Microbial EcologyPub Date : 2025-04-09DOI: 10.1007/s00248-025-02518-z
André C Pimentel, Cássia S Cesar, Arthur H B Martins, Marcos Martins, Rodrigo Cogni
{"title":"Wolbachia Offers Protection Against Two Common Natural Viruses of Drosophila.","authors":"André C Pimentel, Cássia S Cesar, Arthur H B Martins, Marcos Martins, Rodrigo Cogni","doi":"10.1007/s00248-025-02518-z","DOIUrl":"https://doi.org/10.1007/s00248-025-02518-z","url":null,"abstract":"<p><p>Wolbachia pipientis is a maternally transmitted endosymbiont infecting more than half of terrestrial arthropod species. Wolbachia can express parasitic phenotypes such as manipulation of host reproduction and mutualist phenotypes such as protection against RNA virus infections. Because Wolbachia can invade populations by reproductive manipulation and block virus infection, it is used to modify natural insect populations. However, the ecological importance of virus protection is not yet clear, especially due to scarce information on Wolbachia protection against viruses that are common in nature. We used systemic infection to investigate whether Wolbachia protects its host by suppressing the titer of DMELDAV and DMelNora virus, two viruses that commonly infect Drosophila melanogaster flies in natural populations. Antiviral protection was tested in three systems to assess the impact of Wolbachia strains across species: (1) a panel of Wolbachia strains transfected into Drosophila simulans, (2) two Wolbachia strains introgressed into the natural host D. melanogaster, and (3) two native Wolbachia strains in their natural hosts Drosophila baimaii and Drosophila tropicalis. We showed that certain Wolbachia strains provide protection against DMelNora virus and DMELDAV, and this protection is correlated with Wolbachia density, which is consistent with what has been observed in protection against other RNA viruses. Additionally, we found that Wolbachia does not protect its original host, D. melanogaster, from DMELDAV infection. While native Wolbachia can reduce DMELDAV titers in D. baimaii, this effect was not detected in D. tropicalis. Although the Wolbachia protection-induced phenotype seems to depend on the virus, the specific Wolbachia strain, and the host species, our findings suggest that antiviral protection may be one of the mutualistic effects that helps explain why Wolbachia is so widespread in arthropod populations.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"24"},"PeriodicalIF":3.3,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143811772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-04-07DOI: 10.1007/s00248-025-02521-4
J Burazerović, M Jovanović, Ž Savković, K Breka, M Stupar
{"title":"Finding the Right Host in the Darkness of the Cave-New Insights into the Ecology and Spatio-temporal Dynamics of Hyperparasitic Fungi (Arthrorhynchus nycteribiae, Laboulbeniales).","authors":"J Burazerović, M Jovanović, Ž Savković, K Breka, M Stupar","doi":"10.1007/s00248-025-02521-4","DOIUrl":"10.1007/s00248-025-02521-4","url":null,"abstract":"<p><p>The aim of this study was to determine the presence of the hyperparasitic fungus Arthrorhynchus nycteribiae and to analyze its spatio-temporal pattern in the two bat flies (Penicillidia conspicua and P. dufourii) parasitizing on bats. We collected 612 samples of bat flies from 400 bats in 20 caves in the Central Balkans. Hyperparasite was identified based on morphological and molecular analyses of rDNA genes (LSU and SSU). A. nycteribiae was reported for the first time in Bosnia and Herzegovina and Montenegro, and confirmed in Serbia. Of the 20 sites examined, we found A. nycteribiae at 11 sites. The prevalence of A. nycteribiae infection in the bats examined was approximately 17%. Miniopterus schreibersii harbored the highest number of bat flies and was the only bat species hosting the infected bat flies of the species P. conspicua. Our results showed significant differences in infection patterns during the different seasons: the highest prevalence of bat flies with hyperparasitic fungi was found in the summer season (23%) and the lowest in spring (2%). Female bat fly hosts showed a significantly higher prevalence of infection than male bat flies. This study makes an important contribution to the knowledge of the distribution of A. nycteribiae and to the understanding of complex parasite-host relationships in the poorly studied areas of the Central Balkans.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"23"},"PeriodicalIF":3.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143803809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-04-02DOI: 10.1007/s00248-025-02516-1
N Reed Alexander, Robert S Brown, Shrijana Duwadi, Spencer G Womble, David W Ludwig, Kylie C Moe, Justin N Murdock, Joshua L Phillips, Allison M Veach, Donald M Walker
{"title":"Leveraging Fine-Scale Variation and Heterogeneity of the Wetland Soil Microbiome to Predict Nutrient Flux on the Landscape.","authors":"N Reed Alexander, Robert S Brown, Shrijana Duwadi, Spencer G Womble, David W Ludwig, Kylie C Moe, Justin N Murdock, Joshua L Phillips, Allison M Veach, Donald M Walker","doi":"10.1007/s00248-025-02516-1","DOIUrl":"10.1007/s00248-025-02516-1","url":null,"abstract":"<p><p>Shifts in agricultural land use over the past 200 years have led to a loss of nearly 50% of existing wetlands in the USA, and agricultural activities contribute up to 65% of the nutrients that reach the Mississippi River Basin, directly contributing to biological disasters such as the hypoxic Gulf of Mexico \"Dead\" Zone. Federal efforts to construct and restore wetland habitats have been employed to mitigate the detrimental effects of eutrophication, with an emphasis on the restoration of ecosystem services such as nutrient cycling and retention. Soil microbial assemblages drive biogeochemical cycles and offer a unique and sensitive framework for the accurate evaluation, restoration, and management of ecosystem services. The purpose of this study was to elucidate patterns of soil bacteria within and among wetlands by developing diversity profiles from high-throughput sequencing data, link functional gene copy number of nitrogen cycling genes to measured nutrient flux rates collected from flow-through incubation cores, and predict nutrient flux using microbial assemblage composition. Soil microbial assemblages showed fine-scale turnover in soil cores collected across the topsoil horizon (0-5 cm; top vs bottom partitions) and were structured by restoration practices on the easements (tree planting, shallow water, remnant forest). Connections between soil assemblage composition, functional gene copy number, and nutrient flux rates show the potential for soil bacterial assemblages to be used as bioindicators for nutrient cycling on the landscape. In addition, the predictive accuracy of flux rates was improved when implementing deep learning models that paired connected samples across time.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"22"},"PeriodicalIF":3.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11965208/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-04-01DOI: 10.1007/s00248-025-02519-y
Sarena Banu, Katharina C Wollenberg Valero, Francisco Rivero
{"title":"Simulated Heat Waves Affect Cell Fate and Fitness in the Social Amoeba Dictyostelium discoideum.","authors":"Sarena Banu, Katharina C Wollenberg Valero, Francisco Rivero","doi":"10.1007/s00248-025-02519-y","DOIUrl":"10.1007/s00248-025-02519-y","url":null,"abstract":"<p><p>The effects of heatwaves at organism and population levels have been widely investigated; however, little is known about how they affect the development of cell populations and the fitness of the resulting organism. Disruptions caused by heatwaves are especially critical during early developmental stages in organisms lacking parental developmental protection or care. Here we use the social amoeba Dictyostelium discoideum, a soil microbe with a life cycle that transitions between single-cell and multicellular stages. D. discoideum thrives optimally at 22 °C and elevated temperatures impair (27 °C) or completely arrest (30 °C) growth, development, and spore yield. We established a simulated heatwave model in which vegetative cells were exposed to 27 °C for 3 days and studied the effects on the expression of early and cell type specific developmental genes using real-time quantitative PCR. A single heatwave severely impaired the expression of cyclic AMP-dependent early developmental gene markers (carA, acaA, pkaR, gtaC, tgrC1, and csaA) as well as that of prespore markers (cotB and spiA), while the expression of the prestalk marker ecmA was less affected. When mixed with heat-stressed cells, reporter cells expressing β-galactosidase grown at 22 °C preferentially occupy the spore mass of the fruiting body. Chimera assays of wild-type and reporter cells grown at optimal temperature or subjected to a heatwave confirmed a decreased fitness (contribution to chimeric fruiting bodies). We conclude that exposure of unprotected organisms at the single cell stage to a single heatwave has the potential to negatively impact their ability to cope with environmental extremes.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"21"},"PeriodicalIF":3.3,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11961495/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-03-27DOI: 10.1007/s00248-025-02517-0
Deepak Nain, Anjali Rana, Rhitoban Raychoudhury, Ruchira Sen
{"title":"Parasite-Induced Replacement of Host Microbiota: Impact of Xenos gadagkari Parasitization on the Microbiota of Polistes wattii.","authors":"Deepak Nain, Anjali Rana, Rhitoban Raychoudhury, Ruchira Sen","doi":"10.1007/s00248-025-02517-0","DOIUrl":"10.1007/s00248-025-02517-0","url":null,"abstract":"<p><p>The study of microbiota of social insects under different ecological conditions can provide important insights into the role of microbes in their biology and behavior. Polistes is one of the most widely distributed and extensively studied genera of social wasps, yet a comprehensive study on the microbiota of any species of Polistes or any primitively eusocial wasp is missing. Polistes wattii is an Asian wasp, which hibernates in winter and exhibits a biannual nest founding strategy. It is often parasitized by the strepsipteran endoparasite/parasitoid Xenos gadagkari, which changes the morpho-physiology and behavior of their hosts. In this study, we employ 16S rRNA amplicon sequencing, using the Oxford Nanopore platform, to study the microbial community of P. wattii and investigate the effects of seasonality, sex, and Xenos parasitism. We show that the microbiota differs in females from solitary foundress spring nests and multiple foundress summer nests. The microbiota also differs in males and females. Finally, we show that X. gadagkari parasitism replaces and homogenizes the microbiota of P. wattii. Unlike the unparasitized wasps, the microbiota of X. gadagkari parasitoids and parasitized wasps are dominated by Wolbachia and Providencia. Although the normal microbiota of P. wattii resembles that of highly eusocial vespid wasps, we show that the microbiota of parasitized P. wattii becomes more like the microbiota of strepsipterans. Therefore, it appears that X. gadagkari and other such strepsipteran parasitoids may have a bigger impact on the biology of their hosts than previously thought.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"20"},"PeriodicalIF":3.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11950098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143720552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-03-25DOI: 10.1007/s00248-025-02513-4
Likun Sun, Wenping Guan, Xisheng Tai, Wenrui Qi, Yindi Zhang, Yongqi Ma, Xuchun Sun, Yongli Lu, Dong Lin
{"title":"Research Progress on Microbial Nitrogen Conservation Technology and Mechanism of Microorganisms in Aerobic Composting.","authors":"Likun Sun, Wenping Guan, Xisheng Tai, Wenrui Qi, Yindi Zhang, Yongqi Ma, Xuchun Sun, Yongli Lu, Dong Lin","doi":"10.1007/s00248-025-02513-4","DOIUrl":"10.1007/s00248-025-02513-4","url":null,"abstract":"<p><p>With economic development and improvements in living standards, the demand for livestock products has steadily increased, resulting in the generation of large amounts of livestock manure, which seriously pollutes the ecological environment and poses a threat to human health. High-temperature aerobic composting is an effective method for treating livestock manure; however, traditional composting processes often lead to considerable nitrogen loss, reduced efficiency of soil conditioners, and increased emissions of harmful gases. The incorporation of physical, chemical, and biological additives can effectively retain nitrogen within the compost. Among these, microbial agents are particularly noteworthy as they precisely regulate the microbial community structure associated with nitrogen transformation during aerobic composting, altering the abundance of functional genes and enzyme activities involved in nitrogen transformation. This approach significantly reduces nitrogen loss and harmful gas emissions. This paper reviews the application effects of microbial agents on nitrogen retention during aerobic composting and explores the underlying regulatory mechanisms, aiming to provide theoretical guidance and new research directions for the application of microbial agents in enhancing nitrogen retention during aerobic composting.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"19"},"PeriodicalIF":3.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11937111/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143710630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-03-22DOI: 10.1007/s00248-025-02515-2
Pratiksha Acharya, Mourine J Yegon, Leonie Haferkemper, Benjamin Misteli, Christian Griebler, Simon Vitecek, Katrin Attermeyer
{"title":"Leaf Conditioning and Shredder Activity Shape Microbial Dynamics on Fine Particulate Organic Matter Produced During Decomposition of Different Leaf Litter in Streams.","authors":"Pratiksha Acharya, Mourine J Yegon, Leonie Haferkemper, Benjamin Misteli, Christian Griebler, Simon Vitecek, Katrin Attermeyer","doi":"10.1007/s00248-025-02515-2","DOIUrl":"10.1007/s00248-025-02515-2","url":null,"abstract":"<p><p>Leaf litter decomposition (LLD) is a key ecosystem function where invertebrate shredders produce large amounts of fine particulate organic matter (FPOM) that serves as a substrate for microbial assemblages. Here, we explore the shredder-produced FPOM composition and activity of FPOM-associated microbial communities in response to different leaf species and their conditioning. In a laboratory experiment, we fed leaves of different elemental compositions (alder, beech and maple), conditioned under oxic or anoxic conditions, to caddisfly larvae (Sericostoma sp.). We hypothesized differences in FPOM elemental and fatty acid composition and FPOM-associated microbial activity among the leaf species, conditioning, and two types of shredder-produced FPOM, i.e. shredded leaves and faecal pellets. Our results suggest that leaf conditioning and shredder activity play pivotal roles in shaping FPOM composition and FPOM-associated microbial activity. We observed lower C/N ratios with high-C/N litter (beech and maple leaves) after conditioning and no change in the elemental composition of the faecal pellets compared to the leaves. However, we observed differences in microbial fatty acid proportions and composition on leaves and faecal pellets with significantly higher fractions of bacterial fatty acids on faecal pellets than on leaves. We also noted a significant impact of leaf conditioning on the microbial activity of shredded leaves and faecal pellets, with a higher microbial growth efficiency observed on faecal pellets compared to ingested leaves. These findings highlight the crucial influence of leaf species and conditioning on the activity of shredder-produced FPOM, emphasizing the complex interplay between leaf properties and fate and microbial processes in streams.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"18"},"PeriodicalIF":3.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11928410/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143677057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Exploring the Bacteriome Diversity and Use as a Proxy for Climate Change and Human Impacts on Groundwater in Temperate and Tropical Countries.","authors":"Oana Teodora Moldovan, Erika Levei, Rodrigo Lopes Ferreira, Marconi Souza Silva, Ionuț Cornel Mirea","doi":"10.1007/s00248-025-02512-5","DOIUrl":"10.1007/s00248-025-02512-5","url":null,"abstract":"<p><p>This research investigates bacterial communities in various cave pool water and substrates from Brazil and Romania for their use as indicators of environmental impacts on groundwater. Regional and seasonal differences were observed even if, at the phylum level, common bacteria for both countries were found. Distinct patterns emerged at the genus level due to the different climates (tropical vs. temperate) and ecosystems. Chemoautotrophic conditions define an utterly different groundwater bacteriome than oligotrophic conditions independent of the temperature. Bacteria as a proxy for climate change were explored using seasonal changes in Romanian caves; specific genera become dominant in summer months, such as Acinetobacter, Paeniglutamicibacter, Polaromonas, and Saccharimonadales, indicating processes that occur during the low-water season. Climate change, particularly dryness, is expected to exacerbate these variations, threatening the stability of groundwater ecosystems. The research also identified anthropic pollution indicators (Vogesella, Cutibacterium) and potential decontaminants (Bacillus) in Brazilian cave waters. Anthropic pollution indicators, like Pseudoarthrobacter. were also found in Romanian caves. Other key bacteria genera, such as Flavobacterium, Pseudomonas, and Acinetobacter, are chemolithotrophs or involved in the nitrogen cycle, which is critical in supplying nutrients for the cave food web. Marked differences between water and substrate microbiomes within the same pools suggested that substrates may play a crucial, underexplored role in groundwater ecosystem processes. Our study found unassigned taxa, 3 phyla, 2 families, and 832 genera (> 40%) in the studied pools. The results underscore the need to further explore groundwater microbiomes as potentially crucial yet fragile ecosystems in the face of climate change and human impacts.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"17"},"PeriodicalIF":3.3,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11926030/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143670493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-03-17DOI: 10.1007/s00248-025-02514-3
S Blanco, R Viso, M Borrego-Ramos, R López-Flores, D Mota-Echeandía, M Tierra, J Herrero, C Castañeda
{"title":"The Ecology of Benthic Diatom Assemblages in Saline Wetlands of the Ebro Basin, NE Spain.","authors":"S Blanco, R Viso, M Borrego-Ramos, R López-Flores, D Mota-Echeandía, M Tierra, J Herrero, C Castañeda","doi":"10.1007/s00248-025-02514-3","DOIUrl":"10.1007/s00248-025-02514-3","url":null,"abstract":"<p><p>Benthic diatoms play a crucial role in aquatic ecosystems as indicators of environmental conditions and contributors to primary productivity. This study explores the ecology of benthic diatom assemblages in saline wetlands in NE Spain, focusing on the relationships between community parameters, species distributions, and environmental factors, particularly conductivity. Samples were collected from several wetlands representing a range of conductivity and trophic state. A total of 25 diatom taxa were identified, with assemblages dominated by halophilous species. Non-metric multidimensional scaling analysis revealed electrical conductivity (EC) as a primary factor shaping diatom communities, with nutrient levels as a secondary influence. Species exhibited varying responses to the EC gradient, with some showing overlapping niches and others clearly separated. The study found strong correlations between species abundance, occupancy, and their contribution to dissimilarity between sampling sites. More abundant and widespread species were key drivers of community structure and differentiation. Additionally, a significant relationship was observed between taxa occurrence and niche breadth, measured as EC tolerance. Species with broader tolerances tended to have higher occupancy rates, supporting ecological theories about generalist strategies in variable environments. Contrary to some previous research, rare taxa (3-5% in relative abundance) had a negligible effect on assemblage segregation among habitats. The findings suggest that both environmental filtering based on EC tolerance and species' inherent characteristics play important roles in shaping diatom community composition across these saline wetlands. This study contributes to our understanding of diatom ecology in saline habitats and highlights the importance of considering both local abundance and environmental tolerance in ecological studies of these communities. The insights gained can inform more accurate ecological models and improve our understanding of species distribution and community dynamics in saline aquatic ecosystems.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"16"},"PeriodicalIF":3.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11913965/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Microbial EcologyPub Date : 2025-03-14DOI: 10.1007/s00248-025-02509-0
Michele Castelli, Giulio Petroni
{"title":"An Evolutionary-Focused Review of the Holosporales (Alphaproteobacteria): Diversity, Host Interactions, and Taxonomic Re-ranking as Holosporineae Subord. Nov.","authors":"Michele Castelli, Giulio Petroni","doi":"10.1007/s00248-025-02509-0","DOIUrl":"10.1007/s00248-025-02509-0","url":null,"abstract":"<p><p>The order Holosporales is a broad and ancient lineage of bacteria obligatorily associated with eukaryotic hosts, mostly protists. Significantly, this is similar to other evolutionary distinct bacterial lineages (e.g. Rickettsiales and Chlamydiae). Here, we provide a detailed and comprehensive account on the current knowledge on the Holosporales. First, acknowledging the up-to-date phylogenetic reconstructions and recent nomenclatural proposals, we reevaluate their taxonomy, thus re-ranking them as a suborder, i.e. Holosporineae, within the order Rhodospirillales. Then, we examine the phylogenetic diversity of the Holosporineae, presenting the 20 described genera and many yet undescribed sub-lineages, as well as the variety of the respective environments of provenance and hosts, which belong to several different eukaryotic supergroups. Noteworthy representatives of the Holosporineae are the infectious intranuclear Holospora, the host manipulator 'Caedimonas', and the farmed shrimp pathogen 'Candidatus Hepatobacter'. Next, we put these bacteria in the broad context of the whole Holosporineae, by comparing with the available data on the least studied representatives, including genome sequences. Accordingly, we reason on the most probable evolutionary trajectories for host interactions, host specificity, and emergence of potential pathogens in aquaculture and possibly humans, as well as on future research directions to investigate those many open points on the Holosporineae.</p>","PeriodicalId":18708,"journal":{"name":"Microbial Ecology","volume":"88 1","pages":"15"},"PeriodicalIF":3.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11909080/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143630523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}