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Physiology, Genomics, and Biotechnological Applications of Extremophiles最新文献

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Application of Extremophiles in Sustainable Agriculture 极端微生物在可持续农业中的应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch011
J. E. Nweze, Justus Amuche Nweze, Shruti Gupta
With the increasing demands for foods and other agriculture-based products, sustainable agricultural practices are the cornerstone for improving low-input agricultural production. In contrast to crop production, plant-microorganism interaction (PMI) plays a crucial role. PMI significantly raises productivity as well as maintaining the overall health of the crop. During harsh and extreme physiological conditions, plant-associated extremophilic microbes (PAEM) are known to contribute to crop production, survivability, and fitness. Thus, the application of extremophiles either in the form of biofertilizer or biopesticides is highly beneficial. Extremophiles have been adapted to withstand diverse harsh environmental conditions. They possess unique mechanisms at the molecular level to produce enormous potential extremozymes and bioactive compounds. Consequently, extremophiles represent the foundation of efficient and sustainable agriculture. This chapter introduces the significance and application of plant-associated extremophilic microbes in sustainable agriculture.
随着对粮食和其他农产品需求的增加,可持续农业做法是改善低投入农业生产的基石。与作物生产相比,植物-微生物相互作用(PMI)起着至关重要的作用。PMI显著提高了生产力,并保持了作物的整体健康。在恶劣和极端的生理条件下,植物相关的嗜极微生物(PAEM)对作物产量、生存能力和适应性做出了贡献。因此,以生物肥料或生物农药的形式施用极端微生物是非常有益的。极端微生物已经适应了各种恶劣的环境条件。它们在分子水平上具有独特的机制,可以产生巨大的潜在极端酶和生物活性化合物。因此,极端微生物是高效和可持续农业的基础。本章介绍了植物相关极端微生物在可持续农业中的意义和应用。
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引用次数: 0
Genome Editing and CRISPR/Cas System of Extremophiles and Its Applications 极端微生物基因组编辑与CRISPR/Cas系统及其应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch007
S. Panicker
Extremophiles will be the choice of next generation industrial biotechnology (NGIB) as they are known to be contaminant resistant, but engineering their genomes has always been difficult and time consuming task. CRIPR/Cas (clustered regularly interspaced short palindromic repeat and CRISPR associated proteins) system can be employed for this reason. The genome of an industrially important halophile (i.e., Halomonas) was edited to study a combined effect of four different genes on glucose breakdown and production of poly (3-hydroxybutyrate-co-3-hydroxyvalerate). This editing has resulted in 16-fold increase of 3HV, and the mutants generated by CRIPR/Cas system were significantly effective in synthesizing PHBV. Unfortunately, this system does not always work, specifically in extremophilic microorganisms because Cas9 or Cpf1 are from mesophilic bacteria. Therefore, alternatively, the endogenous CRISPR/Cas system is used for editing the genomes of such organisms. This genome editing of extremophiles will open the doors for developing next generation industrial biotechnology (NGIB).
极端微生物将成为下一代工业生物技术(NGIB)的选择,因为它们已知具有抗污染能力,但对它们的基因组进行工程设计一直是一项困难且耗时的任务。因此可以采用CRISPR /Cas (clustered regularly interspaced short palindromic repeat and CRISPR associated proteins)系统。编辑了一种工业上重要的嗜盐菌(即盐单胞菌)的基因组,以研究四种不同基因对葡萄糖分解和聚(3-羟基丁酸酯-co-3-羟基戊酸酯)生产的综合影响。这种编辑使3HV增加了16倍,并且由CRIPR/Cas系统产生的突变体在合成PHBV方面效果显著。不幸的是,这个系统并不总是有效,特别是在嗜极微生物中,因为Cas9或Cpf1来自嗜中温细菌。因此,可以选择使用内源性CRISPR/Cas系统来编辑这些生物的基因组。此次对极端微生物进行基因组编辑,将为开发下一代工业生物技术(NGIB)打开大门。
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引用次数: 0
Industrial Applications of Enzymes From Extremophiles 极端微生物酶的工业应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch010
P. Arya, Shivani M Yagnik, R. Panchal, Kiransinh N. Rajput, V. Raval
Extremophilic microorganisms have developed a variety of molecular tactics to exist in extreme environments. Researchers are fascinated by extremophiles and unearth various enzymes from these fascinating microbes. Extremozymes are astonishing biocatalysts with distinctive properties of catalysis and stability under a multitude of daunting conditions of salt, pH, organic solvents, and temperature, which open up new possibilities for biocatalysis and biotransformation and outcompetes mesophilic counterparts. Biotechnological implications include simple, immobilized, as well as whole-cell applications. Stability in organic solvents adds to the asymmetric catalysis and thereby exemplifies the applicability of extremozymes and in fostering biobased economies. Marine, cold-adapted enzymes, and those that help in the removal of a toxic hazardous substance from the environment are obvious choices for food industries and bioremediation. The major area of application and research emphasis includes textile, detergents, food, dairy, agriculture, and environmental remediation.
极端微生物已经发展出多种分子策略来生存在极端环境中。研究人员对极端微生物着迷,并从这些迷人的微生物中挖掘出各种酶。极端酶是一种令人惊叹的生物催化剂,在盐、pH、有机溶剂和温度等多种令人望而生畏的条件下具有独特的催化性能和稳定性,为生物催化和生物转化开辟了新的可能性,并超越了亲中温酶。生物技术的影响包括简单的、固定化的以及全细胞的应用。在有机溶剂中的稳定性增加了不对称催化作用,从而证明了极端酶在促进生物经济方面的适用性。海洋、适应寒冷的酶,以及那些有助于从环境中去除有毒有害物质的酶,是食品工业和生物修复的明显选择。主要应用领域和研究重点包括纺织、洗涤剂、食品、乳制品、农业和环境修复。
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引用次数: 1
Alkalophiles
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch003
Vishal Mevada, Urvisha Beladiya, H. Gandhi, A. Mangrola, Rajesh Patel
Alkalophiles are a class of extremophiles capable of survival in alkaline (pH roughly 8.5–11) environments, growing optimally around a pH of 10. At such high pH, the normal cellular functions are detrimentally affected for mesophilic organisms. The alkalophiles successfully manage stability of DNA, plasma membrane, and function of cytosolic enzymes, as well as other unfavorable physiological changes at such an elevated pH. A recent development in NextGen sequencing technology facilitates identifying uncultivable organisms amongst the extreme environments. In recent years, distribution of alkalophiles was reported from Soda Lake, marine environments, saline deserts, and natural thermal vents to natural water bodies. Although alkalophiles were first reported in 1889, their enzymatic and industrial applications still make them an interesting area of research. This chapter provides basic information on environmental distribution, taxonomy, physiology, bioenergetics, and survival mechanism and enzymes produced by alkalophilic organisms.
嗜碱菌是一类能够在碱性(pH值约为8.5-11)环境中生存的极端微生物,在pH值为10时生长最佳。在如此高的pH值下,嗜酸性生物的正常细胞功能受到不利影响。在如此高的ph下,嗜碱菌成功地控制了DNA、质膜和细胞质酶功能的稳定性,以及其他不利的生理变化。NextGen测序技术的最新发展有助于在极端环境中识别不可培养的生物。近年来,从盐碱湖、海洋环境、盐碱沙漠、天然热喷口到天然水体均有报道了嗜碱菌的分布。虽然在1889年首次报道了亲碱试剂,但它们的酶和工业应用仍然使它们成为一个有趣的研究领域。本章介绍了嗜碱生物的环境分布、分类、生理、能量学、生存机制和产生的酶。
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引用次数: 3
Application of Extremophiles in Food Industries 极端微生物在食品工业中的应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch012
A. P. Leanwala
Extremophiles have adapted themselves at extreme environmental conditions like high or low temperature, pH, salinity, and pressure. Extremophiles may be either acidophilic, alkaliphilic, halophilic, thermophilic, psychrophilic, oligotrophic, endolithic, and xerophilic. There extremozymes are found to be biocatalysts and producers of novel enzymes which can be employed in many industries like food, cosmetics, chemical, pharmaceuticals, etc. Currently the researchers have developed keen interest in studying and utilizing the abilities of these extremophiles in food industries. Metabolic pathways and extremozymes are being studied by the researchers and they are trying to utilize its characteristics and also engineer these extremophiles. In food industries, one of the extremophiles, Rhodothermus marinus, which has been an excellent biocatalyst producing lipase as an enzyme, could be utilized to improve to aroma of food and add natural flavour to food. So, the current chapter will deal with the various applications of these extremophiles.
极端微生物已经适应了极端的环境条件,比如高温或低温、pH值、盐度和压力。极端微生物可以是嗜酸、嗜碱、嗜盐、嗜热、嗜冷、少营养、内生和嗜干。这些极端酶被发现是生物催化剂和新型酶的生产者,可用于许多行业,如食品,化妆品,化工,制药等。目前研究人员对研究和利用这些极端微生物在食品工业中的能力产生了浓厚的兴趣。研究人员正在研究代谢途径和极端酶他们试图利用它的特性来设计这些极端微生物。在食品工业中,海洋红热菌是一种极好的生产脂肪酶的生物催化剂,可以用来改善食品的香气,增加食品的天然风味。因此,本章将讨论这些极端微生物的各种应用。
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引用次数: 3
Extremophiles in Sustainable Bioenergy Production as Microbial Fuel Cells 微生物燃料电池在可持续生物能源生产中的应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch014
Mukta Kothari, Leena Gaurav Kulkarni, D. Gupta, R. Thombre
Microbial fuel cell (MFC) technology is considered one of the renewable sources of energy for the production of bioelectricity from waste. Due to the depletion of fossil fuels and environmental considerations, MFC haa garnered increasing importance as it is a sustainable and environmentally-friendly method of generation of bioenergy. In MFC, electroactive bacteria (EAB) and biofilms are harnessed to convert organic substances to electrical energy. Extremophiles survive in extreme environments, and they have demonstrated potential applications in microbial electrical systems (MES) and MFC technology. The key limitations of MFC are the low power output and engineering constraints of the fuel cell. Hence, it is imperative to understand the genetics, key metabolic pathways, and molecular mechanisms of the EAB for enhancing the power generation in MFC. This chapter gives a brief overview of the scope and applications of extremophiles in wastewater treatment, bioelectricity, and biohydrogen production using MFC, eventually enhancing the functional efficiency of MFC.
微生物燃料电池(MFC)技术被认为是利用废弃物生产生物电的一种可再生能源。由于化石燃料的枯竭和对环境的考虑,MFC作为一种可持续和环境友好的生物能源生产方法,已经获得了越来越多的重要性。在MFC中,利用电活性细菌(EAB)和生物膜将有机物质转化为电能。极端微生物在极端环境中生存,它们在微生物电气系统(MES)和MFC技术中具有潜在的应用前景。MFC的主要限制是低功率输出和燃料电池的工程限制。因此,了解EAB的遗传、关键代谢途径和分子机制是提高MFC发电能力的必要条件。本章简要概述了极端微生物在MFC废水处理、生物发电和生物制氢等方面的范围和应用,最终提高了MFC的功能效率。
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引用次数: 1
Thermophiles 嗜热微生物
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch004
A. Mangrola, Rajesh Patel, P. Dudhagara, H. Gandhi, A. Ghelani, Kunal R. Jain, Hardik Shah, Vishal Mevada
Microorganisms are the diverse living things present on the Earth. India has numerous unique thermal habitats that comprise several diversity hotspots, such as hot springs, deep oceanic hydrothermal openings, anaerobic biodigesters. The existence of life at high temperatures is quite attractive. At both ends of the temperature range suited with life, only microorganisms can grow and survive. Thermophiles are a typical extremophilic microbes capable of existence in high temperature environments. At such high temperature, the ordinary cellular functions adversely affected for mesophiles. The thermophiles effectively manage instability of the plasma membrane, inactivation of enzymes instability of DNA, as well as other hostile physiological variations at such an elevated temperature. Heat shock proteins (Hsps) have established the most attention in thermophiles under stress condition, which is well described in this chapter. This chapter offers comprehensive information about thermophiles, physiology, metabolism, enzymes of metabolic pathways, and various adaptation mechanisms.
微生物是地球上存在的多种生物。印度有许多独特的热栖息地,包括几个多样性热点,如温泉,深海热液开口,厌氧生物消化池。生命在高温下的存在是很有吸引力的。在适合生命生存的温度范围的两端,只有微生物才能生长和生存。嗜热菌是一种典型的能在高温环境中生存的嗜极微生物。在这样的高温下,嗜中菌的普通细胞功能受到不利影响。在这样的高温下,嗜热菌有效地控制质膜的不稳定性,酶的失活,DNA的不稳定性,以及其他不利的生理变化。热休克蛋白(Hsps)是在应激条件下最受关注的嗜热生物,在本章中有很好的描述。本章全面介绍了嗜热菌的生理、代谢、代谢途径中的酶以及各种适应机制。
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引用次数: 2
Application of Extremophiles in Medicine and Pharmaceutical Industries 极端微生物在医药工业中的应用
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch013
N. Patel, Shivani M Yagnik, Dhritiksha M Baria, V. Raval
Extremophiles are at center stage of scientific interest owing to their peculiar properties in terms of physiology, ecology, biochemistry, and molecular genetics. The bio-active compounds from extremophiles involve various types of extremolytes. The functional applicability of extremophiles has been far-reaching. Looking to the global scenario medical, pharmaceutical and allied healthcare sectors have a persistent surge for a novel anticancer, antimicrobial, stable drug deliverables, nutraceuticals, fine chemicals, natural antioxidants, and bio-polymers compounds. Genetic engineering tools clubbed with -omics approach enhance and better the chances for applicability of the extremophilic metabolites in varied sectors of red and yellow biotechnology. The chapter provides an insight into the various types of bio-active molecules from extremophiles and their wide biotechnological applicability in the medical and pharmaceutical industry.
极端微生物由于其在生理学、生态学、生物化学和分子遗传学方面的特殊特性而处于科学研究的中心。来自极端微生物的生物活性化合物涉及各种类型的极端水解物。极端微生物的功能适用性是深远的。放眼全球,医疗、制药和相关医疗保健行业对新型抗癌、抗菌剂、稳定药物交付物、营养保健品、精细化学品、天然抗氧化剂和生物聚合物化合物的需求持续增长。结合组学方法的基因工程工具增强和改善了极端微生物代谢产物在红黄生物技术各个领域的适用性。本章提供了对极端微生物的各种生物活性分子及其在医疗和制药工业中广泛的生物技术适用性的见解。
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引用次数: 2
Biochemistry Behind Protein Adaptations in Extremophiles 极端微生物蛋白质适应背后的生物化学
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch006
Kailas V. Fuldeore, N. Patel, Aradhana Hitesh bhai Bavarva, Vrushali Wagh
Extremophiles are the mortals that tolerate in the most limiting and aggravating conditions to life. Because of these fantastic ecological criticisms, extremophiles have substituted innumerable intriguing transformations to cell films, proteins, and extracellular metabolites. These stimulatingly regulated usual particles and frameworks as of now play parts in numerous biotechnological fields. Compounds from extremophilic microorganisms as a rule catalyse synthetic responses in non-standard conditions. Such conditions advance accumulation, precipitation, and denaturation, diminishing the movement of most non-extremophilic catalysts, regularly because of the shortfall of adequate hydration. Extremophilic catalysts can go after hydration by means of modifications particularly to their surface through more noteworthy surface charges and expanded sub-atomic movement. These assets have permitted few extremophilic compounds to work within the sight of non-fluid natural solvents, with potential for plan of valuable impetuses.
极端微生物是一种能在最恶劣的条件下生存的生物。由于这些奇妙的生态批评,极端微生物已经取代了无数有趣的转化为细胞膜、蛋白质和细胞外代谢物。这些刺激调节的通常粒子和框架目前在许多生物技术领域发挥作用。来自嗜极微生物的化合物通常在非标准条件下催化合成反应。这样的条件促进了积累、沉淀和变性,减少了大多数非极端催化剂的运动,通常是因为缺乏足够的水合作用。极亲性催化剂可以通过修饰,特别是通过更明显的表面电荷和扩大的亚原子运动对其表面进行水化。这些资产允许少数嗜极化合物在非流体天然溶剂的视线范围内工作,具有潜在的有价值的动力计划。
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引用次数: 0
Major Compatible Solutes and Structural Adaptation of Proteins in Extremophiles 极端微生物中主要相容溶质和蛋白质的结构适应
Pub Date : 1900-01-01 DOI: 10.4018/978-1-7998-9144-4.ch008
Hardik Shah, K. Panchal, Amish Panchal
Extremophiles are the most ancient microbes on the Earth and also a center of attraction for the scientific community for research because of their ability to adapt to extreme habitats. Compatible solutes are among those factors which enable these microorganisms to thrive in such extreme habitats. Under osmotic stress, the majority of extremophiles accumulate specific organic solutes such as amino acids, sugars, polyols, and their derivatives. In addition, proteins in extremophiles are found to be evolved by changing their amino acid composition to alter the hydrophobicity of its core and surface charge to maintain activity. This chapter encompasses a comprehensive study about the role of various compatible solutes in the endurance of microorganisms under extremophilic conditions, synthesis of compatible solutes, nature of extremophilic proteins, and their applications. Furthermore, an attempt has been made to cover various strategies adopted by the scientific community while pursuing research on compatible solutes.
极端微生物是地球上最古老的微生物,也是科学界研究的焦点,因为它们有适应极端栖息地的能力。相容的溶质是使这些微生物能够在如此极端的生境中茁壮成长的因素之一。在渗透胁迫下,大多数极端微生物积累特定的有机溶质,如氨基酸、糖、多元醇及其衍生物。此外,发现极端微生物中的蛋白质通过改变其氨基酸组成来改变其核心的疏水性和表面电荷来维持活性。这一章包含了关于各种相容溶质在极端条件下微生物耐力中的作用的综合研究,相容溶质的合成,嗜极蛋白质的性质及其应用。此外,还试图涵盖科学界在进行相容溶质研究时采用的各种策略。
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引用次数: 0
期刊
Physiology, Genomics, and Biotechnological Applications of Extremophiles
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