1
|
Włóka E, Boguś MI, Wrońska AK, Drozdowski M, Kaczmarek A, Sobich J, Gołębiowski M. Insect cuticular compounds affect Conidiobolus coronatus (Entomopthorales) sporulation and the activity of enzymes involved in fungal infection. Sci Rep 2022; 12:13641. [PMID: 35948615 PMCID: PMC9365854 DOI: 10.1038/s41598-022-17960-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 08/03/2022] [Indexed: 11/09/2022] Open
Abstract
Mycoses are a global problem that affects humans and animals. In the present study, the entomopathogenic soil fungus Conidiobolus coronatus (Entomophthorales), infecting in tropics also humans, sheep and horses, was cultivated with the addition of insect cuticular compounds (CCs) previously detected in the cuticle of C. coronatus-resistant fly species (C10-C30 fatty alcohols, butyl oleate, butyl stearate, glycerol oleate, squalene, tocopherol acetate). Our findings indicate that CCs have diversified and complex effects on the growth and sporulation of C. coronatus and its ability to infect the larvae of Galleria mellonella (Lepidoptera). The CCs affected protein content and cuticle-degrading enzymes (CDEs) activity in the conidia. Some CCs inhibited fungal growth (0.1% C10), decreased sporulation (C12, C16, C24, C28, C30, butyl stearate, squalene), virulence (C12, C14, butyl oleate, butyl stearate) and protein content (C18). They also reduced conidial CDE activity: elastase (C24, butyl oleate, butyl stearate, squalene, tocopherol acetate), chitobiosidase (C12, C14, C20) and lipase (C12, C18, C26, squalene, tocopherol acetate). Several CCs enhanced sporulation (C14, C18, C22, C26, C30), virulence (C18, C26, squalene), conidial protein content (C16, C24, C30, squalene) and CDE activity: elastase (C10, C16, C18), NAGase (C16, C20), chitobiosidase (C16) and lipase (C10, C14, C16, C20, butyl oleate). Our findings indicate that C. coronatus colonies grown on media supplemented with CCs employ various compensation strategies: colonies grown with C16 alcohol demonstrated reduced sporulation but greater conidial protein accumulation and increased elastase, NAGase, chitobiosidase and lipase activity, thus preserving high virulence. Also, colonies supplemented with C18 alcohol demonstrated high virulence and enhanced sporulation and elastase activity but slightly decreased conidial protein content. CCs that inhibit the activity of lipases and proteases show promise in the fight against conidiobolomycosis.
Collapse
Affiliation(s)
- Emilia Włóka
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Mieczysława Irena Boguś
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland.
| | - Anna Katarzyna Wrońska
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Mikołaj Drozdowski
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Agata Kaczmarek
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Justyna Sobich
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Marek Gołębiowski
- Laboratory of Analysis of Natural Compounds, Department of Environmental Analysis, Faculty of Chemistry, University of Gdańsk, ul. Wita Stwosza 63, 80-308, Gdańsk, Poland
| |
Collapse
|
2
|
Fungi as a Gold Mine of Antioxidants. Fungal Biol 2021. [DOI: 10.1007/978-3-030-85603-8_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
3
|
Kim S, Kim JC, Lee SJ, Lee MR, Park SE, Li D, Baek S, Shin TY, Kim JS. Beauveria bassiana ERL836 and JEF-007 with similar virulence show different gene expression when interacting with cuticles of western flower thrips, Frankniella occidentalis. BMC Genomics 2020; 21:836. [PMID: 33246406 PMCID: PMC7694944 DOI: 10.1186/s12864-020-07253-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Accepted: 11/18/2020] [Indexed: 01/12/2023] Open
Abstract
Background Insect-killing fungal species, Beauveria bassiana, is as an environment-friendly pest management tool, and many isolates are on the track of industrialization. However, some of B. bassiana isolates show similar morphology and virulence against insect pests, and so it is hard to differentiate them. Herein we used two patented isolates, ERL836 and JEF-007, and investigated their virulence against western flower thrips, Frankliniella occidentalis, and further analyzed genome structures and transcriptional responses when interacting with cuticles of thrips to see possible differences on the initial step of fungal infection. Results The two isolates showed no significant differences in fungal growth, conidial production, and virulence against thrips, and they were structurally similar in genome. But, in transcription level, ERL836 appeared to infect thrips easily, while JEF-007 appeared to have more difficulty. In the GO analysis of ERL836 DEGs (differentially expressed genes), the number of up-regulated genes was much larger than that of down-regulated genes, when compared to JEF-007 DEGs (more genes down-regulated). Interestingly, in the enrichment analysis using shared DEGs between two infecting isolates, plasma membrane-mediated transporter activity and fatty acid degradation pathway including cytochrome P450 were more active in infecting ERL836. Conclusion The two B. bassiana isolates had similar morphology and virulence as well as genome structure, but in transcription level they differently interacted with the cuticle of western flower thrips. This comparative approach using shared DEG analysis could be easily applied to characterize the difference of the two B. bassiana isolates, JEF-007 and ERL836. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-020-07253-y.
Collapse
Affiliation(s)
- Sihyeon Kim
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Jong Cheol Kim
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Se Jin Lee
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL, 32611-0700, USA
| | - Mi Rong Lee
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - So Eun Park
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Dongwei Li
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Sehyeon Baek
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Tae Young Shin
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea
| | - Jae Su Kim
- Department of Agricultural Biology, Jeonbuk National University, Jeonju, 54596, South Korea. .,Department of Agricultural Convergence Technology, Jeonbuk National University, Jeonju, 54596, South Korea.
| |
Collapse
|
4
|
Kaczmarek A, Boguś MI, Włóka E, Wrońska AK, Krawiel A, Kazek M, Zalewska K, Kłocińska-Biały K, Sobocińska M, Gliniewicz A, Mikulak E, Matławska M. The interaction between cuticle free fatty acids (FFAs) of the cockroaches Blattella germanica and Blatta orientalis and hydrolases produced by the entomopathogenic fungus Conidiobolus coronatus. PLoS One 2020; 15:e0235785. [PMID: 32645074 PMCID: PMC7347226 DOI: 10.1371/journal.pone.0235785] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/22/2020] [Indexed: 11/24/2022] Open
Abstract
The interactions between entomopathogenic fungi and insects serve a classic example of a co-evolutionary arms race between pathogens and their target host. The cuticle, site of the first contact between insects and entomopathogenic fungus, is an important defensive barrier against pathogens. It is covered by a layer of lipids that appears to play a key role in these processes and cuticular free fatty acid (FFA) profiles are consider as a determinant of susceptibility, or resistance, to fungal infections. These profiles are species-specific. The cockroaches Blattella germanica (Blattodea: Blattidae) and Blatta orientalis (Blattodea: Ectobiidae) are unsusceptible to the soil fungus Conidiobolus coronatus (Entomophthorales: Ancylistaceae) infection, therefore we studied the profiles of FFAs in order to understand the defensive capabilities of the cockroaches. The fungus was cultivated for three weeks in minimal medium. Cell-free filtrate was obtained, assayed for elastase, N-acetylglucosaminidase, chitobiosidase and lipase activity, and then used for in vitro hydrolysis of the cuticle from wings and thoraces of adults and oothecae. The amounts of amino acids, N-glucosamine and FFAs released from the hydrolysed cuticle samples were measured after eight hours of incubation. The FFA profiles of the cuticle of adults, and the wings, thoraces and oothecae of both species were established using GC-MS and the results were correlated with the effectiveness of fungal proteases, chitinases and lipases in the hydrolyzation of cuticle samples. Positive correlations would suggest the existence of compounds used by the fungus as nutrients, whereas negative correlations may indicate that these compounds could be engaged in insect defence.
Collapse
Affiliation(s)
- Agata Kaczmarek
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
| | - Mieczysława Irena Boguś
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
- BIOMIBO, Warsaw, Poland
| | - Emilia Włóka
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
| | | | | | - Michalina Kazek
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Warsaw, Poland
| | | | | | | | | | - Ewa Mikulak
- National Institute of Public Health–National Institute of Hygiene, Warsaw, Poland
| | - Marta Matławska
- National Institute of Public Health–National Institute of Hygiene, Warsaw, Poland
| |
Collapse
|
5
|
Vujanovic V, Islam MN, Daida P. Transgenerational role of seed mycobiome - an endosymbiotic fungal composition as a prerequisite to stress resilience and adaptive phenotypes in Triticum. Sci Rep 2019; 9:18483. [PMID: 31811154 PMCID: PMC6898677 DOI: 10.1038/s41598-019-54328-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 11/08/2019] [Indexed: 12/16/2022] Open
Abstract
Illumina-MiSeq next-generation sequencing of ITS 5.8S rRNA gene demonstrated the transgenerational transmission of fungal seed-endophytes (mycobiome) across three consecutive wheat host generations under standard-control and drought conditions in the greenhouse. Drought-stressed plants experienced a positive shift in the seed mycobiome's composition, moderated by the external acquisition of endophytic Penicillium (E+) at the seed level. Untreated (E-) and unstressed plants harbor a maximal fungal diversity of non-equilibrium ecological communities. While fungal composition in drought-stressed E- plants experienced important fluctuation, E+ plants maintained fungal ecological communities in phase equilibrium across generations. E+ plants hosted a relatively higher abundance of Ascomycota in the 2nd and 3rd seed generations of wheat, whereas higher abundance of Basidiomycota was detected in 1st generation seeds. The dynamic response of ecological communities to environmental stress is conducive to E+ plants' active recruitment of endosymbiotic consortia in seeds, benefiting host stress resilience and phenotype. In contrast, E- plants showed an erratic distribution of detected OTUs with an increased occurrence of phytopathogens and diminished plant performance under stress. The present study gives insight into the understanding of the seed-mycobiome composition and dynamics with the potential to improve plant host traits in an adverse environment.
Collapse
Affiliation(s)
- Vladimir Vujanovic
- Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, S7N 5A8, Canada.
| | - M Nazrul Islam
- Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, S7N 5A8, Canada
| | - Prasad Daida
- Department of Food and Bioproduct Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, S7N 5A8, Canada
| |
Collapse
|
6
|
Abstract
The pathogenic entomophthoralean fungi cause infection in insects and mammalian hosts. Basidiobolus and Conidiobolus species can be found in soil and insect, reptile, and amphibian droppings in tropical and subtropical areas. The life cycles of these fungi occur in these environments where infecting sticky conidia are developed. The infection is acquired by insect bite or contact with contaminated environments through open skin. Conidiobolus coronatus typically causes chronic rhinofacial disease in immunocompetent hosts, whereas some Conidiobolus species can be found in immunocompromised patients. Basidiobolus ranarum infection is restricted to subcutaneous tissues but may be involved in intestinal and disseminated infections. Its early diagnosis remains challenging due to clinical similarities to other intestinal diseases. Infected tissues characteristically display eosinophilic granulomas with the Splendore-Höeppli phenomenon. However, in immunocompromised patients, the above-mentioned inflammatory reaction is absent. Laboratory diagnosis includes wet mount, culture serological assays, and molecular methodologies. The management of entomophthoralean fungi relies on traditional antifungal therapies, such as potassium iodide (KI), amphotericin B, itraconazole, and ketoconazole, and surgery. These species are intrinsically resistant to some antifungals, prompting physicians to experiment with combinations of therapies. Research is needed to investigate the immunology of entomophthoralean fungi in infected hosts. The absence of an animal model and lack of funding severely limit research on these fungi.
Collapse
Affiliation(s)
- Raquel Vilela
- Biomedical Laboratory Diagnostics, Michigan State University, East Lansing, Michigan, USA
- Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Leonel Mendoza
- Biomedical Laboratory Diagnostics, Michigan State University, East Lansing, Michigan, USA
- Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| |
Collapse
|
7
|
Wang J, Zhou X, Guo K, Zhang X, Lin H, Montalva C. Transcriptomic insight into pathogenicity-associated factors of Conidiobolus obscurus, an obligate aphid-pathogenic fungus belonging to Entomopthoromycota. PEST MANAGEMENT SCIENCE 2018; 74:1677-1686. [PMID: 29337410 DOI: 10.1002/ps.4861] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/17/2017] [Accepted: 01/10/2018] [Indexed: 06/07/2023]
Abstract
BACKGROUND Conidiobolus obscurus is a widespread fungal entomopathogen with aphid biocontrol potential. This study focused on a de novo transcriptomic analysis of C. obscurus. RESULTS A number of pathogenicity-associated factors were annotated for the first time from the assembled 17 231 fungal unigenes, including those encoding subtilisin-like proteolytic enzymes (Pr1s), trypsin-like proteases, metalloproteases, carboxypeptidases and endochitinases. Many of these genes were transcriptionally up-regulated by at least twofold in mycotized cadavers compared with the in vitro fungal cultures. The resultant transcriptomic database was validated by the transcript levels of three selected pathogenicity-related genes quantified from different in vivo and in vitro material in real-time quantitative polymerase chain reaction (PCR). The involvement of multiple Pr1 proteases in the first stage of fungal infection was also suggested. Interestingly, a unique cytolytic (Cyt)-like δ-endotoxin gene was highly expressed in both mycotized cadavers and fungal cultures, and was more or less distinct from its homologues in bacteria and other fungi. CONCLUSION Our findings provide the first global insight into various pathogenicity-related genes in this obligate aphid pathogen and may help to develop novel biocontrol strategy against aphid pests. © 2018 Society of Chemical Industry.
Collapse
Affiliation(s)
- Jianghong Wang
- National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, School of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Lin'an, People's Republic of China
| | - Xiang Zhou
- National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, School of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Lin'an, People's Republic of China
- Department of Biological Sciences, University of Wisconsin, Milwaukee, WI, USA
| | - Kai Guo
- National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, School of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Lin'an, People's Republic of China
| | - Xinqi Zhang
- National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, School of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Lin'an, People's Republic of China
| | - Haiping Lin
- National Joint Local Engineering Laboratory for High-Efficient Preparation of Biopesticide, School of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Lin'an, People's Republic of China
| | - Cristian Montalva
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| |
Collapse
|
8
|
Keyhani NO. Lipid biology in fungal stress and virulence: Entomopathogenic fungi. Fungal Biol 2018; 122:420-429. [DOI: 10.1016/j.funbio.2017.07.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/11/2017] [Accepted: 07/13/2017] [Indexed: 12/17/2022]
|
9
|
Wrońska AK, Boguś MI, Włóka E, Kazek M, Kaczmarek A, Zalewska K. Cuticular fatty acids of Galleria mellonella (Lepidoptera) inhibit fungal enzymatic activities of pathogenic Conidiobolus coronatus. PLoS One 2018. [PMID: 29518079 PMCID: PMC5843172 DOI: 10.1371/journal.pone.0192715] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The entomopathogenic fungus Conidiobolus coronatus produces enzymes that may hydrolyze the cuticle of Galleria mellonella. Of these enzymes, elastase activity was the highest: this figure being 24 times higher than NAGase activity 553 times higher than chitinase activity and 1844 times higher than lipase activity. The present work examines the differences in the hydrolysis of cuticles taken from larvae, pupae and adults (thorax and wings), by C. coronatus enzymes. The cuticles of the larvae and adult thorax were the most susceptible to digestion by proteases and lipases. Moreover, the maximum concentration of free N-glucosamine was in the hydrolysis of G. mellonella thorax. These differences in the digestion of the various types of cuticle may result from differences in their composition. GC-MS analysis of the cuticular fatty acids isolated from pupae of G. mellonella confirmed the presence of C 8:0, C 9:0, C 12:0, C 14:0, C 15:0, C 16:1, C 16:0, C 17:0, C 18:1, C 18:0, with C 16:0 and C 18:0 being present in the highest concentrations. Additional fatty acids were found in extracts from G. mellonella imagines: C 10:0, C 13:0, C 20:0 and C 20:1, with a considerable dominance of C 16:0 and C 18:1. In larvae, C 16:0 and C 18:1 predominated. Statistically significant differences in concentration (p≤0.05) were found between the larvae, pupae and imago for each fatty acid. The qualitative and quantitative differences in the fatty acid composition of G. mellonella cuticle occurring throughout normal development might be responsible for the varied efficiency of fungal enzymes in degrading larval, pupal and adult cuticles.
Collapse
Affiliation(s)
- Anna Katarzyna Wrońska
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
- * E-mail:
| | - Mieczysława Irena Boguś
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
- BIOMIBO, Warsaw, Poland
| | - Emilia Włóka
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Michalina Kazek
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | - Agata Kaczmarek
- Witold Stefański Institute of Parasitology, Polish Academy of Sciences, Twarda, Warsaw, Poland
| | | |
Collapse
|
10
|
Hameed A, Hussain SA, Yang J, Ijaz MU, Liu Q, Suleria HAR, Song Y. Antioxidants Potential of the Filamentous Fungi (Mucor circinelloides). Nutrients 2017; 9:E1101. [PMID: 28991177 PMCID: PMC5691717 DOI: 10.3390/nu9101101] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/21/2017] [Accepted: 09/29/2017] [Indexed: 12/25/2022] Open
Abstract
Three important strains of Mucorcircinelloides grown in complete and minimal media for specified period (72 h, 120 h and 168 h) under submerged fermentation conditions were investigated for their potential antioxidants/secondary metabolite production. All mycelial extracts demonstrated effective antioxidant activities in terms of β-carotene/linoleic acid bleaching, radical scavenging, reduction of metal ions and chelating abilities against ferrous ions. Different extraction methods and solvent systems affected the recovery yield and antioxidant activities of the extracts significantly (p ≤ 0.05). Ethanolic extracts were found to be rich source of antioxidant components and subsequently more effective in antioxidant properties. Fermentation period and media used also significantly affected (p ≤ 0.05) the antioxidant production and the resulting antioxidant properties. The (ethanolic) extracts of all the strains from late exponential growth phase (120 h) showed highest antioxidant production with topmost reducing, chelating and radical scavenging capabilities. Strain MC277.49 was found to be the highest producer of antioxidants followed by MC108.16 and WJ11. Phenolic compounds were detected significantly in higher (p ≤ 0.05) amount succeeded by the condensed tannins and flavonoids. Total phenol content of each extract was attributed to overall antioxidant capacity. Submerged fermentation with nutritional stress conditions were found to be excellent way of producing surplus amount of natural antioxidants/secondary metabolites with their vast potential commercial application in food and pharmaceutical industries.
Collapse
Affiliation(s)
- Ahsan Hameed
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
| | - Syed Ammar Hussain
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
| | - Junhuan Yang
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
| | - Muhammad Umair Ijaz
- Key Laboratory of Meat Processing & Quality Control, College of Food Sciences, Nanjing Agriculture University, Nanjing 210095, China.
| | - Qing Liu
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
| | - Hafiz Ansar Rasul Suleria
- UQ School of Medicine, University of Queensland, Brisbane, QLD 4072, Australia.
- Department of Food, Nutrition, Dietetics & Health, Kansas State University, Manhattan, KS 66506, USA.
| | - Yuanda Song
- Colin Ratledge Center for Microbial Lipids, School of Agriculture Engineering and Food Science, Shandong University of Technology, Zibo 255049, China.
| |
Collapse
|
11
|
Gryganskyi AP, Mullens BA, Gajdeczka MT, Rehner SA, Vilgalys R, Hajek AE. Hijacked: Co-option of host behavior by entomophthoralean fungi. PLoS Pathog 2017; 13:e1006274. [PMID: 28472199 PMCID: PMC5417710 DOI: 10.1371/journal.ppat.1006274] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Andrii P. Gryganskyi
- Department of Biology, Duke University, Durham, North Carolina, United States of America
- * E-mail:
| | - Bradley A. Mullens
- Department of Entomology, University of California Riverside, Riverside, California, United States of America
| | - Michael T. Gajdeczka
- Department of Biology, Duke University, Durham, North Carolina, United States of America
| | - Stephen A. Rehner
- Systematic Mycology and Microbiology Laboratory, USDA-ARS, Beltsville, Maryland, United States of America
| | - Rytas Vilgalys
- Department of Biology, Duke University, Durham, North Carolina, United States of America
| | - Ann E. Hajek
- Department of Entomology, Cornell University, Ithaca, New York, United States of America
| |
Collapse
|
12
|
Boguś MI, Włóka E, Wrońska A, Kaczmarek A, Kazek M, Zalewska K, Ligęza-Żuber M, Gołębiowski M. Cuticle hydrolysis in four medically important fly species by enzymes of the entomopathogenic fungus Conidiobolus coronatus. MEDICAL AND VETERINARY ENTOMOLOGY 2017; 31:23-35. [PMID: 27770452 DOI: 10.1111/mve.12202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/20/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
Entomopathogenic fungi infect insects via penetration through the cuticle, which varies remarkably in chemical composition across species and life stages. Fungal infection involves the production of enzymes that hydrolyse cuticular proteins, chitin and lipids. Host specificity is associated with fungus-cuticle interactions related to substrate utilization and resistance to host-specific inhibitors. The soil fungus Conidiobolus coronatus (Constantin) (Entomophthorales: Ancylistaceae) shows virulence against susceptible species. The larvae and pupae of Calliphora vicina (Robineau-Desvoidy) (Diptera: Calliphoridae), Calliphora vomitoria (Linnaeus), Lucilia sericata (Meigen) (Diptera: Calliphoridae) and Musca domestica (Linnaeus) (Diptera: Muscidae) are resistant, but adults exposed to C. coronatus quickly perish. Fungus was cultivated for 3 weeks in a minimal medium. Cell-free filtrate, for which activity of elastase, N-acetylglucosaminidase, chitobiosidase and lipase was determined, was used for in vitro hydrolysis of the cuticle from larvae, puparia and adults. Amounts of amino acids, N-glucosamine and fatty acids released were measured after 8 h of incubation. The effectiveness of fungal enzymes was correlated with concentrations of compounds detected in the cuticles of tested insects. Positive correlations suggest compounds used by the fungus as nutrients, whereas negative correlations may indicate compounds responsible for insect resistance. Adult deaths result from the ingestion of conidia or fungal excretions.
Collapse
Affiliation(s)
- M I Boguś
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
- BIOMIBO, Warsaw, Poland
| | - E Włóka
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
| | - A Wrońska
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
- BIOMIBO, Warsaw, Poland
| | - A Kaczmarek
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
| | - M Kazek
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
| | | | - M Ligęza-Żuber
- Witold Stefański Institute of Parasitology, Department of Molecular Biology, Polish Academy of Sciences, Warsaw, Poland
| | - M Gołębiowski
- Faculty of Chemistry, Department of Environmental Analysis, University of Gdansk, Gdansk, Poland
| |
Collapse
|
13
|
Boguś MI, Wieloch W, Ligęza-Żuber M. Coronatin-2 from the entomopathogenic fungus Conidiobolus coronatus kills Galleria mellonella larvae and incapacitates hemocytes. BULLETIN OF ENTOMOLOGICAL RESEARCH 2017; 107:66-76. [PMID: 27444104 DOI: 10.1017/s0007485316000638] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Coronatin-2, a 14.5 kDa protein, was isolated from culture filtrates of the entomopathogenic fungus Conidiobolus coronatus (Costantin) Batko (Entomophthoramycota: Entomophthorales). After LC-MS/MS (liquid chromatography tandem mass spectrometry) analysis of the tryptic peptide digest of coronatin-2 and a mass spectra database search no orthologs of this protein could be found in fungi. The highest homology was observed to the partial translation elongation factor 1a from Sphaerosporium equinum (protein sequence coverage, 21%), with only one peptide sequence, suggesting that coronatin-2 is a novel fungal protein that has not yet been described. In contrast to coronatin-1, an insecticidal 36 kDa protein, which shows both elastolytic and chitinolytic activity, coronatin-2 showed no enzymatic activity. Addition of coronatin-2 into cultures of hemocytes taken from larvae of Galleria mellonella Linnaeus (Lepidoptera: Pyralidae), resulted in progressive disintegration of nets formed by granulocytes and plasmatocytes due to rapid degranulation of granulocytes, extensive vacuolization of plasmatocytes accompanied by cytoplasm expulsion, and cell disintegration. Spherulocytes remained intact, while oenocytes rapidly disintegrated. Coronatin-2 produced 80% mortality when injected into G. mellonella at 5 µg larva-1. Further study is warranted to determine the relevance of the acute toxicity of coronatin-2 and its effects on hemocytes in vitro to virulence of C. coronatus against its hosts.
Collapse
Affiliation(s)
- M I Boguś
- W. Stefański Institute of Parasitology,Polish Academy of Sciences,Twarda 51/55,00-818 Warszawa,Poland
| | - W Wieloch
- W. Stefański Institute of Parasitology,Polish Academy of Sciences,Twarda 51/55,00-818 Warszawa,Poland
| | - M Ligęza-Żuber
- W. Stefański Institute of Parasitology,Polish Academy of Sciences,Twarda 51/55,00-818 Warszawa,Poland
| |
Collapse
|
14
|
De Fine Licht HH, Jensen AB, Eilenberg J. Comparative transcriptomics reveal host-specific nucleotide variation in entomophthoralean fungi. Mol Ecol 2016; 26:2092-2110. [PMID: 27717247 DOI: 10.1111/mec.13863] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 09/13/2016] [Accepted: 09/15/2016] [Indexed: 12/15/2022]
Abstract
Obligate parasites are under strong selection to increase exploitation of their host to survive while evading detection by host immune defences. This has often led to elaborate pathogen adaptations and extreme host specificity. Specialization on one host, however, often incurs a trade-off influencing the capacity to infect alternate hosts. Here, we investigate host adaptation in two morphologically indistinguishable and closely related obligate specialist insect-pathogenic fungi from the phylum Entomophthoromycota, Entomophthora muscae sensu stricto and E. muscae sensu lato, pathogens of houseflies (Musca domestica) and cabbage flies (Delia radicum), respectively. We compared single nucleotide polymorphisms within and between these two E. muscae species using 12 RNA-seq transcriptomes from five biological samples. All five isolates contained intra-isolate polymorphisms that segregate in 50:50 ratios, indicative of genetic duplication events or functional diploidy. Comparative analysis of dN/dS ratios between the multinucleate E. muscae s.str. and E. muscae s.l. revealed molecular signatures of positive selection in transcripts related to utilization of host lipids and the potential secretion of toxins that interfere with the host immune response. Phylogenetic comparison with the nonobligate generalist insect-pathogenic fungus Conidiobolus coronatus revealed a gene-family expansion of trehalase enzymes in E. muscae. The main sugar in insect haemolymph is trehalose, and efficient sugar utilization was probably important for the evolutionary transition to obligate insect pathogenicity in E. muscae. These results support the hypothesis that genetically based host specialization in specialist pathogens evolves in response to the challenge of using resources and dealing with the immune system of different hosts.
Collapse
Affiliation(s)
- Henrik H De Fine Licht
- Section for Organismal Biology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Annette B Jensen
- Section for Organismal Biology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| | - Jørgen Eilenberg
- Section for Organismal Biology, Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg, Denmark
| |
Collapse
|
15
|
Utilizing Genomics to Study Entomopathogenicity in the Fungal Phylum Entomophthoromycota. ADVANCES IN GENETICS 2016; 94:41-65. [DOI: 10.1016/bs.adgen.2016.01.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
16
|
Małagocka J, Grell MN, Lange L, Eilenberg J, Jensen AB. Transcriptome of an entomophthoralean fungus (Pandora formicae) shows molecular machinery adjusted for successful host exploitation and transmission. J Invertebr Pathol 2015; 128:47-56. [DOI: 10.1016/j.jip.2015.05.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 04/09/2015] [Accepted: 05/04/2015] [Indexed: 10/23/2022]
|
17
|
Stress is the rule rather than the exception for Metarhizium. Curr Genet 2014; 61:253-61. [DOI: 10.1007/s00294-014-0447-9] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 08/07/2014] [Accepted: 08/17/2014] [Indexed: 01/20/2023]
|
18
|
Mantilla JG, Galeano NF, Gaitan AL, Cristancho MA, Keyhani NO, Góngora CE. Transcriptome analysis of the entomopathogenic fungus Beauveria bassiana grown on cuticular extracts of the coffee berry borer (Hypothenemus hampei). Microbiology (Reading) 2012; 158:1826-1842. [DOI: 10.1099/mic.0.051664-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
| | - Narmer F. Galeano
- Department of Plant Pathology, Cenicafe – Federacafe, Chinchina, Caldas, Colombia
| | - Alvaro L. Gaitan
- Department of Plant Pathology, Cenicafe – Federacafe, Chinchina, Caldas, Colombia
| | - Marco A. Cristancho
- Department of Plant Pathology, Cenicafe – Federacafe, Chinchina, Caldas, Colombia
| | - Nemat O. Keyhani
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA
| | - Carmenza E. Góngora
- Department of Entomology, Cenicafe – Federacafe, Chinchina, Caldas, Colombia
| |
Collapse
|
19
|
Wieloch W, Boguś MI, Ligęza M, Koszela-Piotrowska I, Szewczyk A. Coronatin-1 isolated from entomopathogenic fungus Conidiobolus coronatus kills Galleria mellonella hemocytes in vitro and forms potassium channels in planar lipid membrane. Toxicon 2011; 58:369-79. [PMID: 21798278 DOI: 10.1016/j.toxicon.2011.07.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 07/05/2011] [Accepted: 07/12/2011] [Indexed: 10/17/2022]
Abstract
Entomopathogenic fungi are important natural regulatory factors of insect populations and have potential as biological control agents of insect pests. The cosmopolitan soil fungus Conidiobolus coronatus (Entomopthorales) easily attacks Galleria mellonella (Lepidoptera) larvae. Prompt death of invaded insects is attributed to the action of toxic metabolites released by the invader. Effect of fungal metabolites on hemocytes, insect blood cells involved in innate defense response, remains underexplored to date. C. coronatus isolate 3491 inducing 100% mortality of G. mellonella last instar larvae exposed to sporulating colonies, was cultivated at 20 °C in minimal medium. Post-incubation filtrates were used as a source of fungal metabolites. A two-step HPLC (1 step: Shodex KW-803 column eluted with 50 mM KH(2)PO(4) supplemented with 0.1 M KCl, pH 6.5; 2 step: ProteinPak™ CM 8HR column equilibrated with 5 mM KH(2)PO(4), pH 6.5, proteins eluted with a linear gradient of 0.5 M KCl) allowed the isolation of coronatin-1, an insecticidal 36 kDa protein showing both elastolytic and chitinolytic activities. Addition of coronatin-1 into primary in vitro cultures of G. mellonella hemocytes resulted in rapid disintegration of spherulocytes freely floating in culture medium and shrinkage of plasmatocytes adhering to the bottom of culture well. Coronatin-1 stimulated pseudopodia atrophy and, in consequence, disintegration of nets formed by cultured hemocytes. After incorporation of coronatin-1 into planar lipid membrane (PLM) ion channels selective for K(+) ions in 50/450 mM KCl solutions were observed. Potassium current flows were recorded in nearly 70% of experiments with conductance from 300 pS up to 1 nS. All observed channels were active at both positive and negative membrane potentials. Under experimental conditions incorporated coronatin-1 exhibited a zero current potential (E(rev)) of 47.7 mV, which indicates K(+)-selectivity of this protein. The success of the purification of coronatin-1 will allow further characterization of the mode of action of this molecule, including ability of coronatin-1 to form potassium channels in immunocompetent hemocytes.
Collapse
Affiliation(s)
- Wioletta Wieloch
- Institute of Parasitology, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland
| | | | | | | | | |
Collapse
|
20
|
Grell MN, Jensen AB, Olsen PB, Eilenberg J, Lange L. Secretome of fungus-infected aphids documents high pathogen activity and weak host response. Fungal Genet Biol 2011; 48:343-52. [DOI: 10.1016/j.fgb.2010.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 11/14/2010] [Accepted: 12/08/2010] [Indexed: 11/26/2022]
|
21
|
Boguś MI, Czygier M, Gołębiowski M, Kędra E, Kucińska J, Mazgajska J, Samborski J, Wieloch W, Włóka E. Effects of insect cuticular fatty acids on in vitro growth and pathogenicity of the entomopathogenic fungus Conidiobolus coronatus. Exp Parasitol 2010; 125:400-8. [DOI: 10.1016/j.exppara.2010.04.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2010] [Revised: 03/25/2010] [Accepted: 04/06/2010] [Indexed: 11/30/2022]
|
22
|
Proteomics of plant pathogenic fungi. J Biomed Biotechnol 2010; 2010:932527. [PMID: 20589070 PMCID: PMC2878683 DOI: 10.1155/2010/932527] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 02/03/2010] [Accepted: 03/01/2010] [Indexed: 12/15/2022] Open
Abstract
Plant pathogenic fungi cause important yield losses in crops. In order to develop efficient and environmental friendly crop protection strategies, molecular studies of the fungal biological cycle, virulence factors, and interaction with its host are necessary. For that reason, several approaches have been performed using both classical genetic, cell biology, and biochemistry and the modern, holistic, and high-throughput, omic techniques. This work briefly overviews the tools available for studying Plant Pathogenic Fungi and is amply focused on MS-based Proteomics analysis, based on original papers published up to December 2009. At a methodological level, different steps in a proteomic workflow experiment are discussed. Separate sections are devoted to fungal descriptive (intracellular, subcellular, extracellular) and differential expression proteomics and interactomics. From the work published we can conclude that Proteomics, in combination with other techniques, constitutes a powerful tool for providing important information about pathogenicity and virulence factors, thus opening up new possibilities for crop disease diagnosis and crop protection.
Collapse
|
23
|
Idnurm A, Verma S, Corrochano LM. A glimpse into the basis of vision in the kingdom Mycota. Fungal Genet Biol 2010; 47:881-92. [PMID: 20451644 DOI: 10.1016/j.fgb.2010.04.009] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 04/20/2010] [Accepted: 04/27/2010] [Indexed: 12/21/2022]
Abstract
Virtually all organisms exposed to light are capable of sensing this environmental signal. In recent years the photoreceptors that mediate the ability of fungi to "see" have been identified in diverse species, and increasingly characterized. The small sizes of fungal genomes and ease in genetic and molecular biology manipulations make this kingdom ideal amongst the eukaryotes for understanding photosensing. The most widespread and conserved photosensory protein in the fungi is White collar 1 (WC-1), a flavin-binding photoreceptor that functions with WC-2 as a transcription factor complex. Other photosensory proteins in fungi include opsins, phytochromes and cryptochromes whose roles in fungal photobiology are not fully resolved and their distribution in the fungi requires further taxon sampling. Additional unknown photoreceptors await discovery. This review discusses the effects of light on fungi and the evolutionary processes that may have shaped the ability of species to sense and respond to this signal.
Collapse
Affiliation(s)
- Alexander Idnurm
- Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO 64110, USA.
| | | | | |
Collapse
|
24
|
de Paula DAJ, de Oliveira Filho JX, da Silva MC, Colodel EM, Broetto L, Pinto PM, Schrank A, Nakazato L, Dutra V. Molecular Characterization of Ovine Zygomycosis in Central Western Brazil. J Vet Diagn Invest 2010; 22:274-7. [DOI: 10.1177/104063871002200220] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Zygomycosis is an important granulomatous disease that affects humans and animals, particularly sheep in tropical regions. Rhinofacial and nasopharyngeal zygomycosis were described in sheep in association with Conidiobolus spp. The present study characterized 5 samples of Conidiobolus isolated from 3 herds with clinical disease in Mato Grosso State, Brazil. The clinical and pathological findings were similar to nasopharyngeal zygomycosis. Based on morphological features, isolates were classified as Conidiobolus spp., and molecular phylogenetic analyses based on 18S ribosomal DNA grouped all isolates in a Conidiobolus lamprauges cluster. The current report describes the molecular characterization of ovine nasopharyngeal zygomycosis associated with C. lamprauges.
Collapse
Affiliation(s)
- Daphine Ariadne Jesus de Paula
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - João Xavier de Oliveira Filho
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Maria Cristina da Silva
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Edson Moleta Colodel
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Leonardo Broetto
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Paulo Marcos Pinto
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Augusto Schrank
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Luciano Nakazato
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| | - Valéria Dutra
- Postgraduate Course in Veterinary Science, Department of Veterinary Science, Federal University of Mato Grosso, Brazil, and the Department of Molecular Biology and Biotechnology, Center for Biotechnology, Federal University of Rio Grande do Sul, Brazil
| |
Collapse
|
25
|
Comparative EST analysis of a Zoophthora radicans isolate derived from Pieris brassicae and an isogenic strain adapted to Plutella xylostella. Microbiology (Reading) 2009; 155:174-185. [DOI: 10.1099/mic.0.022103-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Zoophthora radicansis an entomopathogenic fungus with the potential to be used as an insect biological control agent. To better understand the mechanisms used byZ. radicansto infect different hosts, we generated expressed sequence tag (EST) datasets from aZ. radicansstrain originally isolated fromPieris brassicae, and an isogenic strain passaged throughPlutella xylostella. In total, 1839 ESTs were generated which clustered into 466 contigs and 433 singletons to provide a set of 899 unique sequences. Approximately 85 % of the ESTs were significantly similar (E≤e−03) to other fungal genes, of which 69.6 % encoded proteins with a reported function. Proteins involved in protein synthesis and metabolism were encoded by 38.3 % of the ESTs, while 26.3 % encoded proteins involved in cell-cycle regulation, DNA synthesis, protein fate, transport, cell defence, transcription and RNA synthesis, and 4.9 % encoded proteins associated with cellular transport, signal transduction, control of cellular organization and cell-wall degradation. Several proteinases, including aspartic proteinases, trypsins, trypsin-like serine proteases and metalloproteases, with the potential to degrade insect cuticle were expressed by the two isolates.
Collapse
|
26
|
Gołebiowski M, Maliński E, Boguś MI, Kumirska J, Stepnowski P. The cuticular fatty acids of Calliphora vicina, Dendrolimus pini and Galleria mellonella larvae and their role in resistance to fungal infection. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2008; 38:619-27. [PMID: 18510973 DOI: 10.1016/j.ibmb.2008.03.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Revised: 03/18/2008] [Accepted: 03/19/2008] [Indexed: 05/18/2023]
Abstract
Epicuticular lipids in many terrestrial arthropods consist of vast numbers of polar and non-polar aliphatic compounds, which are mainly responsible for the water balance in these animals but can also affect conidia germination of entomopathogenic fungi. In this work the qualitative and quantitative profiles of cuticular fatty acids from three insect species differing in their susceptibility to fungal infection were studied. In an innovative approach, laser light scattering detection was coupled with HPLC in order to identify the non-chromophoric chemicals usually present in cuticular extracts. The acids identified contained from 5 to 20 carbon atoms in the alkyl chain and included unsaturated entities such as C(16:1), C(18:1), C(18:2), C(18:3) and C(20:1). There was a marked dominance of acids containing 16-18 carbon atoms. The relative contents of fatty acids in the extracted waxes varied from trace amounts to 44%. Cuticular fatty acids profile of Calliphora vicina (species resistant to fungal infection) significantly differs from profiles of Dendrolimus pini and Galleria mellonella (both species highly susceptible to fungal infection). The major difference is the presence of C(14:0), C(16:1) and C(20:0) in the cuticle of C. vicina. These three fatty acids are absent in the cuticle of D. pini while G. mellonella cuticle contains their traces. The concentrations of four fatty acids dominating in the G. mellonella larval cuticle (C(16:0), C(18:0), C(18:1) and C(18:2)) were found to fluctuate during the final larval instar and correlate with fluctuations in the susceptibility of larvae to fungal infection. The possible role of cuticular fatty acids in preventing fungal infection is discussed.
Collapse
Affiliation(s)
- Marek Gołebiowski
- Faculty of Chemistry, University of Gdańsk, ul. Sobieskiego 18/19, Gdańsk, Poland
| | | | | | | | | |
Collapse
|
27
|
Manning RJ, Waters SD, Callaghan AA. Saprotrophy of Conidiobolus and Basidiobolus in leaf litter. ACTA ACUST UNITED AC 2007; 111:1437-49. [DOI: 10.1016/j.mycres.2007.08.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2006] [Revised: 04/26/2007] [Accepted: 08/26/2007] [Indexed: 11/25/2022]
|
28
|
Boguś MI, Kedra E, Bania J, Szczepanik M, Czygier M, Jabłoński P, Pasztaleniec A, Samborski J, Mazgajska J, Polanowski A. Different defense strategies of Dendrolimus pini, Galleria mellonella, and Calliphora vicina against fungal infection. JOURNAL OF INSECT PHYSIOLOGY 2007; 53:909-22. [PMID: 17512001 DOI: 10.1016/j.jinsphys.2007.02.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Revised: 02/26/2007] [Accepted: 02/27/2007] [Indexed: 05/15/2023]
Abstract
The resistance of Galleria mellonella, Dendrolimus pini, and Calliphora vicina larvae against infection by the enthomopathogen Conidiobolus coronatus was shown to vary among the studied species. Exposure of both G. mellonella and D. pini larvae to the fungus resulted in rapid insect death, while all the C. vicina larvae remained unharmed. Microscopic studies revealed diverse responses of the three species to the fungal pathogen: (1) the body cavities of D. pini larvae were completely overgrown by fungal hyphae, with no signs of hemocyte response, (2) infected G. mellonella larvae formed melanotic capsules surrounding the fungal pathogen, and (3) the conidia of C. coronatus did not germinate on the cuticle of C. vicina larvae. The in vitro study on the degradation of the insect cuticle by proteases secreted by C. coronatus revealed that the G. mellonella cuticle degraded at the highest rate. The antiproteolytic capacities of insect hemolymph against fungal proteases correlated well with the insects' susceptibility to fungal infection. The antiproteolytic capacities of insect hemolymph against fungal proteases correlated well with the insects' susceptibility to fungal infection. Of all the tested species, only plasmatocytes exhibited phagocytic potential. Exposure to the fungal pathogen resulted in elevated phagocytic activity, found to be the highest in the infected G. mellonella. The incubation of insect hemolymph with fungal conidia and hyphae revealed diverse reactions of hemocytes of the studied insect species. The encapsulation potential of D. pini hemocytes was low. Hemocytes of G. mellonella showed a high ability to attach and encapsulate fungal structures. Incubation of C. vicina hemolymph with C. coronatus did not result in any hemocytic response. Phenoloxidase (PO) activity was found to be highest in D. pini hemolymph, moderate in G. mellonella, and lowest in the hemolymph of C. vicina. Fungal infection resulted in a significant decrease of PO activity in G. mellonela larvae, while that in the larvae of D. pini remained unchanged. PO activity in C. vicina exposed to fungus slightly increased. The lysozyme-like activity increased in the plasma of all three insect species after contact with the fungal pathogen. Anti E. coli activity was detected neither in control nor in infected D. pini larvae. No detectable anti E. coli activity was found in the control larvae of G. mellonella; however, its exposure to C. coronatus resulted in an increase in the activity to detectable level. In the case of C. vicina exposure to the fungus, the anti E. coli activity was significantly higher than in control larvae. The defense mechanisms of D. pini (species of economic importance in Europe) are presented for the first time.
Collapse
Affiliation(s)
- M I Boguś
- W. Stefański Institute of Parasitology, Polish Academy of Sciences, 00-818 Warszawa, Poland.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Vizcaíno JA, Redondo J, Suárez MB, Cardoza RE, Hermosa R, González FJ, Rey M, Monte E. Generation, annotation, and analysis of ESTs from four different Trichoderma strains grown under conditions related to biocontrol. Appl Microbiol Biotechnol 2007; 75:853-62. [PMID: 17333173 DOI: 10.1007/s00253-007-0885-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2006] [Revised: 02/08/2007] [Accepted: 02/08/2007] [Indexed: 11/29/2022]
Abstract
The functional genomics project "TrichoEST" was developed focused on different taxonomic groups of Trichoderma with biocontrol potential. Four cDNA libraries were constructed, using similar growth conditions, from four different Trichoderma strains: Trichoderma longibrachiatum T52, Trichoderma asperellum T53, Trichoderma virens T59, and Trichoderma sp. T78. In this study, we present the analysis of the 8,160 expressed sequence tags (ESTs) generated. Each EST library was independently assembled and 1,000-1,300 unique sequences were identified in each strain. First, we queried our collection of ESTs against the NCBI nonredundant database using the BLASTX algorithm. Moreover, using the Gene Ontology hierarchy, we performed the annotation of 40.9% of the unique sequences. Later, based on the EST abundance, we examined the highly expressed genes in the four strains. A hydrophobin was found as the gene expressed at the highest level in two of the strains, but we also found that other unique sequences similar to the HEX1, QID3, and NMT1 proteins were highly represented in at least two of the Trichoderma strains.
Collapse
Affiliation(s)
- Juan Antonio Vizcaíno
- Centro de Investigaciones Científicas Isla de la Cartuja, Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC/University of Seville, 41092 Sevilla, Spain.
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Abstract
Tropical mycoses vary from the commonplace to the rare and exotic but they are seen regularly even as imported conditions and it is important to consider the diagnosis, where possible, in individuals who have visited remote areas. Patients may present many years after they have left an endemic area with subcutaneous or endemic systemic mycoses. In establishing a diagnosis, it is always important to take an accurate travel history so that the movements of the individual can be correlated with the potential risk for exposure to infection.
Collapse
Affiliation(s)
- Roderick J Hay
- Faculty of Medicine and Health Sciences, Queens University Belfast, Northern Ireland, UK.
| |
Collapse
|
31
|
Cho EM, Boucias D, Keyhani NO. EST analysis of cDNA libraries from the entomopathogenic fungus Beauveria (Cordyceps) bassiana. II. Fungal cells sporulating on chitin and producing oosporein. MICROBIOLOGY-SGM 2006; 152:2855-2864. [PMID: 16946279 DOI: 10.1099/mic.0.28845-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the accompanying paper [Cho, E.-M., Liu, L., Farmerie, W. & Keyhani, N. O. (2006). Microbiology 152, 2843-2854], the analysis of expressed sequence tag (EST) libraries derived from homogeneous single-cell populations of aerial conidia, in vitro blastospores and submerged conidia of the entomopathogenic fungus Beauveria (Cordyceps) bassiana has been reported. Here an extended EST analysis is presented of complex cell mixtures derived from fungal cells sporulating on chitin or grown under culture conditions inducing the production of the B. bassiana secondary metabolite, oosporein. Fungal material used for the construction of the libraries included germinating conidia and blastospores, mycelia, as well as cells in various developmental stages. Approximately 2,500 5' end sequences were determined from random sequencing of clones from each library, and were clustered into 277 contigs with 1,069 singlets, and 306 contigs with 1,064 singlets, for the chitin and oosporein libraries, respectively. Almost half (45-50 %) of the sequences in each library displayed either no significant similarity (e value >10(-4)) or similarity to hypothetical proteins found in the NCBI database. Approximately 20-25 % of the sequences in each library could be annotated by gene ontology terms. A comparative analysis between the two libraries, as well as the libraries in the accompanying paper, is presented. A set of 4,360 clustered and unique sequences was characterized. The data are indicative of a highly plastic gene expression repertoire being available to B. bassiana for growth during different environmental and developmental conditions, and provides a dataset for gene discovery and genome annotation.
Collapse
Affiliation(s)
- Eun-Min Cho
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA
| | - Drion Boucias
- Department of Entomology and Nematology, University of Florida, Gainesville, FL 32611, USA
| | - Nemat O Keyhani
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA
| |
Collapse
|
32
|
Vizcaíno JA, González FJ, Suárez MB, Redondo J, Heinrich J, Delgado-Jarana J, Hermosa R, Gutiérrez S, Monte E, Llobell A, Rey M. Generation, annotation and analysis of ESTs from Trichoderma harzianum CECT 2413. BMC Genomics 2006; 7:193. [PMID: 16872539 PMCID: PMC1562415 DOI: 10.1186/1471-2164-7-193] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2006] [Accepted: 07/27/2006] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The filamentous fungus Trichoderma harzianum is used as biological control agent of several plant-pathogenic fungi. In order to study the genome of this fungus, a functional genomics project called "TrichoEST" was developed to give insights into genes involved in biological control activities using an approach based on the generation of expressed sequence tags (ESTs). RESULTS Eight different cDNA libraries from T. harzianum strain CECT 2413 were constructed. Different growth conditions involving mainly different nutrient conditions and/or stresses were used. We here present the analysis of the 8,710 ESTs generated. A total of 3,478 unique sequences were identified of which 81.4% had sequence similarity with GenBank entries, using the BLASTX algorithm. Using the Gene Ontology hierarchy, we performed the annotation of 51.1% of the unique sequences and compared its distribution among the gene libraries. Additionally, the InterProScan algorithm was used in order to further characterize the sequences. The identification of the putatively secreted proteins was also carried out. Later, based on the EST abundance, we examined the highly expressed genes and a hydrophobin was identified as the gene expressed at the highest level. We compared our collection of ESTs with the previous collections obtained from Trichoderma species and we also compared our sequence set with different complete eukaryotic genomes from several animals, plants and fungi. Accordingly, the presence of similar sequences in different kingdoms was also studied. CONCLUSION This EST collection and its annotation provide a significant resource for basic and applied research on T. harzianum, a fungus with a high biotechnological interest.
Collapse
Affiliation(s)
- Juan Antonio Vizcaíno
- IBVF-CIC Isla de la Cartuja, CSIC/Universidad de Sevilla. Avda. Américo Vespucio s/n. 41092, Sevilla, Spain
| | - Francisco Javier González
- Newbiotechnic, S. A. (NBT). Parque Industrial de Bollullos A-49 (PIBO). 41110, Bollullos de la Mitación. Sevilla, Spain
| | - M Belén Suárez
- IBVF-CIC Isla de la Cartuja, CSIC/Universidad de Sevilla. Avda. Américo Vespucio s/n. 41092, Sevilla, Spain
- Spanish-Portuguese Center of Agricultural Research (CIALE), Departamento de Microbiología y Genética, Universidad de Salamanca, Edificio Departamental, lab 208, Plaza Doctores de la Reina s/n, 37007, Salamanca, Spain
| | - José Redondo
- Newbiotechnic, S. A. (NBT). Parque Industrial de Bollullos A-49 (PIBO). 41110, Bollullos de la Mitación. Sevilla, Spain
| | - Julian Heinrich
- Newbiotechnic, S. A. (NBT). Parque Industrial de Bollullos A-49 (PIBO). 41110, Bollullos de la Mitación. Sevilla, Spain
| | - Jesús Delgado-Jarana
- IBVF-CIC Isla de la Cartuja, CSIC/Universidad de Sevilla. Avda. Américo Vespucio s/n. 41092, Sevilla, Spain
| | - Rosa Hermosa
- Spanish-Portuguese Center of Agricultural Research (CIALE), Departamento de Microbiología y Genética, Universidad de Salamanca, Edificio Departamental, lab 208, Plaza Doctores de la Reina s/n, 37007, Salamanca, Spain
| | - Santiago Gutiérrez
- Area of Microbiology. Escuela Superior y Técnica de Ingeniería Agraria. Universidad de León, Campus de Ponferrada. Avda. Astorga s/n. 24400, Ponferrada, Spain
| | - Enrique Monte
- Newbiotechnic, S. A. (NBT). Parque Industrial de Bollullos A-49 (PIBO). 41110, Bollullos de la Mitación. Sevilla, Spain
| | - Antonio Llobell
- IBVF-CIC Isla de la Cartuja, CSIC/Universidad de Sevilla. Avda. Américo Vespucio s/n. 41092, Sevilla, Spain
| | - Manuel Rey
- Newbiotechnic, S. A. (NBT). Parque Industrial de Bollullos A-49 (PIBO). 41110, Bollullos de la Mitación. Sevilla, Spain
| |
Collapse
|
33
|
Wang C, Hu G, St Leger RJ. Differential gene expression by Metarhizium anisopliae growing in root exudate and host (Manduca sexta) cuticle or hemolymph reveals mechanisms of physiological adaptation. Fungal Genet Biol 2005; 42:704-18. [PMID: 15914043 DOI: 10.1016/j.fgb.2005.04.006] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2004] [Revised: 03/09/2005] [Accepted: 04/03/2005] [Indexed: 11/17/2022]
Abstract
Like many other fungal pathogens Metarhizium anisopliae is a facultative saprophyte with both soil-dwelling and insect pathogenic life-stages. In addition, as M. anisopliae traverses the cuticle and enters the hemolymph it must adapt to several different host environments. In this study, we used expressed sequence tags and cDNA microarray analyses to demonstrate that physiological adaptation by M. anisopliae to insect cuticle, insect hemolymph, bean root exudate (a model for life in the soil), and nutrient rich Sabouraud dextrose broth (SDB) involves different subsets of genes. Overall, expression patterns in cuticle and hemolymph clustered separately from expression patterns in root exudates and SDB, indicative of critical differences in transcriptional control during pathogenic and saprophytic growth. However, there were differences in gene expression between hemolymph and cuticle and these mostly involved perception mechanisms, carbon metabolism, proteolysis, cell surface properties, and synthesis of toxic metabolites. These differences suggest previously unsuspected stratagems of fungal pathogenicity that can be tested experimentally. Examples include the switch-off of cuticle-degrading proteases and a dramatic cell wall reorganization during growth in hemolymph.
Collapse
Affiliation(s)
- Chengshu Wang
- Department of Entomology, University of Maryland, 4112 Plant Sciences Building, College Park, MD 20742, USA
| | | | | |
Collapse
|
34
|
Hu G, Leger RJS. A phylogenomic approach to reconstructing the diversification of serine proteases in fungi. J Evol Biol 2005; 17:1204-14. [PMID: 15525405 DOI: 10.1111/j.1420-9101.2004.00786.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Using a phylogenomic approach with 10 fungi of very different virulence and habitat, we determined that there was substantial diversification of subtilase-type proteases early in ascomycete history (with subsequent loss in many lineages) but with no comparable diversification of trypsins. Patterns of intron loss and the degree of divergence between paralogues demonstrated that the proliferation of proteinase K subtilases and subtilisin type subtilases seen in pathogenic ascomycetes (Metarhizium anisopliae, Magnaporthe grisea, Fusarium graminearum) occurred after the basidiomycete/ascomycete split but predated radiation of ascomycete lineages. This suggests that the early ascomycetes had a lifestyle that selected for multiple proteases, whereas the current disparity in gene numbers between ascomycete lineages results from retention of genes in at least some pathogens that have been lost in other lineages (yeasts, Aspergillus nidulans, Neurospora crassa). A similar prevailing trend towards lineage specific gene loss of trypsins in saprophytes and some pathogens suggests that their phylogenetic breadth will have been much wider in early fungi than currently.
Collapse
Affiliation(s)
- G Hu
- Department of Entomology, University of Maryland, College Park, MD 20742-4454, USA.
| | | |
Collapse
|