Environmental Microbiology Reports最新文献_第4页

Rooting for Success: The Role of Microorganisms in Promoting Growth and Resilience in Black Alder Seedlings 生根成功：微生物在促进黑桤木幼苗生长和恢复力中的作用。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-12-06 DOI: 10.1111/1758-2229.70060

Greta Striganavičiūtė, Dorotėja Vaitiekūnaitė, Milana Šilanskienė, Vaida Sirgedaitė-Šėžienė

{"title":"Rooting for Success: The Role of Microorganisms in Promoting Growth and Resilience in Black Alder Seedlings","authors":"Greta Striganavičiūtė, Dorotėja Vaitiekūnaitė, Milana Šilanskienė, Vaida Sirgedaitė-Šėžienė","doi":"10.1111/1758-2229.70060","DOIUrl":"10.1111/1758-2229.70060","url":null,"abstract":"Polycyclic aromatic hydrocarbons (PAHs) pose a global environmental risk, impacting human health. Enhancing phytoremediation with microbial-plant interactions could help mitigate these pollutants. However, tree responses to PAHs are unclear, necessitating controlled studies before field experiments. This study examined how PAH-degrading microbes affect black alder (Alnus glutinosa L.) seedlings grown hydroponically, hypothesizing that specific microbes improve growth and stress tolerance. Two half-sib families (41–65–7 K, 13–99–1 K) were inoculated with Rhodotorula sphaerocarpa (R.s.), Pseudomonas putida (P.p.), and Sphingobium yanoikuyae (S.y.). Results showed family-dependent and microbe-specific effects, with family 41–65–7 K showing enhanced shoot growth (threefold increase by R.s.) and higher carotenoid levels. Antioxidant enzyme activities varied: R.s. elevated superoxide dismutase activity by 4.8-fold in 13–99–1 K, while catalase activity increased but decreased in 41–65–7 K. Principal component analysis revealed distinct phytochemical clustering based on microbial treatment, highlighting genotype-specific modulations. Each microorganism had unique plant growth-promoting traits, with P.p. producing the most phytohormone and S.y. fixing nitrogen. These findings support targeted microbial inoculation for effective remediation of PAH-contaminated environments.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11621971/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142783520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lactic acid bacteria: A sustainable solution against phytopathogenic agents 乳酸菌：对抗植物病原体的可持续解决方案

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-12-02 DOI: 10.1111/1758-2229.70021

Andreia Saragoça, Henrique Canha, Carla M. R. Varanda, Patrick Materatski, Ana Isabel Cordeiro, José Gama

引用次数: 0

Influence of inoculum-to-substrate ratio on biomethane production via anaerobic digestion of biomass 菌底比对生物质厌氧消化产甲烷的影响

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-12-02 DOI: 10.1111/1758-2229.70009

Marvin T. Valentin, Daniel Ciolkosz, Andrzej Białowiec

{"title":"Influence of inoculum-to-substrate ratio on biomethane production via anaerobic digestion of biomass","authors":"Marvin T. Valentin, Daniel Ciolkosz, Andrzej Białowiec","doi":"10.1111/1758-2229.70009","DOIUrl":"10.1111/1758-2229.70009","url":null,"abstract":"The influence of the inoculum-to-substrate ratio (ISR) on anaerobic digestion (AD) of biomass in terms of methane yield and microbial community, was explored in this paper. The level of ISR can affect the AD performance in several ways. At extremely low ISR, volatile fatty acids (VFAs) accumuate, while inhibition occur at higher level of ISR. An ISR ranging from 1.0–2.0 was found optimal resulting in higher methane yield, organic matter removal and VFA degradation. Furthermore, a high ISR (2.0–4.0) is favourable to methanogenesis, while a lower ISR (<1.0) is prone to irreversible acidification. The range of ISR can shift the methanogenic pathway of AD to favour an acetoclastic or hydrogenotrophic response, indicated by the enriched group of microorganisms. The genus Methanosaeta (acetoclastic) and Methanobacterium (hydrogenotrophic) are the most enriched methanogens across all ISRs, while Firmicutes, Bacteroidetes, Proteobacteria and Spirochaetae are dominant in the bacterial community. Additionally, the interplay of substrate biodegradability and ISR potentially affects AD performance. Finally, novel equations are developed and proposed for characterizing the quantity of inoculum and substrate.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lactic acid bacteria: A sustainable solution against phytopathogenic agents 乳酸菌：对抗植物病原体的可持续解决方案

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-12-02 DOI: 10.1111/1758-2229.70021

Andreia Saragoça, Henrique Canha, Carla M. R. Varanda, Patrick Materatski, Ana Isabel Cordeiro, José Gama

引用次数: 0

To be or not to be a nonhost species: A case study of the Leptosphaeria maculans and Brassica carinata interaction 成为或不成为非宿主物种：Leptosphaeria maculans 和 Brassica carinata 相互作用的案例研究。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-28 DOI: 10.1111/1758-2229.70034

Julie M. Noah, Mathilde Gorse, Carole-Anne Romain, Elise J. Gay, Thierry Rouxel, Marie-Hélène Balesdent, Jessica L. Soyer

{"title":"To be or not to be a nonhost species: A case study of the Leptosphaeria maculans and Brassica carinata interaction","authors":"Julie M. Noah, Mathilde Gorse, Carole-Anne Romain, Elise J. Gay, Thierry Rouxel, Marie-Hélène Balesdent, Jessica L. Soyer","doi":"10.1111/1758-2229.70034","DOIUrl":"10.1111/1758-2229.70034","url":null,"abstract":"Leptosphaeria maculans is one of the major fungal pathogens on oilseed rape (Brassica napus), causing stem canker disease. The closely related Brassica species B. nigra, B. juncea, and B. carinata display extreme resistance toward stem canker. In this study, we demonstrate the nonhost status of B. carinata toward L. maculans in France through field experiments and inoculations performed in controlled conditions. A few isolates moderately adapted to B. carinata in controlled conditions were recovered in the field on B. nigra leaves, allowing us to investigate the unusual B. carinata–L. maculans interactions using molecular, macroscopic, and microscopic analyses. A cross between a L. maculans isolate adapted to B. napus and an isolate moderately adapted to B. carinata allowed the generation, in the lab, of recombinant L. maculans strains better adapted to B. carinata than the natural parental isolate obtained from B. nigra, and highlighted the polygenic determinism of the adaptation of L. maculans to B. carinata and B. napus. This biological material will allow further investigation of the molecular determinants of the adaptation of L. maculans to nonhost species and elucidate the genetic resistance basis of B. carinata.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laboratory Experiments Suggest a Limited Impact of Increased Nitrogen Deposition on Snow Algae Blooms 实验室实验表明氮沉降增加对雪藻华的影响有限

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-28 DOI: 10.1111/1758-2229.70052

Pablo Almela, James J. Elser, J. Joseph Giersch, Scott Hotaling, Victoria Rebbeck, Trinity L. Hamilton

{"title":"Laboratory Experiments Suggest a Limited Impact of Increased Nitrogen Deposition on Snow Algae Blooms","authors":"Pablo Almela, James J. Elser, J. Joseph Giersch, Scott Hotaling, Victoria Rebbeck, Trinity L. Hamilton","doi":"10.1111/1758-2229.70052","DOIUrl":"https://doi.org/10.1111/1758-2229.70052","url":null,"abstract":"Snow algal blooms decrease snow albedo and increase local melt rates. However, the causes behind the size and frequency of these blooms are still not well understood. One factor likely contributing is nutrient availability, specifically nitrogen and phosphorus. The nutrient requirements of the taxa responsible for these blooms are not known. Here, we assessed the growth of three commercial strains of snow algae under 24 different nutrient treatments that varied in both absolute and relative concentrations of nitrogen and phosphorus. After 38 days of incubation, we measured total biomass and cell size and estimated their effective albedo reduction surface. Snow algal strains tended to respond similarly and achieved bloom-like cell densities over a wide range of nutrient conditions. However, the molar ratio of nitrogen to phosphorus at which maximum biomass was achieved was between 4 and 7. Our data indicate a high requirement for phosphorus for snow algae and highlights phosphorus availability as a critical factor influencing the frequency and extent of snow algae blooms and their potential contribution to snow melt through altered albedo. Snow algae can thrive across a range of nitrogen (N) and phosphorus (P) conditions, with a higher P requirement for optimal growth. Our study suggests that increased N deposition may have a limited impact on snow algae bloom occurrence and size, emphasising P as a key factor influencing these blooms and their potential to accelerate snow melt by lowering albedo.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laboratory Experiments Suggest a Limited Impact of Increased Nitrogen Deposition on Snow Algae Blooms 实验室实验表明氮沉降增加对雪藻华的影响有限

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-28 DOI: 10.1111/1758-2229.70052

Pablo Almela, James J. Elser, J. Joseph Giersch, Scott Hotaling, Victoria Rebbeck, Trinity L. Hamilton

{"title":"Laboratory Experiments Suggest a Limited Impact of Increased Nitrogen Deposition on Snow Algae Blooms","authors":"Pablo Almela, James J. Elser, J. Joseph Giersch, Scott Hotaling, Victoria Rebbeck, Trinity L. Hamilton","doi":"10.1111/1758-2229.70052","DOIUrl":"https://doi.org/10.1111/1758-2229.70052","url":null,"abstract":"Snow algal blooms decrease snow albedo and increase local melt rates. However, the causes behind the size and frequency of these blooms are still not well understood. One factor likely contributing is nutrient availability, specifically nitrogen and phosphorus. The nutrient requirements of the taxa responsible for these blooms are not known. Here, we assessed the growth of three commercial strains of snow algae under 24 different nutrient treatments that varied in both absolute and relative concentrations of nitrogen and phosphorus. After 38 days of incubation, we measured total biomass and cell size and estimated their effective albedo reduction surface. Snow algal strains tended to respond similarly and achieved bloom-like cell densities over a wide range of nutrient conditions. However, the molar ratio of nitrogen to phosphorus at which maximum biomass was achieved was between 4 and 7. Our data indicate a high requirement for phosphorus for snow algae and highlights phosphorus availability as a critical factor influencing the frequency and extent of snow algae blooms and their potential contribution to snow melt through altered albedo. Snow algae can thrive across a range of nitrogen (N) and phosphorus (P) conditions, with a higher P requirement for optimal growth. Our study suggests that increased N deposition may have a limited impact on snow algae bloom occurrence and size, emphasising P as a key factor influencing these blooms and their potential to accelerate snow melt by lowering albedo.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142749096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aqueous copper geochemistry shapes the sediment microbial resistome in a recovering stream 水体铜地球化学形成了一条恢复溪流中的沉积微生物抗性组。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-27 DOI: 10.1111/1758-2229.70045

Paul G Helfrich, Johnathan Feldman, Eva Andrade-Barahona, Isaiah Robertson, Jordan Foster, Renee Hofacker, Gavin Dahlquist Selking, Cody S Sheik, Alysia Cox

引用次数: 0

Phenotypic and Genomic Insights Into Bacillus spp. and Peribacillus spp. of Spanish Olive Groves With Biotechnological Potential 对具有生物技术潜力的西班牙橄榄树林中的芽孢杆菌属和 Peribacillus 属的表型和基因组研究。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-27 DOI: 10.1111/1758-2229.70053

Julia Manetsberger, Natacha Caballero Gómez, Nabil Benomar, Graham Christie, Hikmate Abriouel

{"title":"Phenotypic and Genomic Insights Into Bacillus spp. and Peribacillus spp. of Spanish Olive Groves With Biotechnological Potential","authors":"Julia Manetsberger, Natacha Caballero Gómez, Nabil Benomar, Graham Christie, Hikmate Abriouel","doi":"10.1111/1758-2229.70053","DOIUrl":"10.1111/1758-2229.70053","url":null,"abstract":"Spore-forming organisms are an integral component of the rhizosphere, providing plants with significant advantages. Previous studies determined the antimicrobial activity of the olive sporobiota, identifying five candidates of particular relevance, belonging to the Bacillus subtilis, Peribacillus simplex and Bacillus cereus clade. This study aimed to determine their biotechnological properties, safety aspects, spore structure and resistance, and interaction with the environment through a combined microbiological and genomic approach. We report on the ability of these strains to produce hydrolytic and surface-active enzymes and provide evidence for differences in population behaviour through the formation of strong sessile or floating biofilms. Electron microscopic analysis revealed for the first time the presence of an exosporium layer in olive sporobiota isolates belonging to the P. simplex and B. cereus clade, including numerous pili-like structures on the latter. Spores showed significant differences in their resistance to wet heat, oxidising agents, and UV exposure. Whole genome sequencing of isolate Peribacillus frigoritolerans yielded information on its antimicrobial compound biosynthesis and environmental safety. Overall, our findings provide insights into the phenotypic, morphological and genetic variations of spore-formers from Spanish olive groves, which can be useful for the development of bioactive compounds in sustainable agriculture.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the cyst wall and surface microbiota in dormant embryos of the Antarctic calanoid copepod, Boeckella poppei 评估南极桡足类鲣鱼休眠胚胎的囊壁和表面微生物群。

IF 3.6 4区生物学

Environmental Microbiology Reports Pub Date : 2024-11-27 DOI: 10.1111/1758-2229.70035

Hunter B. Arrington, Sung Gu Lee, Jun Hyuck Lee, Joseph A. Covi

{"title":"Assessment of the cyst wall and surface microbiota in dormant embryos of the Antarctic calanoid copepod, Boeckella poppei","authors":"Hunter B. Arrington, Sung Gu Lee, Jun Hyuck Lee, Joseph A. Covi","doi":"10.1111/1758-2229.70035","DOIUrl":"10.1111/1758-2229.70035","url":null,"abstract":"Embryos of zooplankton from inland waters and estuaries can remain viable for years in an extreme state of metabolic suppression. How these embryos resist microbial attack with limited metabolic capacity for immune defence or repair is unknown. As a first step in evaluating resistance to microbial attack in dormant zooplankton, surface colonization of the Antarctic freshwater copepod, Boeckella poppei, was evaluated. Scanning electron micrographs demonstrate the outer two layers of a five-layered cyst wall in B. poppei fragment and create a complex environment for microbial colonization. By contrast, the third layer remains undamaged during years of embryo storage in native sediment. The absence of damage to the third layer indicates that it is resistant to degradation by microbial enzymes. Scanning electron microscopy and microbiome analysis using the 16S ribosomal subunit gene and internal transcribed spacer (ITS) region demonstrate the presence of a diverse microbial community on the embryo surface. Coverage of the embryos with microbial life varies from a sparse population with individual microbes to complete coverage by a thick biofilm. Extracellular polymeric substance binds debris and provides a structural element for the microbial community. Frequent observation of bacterial fission indicates that the biofilm is viable in stored sediments.","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"16 6","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142737872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0