ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae020
Derek R Lovley, Dawn E Holmes
{"title":"Comment on \"Humic acid-dependent respiratory growth of Methanosarcina acetivorans involves pyrroloquinoline quinone\" by Yuanxu Song et al.","authors":"Derek R Lovley, Dawn E Holmes","doi":"10.1093/ismejo/wrae020","DOIUrl":"10.1093/ismejo/wrae020","url":null,"abstract":"","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10945356/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139747712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae019
Yuanxu Song, Rui Huang, Ling Li, Mingyu Wang, Shuguang Wang, James G Ferry, Zhen Yan
{"title":"Response to comment on \"Humic acid-dependent respiratory growth of Methanosarcina acetivorans involves pyrroloquinoline quinone\" by Yuanxu Song et al.","authors":"Yuanxu Song, Rui Huang, Ling Li, Mingyu Wang, Shuguang Wang, James G Ferry, Zhen Yan","doi":"10.1093/ismejo/wrae019","DOIUrl":"10.1093/ismejo/wrae019","url":null,"abstract":"","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10960953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139747714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tradeoffs between phage resistance and nitrogen fixation drive the evolution of genes essential for cyanobacterial heterocyst functionality.","authors":"Dikla Kolan, Esther Cattan-Tsaushu, Hagay Enav, Zohar Freiman, Nechama Malinsky-Rushansky, Shira Ninio, Sarit Avrani","doi":"10.1093/ismejo/wrad008","DOIUrl":"10.1093/ismejo/wrad008","url":null,"abstract":"<p><p>Harmful blooms caused by diazotrophic (nitrogen-fixing) Cyanobacteria are becoming increasingly frequent and negatively impact aquatic environments worldwide. Cyanophages (viruses infecting Cyanobacteria) can potentially regulate cyanobacterial blooms, yet Cyanobacteria can rapidly acquire mutations that provide protection against phage infection. Here, we provide novel insights into cyanophage:Cyanobacteria interactions by characterizing the resistance to phages in two species of diazotrophic Cyanobacteria: Nostoc sp. and Cylindrospermopsis raciborskii. Our results demonstrate that phage resistance is associated with a fitness tradeoff by which resistant Cyanobacteria have reduced ability to fix nitrogen and/or to survive nitrogen starvation. Furthermore, we use whole-genome sequence analysis of 58 Nostoc-resistant strains to identify several mutations associated with phage resistance, including in cell surface-related genes and regulatory genes involved in the development and function of heterocysts (cells specialized in nitrogen fixation). Finally, we employ phylogenetic analyses to show that most of these resistance genes are accessory genes whose evolution is impacted by lateral gene transfer events. Together, these results further our understanding of the interplay between diazotrophic Cyanobacteria and their phages and suggest that a tradeoff between phage resistance and nitrogen fixation affects the evolution of cell surface-related genes and of genes involved in heterocyst differentiation and nitrogen fixation.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":"18 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10811720/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139747727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae041
Paula C J Reis, Jackson M Tsuji, Cerrise Weiblen, Sherry L Schiff, Matthew Scott, Lisa Y Stein, Josh D Neufeld
{"title":"Enigmatic persistence of aerobic methanotrophs in oxygen-limiting freshwater habitats.","authors":"Paula C J Reis, Jackson M Tsuji, Cerrise Weiblen, Sherry L Schiff, Matthew Scott, Lisa Y Stein, Josh D Neufeld","doi":"10.1093/ismejo/wrae041","DOIUrl":"10.1093/ismejo/wrae041","url":null,"abstract":"<p><p>Methanotrophic bacteria mitigate emissions of the potent greenhouse gas methane (CH4) from a variety of anthropogenic and natural sources, including freshwater lakes, which are large sources of CH4 on a global scale. Despite a dependence on dioxygen (O2) for CH4 oxidation, abundant populations of putatively aerobic methanotrophs have been detected within microoxic and anoxic waters and sediments of lakes. Experimental work has demonstrated active aerobic methanotrophs under those conditions, but how they are able to persist and oxidize CH4 under O2 deficiency remains enigmatic. In this review, we discuss possible mechanisms that underpin the persistence and activity of aerobic methanotrophs under O2-limiting conditions in freshwater habitats, particularly lakes, summarize experimental evidence for microbial oxidation of CH4 by aerobic bacteria under low or no O2, and suggest future research directions to further explore the ecology and metabolism of aerobic methanotrophs in O2-limiting environments.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11008690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140102792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae193
Anna Voulgari-Kokota, Francesco Boatta, Ruud Rijkers, Bregje Wertheim, Leo W Beukeboom, Jacintha Ellers, Joana Falcao Salles
{"title":"High-sugar diet leads to loss of beneficial probiotics in housefly larvae guts.","authors":"Anna Voulgari-Kokota, Francesco Boatta, Ruud Rijkers, Bregje Wertheim, Leo W Beukeboom, Jacintha Ellers, Joana Falcao Salles","doi":"10.1093/ismejo/wrae193","DOIUrl":"10.1093/ismejo/wrae193","url":null,"abstract":"<p><p>The housefly (Musca domestica) is a common insect species with only a few recurrent bacterial taxa in its gut microbiota, because the numerous microbial acquisition routes in its septic habitats can favor transient microbes. Here, we investigated the role of the diet on the microbiota and the developmental success of a housefly strain reared on three substrates. We used a control wheat bran-based substrate, and added clotted cream and sucrose to make a high-fat, and a high-sugar substrate, respectively. The conducted survey revealed that, in contrast to the high-fat diet, the high-sugar diet caused lower developmental success and less diverse microbiota, in which several lactobacilli were replaced with Weissella bacterial phylotypes. Cultures with sucrose as the sole carbon source confirmed that a Weissella confusa strain, isolated from larvae, could utilize sucrose more efficiently than other tested lactic acid bacteria; a result also supported by gene function prediction analysis. Enhancing the rearing substrate with Limosilactobacillus fermentum and Lactiplantibacillus plantarum strains, which were isolated from control larvae, could not only revert the negative effect of the high-sucrose diet on development, but also increase the gut bacterial diversity. In our study, we show that the microbiota shifts in response to the high-sucrose diet did not benefit the host, that showed lower developmental success. In contrast, high-sucrose favored specific components of the microbiota, that continued to be enriched even after multiple generations, outcompeting beneficial bacteria. Also, microbiome manipulation showed the potential of probiotics to rescue host performance and restore the microbiome.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11495414/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142373436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae154
Matthew D Johnson, Hiroyuki D Sakai, Bindusmita Paul, Takuro Nunoura, Somavally Dalvi, Manasi Mudaliyar, Doulin C Shepherd, Michiru Shimizu, Shubha Udupa, Moriya Ohkuma, Norio Kurosawa, Debnath Ghosal
{"title":"Large attachment organelle mediates interaction between Nanobdellota archaeon YN1 and its host.","authors":"Matthew D Johnson, Hiroyuki D Sakai, Bindusmita Paul, Takuro Nunoura, Somavally Dalvi, Manasi Mudaliyar, Doulin C Shepherd, Michiru Shimizu, Shubha Udupa, Moriya Ohkuma, Norio Kurosawa, Debnath Ghosal","doi":"10.1093/ismejo/wrae154","DOIUrl":"10.1093/ismejo/wrae154","url":null,"abstract":"<p><p>DPANN archaea are an enigmatic superphylum that are difficult to isolate and culture in the laboratory due to their specific culture conditions and apparent ectosymbiotic lifestyle. Here, we successfully isolated and cultivated a coculture system of a novel Nanobdellota archaeon YN1 and its host Sulfurisphaera ohwakuensis YN1HA. We characterized the coculture system by complementary methods, including metagenomics and metabolic pathway analysis, fluorescence microscopy, and high-resolution electron cryo-tomography (cryoET). We show that YN1 is deficient in essential metabolic processes and requires host resources to proliferate. CryoET imaging revealed an enormous attachment organelle present in the YN1 envelope that forms a direct interaction with the host cytoplasm, bridging the two cells. Together, our results unravel the molecular and structural basis of ectosymbiotic relationship between YN1 and YN1HA. This research broadens our understanding of DPANN biology and the versatile nature of their ectosymbiotic relationships.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":10.8,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11420986/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae030
Cassondra L Vernier, Lan Anh Nguyen, Tim Gernat, Amy Cash Ahmed, Zhenqing Chen, Gene E Robinson
{"title":"Gut microbiota contribute to variations in honey bee foraging intensity.","authors":"Cassondra L Vernier, Lan Anh Nguyen, Tim Gernat, Amy Cash Ahmed, Zhenqing Chen, Gene E Robinson","doi":"10.1093/ismejo/wrae030","DOIUrl":"10.1093/ismejo/wrae030","url":null,"abstract":"<p><p>Gut microbiomes are increasingly recognized for mediating diverse biological aspects of their hosts, including complex behavioral phenotypes. Although many studies have reported that experimental disruptions to the gut microbial community result in atypical host behavior, studies that address how gut microbes contribute to adaptive behavioral trait variation are rare. Eusocial insects represent a powerful model to test this, because of their simple gut microbiota and complex division of labor characterized by colony-level variation in behavioral phenotypes. Although previous studies report correlational differences in gut microbial community associated with division of labor, here, we provide evidence that gut microbes play a causal role in defining differences in foraging behavior between European honey bees (Apis mellifera). We found that gut microbial community structure differed between hive-based nurse bees and bees that leave the hive to forage for floral resources. These differences were associated with variation in the abundance of individual microbes, including Bifidobacterium asteroides, Bombilactobacillus mellis, and Lactobacillus melliventris. Manipulations of colony demography and individual foraging experience suggested that differences in gut microbial community composition were associated with task experience. Moreover, single-microbe inoculations with B. asteroides, B. mellis, and L. melliventris caused effects on foraging intensity. These results demonstrate that gut microbes contribute to division of labor in a social insect, and support a role of gut microbes in modulating host behavioral trait variation.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11008687/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139984419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Active prophages in coral-associated Halomonas capable of lateral transduction.","authors":"Ziyao Liu, Kaihao Tang, Yiqing Zhou, Tianlang Liu, Yunxue Guo, Duoting Wu, Xiaoxue Wang","doi":"10.1093/ismejo/wrae085","DOIUrl":"10.1093/ismejo/wrae085","url":null,"abstract":"<p><p>Temperate phages can interact with bacterial hosts through lytic and lysogenic cycles via different mechanisms. Lysogeny has been identified as the major form of bacteria-phage interaction in the coral-associated microbiome. However, the lysogenic-to-lytic switch of temperate phages in ecologically important coral-associated bacteria and its ecological impact have not been extensively investigated. By studying the prophages in coral-associated Halomonas meridiana, we found that two prophages, Phm1 and Phm3, are inducible by the DNA-damaging agent mitomycin C and that Phm3 is spontaneously activated under normal cultivation conditions. Furthermore, Phm3 undergoes an atypical lytic pathway that can amplify and package adjacent host DNA, potentially resulting in lateral transduction. The induction of Phm3 triggered a process of cell lysis accompanied by the formation of outer membrane vesicles (OMVs) and Phm3 attached to OMVs. This unique cell-lysis process was controlled by a four-gene lytic module within Phm3. Further analysis of the Tara Ocean dataset revealed that Phm3 represents a new group of temperate phages that are widely distributed and transcriptionally active in the ocean. Therefore, the combination of lateral transduction mediated by temperate phages and OMV transmission offers a versatile strategy for host-phage coevolution in marine ecosystems.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11131426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140917344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae086
Qicheng Bei, Thomas Reitz, Martin Schädler, Logan H Hodgskiss, Jingjing Peng, Beatrix Schnabel, François Buscot, Nico Eisenhauer, Christa Schleper, Anna Heintz-Buschart
{"title":"Metabolic potential of Nitrososphaera-associated clades.","authors":"Qicheng Bei, Thomas Reitz, Martin Schädler, Logan H Hodgskiss, Jingjing Peng, Beatrix Schnabel, François Buscot, Nico Eisenhauer, Christa Schleper, Anna Heintz-Buschart","doi":"10.1093/ismejo/wrae086","DOIUrl":"10.1093/ismejo/wrae086","url":null,"abstract":"<p><p>Soil ammonia-oxidizing archaea (AOA) play a crucial role in converting ammonia to nitrite, thereby mobilizing reactive nitrogen species into their soluble form, with a significant impact on nitrogen losses from terrestrial soils. Yet, our knowledge regarding their diversity and functions remains limited. In this study, we reconstructed 97 high-quality AOA metagenome-assembled genomes (MAGs) from 180 soil samples collected in Central Germany during 2014-2019 summers. These MAGs were affiliated with the order Nitrososphaerales and clustered into four family-level clades (NS-α/γ/δ/ε). Among these MAGs, 75 belonged to the most abundant but least understood δ-clade. Within the δ-clade, the amoA genes in three MAGs from neutral soils showed a 99.5% similarity to the fosmid clone 54d9, which has served as representative of the δ-clade for the past two decades since even today no cultivated representatives are available. Seventy-two MAGs constituted a distinct δ sub-clade, and their abundance and expression activity were more than twice that of other MAGs in slightly acidic soils. Unlike the less abundant clades (α, γ, and ε), the δ-MAGs possessed multiple highly expressed intracellular and extracellular carbohydrate-active enzymes responsible for carbohydrate binding (CBM32) and degradation (GH5), along with highly expressed genes involved in ammonia oxidation. Together, these results suggest metabolic versatility of uncultured soil AOA and a potential mixotrophic or chemolithoheterotrophic lifestyle among 54d9-like AOA.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":" ","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11131427/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140923826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ISME JournalPub Date : 2024-01-08DOI: 10.1093/ismejo/wrae078
Gabrielle L Davidson, Ignacio A Cienfuegos, Sarah Dalesman
{"title":"Antibiotic-altered gut microbiota explain host memory plasticity and disrupt pace-of-life covariation for an aquatic snail.","authors":"Gabrielle L Davidson, Ignacio A Cienfuegos, Sarah Dalesman","doi":"10.1093/ismejo/wrae078","DOIUrl":"10.1093/ismejo/wrae078","url":null,"abstract":"<p><p>There is mounting evidence that intestinal microbiota communities and their genes (the gut microbiome) influence how animals behave and interact with their environment, driving individual variation. Individual covariation in behavioural, physiological, and cognitive traits among individuals along a fast-slow continuum is thought to arise because these traits are linked as part of an adaptive pace-of-life strategy. Yet paradoxically, trait intercorrelation is absent or disrupted in some populations but not others. Here, we provide experimental evidence from aquatic pond snails (Lymnaea stagnalis) that environmental stressors and the gut microbiota explain host phenotypic plasticity and disrupted covariation among traits. Antibiotic exposure at varying levels of ecologically relevant concentrations had multiple effects starting with gut microbiota diversity, differential abundance, and inferred function. Memory declined in line with antibiotic concentrations that caused the most profound gut microbiota disruption, and although pace-of-life traits remained rigid, their covariation did not. Moreover, inferred microbial metabolic pathways with biologically relevant host functions explained individual and treatment variation in phenotypes. Together, our results point to the gut microbiome as a proximate mechanism influencing the emergence and maintenance of phenotypic variation within populations and highlights the need to decipher whether the gut microbiome's sensitivity to environmental pollution facilitates adaptive or maladaptive phenotypic plasticity.</p>","PeriodicalId":50271,"journal":{"name":"ISME Journal","volume":"18 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11136587/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141176632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}