2021年地质微生物学专刊序言

正自2017年开始策划"地质微生物学专刊"以来,《微生物学报》已成功出版了3期,分别是2018年第4期、2019年第6期与2020年第6期。共发表文章54篇,得到了地质微生物学专家的关注和好评。为系统介绍该领域国内外的最新研究成果,并进一步扩大地质微生物学的影响、促进地质微生物学研究的发展,《微生物学报》专门组织了本期"地质微生物学"专刊。     

2022年地质微生物学专刊

<正>自2017年开始策划“地质微生物学专刊”以来,《微生物学报》已成功出版了4期,分别是2018年第4期、2019年第6期、2020年第6期、2021年第6期。共发表文章81篇,得到了地质微生物学领域学者的关注和好评。为系统介绍该领域国内外的最新研究成果,并进一步扩大地质微生物学的影响、促进地质微生物学研究的发展,我们特别组织了本期“地质微生物学”专刊。     

2023年地质微生物学专题序言

<正>自2017年开始策划“地质微生物学专刊”以来,《微生物学报》已成功出版了5期,分别是2018年第4期、2019年第6期、2020年第6期、2021年第6期、2022年第6期。共发表文章105篇,得到了地质微生物学领域学者的关注和好评。为了更加系统地介绍该领域国内外的最新研究成果,并进一步扩大地质微生物学的影响、促进地质微生物学研究的发展,我们特别组织了本期“地质微生物学”专题。     

2023年地质微生物学专题序言北大核心

自2017年开始策划“地质微生物学专刊”以来,《微生物学报》已成功出版了5期,分别是2018年第4期、2019年第6期、2020年第6期、2021年第6期、2022年第6期。共发表文章105篇,得到了地质微生物学领域学者的关注和好评。为了更加系统地介绍该领域国内外的最新研究成果,并进一步扩大地质微生物学的影响、促进地质微生物学研究的发展,我们特别组织了本期“地质微生物学”专题。     

2020污染土壤的生物修复专刊序言

生物修复技术,作为可持续发展的重要方向,因其环境友好、高效且无二次污染并能从根本上解决土壤污染问题而受到关注,已经在土壤污染治理中得到了广泛的应用。为了梳理和凝练生物修复技术的发展状况,本专刊收录了该研究领域的16篇论文,分别从植物修复、微生物修复、联合修复、重金属吸收积累的相关分子机制、资源化再利用等方面,详细阐述生物修复技术的发展动态,展望未来的发展趋势,为促进生物修复技术的发展提供参考。     

蛋白质组学专刊序言

<正>蛋白质是人体中最主要的物质组成。除了作为构筑生命的基石,人体细胞内的蛋白质执行和调控着几乎所有的生命过程和功能,例如蛋白质翻译、细胞周期调控和蛋白质合成和降解等。如果把整个细胞视为一个工厂的话,这个工厂是由相互关联的生产线组成的一个精准设计和时空动态调控的信号转导网     

生物制品专刊序言

生物制品是一类预防、诊断和治疗疫病的特殊制剂。生物制品的研发是融合微生物学、免疫学、分子生物学、细胞学、基因工程及发酵工艺等学科知识的综合技术体现。生物制品产业是整个生物技术产业的核心和热点。近年来,我国在生物制品研发方面取得了较大进步,为促进我国生物制品研究的交流,本期“生物制品”专刊集中展现了我国生物制品研究人员在预防生物制品、诊断制品、治疗生物制品领域所取得的最新进展。     

酶工程专刊序言

酶工程是酶学与工程科学融合的综合性科学技术,是现代生物技术的支柱之一。近年来我国在酶工程研究方面取得了较大进步,为促进国内酶工程研究的发展,本期"酶工程专刊"集中展现了我国酶工程专家学者在酶促生物转化、医药用酶、饲料用酶、环境修复用酶和生物能源用酶等领域所取得的最新进展。     

Further reading in geomicrobiology

In the wetland rhizosphere, high densities of lithotrophic Fe(II)-oxidizing bacteria (FeOB) and a favorable environment (i.e., high Fe(II) availability and microaerobic conditions) suggest that these organisms are actively contributing to the formation of Fe plaque on plant roots. We manipulated the presence/absence of an Fe(II)-oxidizing bacterium (Sideroxydans paludicola, strain BrT) in axenic hydroponic microcosms containing the roots of intact Juncus effusus (soft rush) plants to determine if FeOB affected total rates of rhizosphere Fe(II) oxidation and Fe plaque accumulation. Our experimental data highlight the importance of both FeOB and plants in influencing short-term rates of rhizosphere Fe oxidation. Over time scales ca. 1 wk, the FeOB increased Fe(II) oxidation rates by 1.3 to 1.7 times relative to FeOB-free microcosms. Across multiple experimental trials, Fe(II) oxidation rates were significantly correlated with root biomass, reflecting the importance of radial O ₂ loss in supporting rhizosphere Fe(II) oxidation. Rates of root Fe(III) plaque accumulation (time scales: 3 to 6 wk) were ～ 70 to 83% lower than expected based on the short-term Fe(II) oxidation rates and were unaffected by the presence/absence of FeOB. Decreasing rates of Fe(II) oxidation and Fe(III) plaque accumulation with increasing time scales indicate changes in rates of Fe(II) diffusion and radial O ₂ loss, shifts in the location of Fe oxide accumulation, or temporal changes in the microbial community within the microcosms. The microcosms used herein replicated many of the environmental characteristics of wetland systems and allowed us to demonstrate that FeOB can stimulate rates of Fe(II) oxidation in the wetland rhizosphere, a finding that has implications for the biogeochemical cycling of carbon, metals, and nutrients in wetland ecosystems.     

Further reading in geomicrobiology

Microbial volatilization of selenium (Se) may be an effective bioremediation technique to remove Se from dewatered sediments. In this laboratory study, soil management parameters (wetting and drying cycles, aeration, mixing, aggregate size, and water quality) were assessed for their influence upon Se volatilization. Selenium volatilization rates were higher under continuously moist conditions (—33 kPa) compared with wetting and drying cycles. After 6 months of incubation, a continuously moist seleniferous soil had lost approximately 21% of the Se inventory, whereas the same soil incubated under wetting and drying cycles had dissipated 7% of the total Se. Incubation under anoxia (N₂ atmosphere) increased evolution of dimethyl selenide (DMSe) 1.4‐fold compared with aerated conditions. When soil samples were incubated under static versus continuously mixed conditions, the latter treatment enhanced volatilization 1.8‐fold. This was attributed to increased availability of the Se to the methylating soil microbiota. The optimum aggregate size to promote volatilization of Se was 0.53 mm when compared to 0.15, 1, and 2 mm. The application of saline well water (7.5 dS m^‐1) over 6 months, compared with deionized water, had little effect on volatilization rates of Se from a highly saline (22 dS mr^‐1) seleniferous dewatered sediment. Each of these parameters should be considered in promoting volatilization of Se as a bioremediation approach in the cleanup of seleniferous sediments.