ISME Journal最新文献_第5页

Temperature modulates dominance of a superinfecting Arctic virus in its unicellular algal host. 温度调节北极超级感染病毒在其单细胞藻类宿主中的优势。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae161

Claudia Meyer, Victoria L N Jackson, Keith Harrison, Ioanna Fouskari, Henk Bolhuis, Yael A Artzy-Randrup, Jef Huisman, Adam Monier, Corina P D Brussaard

{"title":"Temperature modulates dominance of a superinfecting Arctic virus in its unicellular algal host.","authors":"Claudia Meyer, Victoria L N Jackson, Keith Harrison, Ioanna Fouskari, Henk Bolhuis, Yael A Artzy-Randrup, Jef Huisman, Adam Monier, Corina P D Brussaard","doi":"10.1093/ismejo/wrae161","DOIUrl":"10.1093/ismejo/wrae161","url":null,"abstract":"Complex virus-virus interactions can arise when multiple viruses coinfect the same host, impacting infection outcomes with broader ecological and evolutionary significance for viruses and host. Yet, our knowledge regarding virus competition is still limited, especially for single-celled eukaryotic host-virus systems. Here, we report on mutual interference of two dsDNA viruses, MpoV-45T and MpoV-46T, competing for their Arctic algal host Micromonas polaris. Both viruses affected each other's gene expression and displayed reduced genome replication during coinfection. MpoV-45T was the dominant virus, likely due to interference in the DNA replication of is competitor. Even when its coinfection was delayed, the dominant virus still prevailed while genome production of the other virus was strongly suppressed. This contrasts with typical superinfection exclusion, where the primary infection prevents secondary infection by other viruses. Higher temperature made the suppressed virus a stronger competitor, signifying that global warming is likely to alter virus-virus interactions in Arctic waters.","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/PMC11370638/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142037596","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}

引用次数: 0

Coordinated transcriptional response to environmental stress by a Synechococcus virus. Synechococcus 病毒对环境压力的协调转录反应。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae032

Branko Rihtman, Alberto Torcello-Requena, Alevtina Mikhaylina, Richard J Puxty, Martha R J Clokie, Andrew D Millard, David J Scanlan

{"title":"Coordinated transcriptional response to environmental stress by a Synechococcus virus.","authors":"Branko Rihtman, Alberto Torcello-Requena, Alevtina Mikhaylina, Richard J Puxty, Martha R J Clokie, Andrew D Millard, David J Scanlan","doi":"10.1093/ismejo/wrae032","DOIUrl":"10.1093/ismejo/wrae032","url":null,"abstract":"Viruses are a major control on populations of microbes. Often, their virulence is examined in controlled laboratory conditions. Yet, in nature, environmental conditions lead to changes in host physiology and fitness that may impart both costs and benefits on viral success. Phosphorus (P) is a major abiotic control on the marine cyanobacterium Synechococcus. Some viruses infecting Synechococcus have acquired, from their host, a gene encoding a P substrate binding protein (PstS), thought to improve virus replication under phosphate starvation. Yet, pstS is uncommon among cyanobacterial viruses. Thus, we asked how infections with viruses lacking PstS are affected by P scarcity. We show that the production of infectious virus particles of such viruses is reduced in low P conditions. However, this reduction in progeny is not caused by impaired phage genome replication, thought to be a major sink for cellular phosphate. Instead, transcriptomic analysis showed that under low P conditions, a PstS-lacking cyanophage increased the expression of a specific gene set that included mazG, hli2, and gp43 encoding a pyrophosphatase, a high-light inducible protein and DNA polymerase, respectively. Moreover, several of the upregulated genes were controlled by the host's phoBR two-component system. We hypothesize that recycling and polymerization of nucleotides liberates free phosphate and thus allows viral morphogenesis, albeit at lower rates than when phosphate is replete or when phages encode pstS. Altogether, our data show how phage genomes, lacking obvious P-stress-related genes, have evolved to exploit their host's environmental sensing mechanisms to coordinate their own gene expression in response to resource limitation.","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/PMC10976474/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140023167","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}

引用次数: 0

Chronic bee paralysis virus exploits host antimicrobial peptides and alters gut microbiota composition to facilitate viral infection. 慢性蜜蜂麻痹病毒利用宿主的AMPs并改变肠道微生物群组成以促进病毒感染。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae051

Yanchun Deng, Sa Yang, Li Zhang, Chenxiao Chen, Xuefen Cheng, Chunsheng Hou

{"title":"Chronic bee paralysis virus exploits host antimicrobial peptides and alters gut microbiota composition to facilitate viral infection.","authors":"Yanchun Deng, Sa Yang, Li Zhang, Chenxiao Chen, Xuefen Cheng, Chunsheng Hou","doi":"10.1093/ismejo/wrae051","DOIUrl":"10.1093/ismejo/wrae051","url":null,"abstract":"The significance of gut microbiota in regulating animal immune response to viral infection is increasingly recognized. However, how chronic bee paralysis virus (CBPV) exploits host immune to disturb microbiota for its proliferation remains elusive. Through histopathological examination, we discovered that the hindgut harbored the highest level of CBPV, and displayed visible signs of damages. The metagenomic analysis showed that a notable reduction in the levels of Snodgrassella alvi and Lactobacillus apis, and a significant increase in the abundance of the opportunistic pathogens such as Enterobacter hormaechei and Enterobacter cloacae following CBPV infection. Subsequent co-inoculation experiments showed that these opportunistic pathogens facilitated the CBPV proliferation, leading to accelerated mortality in bees and exacerbation of bloated abdomen symptoms after CBPV infection. The expression level of antimicrobial peptide (AMP) was found to be significantly up-regulated by over 1000 times in response to CBPV infection, as demonstrated by subsequent transcriptome and quantitative real-time PCR investigations. In particular, through correlation analysis and a bacteriostatic test revealed that the AMPs did not exhibit any inhibitory effect against the two opportunistic pathogens. However, they did demonstrate inhibitory activity against S. alvi and L. apis. Our findings provide different evidence that the virus infection may stimulate and utilize the host's AMPs to eradicate probiotic species and facilitate the proliferation of opportunistic bacteria. This process weakens the intestinal barrier and ultimately resulting in the typical bloated abdomen.","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/PMC11014883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140190314","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}

引用次数: 0

SLC24A-mediated calcium exchange as an indispensable component of the diatom cell density-driven signaling pathway. SLC24A 介导的钙离子交换是硅藻细胞密度驱动信号途径不可或缺的组成部分。

IF 11 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae039

Xuehua Liu, Zhicheng Zuo, Xiujun Xie, Shan Gao, Songcui Wu, Wenhui Gu, Guangce Wang

{"title":"SLC24A-mediated calcium exchange as an indispensable component of the diatom cell density-driven signaling pathway.","authors":"Xuehua Liu, Zhicheng Zuo, Xiujun Xie, Shan Gao, Songcui Wu, Wenhui Gu, Guangce Wang","doi":"10.1093/ismejo/wrae039","DOIUrl":"10.1093/ismejo/wrae039","url":null,"abstract":"Diatom bloom is characterized by a rapid increase of population density. Perception of population density and physiological responses can significantly influence their survival strategies, subsequently impacting bloom fate. The population density itself can serve as a signal, which is perceived through chemical signals or chlorophyll fluorescence signals triggered by high cell density, and their intracellular signaling mechanisms remain to be elucidated. In this study, we focused on the model diatom, Phaeodactylum tricornutum, and designed an orthogonal experiment involving varying cell densities and light conditions, to stimulate the release of chemical signals and light-induced chlorophyll fluorescence signals. Utilizing RNA-Seq and Weighted Gene Co-expression Network Analysis, we identified four gene clusters displaying density-dependent expression patterns. Within these, a potential hub gene, PtSLC24A, encoding a Na+/Ca2+ exchanger, was identified. Based on molecular genetics, cellular physiology, computational structural biology, and in situ oceanic data, we propose a potential intracellular signaling mechanism related to cell density in marine diatoms using Ca2+: upon sensing population density signals mediated by chemical cues, the membrane-bound PtSLC24A facilitates the efflux of Ca2+ to maintain specific intracellular calcium levels, allowing the transduction of intracellular density signals, subsequently regulating physiological responses, including cell apoptosis, ultimately affecting algal blooms fate. These findings shed light on the calcium-mediated intracellular signaling mechanism of marine diatoms to changing population densities, and enhances our understanding of diatom bloom dynamics and their ecological implications.","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/PMC10982851/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140066162","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}

引用次数: 0

In vivo evolution of antimicrobial resistance in a biofilm model of Pseudomonas aeruginosa lung infection. 铜绿假单胞菌肺部感染生物膜模型中抗菌药耐药性的体内进化。

IF 11 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae036

Doaa Higazy, Anh Duc Pham, Coen van Hasselt, Niels Høiby, Lars Jelsbak, Claus Moser, Oana Ciofu

{"title":"In vivo evolution of antimicrobial resistance in a biofilm model of Pseudomonas aeruginosa lung infection.","authors":"Doaa Higazy, Anh Duc Pham, Coen van Hasselt, Niels Høiby, Lars Jelsbak, Claus Moser, Oana Ciofu","doi":"10.1093/ismejo/wrae036","DOIUrl":"10.1093/ismejo/wrae036","url":null,"abstract":"The evolution of antimicrobial resistance (AMR) in biofilms has been repeatedly studied by experimental evolution in vitro, but rarely in vivo. The complex microenvironment at the infection site imposes selective pressures on the bacterial biofilms, potentially influencing the development of AMR. We report here the development of AMR in an in vivo mouse model of Pseudomonas aeruginosa biofilm lung infection. The P. aeruginosa embedded in seaweed alginate beads underwent four successive lung infection passages with or without ciprofloxacin (CIP) exposure. The development of CIP resistance was assessed at each passage by population analysis of the bacterial populations recovered from the lungs of CIP-treated and control mice, with subsequent whole-genome sequencing of selected isolates. As inflammation plays a crucial role in shaping the microenvironment at the infection site, its impact was explored through the measurement of cytokine levels in the lung homogenate. A rapid development of AMR was observed starting from the second passage in the CIP-treated mice. Genetic analysis revealed mutations in nfxB, efflux pumps (mexZ), and two-component systems (parS) contribution to CIP resistance. The control group isolates exhibited mutations in the dipA gene, likely associated with biofilm dispersion. In the initial two passages, the CIP-treated group exhibited an elevated inflammatory response compared to the control group. This increase may potentially contribute to the release of mutagenic reactive oxygen species and the development of AMR. In conclusion, this study illustrates the complex relationship between infection, antibiotic treatment, and immune response.","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/PMC10980832/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140121292","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}

引用次数: 0

Microbial community composition predicts bacterial production across ocean ecosystems. 微生物群落组成可预测整个海洋生态系统的细菌产量。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae158

Elizabeth Connors, Avishek Dutta, Rebecca Trinh, Natalia Erazo, Srishti Dasarathy, Hugh Ducklow, J L Weissman, Yi-Chun Yeh, Oscar Schofield, Deborah Steinberg, Jed Fuhrman, Jeff S Bowman

{"title":"Microbial community composition predicts bacterial production across ocean ecosystems.","authors":"Elizabeth Connors, Avishek Dutta, Rebecca Trinh, Natalia Erazo, Srishti Dasarathy, Hugh Ducklow, J L Weissman, Yi-Chun Yeh, Oscar Schofield, Deborah Steinberg, Jed Fuhrman, Jeff S Bowman","doi":"10.1093/ismejo/wrae158","DOIUrl":"10.1093/ismejo/wrae158","url":null,"abstract":"Microbial ecological functions are an emergent property of community composition. For some ecological functions, this link is strong enough that community composition can be used to estimate the quantity of an ecological function. Here, we apply random forest regression models to compare the predictive performance of community composition and environmental data for bacterial production (BP). Using data from two independent long-term ecological research sites-Palmer LTER in Antarctica and Station SPOT in California-we found that community composition was a strong predictor of BP. The top performing model achieved an R2 of 0.84 and RMSE of 20.2 pmol L-1 hr-1 on independent validation data, outperforming a model based solely on environmental data (R2 = 0.32, RMSE = 51.4 pmol L-1 hr-1). We then operationalized our top performing model, estimating BP for 346 Antarctic samples from 2015 to 2020 for which only community composition data were available. Our predictions resolved spatial trends in BP with significance in the Antarctic (P value = 1 × 10-4) and highlighted important taxa for BP across ocean basins. Our results demonstrate a strong link between microbial community composition and microbial ecosystem function and begin to leverage long-term datasets to construct models of BP based on microbial community composition.","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/PMC11385589/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141894774","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}

引用次数: 0

Production of structurally diverse sphingolipids by anaerobic marine bacteria in the euxinic Black Sea water column. 黑海水体中的厌氧海洋细菌产生结构多样的鞘脂。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae153

Su Ding, F A Bastiaan von Meijenfeldt, Nicole J Bale, Jaap S Sinninghe Damsté, Laura Villanueva

{"title":"Production of structurally diverse sphingolipids by anaerobic marine bacteria in the euxinic Black Sea water column.","authors":"Su Ding, F A Bastiaan von Meijenfeldt, Nicole J Bale, Jaap S Sinninghe Damsté, Laura Villanueva","doi":"10.1093/ismejo/wrae153","DOIUrl":"10.1093/ismejo/wrae153","url":null,"abstract":"Microbial lipids, used as taxonomic markers and physiological indicators, have mainly been studied through cultivation. However, this approach is limited due to the scarcity of cultures of environmental microbes, thereby restricting insights into the diversity of lipids and their ecological roles. Addressing this limitation, here we apply metalipidomics combined with metagenomics in the Black Sea, classifying and tentatively identifying 1623 lipid-like species across 18 lipid classes. We discovered over 200 novel, abundant, and structurally diverse sphingolipids in euxinic waters, including unique 1-deoxysphingolipids with long-chain fatty acids and sulfur-containing groups. Sphingolipids were thought to be rare in bacteria and their molecular and ecological functions in bacterial membranes remain elusive. However, genomic analysis focused on sphingolipid biosynthesis genes revealed that members of 38 bacterial phyla in the Black Sea can synthesize sphingolipids, representing a 4-fold increase from previously known capabilities and accounting for up to 25% of the microbial community. These sphingolipids appear to be involved in oxidative stress response, cell wall remodeling, and are associated with the metabolism of nitrogen-containing molecules. Our findings underscore the effectiveness of multi-omics approaches in exploring microbial chemical ecology.","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/PMC11334938/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141903450","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}

引用次数: 0

Methanogenic symbionts of anaerobic ciliates are host and habitat specific. 厌氧纤毛虫的甲烷共生体具有宿主和生境特异性。

IF 10.8 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae164

Daniel Méndez-Sánchez, Anna Schrecengost, Johana Rotterová, Kateřina Koštířová, Roxanne A Beinart, Ivan Čepička

{"title":"Methanogenic symbionts of anaerobic ciliates are host and habitat specific.","authors":"Daniel Méndez-Sánchez, Anna Schrecengost, Johana Rotterová, Kateřina Koštířová, Roxanne A Beinart, Ivan Čepička","doi":"10.1093/ismejo/wrae164","DOIUrl":"10.1093/ismejo/wrae164","url":null,"abstract":"The association between anaerobic ciliates and methanogenic archaea has been recognized for over a century. Nevertheless, knowledge of these associations is limited to a few ciliate species, and so the identification of patterns of host-symbiont specificity has been largely speculative. In this study, we integrated microscopy and genetic identification to survey the methanogenic symbionts of 32 free-living anaerobic ciliate species, mainly from the order Metopida. Based on Sanger and Illumina sequencing of the 16S rRNA gene, our results show that a single methanogenic symbiont population, belonging to Methanobacterium, Methanoregula, or Methanocorpusculum, is dominant in each host strain. Moreover, the host's taxonomy (genus and above) and environment (i.e. endobiotic, marine/brackish, or freshwater) are linked with the methanogen identity at the genus level, demonstrating a strong specificity and fidelity in the association. We also established cultures containing artificially co-occurring anaerobic ciliate species harboring different methanogenic symbionts. This revealed that the host-methanogen relationship is stable over short timescales in cultures without evidence of methanogenic symbiont exchanges, although our intraspecific survey indicated that metopids also tend to replace their methanogens over longer evolutionary timescales. Therefore, anaerobic ciliates have adapted a mixed transmission mode to maintain and replace their methanogenic symbionts, allowing them to thrive in oxygen-depleted environments.","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/PMC11378729/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142009830","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}

引用次数: 0

Dryland microbiomes reveal community adaptations to desertification and climate change. 旱地微生物群揭示了群落对荒漠化和气候变化的适应性。

IF 11 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae056

Claudia Coleine, Manuel Delgado-Baquerizo, Jocelyne DiRuggiero, Emilio Guirado, Antoine L Harfouche, Cesar Perez-Fernandez, Brajesh K Singh, Laura Selbmann, Eleonora Egidi

{"title":"Dryland microbiomes reveal community adaptations to desertification and climate change.","authors":"Claudia Coleine, Manuel Delgado-Baquerizo, Jocelyne DiRuggiero, Emilio Guirado, Antoine L Harfouche, Cesar Perez-Fernandez, Brajesh K Singh, Laura Selbmann, Eleonora Egidi","doi":"10.1093/ismejo/wrae056","DOIUrl":"10.1093/ismejo/wrae056","url":null,"abstract":"Drylands account for 45% of the Earth's land area, supporting ~40% of the global population. These regions support some of the most extreme environments on Earth, characterized by extreme temperatures, low and variable rainfall, and low soil fertility. In these biomes, microorganisms provide vital ecosystem services and have evolved distinctive adaptation strategies to endure and flourish in the extreme. However, dryland microbiomes and the ecosystem services they provide are under threat due to intensifying desertification and climate change. In this review, we provide a synthesis of our current understanding of microbial life in drylands, emphasizing the remarkable diversity and adaptations of these communities. We then discuss anthropogenic threats, including the influence of climate change on dryland microbiomes and outline current knowledge gaps. Finally, we propose research priorities to address those gaps and safeguard the sustainability of these fragile biomes.","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/PMC11031246/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140327349","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}

引用次数: 0

Endosymbiont Tremblaya phenacola influences the reproduction of cotton mealybugs by regulating the mechanistic target of rapamycin pathway. 内共生菌 Tremblaya phenacola 通过调节 mTOR 途径影响棉花蚧的繁殖。

IF 11 1区环境科学与生态学

ISME Journal Pub Date : 2024-01-08 DOI: 10.1093/ismejo/wrae052

Jianyang Bai, Zhangqi Zuo, Haonan DuanMu, Meizhen Li, Haojie Tong, Yang Mei, Yiqi Xiao, Kang He, Mingxing Jiang, Shuping Wang, Fei Li

{"title":"Endosymbiont Tremblaya phenacola influences the reproduction of cotton mealybugs by regulating the mechanistic target of rapamycin pathway.","authors":"Jianyang Bai, Zhangqi Zuo, Haonan DuanMu, Meizhen Li, Haojie Tong, Yang Mei, Yiqi Xiao, Kang He, Mingxing Jiang, Shuping Wang, Fei Li","doi":"10.1093/ismejo/wrae052","DOIUrl":"10.1093/ismejo/wrae052","url":null,"abstract":"The intricate evolutionary dynamics of endosymbiotic relationships result in unique characteristics among the genomes of symbionts, which profoundly influence host insect phenotypes. Here, we investigated an endosymbiotic system in Phenacoccus solenopsis, a notorious pest of the subfamily Phenacoccinae. The endosymbiont, \"Candidatus Tremblaya phenacola\" (T. phenacola PSOL), persisted throughout the complete life cycle of female hosts and was more active during oviposition, whereas there was a significant decline in abundance after pupation in males. Genome sequencing yielded an endosymbiont genome of 221.1 kb in size, comprising seven contigs and originating from a chimeric arrangement between betaproteobacteria and gammaproteobacteria. A comprehensive analysis of amino acid metabolic pathways demonstrated complementarity between the host and endosymbiont metabolism. Elimination of T. phenacola PSOL through antibiotic treatment significantly decreased P. solenopsis fecundity. Weighted gene coexpression network analysis demonstrated a correlation between genes associated with essential amino acid synthesis and those associated with host meiosis and oocyte maturation. Moreover, altering endosymbiont abundance activated the host mechanistic target of rapamycin pathway, suggesting that changes in the amino acid abundance affected the host reproductive capabilities via this signal pathway. Taken together, these findings demonstrate a mechanism by which the endosymbiont T. phenacola PSOL contributed to high fecundity in P. solenopsis and provide new insights into nutritional compensation and coevolution of the endosymbiotic system.","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/PMC11014885/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140190371","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}

引用次数: 0