ii) O. pini affects chemical composition of plant tissues. We tested six monoterpenes on O. pini biomass growth in vitro and found that most monoterpenes inhibited O. pini growth; however mean O. pini biomass increased 21.5% when treated with myrcene and 75.5% when treated with terpinolene, relative to control. Ogataea pini was grown on phloem tissue ex vivo to determine whether O. pini affected phloem chemistry. Monoterpene concentrations declined in phloem over time, but phloem colonized by O. pini had significantly different concentrations of monoterpenes at two periods than phloem with no yeast. After 7 d, when O. pini was present, concentrations of the monoterpene Δ-3-carene was 42.9% lower than uncolonized phloem and concentrations of the monoterpene terpinolene was 345.0% higher than uncolonized phloem. After 15 d phloem colonized by O. pini had 505.4% higher concentrations of α-pinene than uncolonized phloem. These experiments suggest that O. pini responds to phytochemicals present in host tissues and the presence of O. pini might alter the chemical environment of phloem tissues during the early stages of beetle development. The interactions between O. pini and phytochemicals in pine vascular tissues might have consequences for the bark beetle that vectors O. pini, Dendroctonus brevicomis.
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Affiliation(s)
- Thomas S Davis
- School of Forestry, Northern Arizona University, Southwest Forest Science Complex (82), PO Box 15018, 200 E Pine Knoll Drive, Flagstaff, Arizona 86011-15018, USA.
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