Journal of Microbiology最新文献_第10页

Mycobacterium tuberculosis PE_PGRS45 (Rv2615c) Promotes Recombinant Mycobacteria Intracellular Survival via Regulation of Innate Immunity, and Inhibition of Cell Apoptosis. 结核分枝杆菌 PE_PGRS45 (Rv2615c) 通过调节先天性免疫和抑制细胞凋亡促进重组分枝杆菌在细胞内存活。

IF 3 4区生物学

Journal of Microbiology Pub Date : 2024-01-01 Epub Date: 2024-02-09 DOI: 10.1007/s12275-023-00101-0

Tao Xu, Chutong Wang, Minying Li, Jing Wei, Zixuan He, Zhongqing Qian, Xiaojing Wang, Hongtao Wang

{"title":"Mycobacterium tuberculosis PE_PGRS45 (Rv2615c) Promotes Recombinant Mycobacteria Intracellular Survival via Regulation of Innate Immunity, and Inhibition of Cell Apoptosis.","authors":"Tao Xu, Chutong Wang, Minying Li, Jing Wei, Zixuan He, Zhongqing Qian, Xiaojing Wang, Hongtao Wang","doi":"10.1007/s12275-023-00101-0","DOIUrl":"10.1007/s12275-023-00101-0","url":null,"abstract":"Tuberculosis (TB), a bacterial infectious disease caused by Mycobacterium tuberculosis (M. tuberculosis), is a significant global public health problem. Mycobacterium tuberculosis expresses a unique family of PE_PGRS proteins that have been implicated in pathogenesis. Despite numerous studies, the functions of most PE_PGRS proteins in the pathogenesis of mycobacterium infections remain unclear. PE_PGRS45 (Rv2615c) is only found in pathogenic mycobacteria. In this study, we successfully constructed a recombinant Mycobacterium smegmatis (M. smegmatis) strain which heterologously expresses the PE_PGRS45 protein. We found that overexpression of this cell wall-associated protein enhanced bacterial viability under stress in vitro and cell survival in macrophages. MS_PE_PGRS45 decreased the secretion of pro-inflammatory cytokines such as IL-1β, IL-6, IL-12p40, and TNF-α. We also found that MS_PE_PGRS45 increased the expression of the anti-inflammatory cytokine IL-10 and altered macrophage-mediated immune responses. Furthermore, PE_PGRS45 enhanced the survival rate of M. smegmatis in macrophages by inhibiting cell apoptosis. Collectively, our findings show that PE_PGRS45 is a virulent factor actively involved in the interaction with the host macrophage.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":" ","pages":"49-62"},"PeriodicalIF":3.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139712418","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

Transcription Factors Tec1 and Tec2 Play Key Roles in the Hyphal Growth and Virulence of Mucor lusitanicus Through Increased Mitochondrial Oxidative Metabolism 转录因子 Tec1 和 Tec2 通过线粒体氧化代谢的增加在卢氏粘菌的茎髓生长和病毒性中发挥关键作用

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-12-19 DOI: 10.1007/s12275-023-00096-8

{"title":"Transcription Factors Tec1 and Tec2 Play Key Roles in the Hyphal Growth and Virulence of Mucor lusitanicus Through Increased Mitochondrial Oxidative Metabolism","authors":"","doi":"10.1007/s12275-023-00096-8","DOIUrl":"https://doi.org/10.1007/s12275-023-00096-8","url":null,"abstract":"<h3>Abstract</h3> Mucormycosis is a lethal and difficult-to-treat fungal infection caused by fungi of the order Mucorales. Mucor lusitanicus, a member of Mucorales, is commonly used as a model to understand disease pathogenesis. However, transcriptional control of hyphal growth and virulence in Mucorales is poorly understood. This study aimed to investigate the role of Tec proteins, which belong to the TEA/ATTS transcription factor family, in the hyphal development and virulence of M. lusitanicus. Unlike in the genome of Ascomycetes and Basidiomycetes, which have a single Tec homologue, in the genome of Mucorales, two Tec homologues, Tec1 and Tec2, were found, except in that of Phycomyces blakesleeanus, with only one Tec homologue. tec1 and tec2 overexpression in M. lusitanicus increased mycelial growth, mitochondrial content and activity, expression of the rhizoferrin synthetase-encoding gene rfs, and virulence in nematodes and wax moth larvae but decreased cAMP levels and protein kinase A (PKA) activity. Furthermore, tec1- and tec2-overexpressing strains required adequate mitochondrial metabolism to promote the virulent phenotype. The heterotrimeric G beta subunit 1-encoding gene deletant strain (Δgpb1) increased cAMP-PKA activity, downregulation of both tec genes, decreased both virulence and hyphal development, but tec1 and tec2 overexpression restored these defects. Overexpression of allele-mutated variants of Tec1(S332A) and Tec2(S168A) in the putative phosphorylation sites for PKA increased both virulence and hyphal growth of Δgpb1. These findings suggest that Tec homologues promote mycelial development and virulence by enhancing mitochondrial metabolism and rhizoferrin accumulation, providing new information for the rational control of the virulent phenotype of M. lusitanicus.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":"70 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138743527","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

Signification and Application of Mutator and Antimutator Phenotype-Induced Genetic Variations in Evolutionary Adaptation and Cancer Therapeutics 突变体和反突变体表型诱导的遗传变异在进化适应和癌症治疗中的意义和应用

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-12-15 DOI: 10.1007/s12275-023-00091-z

Woo-Hyun Chung

{"title":"Signification and Application of Mutator and Antimutator Phenotype-Induced Genetic Variations in Evolutionary Adaptation and Cancer Therapeutics","authors":"Woo-Hyun Chung","doi":"10.1007/s12275-023-00091-z","DOIUrl":"https://doi.org/10.1007/s12275-023-00091-z","url":null,"abstract":"Mutations present a dichotomy in their implications for cellular processes. They primarily arise from DNA replication errors or damage repair processes induced by environmental challenges. Cumulative mutations underlie genetic variations and drive evolution, yet also contribute to degenerative diseases such as cancer and aging. The mutator phenotype elucidates the heightened mutation rates observed in malignant tumors. Evolutionary adaptation, analogous to bacterial and eukaryotic systems, manifests through mutator phenotypes during changing environmental conditions, highlighting the delicate balance between advantageous mutations and their potentially detrimental consequences. Leveraging the genetic tractability of Saccharomyces cerevisiae offers unique insights into mutator phenotypes and genome instability akin to human cancers. Innovative reporter assays in yeast model organisms enable the detection of diverse genome alterations, aiding a comprehensive analysis of mutator phenotypes. Despite significant advancements, our understanding of the intricate mechanisms governing spontaneous mutation rates and preserving genetic integrity remains incomplete. This review outlines various cellular pathways affecting mutation rates and explores the role of mutator genes and mutation-derived phenotypes, particularly prevalent in malignant tumor cells. An in-depth comprehension of mutator and antimutator activities in yeast and higher eukaryotes holds promise for effective cancer control strategies.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":"7 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686851","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

Genetic and Functional Characterization of a Salicylate 1-monooxygenase Located on an Integrative and Conjugative Element (ICE) in Pseudomonas stutzeri AJR13 水杨酸 1-单加氧酶的遗传和功能特性鉴定--该酶位于假单胞菌 AJR13 的整合和共轭元件 (ICE) 上

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-12-15 DOI: 10.1007/s12275-023-00093-x

Igor Ivanovski, Gerben J. Zylstra

{"title":"Genetic and Functional Characterization of a Salicylate 1-monooxygenase Located on an Integrative and Conjugative Element (ICE) in Pseudomonas stutzeri AJR13","authors":"Igor Ivanovski, Gerben J. Zylstra","doi":"10.1007/s12275-023-00093-x","DOIUrl":"https://doi.org/10.1007/s12275-023-00093-x","url":null,"abstract":"Pseudomonas stutzeri strain AJR13 was isolated for growth on the related compounds biphenyl (BPH) and diphenylmethane (DPM). The BPH and DPM degradative pathway genes are present on an integrative and conjugative element (ICE) in the chromosome. Examination of the genome sequence of AJR13 revealed a gene encoding a salicylate 1-monooxygenase (salA) associated with the ICE even though AJR13 did not grow on salicylate. Transfer of the ICE to the well-studied Pseudomonas putida KT2440 resulted in a KT2440 strain that could grow on salicylate. Knockout mutagenesis of the salA gene on the ICE in KT2440 eliminated the ability to grow on salicylate. Complementation of the knockout with the cloned salA gene restored growth on salicylate. Transfer of the cloned salA gene under control of the lac promoter to KT2440 resulted in a strain that could grow on salicylate. Heterologous expression of the salA gene in E. coli BL21 DE3 resulted in the production of catechol from salicylate, confirming that it is indeed a salicylate 1-monooxygenase. Interestingly, transfer of the cloned salA gene under control of the lac promoter to AJR13 resulted in a strain that could now grow on salicylate, suggesting that gene expression for the downstream catechol pathway is intact.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":"82 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138686853","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

Transcriptomic Insights into Archaeal Nitrification in the Amundsen Sea Polynya, Antarctica 转录组揭示南极洲阿蒙森海多尼亚的古生物硝化过程

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-12-07 DOI: 10.1007/s12275-023-00090-0

Joo-Han Gwak, Samuel Imisi Awala, So-Jeong Kim, Sang-Hoon Lee, Eun-Jin Yang, Jisoo Park, Jinyoung Jung, Sung-Keun Rhee

{"title":"Transcriptomic Insights into Archaeal Nitrification in the Amundsen Sea Polynya, Antarctica","authors":"Joo-Han Gwak, Samuel Imisi Awala, So-Jeong Kim, Sang-Hoon Lee, Eun-Jin Yang, Jisoo Park, Jinyoung Jung, Sung-Keun Rhee","doi":"10.1007/s12275-023-00090-0","DOIUrl":"https://doi.org/10.1007/s12275-023-00090-0","url":null,"abstract":"Antarctic polynyas have the highest Southern Ocean summer primary productivity, and due to anthropogenic climate change, these areas have formed faster recently. Ammonia-oxidizing archaea (AOA) are among the most ubiquitous and abundant microorganisms in the ocean and play a primary role in the global nitrogen cycle. We utilized metagenomics and metatranscriptomics to gain insights into the physiology and metabolism of AOA in polar oceans, which are associated with ecosystem functioning. A polar-specific ecotype of AOA, from the “Candidatus Nitrosomarinus”-like group, was observed to be dominant in the Amundsen Sea Polynya (ASP), West Antarctica, during a succession of summer phytoplankton blooms. AOA had the highest transcriptional activity among prokaryotes during the bloom decline phase (DC). Metatranscriptomic analysis of key genes involved in ammonia oxidation, carbon fixation, transport, and cell division indicated that this polar AOA ecotype was actively involved in nitrification in the bloom DC in the ASP. This study revealed the physiological and metabolic traits of this key polar-type AOA in response to phytoplankton blooms in the ASP and provided insights into AOA functions in polar oceans.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":"63 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138552980","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

Structural and Functional Analyses of the Flavoprotein Disulfide Reductase FN0820 of Fusobacterium nucleatum. 核酸镰刀菌黄素蛋白二硫还原酶 FN0820 的结构和功能分析

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-12-01 Epub Date: 2023-12-20 DOI: 10.1007/s12275-023-00095-9

Hyunwoo Shin, Yeongjin Baek, Dukwon Lee, Yongbin Xu, Yonghoon Kwon, Inseong Jo, Nam-Chul Ha

引用次数: 0

Antimicrobial Efficacy of Allium cepa and Zingiber officinale Against the Milk-Borne Pathogen Listeria monocytogenes. 葱、姜对乳源性单核细胞增生李斯特菌的抑菌效果研究。

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-11-01 Epub Date: 2023-12-04 DOI: 10.1007/s12275-023-00086-w

Abirami Arasu, Nagaram Prabha, Durga Devi, Praveen Kumar Issac, Khaloud Mohammed Alarjani, Dunia A Al Farraj, Reem A Aljeidi, Dina S Hussein, Magesh Mohan, Jehad Zuhair Tayyeb, Ajay Guru, Jesu Arockiaraj

{"title":"Antimicrobial Efficacy of Allium cepa and Zingiber officinale Against the Milk-Borne Pathogen Listeria monocytogenes.","authors":"Abirami Arasu, Nagaram Prabha, Durga Devi, Praveen Kumar Issac, Khaloud Mohammed Alarjani, Dunia A Al Farraj, Reem A Aljeidi, Dina S Hussein, Magesh Mohan, Jehad Zuhair Tayyeb, Ajay Guru, Jesu Arockiaraj","doi":"10.1007/s12275-023-00086-w","DOIUrl":"10.1007/s12275-023-00086-w","url":null,"abstract":"Listeria monocytogenes is an important food-borne pathogen that causes listeriosis and has a high case fatality rate despite its low incidence. Medicinal plants and their secondary metabolites have been identified as potential antibacterial substances, serving as replacements for synthetic chemical compounds. The present studies emphasize two significant medicinal plants, Allium cepa and Zingiber officinale, and their efficacy against L. monocytogenes. Firstly, a bacterial isolate was obtained from milk and identified through morphology and biochemical reactions. The species of the isolate were further confirmed through 16S rRNA analysis. Furthermore, polar solvents such as methanol and ethanol were used for the extraction of secondary metabolites from A. cepa and Z. officinale. Crude phytochemical components were identified using phytochemical tests, FTIR, and GC-MS. Moreover, the antibacterial activity of the crude extract and its various concentrations were tested against L. monocytogenes. Among all, A. cepa in methanolic extracts showed significant inhibitory activity. Since, the A. cepa for methanolic crude extract was used to perform autography to assess its bactericidal activity. Subsequently, molecular docking was performed to determine the specific compound inhibition. The docking results revealed that four compounds displayed strong binding affinity with the virulence factor Listeriolysin-O of L. monocytogenes. Based on the above results, it can be concluded that the medicinal plant A. cepa has potential antibacterial effects against L. monocytogenes, particularly targeting its virulence.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":" ","pages":"993-1011"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138477933","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

Functional Characterization of DNA N-Glycosylase Ogg1 and Ntg1 in DNA Damage Stress of Cryptococcus neoformans. DNA N-糖基化酶 Ogg1 和 Ntg1 在新生隐球菌 DNA 损伤应激中的功能表征

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-11-01 Epub Date: 2023-12-06 DOI: 10.1007/s12275-023-00092-y

Kwang-Woo Jung, Sunhak Kwon, Jong-Hyun Jung, Sangyong Lim, Yong-Sun Bahn

{"title":"Functional Characterization of DNA N-Glycosylase Ogg1 and Ntg1 in DNA Damage Stress of Cryptococcus neoformans.","authors":"Kwang-Woo Jung, Sunhak Kwon, Jong-Hyun Jung, Sangyong Lim, Yong-Sun Bahn","doi":"10.1007/s12275-023-00092-y","DOIUrl":"10.1007/s12275-023-00092-y","url":null,"abstract":"Reactive oxygen species induce DNA strand breaks and DNA oxidation. DNA oxidation leads to DNA mismatches, resulting in mutations in the genome if not properly repaired. Homologous recombination (HR) and non-homologous end-joining (NHEJ) are required for DNA strand breaks, whereas the base excision repair system mainly repairs oxidized DNAs, such as 8-oxoguanine and thymine glycol, by cleaving the glycosidic bond, inserting correct nucleotides, and sealing the gap. Our previous studies revealed that the Rad53-Bdr1 pathway mainly controls DNA strand breaks through the regulation of HR- and NHEJ-related genes. However, the functional roles of genes involved in the base excision repair system remain elusive in Cryptococcus neoformans. In the present study, we identified OGG1 and NTG1 genes in the base excision repair system of C. neoformans, which are involved in DNA oxidation repair. The expression of OGG1 was induced in a Hog1-dependent manner under oxidative stress. On the other hand, the expression of NTG1 was strongly induced by DNA damage stress in a Rad53-independent manner. We demonstrated that the deletion of NTG1, but not OGG1, resulted in elevated susceptibility to DNA damage agents and oxidative stress inducers. Notably, the ntg1Δ mutant showed growth defects upon antifungal drug treatment. Although deletion of OGG1 or NTG1 did not increase mutation rates, the mutation profile of each ogg1Δ and ntg1Δ mutant was different from that of the wild-type strain. Taken together, we found that DNA N-glycosylase Ntg1 is required for oxidative DNA damage stress and antifungal drug resistance in C. neoformans.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":" ","pages":"981-992"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138487808","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

A Method for Physical Analysis of Recombination Intermediates in Saccharomyces cerevisiae. 对酿酒酵母中重组中间体进行物理分析的方法

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-11-01 Epub Date: 2023-12-11 DOI: 10.1007/s12275-023-00094-w

Kiwon Rhee, Hyungseok Choi, Keun P Kim, Jeong H Joo

{"title":"A Method for Physical Analysis of Recombination Intermediates in Saccharomyces cerevisiae.","authors":"Kiwon Rhee, Hyungseok Choi, Keun P Kim, Jeong H Joo","doi":"10.1007/s12275-023-00094-w","DOIUrl":"https://doi.org/10.1007/s12275-023-00094-w","url":null,"abstract":"Meiosis is a process through which diploid cells divide into haploid cells, thus promoting genetic diversity. This diversity arises from the formation of genetic crossovers (COs) that repair DNA double-strand breaks (DSBs), through homologous recombination (HR). Deficiencies in HR can lead to chromosomal abnormality resulting from chromosomal nondisjunction, and genetic disorders. Therefore, investigating the mechanisms underlying effective HR is crucial for reducing genome instability. Budding yeast serves as an ideal model for studying HR mechanisms due to its amenability to gene modifications and the ease of inducing synchronized meiosis to yield four spores. During meiosis, at the DNA level, programmed DSBs are repaired as COs or non-crossovers (NCOs) through structural alterations in the nascent D-loop, involving single-end invasions (SEIs) and double-Holliday junctions (dHJs). This repair occurs using homologous templates rather than sister templates. This protocol, using Southern blotting, allows for the analysis and monitoring of changes in DNA structures in the recombination process. One-dimensional (1D) gel electrophoresis is employed to detect DSBs, COs, and NCOs, while two-dimensional (2D) gel electrophoresis is utilized to identify joint molecules (JMs). Therefore, physical analysis is considered the most effective method for investigating the HR mechanism. Our protocol provides more comprehensive information than previous reports by introducing conditions for obtaining a greater number of cells from synchronized yeast and a method that can analyze not only meiotic/mitotic recombination but also mitotic replication.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":"61 11","pages":"939-951"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138803781","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

Dynamics of Microbial Community Structure, Function and Assembly Mechanism with Increasing Stand Age of Slash Pine (Pinus elliottii) Plantations in Houtian Sandy Area, South China. 后田沙地湿地松(Pinus elliottii)人工林微生物群落结构、功能及聚集机制随林龄增长的动态变化

IF 3 4区生物学

Journal of Microbiology Pub Date : 2023-11-01 Epub Date: 2023-11-29 DOI: 10.1007/s12275-023-00089-7

Xiaoyang Zhang, Si-Yi Xiong, Xiukun Wu, Bei-Bei Zeng, Yang-Mei Mo, Zhi-Cheng Deng, Qi Wei, Yang Gao, Licao Cui, Jianping Liu, Haozhi Long

{"title":"Dynamics of Microbial Community Structure, Function and Assembly Mechanism with Increasing Stand Age of Slash Pine (Pinus elliottii) Plantations in Houtian Sandy Area, South China.","authors":"Xiaoyang Zhang, Si-Yi Xiong, Xiukun Wu, Bei-Bei Zeng, Yang-Mei Mo, Zhi-Cheng Deng, Qi Wei, Yang Gao, Licao Cui, Jianping Liu, Haozhi Long","doi":"10.1007/s12275-023-00089-7","DOIUrl":"10.1007/s12275-023-00089-7","url":null,"abstract":"Establishing slash pine plantations is the primary method for restoring sandification land in the Houtian area of South China. However, the microbial variation pattern with increasing stand age remains unclear. In this study, we investigated microbial community structure and function in bare sandy land and four stand age gradients, exploring ecological processes that determine their assembly. We did not observe a significant increase in the absolute abundance of bacteria or fungi with stand age. Bacterial communities were dominated by Chloroflexi, Actinobacteria, Proteobacteria, and Acidobacteria; the relative abundance of Chloroflexi significantly declined while Proteobacteria and Acidobacteria significantly increased with stand age. Fungal communities showed succession at the genus level, with Pisolithus most abundant in soils of younger stands (1- and 6-year-old). Turnover of fungal communities was primarily driven by stochastic processes; both deterministic and stochastic processes influenced the assembly of bacterial communities, with the relative importance of stochastic processes gradually increasing with stand age. Bacterial and fungal communities showed the strongest correlation with the diameter at breast height, followed by soil available phosphorus and water content. Notably, there was a significant increase in the relative abundance of functional groups involved in nitrogen fixation and uptake as stand age increased. Overall, this study highlights the important effects of slash pine stand age on microbial communities in sandy lands and suggests attention to the nitrogen and phosphorus requirements of slash pine plantations in the later stages of sandy management.","PeriodicalId":16546,"journal":{"name":"Journal of Microbiology","volume":" ","pages":"953-966"},"PeriodicalIF":3.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138451704","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