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CRISPR-Cas9-mediated enhancement of Beauveria bassiana virulence with overproduction of oosporein. CRISPR-Cas9 通过过量生产卵孢子蛋白介导的 Beauveria bassiana 毒力增强。
Fungal Biology and Biotechnology Pub Date : 2024-11-21 DOI: 10.1186/s40694-024-00190-5
Gabriel Moura Mascarin, Somraj Shrestha, Marcio Vinícius de Carvalho Barros Cortes, Jose Luis Ramirez, Christopher A Dunlap, Jeffrey J Coleman
{"title":"CRISPR-Cas9-mediated enhancement of Beauveria bassiana virulence with overproduction of oosporein.","authors":"Gabriel Moura Mascarin, Somraj Shrestha, Marcio Vinícius de Carvalho Barros Cortes, Jose Luis Ramirez, Christopher A Dunlap, Jeffrey J Coleman","doi":"10.1186/s40694-024-00190-5","DOIUrl":"10.1186/s40694-024-00190-5","url":null,"abstract":"<p><p>Biocontrol agents play a pivotal role in managing pests and contribute to sustainable agriculture. Recent advancements in genetic engineering can facilitate the development of entomopathogenic fungi with desired traits to enhance biocontrol efficacy. In this study, a CRISPR-Cas9 ribonucleoprotein system was utilized to genetically improve the virulence of Beauveria bassiana, a broad-spectrum insect pathogen used in biocontrol of arthropod pests worldwide. CRISPR-Cas9-based disruption of the transcription factor-encoding gene Bbsmr1 led to derepression of the oosporein biosynthetic gene cluster resulting in overproduction of the red-pigmented dibenzoquinone oosporein involved in host immune evasion, thus increasing fungal virulence. Mutants defective for Bbsmr1 displayed a remarkable enhanced insecticidal activity by reducing lethal times and concentrations, while concomitantly presenting negligible or minor pleiotropic effects. In addition, these mutants displayed faster germination on the insect cuticle which correlated with higher density of free-floating blastospores in the hemolymph and accelerated mortality of the host. These findings emphasize the utility of genetic engineering in developing enhanced fungal biocontrol agents with customized phenotypic traits, and provide an efficient and versatile genetic transformation tool for application in other beneficial entomopathogenic fungi.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"21"},"PeriodicalIF":0.0,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142689649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantification of fungal biomass in mycelium composites made from diverse biogenic side streams. 用不同生物侧流制成的菌丝复合材料中真菌生物量的定量。
Fungal Biology and Biotechnology Pub Date : 2024-11-18 DOI: 10.1186/s40694-024-00189-y
Marcello Nussbaumer, Tanja Karl, J Philipp Benz
{"title":"Quantification of fungal biomass in mycelium composites made from diverse biogenic side streams.","authors":"Marcello Nussbaumer, Tanja Karl, J Philipp Benz","doi":"10.1186/s40694-024-00189-y","DOIUrl":"10.1186/s40694-024-00189-y","url":null,"abstract":"<p><p>Mycelium composite materials are comprised of renewable organic substrates interconnected by fungal mycelium, allowing full biodegradability after use. Due to their promising material properties, adaptability, and sustainable nature, these biomaterials are investigated intensively. However, one crucial aspect that has hardly been covered so far is the proportion of fungal biomass in the composites, which would be necessary to assess its contribution to the material characteristics. Since a complete physical separation of mycelium and substrate is not feasible, we approached this issue by isolating the fungal DNA and relating it to the mass of mycelium with the help of quantitative PCR. Overall, 20 different combinations of fungi and biogenic side streams were evaluated for their handling stability, and growth observations were related to the quantification results. Ganoderma sessile was able to form stable composites with almost all substrates, and a positive correlation between mycelial biomass and composite stability could be found. However, the amount of mycelium required for fabricating firm materials strongly depends on the combination of substrate and fungal species used. Less than five mass percent of fungal biomass can suffice to achieve this, as for example when combining Trametes versicolor with sugar beet pulp, whereas a mass fraction of twenty percent leads to crumbly materials when using Pleurotus pulmonarius on green waste. These results indicate that the mycelial biomass is an important factor for the composite's stability but that the properties of the fungal hyphae, as well as those of the substrate, are also relevant. The presented quantification method not only allows to estimate fungal growth during composite production but can also improve our understanding of how the mycelium influences the material.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"20"},"PeriodicalIF":0.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11575168/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142669588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Filamentous fungi as emerging cell factories for the production of aromatic compounds. 丝状真菌是生产芳香化合物的新兴细胞工厂。
Fungal Biology and Biotechnology Pub Date : 2024-11-14 DOI: 10.1186/s40694-024-00188-z
Pavithra Umashankar, Yvonne Nygård
{"title":"Filamentous fungi as emerging cell factories for the production of aromatic compounds.","authors":"Pavithra Umashankar, Yvonne Nygård","doi":"10.1186/s40694-024-00188-z","DOIUrl":"10.1186/s40694-024-00188-z","url":null,"abstract":"<p><p>Microbial production of aromatic compounds from renewable feedstocks has gained increasing interest as a means towards sustainable production of chemicals. The potential of filamentous fungi for production of aromatic compounds has nonetheless not yet been widely exploited. Notably, many filamentous fungi can naturally break down lignin and metabolize lignin-derived aromatic compounds. A few examples where a fungal cell factory, often of Aspergillus spp., is used to produce an aromatic compound, typically through the conversion of one compound to another, have already been reported. In this review, we summarize fungal biosynthesis of biotechnologically interesting aromatic compounds. The focus is on compounds produced from the shikimate pathway. Biorefinery-relevant efforts for valorizing residual biomass or lignin derived compounds are also discussed. The advancement in engineering tools combined with the increasing amounts of data supporting the discovery of new enzymes and development of new bioprocesses has led to an increased range of potential production hosts and products. This is expected to translate into a wider utilization of fungal cell factories for production of aromatic compounds.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"19"},"PeriodicalIF":0.0,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11566741/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142632414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement of antioxidant activity and total phenolic content of Fomitopsis pinicola mycelium extract. 提高拟尾柱虫菌丝体提取物的抗氧化活性和总酚含量
Fungal Biology and Biotechnology Pub Date : 2024-11-07 DOI: 10.1186/s40694-024-00187-0
Tetiana Krupodorova, Victor Barshteyn, Veronika Dzhagan, Andrii Pluzhnyk, Tetiana Zaichenko, Yaroslav Blume
{"title":"Enhancement of antioxidant activity and total phenolic content of Fomitopsis pinicola mycelium extract.","authors":"Tetiana Krupodorova, Victor Barshteyn, Veronika Dzhagan, Andrii Pluzhnyk, Tetiana Zaichenko, Yaroslav Blume","doi":"10.1186/s40694-024-00187-0","DOIUrl":"10.1186/s40694-024-00187-0","url":null,"abstract":"<p><strong>Background: </strong>Fomitopsis pinicola is one of the most common fungi found in temperate zone of Europe, widely distributed spread in Asia and North America. Fungus has a wide range of therapeutic activity: antitumor, antimicrobial, anti-inflammatory, antidiabetic, antifungal, hepatoprotective, hemostatic action. A number of studies have confirmed the significant antioxidant activity of F. pinicola fruiting bodies. However, the controlled cultivation conditions that influence fungal growth and metabolite production of F. pinicola, particularly the mycelial growth and biosynthesis of metabolites in its culture broth, as well as the antioxidant activity of its mycelium, remain poorly understood.</p><p><strong>Results: </strong>This study investigated the impact of cultivation conditions on F. pinicola mycelium growth, phenols synthesis and antioxidant activity. Difference in the biosynthetic activity of F. pinicola under tested cultivation conditions was established. A highest value of 2,2-diphenyl-1-picryl-hydrazyl (DPPH•) inhibition (78.2 ± 0.9%) was found for a mycelium cultivated at 30 ºC, while cultivation at a lower temperature (20 ºC) was suitable for biomass growth (8.5 ± 0.3 g/L) and total phenolic content (TPC) 11.0 ± 0.6 mg GAE/g. Carbon and nitrogen sources in a cultivation broth significantly influenced the studied characteristics. Xylose supported the highest DPPH• inhibition (89.91 ± 0.5%) and TPC (16.55 ± 0.4 mg GAE/g), while galactose yielded the best biomass (4.0 ± 0.3 g/L). Peptone was the most effective nitrogen source for obtaining the mycelium with high potential of DPPH• radical inactivation (90.42 ± 0.5%) and TPC (17.41 ± 0.5 mg GAE/g), while the maximum biomass yield (7.8 ± 0.6 g/L) was found with yeast extract in cultivation medium. F. pinicola demonstrated the ability to grow and produce bioactive metabolites across a wide pH range from 2.5 to 7.5. Shaking cultivation resulted in the highest TPC (21.44 ± 0.10 mg GAE/g), though the same level of antioxidant activity (93%) was achieved under both shaking and static cultivation on the 7th and 28th days, respectively.</p><p><strong>Conclusion: </strong>Controlling cultivation parameters makes it possible to regulate the metabolic and biochemical processes of F. pinicola, facilitating the balance needed to obtain optimal biomass, phenols and antioxidant activity. The findings show the potential to increase phenol production by 2.25 and 2.23 times under shaking and static conditions, respectively, while maintaining a high level of activity.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"18"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11545585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a whole-cell SELEX process to select species-specific aptamers against Aspergillus niger. 开发全细胞 SELEX 流程,选择针对黑曲霉的物种特异性适配体。
Fungal Biology and Biotechnology Pub Date : 2024-11-05 DOI: 10.1186/s40694-024-00185-2
Valeria Ellena, Alexandra Ioannou, Claudia Kolm, Andreas H Farnleiter, Matthias G Steiger
{"title":"Development of a whole-cell SELEX process to select species-specific aptamers against Aspergillus niger.","authors":"Valeria Ellena, Alexandra Ioannou, Claudia Kolm, Andreas H Farnleiter, Matthias G Steiger","doi":"10.1186/s40694-024-00185-2","DOIUrl":"10.1186/s40694-024-00185-2","url":null,"abstract":"<p><strong>Background: </strong>Spores produced by the filamentous fungus Aspergillus niger are abundant in a variety of environments. The proliferation of this fungus in indoor environments has been associated to health risks and its conidia can cause allergic reaction and severe invasive disease in animals and humans. Therefore, the detection and monitoring of Aspergillus conidia is of utmost importance to prevent serious fungal infections and contaminations. Among others, aptamers could serve as biosensors for the specific detection of fungal spores.</p><p><strong>Results: </strong>In this study, DNA aptamers specific to conidia of A. niger were developed by optimizing a whole-cell SELEX approach. Three whole-cells SELEX experiments were performed in parallel with similar conditions. Quantification of recovered ssDNA and melting curve analyses were applied to monitor the ongoing SELEX process. Next-generation sequencing was performed on selected recovered ssDNA pools, allowing the identification of DNA aptamers which bind with high affinity to the target cells. The developed aptamers were shown to be species-specific, being able to bind to A. niger but not to A. tubingensis or to A. nidulans. The binding affinity of two aptamers (AN01-R9-006 and AN02-R9-185) was measured to be 58.97 nM and 138.71 nM, respectively, which is in the range of previously developed aptamers.</p><p><strong>Conclusions: </strong>This study demonstrates that species-specific aptamers can be successfully developed via whole-cell SELEX to distinguish different Aspergillus species and opens up new opportunities in the field of diagnostics of fungal infections.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"17"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11536964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142585034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ashbya gossypii as a versatile platform to produce sabinene from agro-industrial wastes. 白蜡树是利用农用工业废料生产沙比利烯的多功能平台。
Fungal Biology and Biotechnology Pub Date : 2024-10-29 DOI: 10.1186/s40694-024-00186-1
Gloria Muñoz-Fernández, Javier-Fernando Montero-Bullón, José Luis Martínez, Rubén M Buey, Alberto Jiménez
{"title":"Ashbya gossypii as a versatile platform to produce sabinene from agro-industrial wastes.","authors":"Gloria Muñoz-Fernández, Javier-Fernando Montero-Bullón, José Luis Martínez, Rubén M Buey, Alberto Jiménez","doi":"10.1186/s40694-024-00186-1","DOIUrl":"10.1186/s40694-024-00186-1","url":null,"abstract":"<p><strong>Background: </strong>Ashbya gossypii is a filamentous fungus widely utilized for industrial riboflavin production and has a great potential as a microbial chassis for synthesizing other valuable metabolites such as folates, biolipids, and limonene. Engineered strains of A. gossypii can effectively use various waste streams, including xylose-rich feedstocks. Notably, A. gossypii has been identified as a proficient biocatalyst for producing limonene from xylose-rich sources. This study aims to investigate the capability of engineered A. gossypii strains to produce various plant monoterpenes using agro-industrial waste as carbon sources.</p><p><strong>Results: </strong>We overexpressed heterologous terpene synthases to produce acyclic, monocyclic, and bicyclic monoterpenes in two genetic backgrounds of A. gossypii. These backgrounds included an NPP synthase orthogonal pathway and a mutant erg20<sup>F95W</sup> allele with reduced FPP synthase activity. Our findings demonstrate that A. gossypii can synthesize linalool, limonene, pinene, and sabinene, with terpene synthases showing differential substrate selectivity for NPP or GPP precursors. Additionally, co-overexpression of endogenous HMG1 and ERG12 with heterologous NPP synthase and terpene synthases significantly increased sabinene yields from xylose-containing media. Using mixed formulations of corn-cob lignocellulosic hydrolysates and either sugarcane or beet molasses, we achieved limonene and sabinene productions of 383 mg/L and 684.5 mg/L, respectively, the latter representing a significant improvement compared to other organisms in flask culture mode.</p><p><strong>Conclusions: </strong>Engineered A. gossypii strains serve as a suitable platform for assessing plant terpene synthase functionality and substrate selectivity in vivo, which are crucial to understand monoterpene bioproduction. The NPP synthase pathway markedly enhances limonene and sabinene production in A. gossypii, achieving levels comparable to those of other industrial microbial producers. Furthermore, these engineered strains offer a novel approach for producing monoterpenes through the valorization of agro-industrial wastes.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"16"},"PeriodicalIF":0.0,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11520522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142548883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Competition between homologous chromosomal DNA and exogenous donor DNA to repair CRISPR/Cas9-induced double-strand breaks in Aspergillus  niger. 同源染色体 DNA 与外源供体 DNA 竞争修复黑曲霉中 CRISPR/Cas9 诱导的双链断裂。
Fungal Biology and Biotechnology Pub Date : 2024-10-15 DOI: 10.1186/s40694-024-00184-3
Selina Forrer, Mark Arentshorst, Prajeesh Koolth Valappil, Jaap Visser, Arthur F J Ram
{"title":"Competition between homologous chromosomal DNA and exogenous donor DNA to repair CRISPR/Cas9-induced double-strand breaks in Aspergillus  niger.","authors":"Selina Forrer, Mark Arentshorst, Prajeesh Koolth Valappil, Jaap Visser, Arthur F J Ram","doi":"10.1186/s40694-024-00184-3","DOIUrl":"https://doi.org/10.1186/s40694-024-00184-3","url":null,"abstract":"<p><strong>Background: </strong>Aspergillus niger is well-known for its high protein secretion capacity and therefore an important cell factory for homologous and heterologous protein production. The use of a strong promoter and multiple gene copies are commonly used strategies to increase the gene expression and protein production of the gene of interest (GOI). We recently presented a two-step CRISPR/Cas9-mediated approach in which glucoamylase (glaA) landing sites (GLSs) are introduced at predetermined sites in the genome (step 1), which are subsequently filled with copies of the GOI (step 2) to achieve high expression of the GOI.</p><p><strong>Results: </strong>Here we show that in a ku70 defective A. niger strain (Δku70), thereby excluding non-homologous end joining (NHEJ) as a mechanism to repair double-stranded DNA breaks (DSBs), the chromosomal glaA locus or homologous GLSs can be used to repair Cas9-induced DSBs, thereby competing with the integration of the donor DNA containing the GOI. In the absence of exogenously added donor DNA, the DSBs are repaired with homologous chromosomal DNA located on other chromosomes (inter-chromosomal repair) or, with higher efficiency, by a homologous DNA fragment located on the same chromosome (intra-chromosomal repair). Single copy inter-chromosomal homology-based DNA repair was found to occur in 13-20% of the transformants while 80-87% of the transformants were repaired by exogenously added donor DNA. The efficiency of chromosomal repair was dependent on the copy number of the potential donor DNA sequences in the genome. The presence of five homologous DNA sequences, resulted in an increased number (35-61%) of the transformants repaired by chromosomal DNA. The efficiency of intra-chromosomal homology based DSB repair in the absence of donor DNA was found to be highly preferred (85-90%) over inter-chromosomal repair. Intra-chromosomal repair was also found to be the preferred way of DNA repair in the presence of donor DNA and was found to be locus-dependent.</p><p><strong>Conclusion: </strong>The awareness that homologous chromosomal DNA repair can compete with donor DNA to repair DSB and thereby affecting the efficiency of multicopy strain construction using CRISPR/Cas9-mediated genome editing is an important consideration to take into account in industrial strain design.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"15"},"PeriodicalIF":0.0,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11481784/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142480504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The decision for or against mycoparasitic attack by Trichoderma spp. is taken already at a distance in a prey-specific manner and benefits plant-beneficial interactions. 毛霉属真菌寄生攻击与否的决定是在一定距离外以猎物特异性的方式做出的,有利于植物之间的有益互动。
Fungal Biology and Biotechnology Pub Date : 2024-09-09 DOI: 10.1186/s40694-024-00183-4
Pia Stange, Johannes Kersting, Prasath Balaji Sivaprakasam Padmanaban, Jörg-Peter Schnitzler, Maaria Rosenkranz, Tanja Karl, J Philipp Benz
{"title":"The decision for or against mycoparasitic attack by Trichoderma spp. is taken already at a distance in a prey-specific manner and benefits plant-beneficial interactions.","authors":"Pia Stange, Johannes Kersting, Prasath Balaji Sivaprakasam Padmanaban, Jörg-Peter Schnitzler, Maaria Rosenkranz, Tanja Karl, J Philipp Benz","doi":"10.1186/s40694-024-00183-4","DOIUrl":"https://doi.org/10.1186/s40694-024-00183-4","url":null,"abstract":"<p><strong>Background: </strong>The application of plant-beneficial microorganisms as bio-fertilizer and biocontrol agents has gained traction in recent years, as both agriculture and forestry are facing the challenges of poor soils and climate change. Trichoderma spp. are gaining popularity in agriculture and forestry due to their multifaceted roles in promoting plant growth through e.g. nutrient translocation, hormone production, induction of plant systemic resistance, but also direct antagonism of other fungi. However, the mycotrophic nature of the genus bears the risk of possible interference with other native plant-beneficial fungi, such as ectomycorrhiza, in the rhizosphere. Such interference could yield unpredictable consequences for the host plants of these ecosystems. So far, it remains unclear, whether Trichoderma is able to differentiate between plant-beneficial and plant-pathogenic fungi during the process of plant colonization.</p><p><strong>Results: </strong>We investigated whether Trichoderma spp. can differentiate between beneficial ectomycorrhizal fungi (represented by Laccaria bicolor and Hebeloma cylindrosporum) and pathogenic fungi (represented by Fusarium graminearum and Alternaria alternata) in different confrontation scenarios, including a newly developed olfactometer \"race tube\"-like system. Using two independent species, T. harzianum and T. atrobrunneum, with plant-growth-promoting and immune-stimulating properties towards Populus x canescens, our study revealed robustly accelerated growth towards phytopathogens, while showing a contrary response to ectomycorrhizal fungi. Transcriptomic analyses identified distinct genetic programs during interaction corresponding to the lifestyles, emphasizing the expression of mycoparasitism-related genes only in the presence of phytopathogens.</p><p><strong>Conclusion: </strong>The findings reveal a critical mode of fungal community interactions belowground and suggest that Trichoderma spp. can distinguish between fungal partners of different lifestyles already at a distance. This sheds light on the entangled interactions of fungi in the rhizosphere and emphasizes the potential benefits of using Trichoderma spp. as a biocontrol agent and bio-fertilizer in tree plantations.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"14"},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11384713/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142300569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Streptomyces small laccase expressed in Aspergillus Niger as a new addition for the lignocellulose bioconversion toolbox. 在尼日尔黑曲霉中表达的链霉菌小漆酶是木质纤维素生物转化工具箱中的新成员。
Fungal Biology and Biotechnology Pub Date : 2024-09-02 DOI: 10.1186/s40694-024-00181-6
Andika Sidar, Gerben P Voshol, Ahmed El-Masoudi, Erik Vijgenboom, Peter J Punt
{"title":"Streptomyces small laccase expressed in Aspergillus Niger as a new addition for the lignocellulose bioconversion toolbox.","authors":"Andika Sidar, Gerben P Voshol, Ahmed El-Masoudi, Erik Vijgenboom, Peter J Punt","doi":"10.1186/s40694-024-00181-6","DOIUrl":"10.1186/s40694-024-00181-6","url":null,"abstract":"<p><p>Laccases are multi-copper oxidases that are usually composed of three Cu-oxidase domains. Domains one and three house the copper binding sites, and the second domain is involved in forming a substrate-binding cleft. However, Streptomyces species are found to have small laccases (SLAC) that lack one of the three Cu-oxidase domains. This type of SLAC with interesting lignocellulose bioconversion activities has not been reported in Aspergillus niger. In our research, we explored the expression and engineering of the SLAC from Streptomyces leeuwenhoekii C34 in A. niger. Genes encoding two versions of the SLAC were expressed. One encoding the SLAC in its native form and a second encoding the SLAC fused to two N-terminal CBM1 domains. The latter is a configuration also known for specific yeast laccases. Both SLAC variants were functionally expressed in A. niger as shown by in vitro activity assays and proteome analysis. Laccase activity was also analyzed toward bioconversion of lignocellulosic rice straw. From this analysis it was clear that the SLAC activity improved the efficiency of saccharification of lignocellulosic biomass by cellulase enzyme cocktails.</p>","PeriodicalId":52292,"journal":{"name":"Fungal Biology and Biotechnology","volume":"11 1","pages":"13"},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11368006/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142121146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Border crossings and connections. 过境和连接。
Fungal Biology and Biotechnology Pub Date : 2024-08-22 DOI: 10.1186/s40694-024-00182-5
Martin Weinhold
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