Biologia futura最新文献

Exploring the potential of plant astrobiology: adapting flora for extra-terrestrial habitats: a review. 探索植物天体生物学的潜力：使植物适应地外生境：综述。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-20 DOI: 10.1007/s42977-024-00245-z

Muhammad Waqas Mazhar, Muhammad Ishtiaq, Mehwish Maqbool, Eman A Mahmoud, Fahed A Almana, Hosam O Elansary

{"title":"Exploring the potential of plant astrobiology: adapting flora for extra-terrestrial habitats: a review.","authors":"Muhammad Waqas Mazhar, Muhammad Ishtiaq, Mehwish Maqbool, Eman A Mahmoud, Fahed A Almana, Hosam O Elansary","doi":"10.1007/s42977-024-00245-z","DOIUrl":"https://doi.org/10.1007/s42977-024-00245-z","url":null,"abstract":"In recent years, the realm of astrobiology has expanded beyond the search for microbial life to encompass the intriguing possibility of plant life beyond our planet. Plant astrobiology delves into the adaptations and mechanisms that might allow Earth's flora to flourish in the harsh conditions of outer space and other celestial bodies. This review aims to shed light on the captivating field of plant astrobiology, its implications, and the challenges and opportunities it presents. Plant astrobiology marries the disciplines of botany and astrobiology, challenging us to envision the growth of plants beyond Earth's atmosphere. Researchers in this field are not only exploring the potential for plant life on other planets and moons but also investigating how plants could be harnessed to sustain life during extended space missions. The review discusses how plants could adapt to environments characterized by low gravity, high radiation, extreme temperature fluctuations, and different atmospheric compositions. It highlights the physiological changes necessary for plants to survive and reproduce in these conditions. A pivotal concept is the integration of plants into closed-loop life support systems, where plants would play a crucial role in recycling waste products, generating oxygen, and producing food. The review delves into ongoing research involving genetic modifications and synthetic biology techniques to enhance plants' resilience in space environments. It addresses ethical considerations associated with altering organisms for off-planet habitation. Additionally, the review contemplates the psychological and emotional benefits of having greenery in enclosed, isolated space habitats. The review concludes that by employing advanced research methodologies, the field of plant astrobiology can greatly enhance the viability and sustainability of future space missions, highlighting the essential role of plants in sustaining long-term human presence beyond Earth.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142280024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancment of zebrafish (Danio rerio) immune and antioxidant systems using medicinal plant extracts encapsulated in alginate-chitosan nanocapsules with slow sustained release. 使用包裹在海藻酸盐-壳聚糖纳米胶囊中的药用植物提取物缓慢持续释放，增强斑马鱼（Danio rerio）的免疫和抗氧化系统。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-15 DOI: 10.1007/s42977-024-00244-0

Abdolmajid Valipour, Behrooz Heidari, Hadi Esmaeili Gouvarchin Ghaleh, Maryam Ghorbani, Alireza Shahriari, Maryam Iman, Ebrahim Salimi-Sabour

{"title":"Enhancment of zebrafish (Danio rerio) immune and antioxidant systems using medicinal plant extracts encapsulated in alginate-chitosan nanocapsules with slow sustained release.","authors":"Abdolmajid Valipour, Behrooz Heidari, Hadi Esmaeili Gouvarchin Ghaleh, Maryam Ghorbani, Alireza Shahriari, Maryam Iman, Ebrahim Salimi-Sabour","doi":"10.1007/s42977-024-00244-0","DOIUrl":"https://doi.org/10.1007/s42977-024-00244-0","url":null,"abstract":"This study aimed to screen 10 medicinal plant extracts on zebrafish (Danio rerio), evaluating their impact on the complement system, immunoglobulin M (IgM) levels, lysozyme, and peroxidase activity, while also enhancing their efficacy through the gradual release using alginate-chitosan nanocapsules. The prepared methanolic extracts were combined with fish feed. The fish were divided into 12 groups, including 10 treatment groups, a positive and a negative control group. Results showed varying impacts of the extracts on the immune and antioxidant systems, with Cinnamon (Cinnamon cassia) and Hypericum (Hypericum perforatum) extracts demonstrating the most significant effects. Subsequently, Cinnamon and Hypericum extract were encapsulated in alginate-chitosan nanocapsules to assess their impact on zebrafish immune parameters, separately and synergistically. Gradual release of the extracts from the nanocapsules was observed, with slower release at pH 2 compared to pH 7. Overall, Cinnamon and Hypericum extracts exhibited substantial immune system enhancement, and their encapsulation in nanocapsules improved their effects on zebrafish immune parameters. These findings suggest using these encapsulated extracts to enhance immune responses in aquatic organisms.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142280009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterisation of the complete chloroplast genome of Solanum tuberosum cv. White Lady 茄科植物 "白娘子 "完整叶绿体基因组的特征描述

IF 2.1 4区生物学

Biologia futura Pub Date : 2024-09-09 DOI: 10.1007/s42977-024-00240-4

Krisztián Frank, Erzsébet Nagy, János Taller, István Wolf, Zsolt Polgár

{"title":"Characterisation of the complete chloroplast genome of Solanum tuberosum cv. White Lady","authors":"Krisztián Frank, Erzsébet Nagy, János Taller, István Wolf, Zsolt Polgár","doi":"10.1007/s42977-024-00240-4","DOIUrl":"https://doi.org/10.1007/s42977-024-00240-4","url":null,"abstract":"Potato (Solanum tuberosum) is considered worldwide as one of the most important non-cereal food crops. As a result of its adaptability and worldwide production area, potato displays a vast phenotypical variability as well as genomic diversity. Chloroplast genomes have long been a core issue in plant molecular evolution and phylogenetic studies, and have an important role in revealing photosynthetic mechanisms, metabolic regulations and the adaptive evolution of plants. We sequenced the complete chloroplast genome of the Hungarian cultivar White Lady, which is 155 549 base pairs (bp) in length and is characterised by the typical quadripartite structure composed of a large- and small single-copy region (85 991 bp and 18 374 bp, respectively) interspersed by two identical inverted repeats (25 592 bp). The genome consists of 127 genes of which 82 are protein-coding, eight are ribosomal RNAs and 37 are transfer RNAs. The overall gene content and distribution of the genes on the White Lady chloroplast was the same as found in other potato chloroplasts. The alignment of S. tuberosum chloroplast genome sequences resulted in a highly resolved tree, with 10 out of the 13 nodes recovered having bootstrap values over 90%. By comparing the White Lady chloroplast genome with available S. tuberosum sequences we found that gene content and synteny are highly conserved. The new chloroplast sequence can support further studies of genetic diversity, resource conservation, evolution and applied agricultural research. The new sequence can support further potato genetic diversity and evolutionary studies, resource conservation, and also applied agricultural research.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of effect peripheral kisspeptin treatment on hypothalamo-pituitary-gonadal axis and hypothalamo-pituitary-adrenal axis in male rats. 研究外周kisspeptin处理对雄性大鼠下丘脑-垂体-性腺轴和下丘脑-垂体-肾上腺轴的影响

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-09 DOI: 10.1007/s42977-024-00241-3

Zafer Sahin, Osman Aktas, Omer Faruk Kalkan, Gokhan Cuce, Ahmet Alver, Elif Sahin, Seniz Erdem, Neslihan Saglam, Zulfikare Isik Solak Gormus, Selim Kutlu

{"title":"Investigation of effect peripheral kisspeptin treatment on hypothalamo-pituitary-gonadal axis and hypothalamo-pituitary-adrenal axis in male rats.","authors":"Zafer Sahin, Osman Aktas, Omer Faruk Kalkan, Gokhan Cuce, Ahmet Alver, Elif Sahin, Seniz Erdem, Neslihan Saglam, Zulfikare Isik Solak Gormus, Selim Kutlu","doi":"10.1007/s42977-024-00241-3","DOIUrl":"https://doi.org/10.1007/s42977-024-00241-3","url":null,"abstract":"Kisspeptin is an endogenous peptide hormone that is the most potent stimulator of the hypothalamo-pituitary-gonadal (HPG) axis. The HPG axis can be suppressed by the activation of the hypothalamo-pituitary-adrenal (HPA) axis. The physiological role of kisspeptin in the interaction of the HPG axis and the HPA axis is not fully understood yet. The purpose of the current study was to investigate the possible effects of peripheral injection (intraperitoneally) of kisspeptin on HPG axis and HPA axis activity as well. Adult male Wistar rats were randomly divided into seven groups as sham (control), kisspeptin (10 nmol), p234 (10 nmol), kisspeptin + p234, kisspeptin + antalarmin (10 mg/kg), kisspeptin + astressin2b (100 μg/kg), and kisspeptin + atosiban (0.250 mg/kg) (n = 10 each group). At the end of the experiment, the hypothalamus, pituitary gland, and serum samples of the rats were collected. Serum follicle-stimulating hormone and luteinizing hormone levels of the kisspeptin, kisspeptin + antalarmin and kisspeptin + astressin2b groups were significantly higher than the control group. Serum testosterone levels were significantly higher in the kisspeptin, kisspeptin + antalarmin, kisspeptin + astressin2b, and kisspeptin + atosiban groups that compared to the control group. There was no a significant difference in corticotropic releasing hormone immunoreactivity in the paraventricular nucleus of the hypothalamus, serum adrenocorticotropic hormone and corticosterone concentrations among all groups. Moreover, no significant difference was found in the concentration of pituitary oxytocin. Our results suggest that peripheral kisspeptin injection induces an activation in the HPG axis, but not in the HPA axis in male rats.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142153097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microbiological aspects of sewage odor problems in the urban environment - a review 城市环境中污水臭味问题的微生物学方面--综述

IF 2.1 4区生物学

Biologia futura Pub Date : 2024-09-09 DOI: 10.1007/s42977-024-00242-2

Tamás Felföldi

引用次数: 0

Taxonomic diversity and environmental tolerance of cultivable extremophilic bacteria from a high-altitude meltwater pond on Ojos del Salado (Chile). 来自 Ojos del Salado（智利）高海拔融水池塘的可培养嗜极细菌的分类多样性和环境耐受性。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-01 Epub Date: 2024-07-11 DOI: 10.1007/s42977-024-00229-z

Viktória Faragó, Melinda Megyes, Balázs Nagy, Andrea K Borsodi

{"title":"Taxonomic diversity and environmental tolerance of cultivable extremophilic bacteria from a high-altitude meltwater pond on Ojos del Salado (Chile).","authors":"Viktória Faragó, Melinda Megyes, Balázs Nagy, Andrea K Borsodi","doi":"10.1007/s42977-024-00229-z","DOIUrl":"10.1007/s42977-024-00229-z","url":null,"abstract":"Earth harbors unique environments where only microorganisms adapted to extreme conditions, known as extremophiles, can survive. This study focused on a high-altitude meltwater pond, located in the Puna de Atacama, Dry Andes. The extremophilic bacteria of this habitat must adapt to a range of extremities, including cold and dry climate, high UV radiation, high daily temperature fluctuations, low-nutrient availability, and negative water balance. This study aimed to explore the taxonomic diversity of cultivable extremophilic bacteria from sediment samples of a desiccated, high-altitude, meltwater pond using media with different organic matter contents and different incubation temperatures. Based on the 16S rRNA gene sequence analysis, the isolates were identified as members of the phyla Actinobacteria, Proteobacteria, and Firmicutes. The most abundant genera were Arthrobacter and Pseudoarthrobacter. The isolates had oligocarbophilic and psychrotrophic properties, suggesting that they have adapted to the extreme environmental parameters of their natural habitats. The results indicate a positive correlation between nutrient concentration and temperature tolerance.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of stagnation on the microbial quality of constructed water systems after COVID-19 shutdowns. COVID-19 停机后停滞对建造水系统微生物质量的影响。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-01 Epub Date: 2024-07-24 DOI: 10.1007/s42977-024-00231-5

Anett Lippai, Csaba Ágoston, Lilla Szunyogh

{"title":"The impact of stagnation on the microbial quality of constructed water systems after COVID-19 shutdowns.","authors":"Anett Lippai, Csaba Ágoston, Lilla Szunyogh","doi":"10.1007/s42977-024-00231-5","DOIUrl":"10.1007/s42977-024-00231-5","url":null,"abstract":"In response to COVID-19 pandemic, governments all over the world limited the movement of people and mandated temporary closure of different institutions. While, these measures helped to reduce the spread of COVID-19, stagnant water can cause water quality deterioration. Stagnation is considered in context with the proliferation of pathogenic and facultatively pathogenic bacteria which pose potential health risks to humans. The objective of this study was to document the hygienic microbiological status of different water systems after the first shutdowns (between 18th March 2020 and 18th May 2020) in Hungary in comparison with a reference period (between 3rd January 2020 to 17th March). During the reference period drinking waters were compliant > 95% of total samples to the parametric values. After the short period shutdowns, the ratio of tnon-compliant drinking water samples was 6.6%: mainly Pseudomonas aeruginosa (7%) and coliform bacteria (5%) resulted poor water quality. The microscopic analysis of drinking waters showed that after low water demand the values of non-compliant samples also increased due to the proliferation of Amoebozoa and other Protozoa species. The compliant pool waters' ratio was also high in the reference period (97-99%), while after the shutdowns more samples were positive in both pool operation type (fill-and-drain pools and pools with recirculation) due to the proliferation of P. aeruginosa (14%) and micrococci (12%). Legionella non-compliant samples in hot tap water did not show significant difference during both studied periods (15%) although after stagnation the Legionella CFU (colony forming unit) values of the samples increased markedly.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drug-degrading bacteria isolated from the effluent water of a sewage plant. 从污水处理厂废水中分离出的降解药物细菌。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-01 Epub Date: 2024-07-26 DOI: 10.1007/s42977-024-00236-0

T Mireisz, F B Horváth, N T Kashaija, R Farkas, I Boldizsár, E Tóth

{"title":"Drug-degrading bacteria isolated from the effluent water of a sewage plant.","authors":"T Mireisz, F B Horváth, N T Kashaija, R Farkas, I Boldizsár, E Tóth","doi":"10.1007/s42977-024-00236-0","DOIUrl":"10.1007/s42977-024-00236-0","url":null,"abstract":"Endocrine disruptors are potential environmental contaminants that can cause toxicity in aquatic ecosystems, so the Water Framework Directive has established limits for these compounds. During our research, 41 bacterial strains were isolated and identified from sewage effluent and tested for their degradation capacities for bisphenol A, 17β-estradiol, and nonylphenol. All the isolated bacteria belonged to the Gammaproteobacteria class of Pseudomonadota phylum (members of Citrobacter, Enterobacter, Escherichia, Klebsiella, Kluyvera, Leclercia, Raoultella, Shigella. Acinetobacter, Aeromonas, and Pseudomonas genera). During the experiments, only strains HF17, HF18 (Pseudomonas aeruginosa), and HF31 (Citrobacter freundii) were unable to grow on these compounds, all other bacterial strains could grow in the presence of the investigated endocrine disruptors. Based on the genomic analysis of the type strains, a set of genes involving aromatic compound degradation was detected, among the peripheral metabolic pathways, the quinate and benzoate degradation pathways proved to be widespread, among the central aromatic intermediates metabolism, the catechol branch of the beta-ketoadipate pathway was the most dominant. Pseudomonas fulva HF16 strain could utilize the investigated endocrine disruptors: bisphenol A by 34%, 17β-estradiol by 52%, and nonylphenol by 54%.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141765124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bacterial community composition of Hungarian salt-affected soils under different land uses. 不同土地利用条件下匈牙利受盐影响土壤的细菌群落组成。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-01 Epub Date: 2024-07-19 DOI: 10.1007/s42977-024-00235-1

Ravi Kumar Gangwar, András Táncsics, Marianna Makádi, Milán Farkas, Mátyás Cserháti, Erika Michéli, Márta Fuchs, Tamás Szegi

{"title":"Bacterial community composition of Hungarian salt-affected soils under different land uses.","authors":"Ravi Kumar Gangwar, András Táncsics, Marianna Makádi, Milán Farkas, Mátyás Cserháti, Erika Michéli, Márta Fuchs, Tamás Szegi","doi":"10.1007/s42977-024-00235-1","DOIUrl":"10.1007/s42977-024-00235-1","url":null,"abstract":"Salinization and sodification are serious and worldwide growing threats to healthy soil functions. Although plants developed a plethora of traits to cope with high salinity, soil bacteria are also essential players of the adaptation process. However, there is still lack of knowledge on how other biotic and abiotic factors, such as land use or different soil properties, affect the bacterial community structure of these soils. Therefore, besides soil chemical and physical investigations, bacterial communities of differently managed salt-affected soils were analysed through 16S rRNA gene Illumina amplicon sequencing and compared. Results have shown that land use and soil texture were the main drivers in shaping the bacterial community structure of the Hungarian salt-affected soils. It was observed that at undisturbed pasture and meadow sites, soil texture and the ratio of vegetation cover were the determinative factors shaping the bacterial community structures, mainly at the level of phylum Acidobacteriota. Sandy soil texture promoted the high abundance of members of the class Blastocatellia, while at the slightly disturbed meadow soil showing high clay content was dominated by members of the class Acidobacteriia. The OTUs belonging to the class Ktedonobacteria, which were reported mostly in geothermal sediments, reached a relatively high abundance in the meadow soil.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporal changes in the morphological and microbial diversity of biofilms on the surface of a submerged stone in the Danube River. 多瑙河水下石头表面生物膜形态和微生物多样性的时间变化。

IF 1.8 4区生物学

Biologia futura Pub Date : 2024-09-01 Epub Date: 2024-07-06 DOI: 10.1007/s42977-024-00228-0

Judit Makk, Marwene Toumi, Gergely Krett, Nóra Tünde Lange-Enyedi, Iris Schachner-Groehs, Alexander K T Kirschner, Erika Tóth

{"title":"Temporal changes in the morphological and microbial diversity of biofilms on the surface of a submerged stone in the Danube River.","authors":"Judit Makk, Marwene Toumi, Gergely Krett, Nóra Tünde Lange-Enyedi, Iris Schachner-Groehs, Alexander K T Kirschner, Erika Tóth","doi":"10.1007/s42977-024-00228-0","DOIUrl":"10.1007/s42977-024-00228-0","url":null,"abstract":"Epilithic biofilms are ubiquitous in large river environments and are crucial for biogeochemical processes, but their community structures and functions remain poorly understood. In this paper, the seasonal succession in the morphological structure and the taxonomic composition of an epilithic bacterial biofilm community at a polluted site of the Danube River were followed using electron microscopy, high-throughput 16S rRNA gene amplicon sequencing and multiplex/taxon-specific PCRs. The biofilm samples were collected from the same submerged stone and carried out bimonthly in the littoral zone of the Danube River, downstream of a large urban area. Scanning electron microscopy showed that the biofilm was composed of diatoms and a variety of bacteria with different morphologies. Based on amplicon sequencing, the bacterial communities were dominated by the phyla Pseudomonadota and Bacteroidota, while the most abundant archaea belonged to the phyla Nitrososphaerota and Nanoarchaeota. The changing environmental factors had an effect on the composition of the epilithic microbial community. Critical levels of faecal pollution in the water were associated with increased relative abundance of Sphaerotilus, a typical indicator of \"sewage fungus\", but the composition and diversity of the epilithic biofilms were also influenced by several other environmental factors such as temperature, water discharge and total suspended solids (TSS). The specific PCRs showed opportunistic pathogenic bacteria (e.g. Pseudomonas spp., Legionella spp., P. aeruginosa, L. pneumophila, Stenotrophomonas maltophilia) in some biofilm samples, but extended spectrum β-lactamase (ESBL) genes and macrolide resistance genes could not be detected.","PeriodicalId":8853,"journal":{"name":"Biologia futura","volume":null,"pages":null},"PeriodicalIF":1.8,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141544480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0