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Ramezani Awal Riabi H, Ghazavi M. Evaluation of the effectiveness of two Iranian su-strains of Metarhizium anisopliae (ascomycota: hypocreales) on the mortality rate of American cockroach. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:1763-1775. [PMID: 37549248 DOI: 10.1080/09603123.2023.2243846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 07/26/2023] [Indexed: 08/09/2023]
Abstract
The cockroach is one of the most important disease vectors in world. Entomopathogenic fungi, as three concentrations of spores were taken 1.1 × 105, 1.1 × 107, and 1.1 × 109 conidia/mL from two isolates of Nour and Saravan-Iranian. In this study, the immersion method caused about 13% mortality only in isolation (1 × 109 conidia/mL) of Saravan isolates. Inoculation of isolates below the pronotum did not significantly differ the mortality rate between the two genera (P = 0.8), compared to the pathogenicity of three isolates of M. anisopliae (1.1 × 105, 1.1 × 107, and 1.1 × 109 conidia/mL). In total, Saravan and Nour isolates were 66%, 73%, and 93%, respectively, indicating a significant difference (P < 0.001). Mortality of male and female cockroaches with Saravan isolates respectively occurred 3 and 4 days after inoculation (LT50 = 4.3d), while for Nour isolates, in both sexes, mortality was observed within four days after the test (LT50 = 5.5d). Considering the results M. anisopliae can be one benefit methods for control American cockroach in the future. .
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Affiliation(s)
- Hamed Ramezani Awal Riabi
- Office disease control, Deputy Health, Research Center of Infectious Diseases, Gonabad University of Medical Sciences, Gonabad, Iran
- Infectious Diseases Research Center, Gonabad University of Medical Sciences, Gonabad, Teacher of Biology in schools, Tehran, Iran
| | - Mehran Ghazavi
- Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization, Tehran, Iran
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2
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Bamisile BS, Siddiqui JA, Nie L, Idrees A, Aguila LCR, Jia C, Xu Y. Baseline Analysis of Endophytic Fungal Associates of Solenopsis invicta Buren from Mounds across Five Counties of Guangdong Province, China. J Fungi (Basel) 2023; 9:jof9030377. [PMID: 36983545 PMCID: PMC10058942 DOI: 10.3390/jof9030377] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Red imported fire ants mounds have been suggested as a potential reservoir for beneficial entomopathogenic fungal species that are vital for more complex roles in the ecosystem aside from infecting the insects. In the current study, the assemblage of fungal symbionts of the red imported fire ants (RIFA) were obtained across five cities in Guangdong Province, China. The sampling areas were selected because of high occurrence of fire ants mounds in the regions. Mound soils, plant debris within mounds, and ants were collected from three sampling locations in each city for potential isolation of entomopathogenic fungal associates of RIFA. All samples were collected during the spring of 2021. Following successful isolation from substrates, the patterns of fungal species composition, and richness were evaluated. In total, 843 isolates were recovered, and based on their phenotypic distinctiveness and molecular characterization based on DNA sequences of multiple loci including the ITS, SSU, and LSU regions, 46 fungal taxa were obtained, including 12 that were unidentified. Species richness and abundance was highest in the mound soils, while the lowest value was recorded from the ant body. As per the different locations, the highest abundance level was recorded in Zhuhai, where 15 fungal taxa were cultivated. The most common taxa across all substrates and locations was Talaromyces diversus. A baseline analysis of the fungal community composition of RIFA would better our understanding on the interactions between these social ants and their associated microbial organisms, and this knowledge in turn would be important for the successful management of the RIFA.
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Affiliation(s)
- Bamisope Steve Bamisile
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China
| | - Junaid Ali Siddiqui
- College of Agriculture, College of Tobacco Science, Guizhou University, Guiyang 550025, China
| | - Lei Nie
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
| | - Atif Idrees
- Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Scientific Observing and Experimental Station of Crop Pest in Guiyang, Ministry of Agriculture, Institute of Entomology, Guizhou University, Guiyang 550025, China
| | - Luis Carlos Ramos Aguila
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Chunsheng Jia
- Henry Fok School of Biology and Agriculture, Shaoguan University, Shaoguan 512005, China
| | - Yijuan Xu
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China
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3
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Barzanti GP, Enkerli J, Benvenuti C, Strangi A, Mazza G, Torrini G, Simoncini S, Paoli F, Marianelli L. Genetic variability of Metarhizium isolates from the Ticino Valley Natural Park (Northern Italy) as a possible microbiological resource for the management of Popillia japonica. J Invertebr Pathol 2023; 197:107891. [PMID: 36716929 DOI: 10.1016/j.jip.2023.107891] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/17/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023]
Abstract
The natural occurrence of entomopathogenic fungi (EPF) was investigated along the Ticino River (Ticino River Natural Park, Novara Province, Piedmont, Italy), at the center of the area of the first settlement of the invasive alien pest Popillia japonica. Using Zimmermann's "Galleria bait method", EPF were successfully isolated from 83 out of 155 soil samples from different habitats (perennial, cultivated, or uncultivated meadows, woodlands, and riverbanks). Sequencing of the 5' end of the Translation Elongation Factor 1 alfa (5'-TEF) region allowed the assignment of 94% of the isolates to Metarhizium spp., while 8% and 7% were assigned to Beauveria spp. and Paecilomyces spp., respectively. Four Metarhizium species were identified: Metarhizium robertsii was the most common one (61.5% of the isolates), followed by M. brunneum (24.4%), M. lepidiotae (9%), and M. guizhouense (5.1%). Microsatellite marker analysis of the Metarhizium isolates revealed the presence of 27 different genotypes, i.e., 10 genotypes among M. robertsii, 8 among M. brunneum, 5 among M. lepidiotae, and 4 among M. guizhouense. Metarhizium brunneum appeared to be associated with woodlands and more acid soils, while the other species showed no clear association with a particular habitat. Laboratory virulence tests against P. japonica 3rd instar larvae allowed the identification of one M. robertsii isolate that showed efficacy as high as 80.3%. The importance of this kind of study in the frame of eco-friendly microbiological control is discussed.
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Affiliation(s)
- Gian Paolo Barzanti
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy.
| | - Jürg Enkerli
- AGROSCOPE Institute for Sustainability Sciences ISS, Molecular Ecology, 8046 Zürich, Switzerland
| | - Claudia Benvenuti
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Agostino Strangi
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Giuseppe Mazza
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Giulia Torrini
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Stefania Simoncini
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Francesco Paoli
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
| | - Leonardo Marianelli
- CREA Research Centre for Plant Protection and Certification, 50125 Florence, Italy
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Hu Y, Jiang X, Shao K, Tang X, Qin B, Gao G. Convergency and Stability Responses of Bacterial Communities to Salinization in Arid and Semiarid Areas: Implications for Global Climate Change in Lake Ecosystems. Front Microbiol 2022; 12:741645. [PMID: 35058891 PMCID: PMC8764409 DOI: 10.3389/fmicb.2021.741645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 11/30/2021] [Indexed: 11/13/2022] Open
Abstract
Climate change has given rise to salinization and nutrient enrichment in lake ecosystems of arid and semiarid areas, which have posed the bacterial communities not only into an ecotone in lake ecosystems but also into an assemblage of its own unique biomes. However, responses of bacterial communities to climate-related salinization and nutrient enrichment remain unclear. In September 2019, this study scrutinized the turnover of bacterial communities along gradients of increasing salinity and nutrient by a space-for-time substitution in Xinjiang Uyghur Autonomous Region, China. We find that salinization rather than nutrient enrichment primarily alters bacterial communities. The homogenous selection of salinization leads to convergent response of bacterial communities, which is revealed by the combination of a decreasing β-nearest taxon index (βNTI) and a pronounced negative correlation between niche breadth and salinity. Furthermore, interspecific interactions within bacterial communities significantly differed among distinct salinity levels. Specifically, mutualistic interactions showed an increase along the salinization. In contrast, topological parameters show hump-shaped curves (average degree and density) and sunken curves (modularity, density, and average path distance), the extremums of which all appear in the high-brackish environment, hinting that bacterial communities are comparatively stable at freshwater and brine environments but are unstable in moderately high-brackish lake.
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Affiliation(s)
| | | | | | | | | | - Guang Gao
- Taihu Laboratory for Lake Ecosystem Research, State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China
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Dávila-Orozco G, Cruz-Salazar B, Ruiz-Montoya L. How Does the Application of Beauveria bassiana and Compost on Corn Crops Affect the Survival and Genetic Diversity of Phyllophaga obsoleta (Coleoptera: Melolonthinae)? ENVIRONMENTAL ENTOMOLOGY 2021; 50:1227-1240. [PMID: 34164658 DOI: 10.1093/ee/nvab054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Indexed: 06/13/2023]
Abstract
The knowledge of the diversity and genetic structure of pest insects under management contributes to the improvement of control strategies. An experiment was run to investigate whether the addition of the fungus Beauveria bassiana (Balsamo) Vuillemin (Hypocreales: Cordycipitaceae) (BB) and compost to soil affects the presence and genetic diversity of adults and larvae of Phyllophaga obsoleta Blanch (Coleoptera: Melolonthinae) larvae in maize crops. We collected adults in and used mating pairs under four treatments (BB, compost, soil, blank). Genetic diversity and structure were determined through five allo/iso-enzymatic loci. Beauveria bassiana affected the presence and mortality of P. obsoleta in the laboratory but not under field conditions. The genetic diversity of P. obsoleta ranged from moderate to high (Ho = 0.26-0.31), with a low genetic differentiation among localities or treatments (Phi < 0.05), indicating high levels of gene flow. Our results showed a weak effect of B. bassiana on P. obsoleta in the field. Still, our laboratory observations suggest that the fungus may be a suitable alternative for biological control.
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Affiliation(s)
- Guillermo Dávila-Orozco
- Programa de Pós-Graduação em Biologia Animal, Universidade Federal de Pelotas, Pelotas RS, Brazil
| | - Bárbara Cruz-Salazar
- Centro Tlaxcala de Biología de la Conducta, CONACYT-Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Lorena Ruiz-Montoya
- Departamento de Conservación de la Biodiversidad, El Colegio de la Frontera Sur, San Cristóbal de Las Casas, Chiapas, Mexico
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Bamisile BS, Siddiqui JA, Akutse KS, Ramos Aguila LC, Xu Y. General Limitations to Endophytic Entomopathogenic Fungi Use as Plant Growth Promoters, Pests and Pathogens Biocontrol Agents. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10102119. [PMID: 34685928 PMCID: PMC8540635 DOI: 10.3390/plants10102119] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 09/23/2021] [Indexed: 05/31/2023]
Abstract
The multiple roles of fungal entomopathogens in host plants' growth promotion, pest and pathogen management have drawn huge attention for investigation. Endophytic species are known to influence various activities of their associated host plants, and the endophyte-colonized plants have been demonstrated to gain huge benefits from these symbiotic associations. The potential application of fungal endophytes as alternative to inorganic fertilizers for crop improvement has often been proposed. Similarly, various strains of insect pathogenic fungi have been formulated for use as mycopesticides and have been suggested as long-term replacement for the synthetic pesticides that are commonly in use. The numerous concerns about the negative effects of synthetic chemical pesticides have also driven attention towards developing eco-friendly pest management techniques. However, several factors have been underlined to be militating the successful adoption of entomopathogenic fungi and fungal endophytes as plant promoting, pests and diseases control bio-agents. The difficulties in isolation and characterization of novel strains, negative effects of geographical location, vegetation type and human disturbance on fungal entomopathogens, are among the numerous setbacks that have been documented. Although, the latest advances in biotechnology and microbial studies have provided means of overcoming many of these problems. For instance, studies have suggested measures for mitigating the negative effects of biotic and abiotic stressors on entomopathogenic fungi in inundative application on the field, or when applied in the form of fungal endophytes. In spite of these efforts, more studies are needed to be done to achieve the goal of improving the overall effectiveness and increase in the level of acceptance of entomopathogenic fungi and their products as an integral part of the integrated pest management programs, as well as potential adoption as an alternative to inorganic fertilizers and pesticides.
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Affiliation(s)
| | - Junaid Ali Siddiqui
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China;
| | - Komivi Senyo Akutse
- Plant Health Theme, International Centre of Insect Physiology and Ecology, Nairobi 00100, Kenya;
| | - Luis Carlos Ramos Aguila
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
| | - Yijuan Xu
- Department of Entomology, South China Agricultural University, Guangzhou 510642, China;
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Land-Use Type Drives Soil Population Structures of the Entomopathogenic Fungal Genus Metarhizium. Microorganisms 2021; 9:microorganisms9071380. [PMID: 34202058 PMCID: PMC8303860 DOI: 10.3390/microorganisms9071380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/21/2021] [Accepted: 06/22/2021] [Indexed: 11/24/2022] Open
Abstract
Species of the fungal genus Metarhizium are globally distributed pathogens of arthropods, and a number of biological control products based on these fungi have been commercialized to control a variety of pest arthropods. In this study, we investigate the abundance and population structure of Metarhizium spp. in three land-use types—arable land, grassland, and forest—to provide detailed information on habitat selection and the factors that drive the occurrence and abundance of Metarhizium spp. in soil. At 10 sites of each land-use type, which are all part of the Swiss national soil-monitoring network (NABO), Metarhizium spp. were present at 8, 10, and 4 sites, respectively. On average, Metarhizium spp. were most abundant in grassland, followed by forest and then arable land; 349 Metarhizium isolates were collected from the 30 sites, and sequence analyses of the nuclear translation elongation factor 1α gene, as well as microsatellite-based genotyping, revealed the presence of 13 Metarhizium brunneum, 6 Metarhizium robertsii, and 3 Metarhizium guizhouense multilocus genotypes (MLGs). With 259 isolates, M. brunneum was the most abundant species, and significant differences were detected in population structures between forested and unforested sites. Among 15 environmental factors assessed, C:N ratio, basal respiration, total carbon, organic carbon, and bulk density significantly explained the variation among the M. brunneum populations. The information gained in this study will support the selection of best-adapted isolates as biological control agents and will provide additional criteria for the adaptation or development of new pest control strategies.
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Xie F, Zhang G, Zheng Q, Liu K, Yin X, Sun X, Saud S, Shi Z, Yuan R, Deng W, Zhang L, Cui G, Chen Y. Beneficial Effects of Mixing Kentucky Bluegrass With Red Fescue via Plant-Soil Interactions in Black Soil of Northeast China. Front Microbiol 2020; 11:556118. [PMID: 33193137 PMCID: PMC7656059 DOI: 10.3389/fmicb.2020.556118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 09/28/2020] [Indexed: 12/26/2022] Open
Abstract
Continuous monoculture of cool-season turfgrass causes soil degradation, and visual turf quality decline is a major concern in black soil regions of Northeast China. Turf mixtures can enhance turfgrass resistance to biotic and abiotic stresses and increase soil microbial diversity. Understanding mechanism by plant-soil interactions and changes of black soil microbial communities in turf mixture is beneficial to restoring the degradation of urbanized black soils and maintaining sustainable development of urban landscape ecology. In this study, based on the previous research of different sowing models, two schemes of turf monoculture and mixture were conducted in field plots during 2016-2018 in a black soil of Heilongjiang province of Northeast China. The mixture turf was established by mixing 50% Kentucky bluegrass "Midnight" (Poa pratensis L.) with 50% Red fescue "Frigg" (Festuca rubra L.); and the monoculture turf was established by sowing with pure Kentucky bluegrass. Turf performance, soil physiochemical properties, and microbial composition from rhizosphere were investigated. Soil microbial communities and abundance were analyzed by Illumina MiSeq sequencing and quantitative PCR methods. Results showed that turfgrass quality, turfgrass biomass, soil organic matter (SOM), urease, alkaline phosphatase, invertase, and catalase activities increased in PF mixture, but disease percentage and soil pH decreased. The microbial diversity was also significantly enhanced under turf mixture model. The microbial community compositions were significantly different between the two schemes. Turf mixtures obviously increased the abundances of Beauveria, Lysobacter, Chryseolinea, and Gemmatimonas spp., while remarkably reduced the abundances of Myrothecium and Epicoccum spp. Redundancy analysis showed that the compositions of bacteria and fungi were related to edaphic parameters, such as SOM, pH, and enzyme activities. Since the increasing of turf quality, biomass, and disease resistance were highly correlated with the changes of soil physiochemical parameters and microbial communities in turf mixture, which suggested that turf mixture with two species (i.e., Kentucky blue grass and Red fescue) changed soil microbial communities and enhanced visual turfgrass qualities through positive plant-soil interactions by soil biota.
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Affiliation(s)
- Fuchun Xie
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Gaoyun Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Qianjiao Zheng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Kemeng Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China.,Beijing Oriental Garden Environment Co., Ltd, Beijing, China
| | - Xiujie Yin
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Xiaoyang Sun
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Shah Saud
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Zhenjie Shi
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Runli Yuan
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Wenjing Deng
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Lu Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
| | - Guowen Cui
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Yajun Chen
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, China
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Presa-Parra E, Hernández-Rosas F, Bernal JS, Valenzuela-González JE, Altúzar-Molina A, Birke A. Occurrence, Identification, and Virulence of Native Fungal Pathogens Isolated From Mexican Fruit Fly (Diptera: Tephritidae) Larvae From Soils of Three Cropping Systems. JOURNAL OF ECONOMIC ENTOMOLOGY 2020; 113:1088-1096. [PMID: 31993643 DOI: 10.1093/jee/toaa012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Indexed: 06/10/2023]
Abstract
The Mexican fruit fly, Anastrepha ludens Loew, is a significant pest in mango and citrus production areas of Mexico. In this study, we evaluated the effects of some geographic characteristics, rainfall period, soil micro-environmental, and soil coverage variables on the occurrence of entomopathogenic fungi (EPF) associated with A. ludens larvae in soils of mango, grapefruit and mixed crops in central Veracruz state, Mexico. EPF isolates were characterized morphologically and identified by sequence analysis of elongation factor (EF1-1018F, EF1-1620R). We recorded four species of EPF (Metarhizium robertsii J.F. Bisch, S.A. Rehner & Humber [Hypocreales: Cordycipitaceae], M. brunneum Petch [Hypocreales: Cordycipitaceae], M. pinghaense Q.T. Chen & H.L. Guo [Hypocreales: Cordycipitaceae], and Beauveria bassiana (Balsamo) Vuillemin [Hypocreales: Cordycipitaceae]), of which Metarhizium robertsii was the most abundant and the most virulent. Also, we found that rainfall period, organic matter, coverage of herbs and forbs, and calcium levels modulated EPF occurrence. We estimated lethal concentrations for A. ludens larvae of the four most promising isolates, V3-123, V3-160, V1-332, and V3-369. Our results suggest that M. robertsii obtained from agricultural soils holds potential as a biological control agent for A. ludens.
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Affiliation(s)
- Ehdibaldo Presa-Parra
- Clúster Científico y Tecnológico BioMimic, Red de Manejo Biorracional de Plagas y Vectores, Instituto de Ecología A.C., Xalapa, Veracruz, México
| | - Francisco Hernández-Rosas
- Biotecnología Microbiana Aplicada, Colegio de Postgraduados, Campus Córdoba, Amatlán de los Reyes, Veracruz, México
| | - Julio S Bernal
- Department of Entomology, Texas A&M University, College Station, TX, México
| | | | - Alma Altúzar-Molina
- Clúster Científico y Tecnológico BioMimic, Red de Manejo Biorracional de Plagas y Vectores, Instituto de Ecología A.C., Xalapa, Veracruz, México
| | - Andrea Birke
- Clúster Científico y Tecnológico BioMimic, Red de Manejo Biorracional de Plagas y Vectores, Instituto de Ecología A.C., Xalapa, Veracruz, México
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10
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Bueno-Pallero FÁ, Blanco-Pérez R, Vicente-Díez I, Rodríguez Martín JA, Dionísio L, Campos-Herrera R. Patterns of Occurrence and Activity of Entomopathogenic Fungi in the Algarve (Portugal) Using Different Isolation Methods. INSECTS 2020; 11:insects11060352. [PMID: 32512919 PMCID: PMC7348715 DOI: 10.3390/insects11060352] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/22/2020] [Accepted: 05/28/2020] [Indexed: 11/30/2022]
Abstract
Entomopathogenic fungi (EPF) are distributed in natural and agricultural soils worldwide. To investigate EPF occurrence in different botanical habitats and soil-ecoregions, we surveyed 50 georeferenced localities in the spring of 2016 across the Algarve region (South Portugal). Additionally, we compared three EPF isolation methods: insect baiting in untreated or pre-dried-soil and soil dilution plating on a selective medium. We hypothesized that forest habitats (oak and pine semi-natural areas) and the acidic soil ecoregion may favor EPF occurrence. Overall, EPF species were present in 68% of sites, widely distributed throughout the Algarve. The use of selective media resulted in higher recovery of EPF than did either soil-baiting method. Contrary to our hypothesis, neither vegetation type nor ecoregion appeared to influence EPF occurrence. Traditional and molecular methods confirmed the presence of five EPF species. Beauveria bassiana (34% of sites), was the most frequently detected EPF, using pre-dried soil baiting and soil dilution methods. However, baiting untreated soil recovered Fusarium solani more frequently (26% of sites), demonstrating the utility of using multiple isolation methods. We also found Fusarium oxysporum, Purpureocillium lilacinum and Metarhizium anisopliae in 14%, 8% and 2% of the sites, respectively. Three abiotic variables (pH, soil organic matter and Mg) explained 96% of the variability of the entomopathogen community (EPF and entomopathogenic nematodes) in a canonical correspondence analysis, confirming the congruence of the soil properties that drive the assemblage of both entomopathogens. This study expands the knowledge of EPF distribution in natural and cultivated Mediterranean habitats.
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Affiliation(s)
- Francisco Ángel Bueno-Pallero
- UDIT MED—Mediterranean Institute for Agriculture, Environment and Development, Pólo, Universidade do Algarve, Campus de Gambelas, Ed 8, 8005-139 Faro, Portugal; (F.Á.B.-P.); (L.D.)
| | - Rubén Blanco-Pérez
- Departamento de Viticultura, Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja, CSIC, Universidad de La Rioja), Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño, Spain; (R.B.-P.); (I.V.-D.)
| | - Ignacio Vicente-Díez
- Departamento de Viticultura, Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja, CSIC, Universidad de La Rioja), Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño, Spain; (R.B.-P.); (I.V.-D.)
| | - José Antonio Rodríguez Martín
- Departamento de Medioambiente, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA, Ctra. de la Coruña, km 7.5, 28040 Madrid, Spain;
| | - Lídia Dionísio
- UDIT MED—Mediterranean Institute for Agriculture, Environment and Development, Pólo, Universidade do Algarve, Campus de Gambelas, Ed 8, 8005-139 Faro, Portugal; (F.Á.B.-P.); (L.D.)
- Departamento de Ciencias Biológicas e Biotecnologia, Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, Ed 8, 8005-139 Faro, Portugal
| | - Raquel Campos-Herrera
- Departamento de Viticultura, Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja, CSIC, Universidad de La Rioja), Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño, Spain; (R.B.-P.); (I.V.-D.)
- Correspondence: ; Tel.: +34-941-894980
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11
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Distribution and genetic diversity of Beauveria species at different soil depths in natural and agricultural ecosystems. Mycol Prog 2019. [DOI: 10.1007/s11557-019-01520-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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