Advances in microbial physiology最新文献

The diversity of physiology and metabolism in chlorophototrophic bacteria. 叶绿素营养细菌生理代谢的多样性。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2025-05-12 DOI: 10.1016/bs.ampbs.2025.02.003

Isaac S White, Daniel P Canniffe, Andrew Hitchcock

{"title":"The diversity of physiology and metabolism in chlorophototrophic bacteria.","authors":"Isaac S White, Daniel P Canniffe, Andrew Hitchcock","doi":"10.1016/bs.ampbs.2025.02.003","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2025.02.003","url":null,"abstract":"Photosynthesis by (bacterio)chlorophyll-producing organisms (\"chlorophototrophy\") sustains virtually all life on Earth, providing the biosphere with food and energy. The oxygenic process carried out by plants, algae and cyanobacteria also generates the oxygen we breathe, and ancient cyanobacteria were responsible for oxygenating the atmosphere, creating the conditions that allowed the evolution of complex life. Cyanobacteria were also the endosymbiotic progenitors of chloroplasts, play major roles in biogeochemical cycles and as primary producers in aquatic ecosystems, and act as genetically tractable model organisms for studying oxygenic photosynthesis. In addition to the Cyanobacteriota, eight other bacterial phyla, namely Proteobacteria/Pseudomonadota, Chlorobiota, Chloroflexota, Bacillota, Acidobacteriota, Gemmatimonadota, Vulcanimicrobiota and Myxococcota contain at least one putative chlorophototrophic species, all of which perform a variant of anoxygenic photosynthesis, which does not yield oxygen as a by-product. These chlorophototrophic organisms display incredible diversity in the habitats that they colonise, and in their biochemistry, physiology and metabolism, with variation in the light-harvesting complexes and pigments they produce to utilise solar energy. Whilst some are very well understood, such as the proteobacterial 'purple bacteria', others have only been identified in the last few years and therefore relatively little is known about them - especially those that have not yet been isolated and cultured. In this chapter, we aim to summarise and compare the photosynthetic physiology and central metabolic processes of chlorophototrophic members from the nine phyla in which they are found, giving both a short historical perspective and highlighting gaps in our understanding.","PeriodicalId":519928,"journal":{"name":"Advances in microbial physiology","volume":"86 ","pages":"1-98"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144129714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cytochrome bd-type oxidases and environmental stressors in microbial physiology. 微生物生理学中的细胞色素bd型氧化酶和环境应激因子。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2024-10-30 DOI: 10.1016/bs.ampbs.2024.05.001

Vitaliy B Borisov, Giorgio Giardina, Gianluca Pistoia, Elena Forte

引用次数: 0

Organohalide respiration in Dehalococcoides strains represents a novel mode of proton motive force generation. Dehalococcoides菌株的有机卤化物呼吸作用是质子动力产生的一种新模式。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2025-02-06 DOI: 10.1016/bs.ampbs.2024.12.001

Lorenz Adrian, R Gary Sawers, Darja Deobald

{"title":"Organohalide respiration in Dehalococcoides strains represents a novel mode of proton motive force generation.","authors":"Lorenz Adrian, R Gary Sawers, Darja Deobald","doi":"10.1016/bs.ampbs.2024.12.001","DOIUrl":"10.1016/bs.ampbs.2024.12.001","url":null,"abstract":"Dehalococcoides strains grow obligately by respiration with hydrogen as an electron donor and halogenated compounds as terminal electron acceptors, catalysed by a single membrane-integrated protein supercomplex. Many insights have been gained into the respiratory complex based on physiological experiments, biochemical analyses, genome sequencing, and proteomics. Recent data acquired from activity tests with deuterated water and whole cells revealed the mode of energy conservation by this respiratory complex. The data shows that the proton required for periplasmic dehalogenation originates from inside the cell, suggesting an electrogenic protonation of the electron acceptor, while two protons are released into the periplasm by hydrogen oxidation. This surprisingly simple mechanism of pmf generation aligns with the subunit composition of the respiratory complex, the orientation of the subunits in the membrane, the absence of quinones as electron mediators, the rigidity of the cell membrane, as evidenced by its phospholipid fatty acid composition, and with proton channels formed by protonatable amino acid residues identified in the AlphaFold2-predicted structure of one of the membrane-spanning subunits. The respiration model is characterised by: (i) electrogenic protonation of the electron acceptor; (ii) reliance on a single protein complex for pmf generation without quinones; (iii) lack of transmembrane cytochromes; (iv) presence of both redox-active centres on the same side of the membrane, both facing the periplasm; and (v) restriction of the electron flow to periplasmic subunits of the respiratory complex. This type of respiration may represent an ancestral, quinone-free mechanism, offering inspiring new biotechnological applications.","PeriodicalId":519928,"journal":{"name":"Advances in microbial physiology","volume":"86 ","pages":"141-173"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144129712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time and function in the living world. 生命世界中的时间和功能。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2025-04-08 DOI: 10.1016/bs.ampbs.2025.02.001

Helen A Jenkins, Alun L Lloyd, Jackelyn M Kembro, David Lloyd

引用次数: 0

Copper homeostasis in Streptococcus and Neisseria: Known knowns and unknown knowns. 铜在链球菌和奈瑟菌体内的稳态：已知的和未知的。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2025-01-30 DOI: 10.1016/bs.ampbs.2024.11.001

Archie Howell, Safa Chogule, Karrera Y Djoko

引用次数: 0

A lysis less ordinary: The bacterial Type 10 Secretion System. 一个不太普通的酵解：细菌的10型分泌系统。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2025-02-27 DOI: 10.1016/bs.ampbs.2025.02.002

Mechna Chowdhury, Phillip J Stansfeld, Frank Sargent

引用次数: 0

Multiple roles for iron in microbial physiology: Bacterial oxygen sensing by heme-based sensors. 铁在微生物生理学中的多重作用：基于血红素传感器的细菌氧传感。

Advances in microbial physiology Pub Date : 2025-01-01 Epub Date: 2024-12-14 DOI: 10.1016/bs.ampbs.2024.10.001

Artur Sergunin, Jakub Vávra, Dominik Pašek, Toru Shimizu, Markéta Martínková

{"title":"Multiple roles for iron in microbial physiology: Bacterial oxygen sensing by heme-based sensors.","authors":"Artur Sergunin, Jakub Vávra, Dominik Pašek, Toru Shimizu, Markéta Martínková","doi":"10.1016/bs.ampbs.2024.10.001","DOIUrl":"https://doi.org/10.1016/bs.ampbs.2024.10.001","url":null,"abstract":"Bacterial oxygen sensing embodies a fascinating interplay between evolutionary pressures and physiological adaptations to varying oxygen levels. Throughout Earth's history, the composition of the atmosphere has undergone significant changes, from anoxic conditions to the gradual accumulation of oxygen. In response, microbial life has evolved diverse strategies to cope with these shifting oxygen levels, ranging from anaerobic metabolism to oxygen-dependent pathways crucial for energy production and cellular processes typical for eukaryotic, multicellular organisms. Of particular interest is the role of iron in bacterial oxygen sensing systems, which play pivotal roles in adaptation to changing oxygen levels. Only free iron, heme-iron, and non-heme iron directly sense oxygen. These iron-containing proteins, such as heme-containing sensors and iron-sulfur cluster proteins, regulate the expression of genes and activity of enzymes involved in oxidative stress defence, virulence, and biofilm formation, highlighting their significance in bacterial pathogenesis and environmental adaptation. Special attention in the review is paid to the mechanisms of oxygen detection and signal transduction from heme-containing sensing to functional domains in the case of bacterial heme-based oxygen sensors.","PeriodicalId":519928,"journal":{"name":"Advances in microbial physiology","volume":"86 ","pages":"257-329"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144129744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Role of sulfidogenic members of the gut microbiota in human disease. 肠道微生物群中的硫化物生成成员在人类疾病中的作用。

Advances in microbial physiology Pub Date : 2024-01-01 Epub Date: 2024-05-28 DOI: 10.1016/bs.ampbs.2024.04.003

Andreia I Pimenta, Raquel M Bernardino, Inês A C Pereira

{"title":"Role of sulfidogenic members of the gut microbiota in human disease.","authors":"Andreia I Pimenta, Raquel M Bernardino, Inês A C Pereira","doi":"10.1016/bs.ampbs.2024.04.003","DOIUrl":"10.1016/bs.ampbs.2024.04.003","url":null,"abstract":"The human gut flora comprises a dynamic network of bacterial species that coexist in a finely tuned equilibrium. The interaction with intestinal bacteria profoundly influences the host's development, metabolism, immunity, and overall health. Furthermore, dysbiosis, a disruption of the gut microbiota, can induce a variety of diseases, not exclusively associated with the intestinal tract. The increased consumption of animal protein, high-fat and high-sugar diets in Western countries has been implicated in the rise of chronic and inflammatory illnesses associated with dysbiosis. In particular, this diet leads to the overgrowth of sulfide-producing bacteria, known as sulfidogenic bacteria, which has been linked to inflammatory bowel diseases and colorectal cancer, among other disorders. Sulfidogenic bacteria include sulfate-reducing bacteria (Desulfovibrio spp.) and Bilophila wadsworthia among others, which convert organic and inorganic sulfur compounds to sulfide through the dissimilatory sulfite reduction pathway. At high concentrations, sulfide is cytotoxic and disrupts the integrity of the intestinal epithelium and mucus barrier, triggering inflammation. Besides producing sulfide, B. wadsworthia has revealed significant pathogenic potential, demonstrated in the ability to cause infection, adhere to intestinal cells, promote inflammation, and compromise the integrity of the colonic mucus layer. This review delves into the mechanisms by which taurine and sulfide-driven gut dysbiosis contribute to the pathogenesis of sulfidogenic bacteria, and discusses the role of these gut microbes, particularly B. wadsworthia, in human diseases.","PeriodicalId":519928,"journal":{"name":"Advances in microbial physiology","volume":"85 ","pages":"145-200"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141768427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The globins of cyanobacteria and green algae: An update. 蓝藻和绿藻的球蛋白：最新进展。

Advances in microbial physiology Pub Date : 2024-01-01 Epub Date: 2024-05-24 DOI: 10.1016/bs.ampbs.2024.04.004

Juliette T J Lecomte, Eric A Johnson

引用次数: 0

Preface. 序言

Advances in microbial physiology Pub Date : 2024-01-01 DOI: 10.1016/S0065-2911(24)00029-8

Robert K Poole, David J Kelly

引用次数: 0