首页 > 最新文献

Microbial journal最新文献

英文 中文
Pharmacological Activities of Reishi (Ganoderma Lucidum): Potent Medicinal Mushroom 灵芝的药理活性:强效药用蘑菇
Pub Date : 2023-12-18 DOI: 10.59411/x0s16496
Fekede Meshesha
Medicinal mushroom, Ganoderma lucidum is a white rot mushroom used in medicinal properties and economic importance. It contains a wide variety of bioactive molecules, which have been proved to have several therapeutically properties to control various diseases and it has toxic effects on humans. However, broad spectrum of its pharmacological actions have been established which include immunomodulation, anticancer, ant diabetic, antioxidant, anti-inflammatory, antimicrobial properties and estrogenic activity. Therefore, in this review particular focus on assess the components of biologically active compounds, pharmacological activity, economical importance, and toxicity of Ganoderma lucidum medicinal mushroom. G. lucidum biological active compounds might be a valuable constituent for the treatment of sex-hormone related aging ailments such as osteoporosis. Various animal studies have been carried out on G. lucidum water and ethanol extracts and protective effects toward acute hepatitis in rat and mice have been reported. Immunomodulatory and anti-inflammatory activities of G. lucidum recommend potential application in the treatment of autoimmune disorder like rheumatoid arthritis Ganoderma lucidum has a significant result on the cardiovascular system, such as reduce blood cholesterol, triglyceride level and blood pressure. Benign prostatic hyperplasia (BPH) is one of the common widespread disease, symptoms are seen usually in older men age group. Ganoderma lucidum has a significant result on the cardiovascular system, such as reduce blood cholesterol, triglyceride level and blood pressure.
药用蘑菇灵芝是一种具有药用价值和经济价值的白腐蘑菇。它含有多种生物活性分子,已被证实具有多种治疗特性,可控制各种疾病,但对人体有毒性作用。不过,其广泛的药理作用已经得到证实,包括免疫调节、抗癌、抗糖尿病、抗氧化、抗炎、抗菌和雌激素活性。因此,本综述将重点评估灵芝药用蘑菇的生物活性化合物成分、药理活性、经济重要性和毒性。灵芝的生物活性化合物可能是治疗与性激素有关的衰老疾病(如骨质疏松症)的重要成分。已对金针菇的水和乙醇提取物进行了多项动物研究,并报道了其对大鼠和小鼠急性肝炎的保护作用。灵芝的免疫调节和抗炎活性可用于治疗类风湿性关节炎等自身免疫性疾病 灵芝对心血管系统有显著效果,如降低血液中的胆固醇、甘油三酯水平和血压。良性前列腺增生症(BPH)是一种常见的广泛性疾病,症状通常出现在老年男性群体中。灵芝对心血管系统有显著效果,如降低血液中的胆固醇、甘油三酯水平和血压。
{"title":"Pharmacological Activities of Reishi (Ganoderma Lucidum): Potent Medicinal Mushroom","authors":"Fekede Meshesha","doi":"10.59411/x0s16496","DOIUrl":"https://doi.org/10.59411/x0s16496","url":null,"abstract":"Medicinal mushroom, Ganoderma lucidum is a white rot mushroom used in medicinal properties and economic importance. It contains a wide variety of bioactive molecules, which have been proved to have several therapeutically properties to control various diseases and it has toxic effects on humans. However, broad spectrum of its pharmacological actions have been established which include immunomodulation, anticancer, ant diabetic, antioxidant, anti-inflammatory, antimicrobial properties and estrogenic activity. Therefore, in this review particular focus on assess the components of biologically active compounds, pharmacological activity, economical importance, and toxicity of Ganoderma lucidum medicinal mushroom. G. lucidum biological active compounds might be a valuable constituent for the treatment of sex-hormone related aging ailments such as osteoporosis. Various animal studies have been carried out on G. lucidum water and ethanol extracts and protective effects toward acute hepatitis in rat and mice have been reported. Immunomodulatory and anti-inflammatory activities of G. lucidum recommend potential application in the treatment of autoimmune disorder like rheumatoid arthritis Ganoderma lucidum has a significant result on the cardiovascular system, such as reduce blood cholesterol, triglyceride level and blood pressure. Benign prostatic hyperplasia (BPH) is one of the common widespread disease, symptoms are seen usually in older men age group. Ganoderma lucidum has a significant result on the cardiovascular system, such as reduce blood cholesterol, triglyceride level and blood pressure.","PeriodicalId":508065,"journal":{"name":"Microbial journal","volume":"434 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139172722","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
Bio-Ethanol Production from Wheat Straw Using Yeast Isolates 利用酵母菌从小麦秸秆中生产生物乙醇
Pub Date : 2023-12-18 DOI: 10.59411/jhp3pb09
Mesfin Wondaferew, Asmamaw Tesfaw
In the first hand, the cost of fossil fuel is increasing alarmingly. On the second hand, combustion of fossil fuels contributes for global warming. Therefore, it need to strength the production of renewable energies. The aim of this study was to produce bioethanol from wheat straw using yeast isolates. The isolates were isolated from decomposed soil, termite soil and rotten wood samples using yeast extract peptone dextrose media (YPD) and characterized chemically and morphologically. The wheat straws were powdered and hydrolyzed with dilute sulfuric acids. After neutralization, it was used to produce ethanol. Response surface methodology was employed to optimize the ethanol production process from wheat straws. The isolates were grown optimally at a temperature of 30oC, pH nearly 5, and sugar concentration 70 to 120 g/L.  Among hydrolysis conditions, lower acid concentration (less than 1.5%) and temperature of 60oC resulted higher reducing sugars. The optimization study showed that the highest bio-ethanol concentration of 6.8g/l was observed by SWX under the optimum conditions of with 1% H2S04, 60oC temperature and 52.5-minute time hydrolysis at 30°C for 48 hour incubation time. Wheat straws could be good candidate for ethanol production.
首先,化石燃料的成本正在以惊人的速度增长。另一方面,化石燃料的燃烧会导致全球变暖。因此,需要加强可再生能源的生产。本研究的目的是利用酵母分离物从小麦秸秆中生产生物乙醇。使用酵母提取物蛋白胨葡萄糖培养基(YPD)从腐烂土壤、白蚁土壤和腐木样本中分离出酵母菌,并对其进行了化学和形态学鉴定。小麦秸秆被制成粉末并用稀硫酸水解。中和后用于生产乙醇。采用响应面方法对小麦秸秆乙醇生产过程进行了优化。在温度为 30oC、pH 值接近 5、糖浓度为 70 至 120 克/升的条件下,分离菌得到了最佳生长。 在水解条件中,较低的酸浓度(小于 1.5%)和 60oC 的温度可产生较高的还原糖。优化研究表明,在 1%H2S04、60oC 温度和 52.5 分钟水解时间(30°C,培养 48 小时)的最佳条件下,SWX 的生物乙醇浓度最高,为 6.8 克/升。小麦秸秆是生产乙醇的理想原料。
{"title":"Bio-Ethanol Production from Wheat Straw Using Yeast Isolates","authors":"Mesfin Wondaferew, Asmamaw Tesfaw","doi":"10.59411/jhp3pb09","DOIUrl":"https://doi.org/10.59411/jhp3pb09","url":null,"abstract":"In the first hand, the cost of fossil fuel is increasing alarmingly. On the second hand, combustion of fossil fuels contributes for global warming. Therefore, it need to strength the production of renewable energies. The aim of this study was to produce bioethanol from wheat straw using yeast isolates. The isolates were isolated from decomposed soil, termite soil and rotten wood samples using yeast extract peptone dextrose media (YPD) and characterized chemically and morphologically. The wheat straws were powdered and hydrolyzed with dilute sulfuric acids. After neutralization, it was used to produce ethanol. Response surface methodology was employed to optimize the ethanol production process from wheat straws. The isolates were grown optimally at a temperature of 30oC, pH nearly 5, and sugar concentration 70 to 120 g/L.  Among hydrolysis conditions, lower acid concentration (less than 1.5%) and temperature of 60oC resulted higher reducing sugars. The optimization study showed that the highest bio-ethanol concentration of 6.8g/l was observed by SWX under the optimum conditions of with 1% H2S04, 60oC temperature and 52.5-minute time hydrolysis at 30°C for 48 hour incubation time. Wheat straws could be good candidate for ethanol production.","PeriodicalId":508065,"journal":{"name":"Microbial journal","volume":"49 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139174123","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
Status in Malaria Vaccine Development: Basic aspects of Vaccinology mechanism of actions, vaccine pipelines, stage oriented immune response ‘Challenges and Opportunities’ 疟疾疫苗开发现状:疫苗学作用机制的基本方面、疫苗管线、阶段性免疫反应 "挑战与机遇
Pub Date : 2023-11-18 DOI: 10.59411/990get50
Solomon Taddese
Malaria is considered as a systemic syndrome caused by infection of the red blood cells by intracellular protozoan parasites of the genus Plasmodium and is transmitted by the bite of infected and physiologically excited female anopheline mosquito, which feeds on mamamalian blood to produce and mature its eggs. Vaccination is  believed to be one of the most effective approaches to tackle morbidity and mortality  related  malaria and its approach targets the malaria life stage  factors like the pre-erythrocyticproteins (RTSs, ChAd63/MVA, METRAP, PSPZ, PfceITos…), the blood stage proteins (EBA175, AMA1, GMZ1, P27A, MSP3, MSP1, RH5, sexual stage proteins ( Pfs25, Pfs48, Pfs230 and Multi-stage /multi-epitope/antigen combination vaccines ((PfCP-2. 9 chimeric (AMA1 and MSP1–19)). Even if the vaccine trials against malaria was began early in 1930s, currently the one most advanced pre-erythrocyticvaccine, RTS, S vaccine has been launched with good safety profile ( efficacy of 30-50%). New approaches like combining different types of adjuvants into antigen‐specific formulations improved efficacy of a particular vaccine and its formulations offer a wide spectrum of opportunities in malaria vaccine research. Frequent and multiple infections gradually lead to the development of anti-parasite immunity which results in very low or undetectable parasitemia in malaria-infected individuals. Sterilizing immunity against malarial parasite, though never fully achieved, results in a high degree of immune response, low levels of parasitemia, and an asymptomatic carrier status For unsuccessful trials of malaria vaccine, there are so many challenges that are associated to logistic (high cost-effective public health intervention to control and regulate pathway complicity ), immunologic (polymorphism of the malaria parasite antigens in each life stage, the immune evasion strategy of the parasite… ), and technical challenges related to miss identification of malaria vaccine candidates, selection adjuvants and route of administration. Although there were tackles to malarial vaccine trials, it was reported that there are fine opportunities to proceed on the track
疟疾被认为是由疟原虫属细胞内原生动物感染红血球引起的一种全身性综合症,由受感染和生理兴奋的雌性疟蚊叮咬传播,疟蚊吸食疟原虫的血液,产卵并使其成熟。疫苗接种被认为是解决与疟疾有关的发病率和死亡率的最有效方法之一,其方法针对疟疾生命阶段因子,如红细胞前蛋白(RTSs、ChAd63/MVA、METRAP、PSPZ、PfceITos......)、血液阶段蛋白(EBA175、AMA1、GMZ1、P27A、MSP3、MSP1、RH5)、性阶段蛋白(Pfs25、Pfs48、Pfs230 和多阶段/多表位/抗原组合疫苗(PfCP-2.9 嵌合体(AMA1 和 MSP1-19))。尽管疟疾疫苗试验早在 20 世纪 30 年代就已开始,但目前最先进的前红细胞疫苗 RTS S 疫苗已经上市,并具有良好的安全性(有效率为 30-50%)。将不同类型的佐剂结合到抗原特异性制剂中等新方法提高了特定疫苗及其制剂的效力,为疟疾疫苗研究提供了广泛的机会。频繁和多次感染会逐渐产生抗寄生虫免疫力,从而导致疟疾感染者体内的寄生虫血症非常低或检测不到。对疟原虫的绝育免疫虽然从未完全实现,但会产生高度的免疫反应、低水平的寄生虫血症和无症状的带菌者状态。 对于疟疾疫苗的不成功试验,有许多挑战与后勤(控制和调节途径并发症的高成本效益公共卫生干预)、免疫学(疟原虫抗原在每个生命阶段的多态性、寄生虫的免疫逃避策略......)和技术挑战有关。),以及与疟疾疫苗候选物的失误鉴定、佐剂选择和给药途径有关的技术挑战。尽管疟原虫疫苗试验遇到了一些问题,但据报告,在这一轨道上仍有良好的发展机会
{"title":"Status in Malaria Vaccine Development: Basic aspects of Vaccinology mechanism of actions, vaccine pipelines, stage oriented immune response ‘Challenges and Opportunities’","authors":"Solomon Taddese","doi":"10.59411/990get50","DOIUrl":"https://doi.org/10.59411/990get50","url":null,"abstract":"Malaria is considered as a systemic syndrome caused by infection of the red blood cells by intracellular protozoan parasites of the genus Plasmodium and is transmitted by the bite of infected and physiologically excited female anopheline mosquito, which feeds on mamamalian blood to produce and mature its eggs. Vaccination is  believed to be one of the most effective approaches to tackle morbidity and mortality  related  malaria and its approach targets the malaria life stage  factors like the pre-erythrocyticproteins (RTSs, ChAd63/MVA, METRAP, PSPZ, PfceITos…), the blood stage proteins (EBA175, AMA1, GMZ1, P27A, MSP3, MSP1, RH5, sexual stage proteins ( Pfs25, Pfs48, Pfs230 and Multi-stage /multi-epitope/antigen combination vaccines ((PfCP-2. 9 chimeric (AMA1 and MSP1–19)). Even if the vaccine trials against malaria was began early in 1930s, currently the one most advanced pre-erythrocyticvaccine, RTS, S vaccine has been launched with good safety profile ( efficacy of 30-50%). New approaches like combining different types of adjuvants into antigen‐specific formulations improved efficacy of a particular vaccine and its formulations offer a wide spectrum of opportunities in malaria vaccine research. Frequent and multiple infections gradually lead to the development of anti-parasite immunity which results in very low or undetectable parasitemia in malaria-infected individuals. Sterilizing immunity against malarial parasite, though never fully achieved, results in a high degree of immune response, low levels of parasitemia, and an asymptomatic carrier status For unsuccessful trials of malaria vaccine, there are so many challenges that are associated to logistic (high cost-effective public health intervention to control and regulate pathway complicity ), immunologic (polymorphism of the malaria parasite antigens in each life stage, the immune evasion strategy of the parasite… ), and technical challenges related to miss identification of malaria vaccine candidates, selection adjuvants and route of administration. Although there were tackles to malarial vaccine trials, it was reported that there are fine opportunities to proceed on the track","PeriodicalId":508065,"journal":{"name":"Microbial journal","volume":"1 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139261028","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
Microbial induced nitrogen recycling in bio-geochemical decomposition sites 生物地球化学分解场中的微生物诱导氮再循环
Pub Date : 2023-11-18 DOI: 10.59411/h90hxs51
Adrian John
Context: The sporadic introduction of deceased plant and animal matter into soils is pivotal in reincorporating organic carbon (C) and nitrogen (N) compounds into biogeochemical cycles. The breakdown of animal remains offers a rich reservoir of C and N, stimulating both local environmental microbial communities and introducing external microbes stemming from the carcasses. Nonetheless, the interactions within these blended microbial communities and the respective impacts of environment- and carcass-originating microbes on C and N cycling remain uncertain. To determine whether environment-derived, carcass-derived, or the merged microbial communities exerted a greater influence on C and N cycling, we conducted controlled laboratory experiments mimicking carcass decomposition hotspots by combining carcass decomposition fluids with soils. We selectively sterilized the decomposition fluid and/or soil to remove microbial communities, creating distinct combinations of environment- and carcass-derived communities, and incubated the treatments at three temperatures (around 15, 25, and 35 °C). Findings: Carcass-sourced bacteria persisted in soils in our simulated decomposition scenarios, albeit in modest quantities. Hybrid communities demonstrated increased respiration rates at around 15 and 35 °C compared to singular soil or carcass communities. Interestingly, at higher temperatures, mixed communities exhibited reduced diversity but higher respiration, suggesting functional overlap. Additionally, mixed community treatments furnished evidence that microbes linked with carcasses might play a role in ammonification and denitrification, while nitrification was mainly carried out by indigenous soil organisms. Conclusions: Our investigation yields valuable insights into the dynamics of microbial communities converging during carcass decomposition and their functions in the recycling of carcasses within terrestrial ecosystems.
背景:零星的动植物尸体进入土壤,对于将有机碳(C)和氮(N)化合物重新纳入生物地球化学循环至关重要。动物遗骸的分解提供了一个丰富的碳和氮库,既能刺激当地环境微生物群落,又能从尸体中引入外部微生物。然而,这些混合微生物群落内部的相互作用以及环境微生物和来自尸体的微生物各自对碳和氮循环的影响仍不确定。为了确定是环境源微生物群落、尸体源微生物群落还是混合微生物群落对碳和氮循环的影响更大,我们将尸体分解液与土壤结合起来,进行了模拟尸体分解热点的实验室对照实验。我们对分解液和/或土壤进行了选择性消毒,以去除微生物群落,从而创造出不同的环境和尸体衍生群落组合,并在三种温度下(约 15、25 和 35 °C)培养处理。研究结果在我们模拟的分解情景中,源自尸体的细菌在土壤中持续存在,尽管数量不多。与单一的土壤或尸体群落相比,混合群落在 15 和 35 °C左右时的呼吸速率有所提高。有趣的是,在温度较高的情况下,混合群落的多样性降低,但呼吸速率提高,这表明存在功能重叠。此外,混合群落处理提供的证据表明,与尸体有关的微生物可能在氨化和反硝化作用中发挥作用,而硝化作用主要由本地土壤生物进行。结论我们的研究为了解尸体分解过程中微生物群落的动态及其在陆地生态系统中尸体循环过程中的功能提供了宝贵的见解。
{"title":"Microbial induced nitrogen recycling in bio-geochemical decomposition sites","authors":"Adrian John","doi":"10.59411/h90hxs51","DOIUrl":"https://doi.org/10.59411/h90hxs51","url":null,"abstract":"Context: The sporadic introduction of deceased plant and animal matter into soils is pivotal in reincorporating organic carbon (C) and nitrogen (N) compounds into biogeochemical cycles. The breakdown of animal remains offers a rich reservoir of C and N, stimulating both local environmental microbial communities and introducing external microbes stemming from the carcasses. Nonetheless, the interactions within these blended microbial communities and the respective impacts of environment- and carcass-originating microbes on C and N cycling remain uncertain. To determine whether environment-derived, carcass-derived, or the merged microbial communities exerted a greater influence on C and N cycling, we conducted controlled laboratory experiments mimicking carcass decomposition hotspots by combining carcass decomposition fluids with soils. We selectively sterilized the decomposition fluid and/or soil to remove microbial communities, creating distinct combinations of environment- and carcass-derived communities, and incubated the treatments at three temperatures (around 15, 25, and 35 °C). Findings: Carcass-sourced bacteria persisted in soils in our simulated decomposition scenarios, albeit in modest quantities. Hybrid communities demonstrated increased respiration rates at around 15 and 35 °C compared to singular soil or carcass communities. Interestingly, at higher temperatures, mixed communities exhibited reduced diversity but higher respiration, suggesting functional overlap. Additionally, mixed community treatments furnished evidence that microbes linked with carcasses might play a role in ammonification and denitrification, while nitrification was mainly carried out by indigenous soil organisms. Conclusions: Our investigation yields valuable insights into the dynamics of microbial communities converging during carcass decomposition and their functions in the recycling of carcasses within terrestrial ecosystems.","PeriodicalId":508065,"journal":{"name":"Microbial journal","volume":"208 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139262046","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
Microbial dynamics in Manaus river, Brazil 巴西玛瑙斯河的微生物动态
Pub Date : 2023-11-18 DOI: 10.59411/fwas7t80
Ricardo Lucas
Rivers, which are vital ecosystems that support a variety of life forms and provide many ecosystem services, have been degraded by human activities, such as urbanization, pollution, and overexploitation. Habitat restoration projects have been implemented in different parts of the world to restore the ecological health and functioning of degraded rivers. The microbial community that forms biofilms on various substrates is one of the key components of river ecosystems. Organic matter is decomposed and carbon dioxide is produced by these biofilms, which affects the oxygen levels and nutrient cycles in the water. However, the effects of habitat restoration on the biofilm microbial community are not well understood. High-throughput DNA sequencing was used in this study to compare the bacterial composition of biofilms in three types of rivers: degraded urban rivers, urban rivers with restored habitats, and forested rivers that serve as reference conditions. The following questions were aimed to be answered: (i) How is the biofilm bacterial community composition affected by habitat restoration? (ii) How does bacterial diversity change in restored rivers compared to degraded and reference rivers? (iii) What are the environmental factors that influence the biofilm bacterial community composition? It was found that water quality was improved by habitat restoration by increasing the dissolved oxygen and reducing the organic pollutants in urban rivers. A decrease in bacterial diversity and a shift in the biofilm bacterial community structure towards that of the reference forested rivers were accompanied by this. This suggests that the biofilm microbial community can be altered by habitat restoration and its role in processing organic pollutants can be enhanced. However, it was also found that there was still a significant difference in the biofilm bacterial community between the restored and reference rivers, indicating that more time and effort are needed to achieve a similar ecological quality as the natural forested rivers.
河流是支持多种生命形式并提供多种生态系统服务的重要生态系统,但由于城市化、污染和过度开发等人类活动,河流已经退化。为了恢复退化河流的生态健康和功能,世界各地都实施了生境恢复项目。在各种基质上形成生物膜的微生物群落是河流生态系统的重要组成部分之一。这些生物膜分解有机物并产生二氧化碳,从而影响水中的氧气含量和营养循环。然而,人们对生境恢复对生物膜微生物群落的影响还不甚了解。本研究利用高通量 DNA 测序技术比较了三种类型河流中生物膜的细菌组成:退化的城市河流、生境恢复后的城市河流以及作为参考条件的森林河流。旨在回答以下问题:(i) 生境恢复对生物膜细菌群落组成有何影响?(ii) 与退化河流和参照河流相比,修复河流的细菌多样性有何变化?(iii) 影响生物膜细菌群落组成的环境因素有哪些?研究发现,生境恢复通过增加溶解氧和减少城市河流中的有机污染物改善了水质。随之而来的是细菌多样性的减少和生物膜细菌群落结构向参照森林河流的转变。这表明,生物膜微生物群落可以通过生境恢复而改变,其处理有机污染物的作用也可以增强。不过,研究也发现,修复后的河流与参照河流的生物膜细菌群落仍存在显著差异,这表明要达到与天然森林河流相似的生态质量,还需要更多的时间和努力。
{"title":"Microbial dynamics in Manaus river, Brazil","authors":"Ricardo Lucas","doi":"10.59411/fwas7t80","DOIUrl":"https://doi.org/10.59411/fwas7t80","url":null,"abstract":"Rivers, which are vital ecosystems that support a variety of life forms and provide many ecosystem services, have been degraded by human activities, such as urbanization, pollution, and overexploitation. Habitat restoration projects have been implemented in different parts of the world to restore the ecological health and functioning of degraded rivers. The microbial community that forms biofilms on various substrates is one of the key components of river ecosystems. Organic matter is decomposed and carbon dioxide is produced by these biofilms, which affects the oxygen levels and nutrient cycles in the water. However, the effects of habitat restoration on the biofilm microbial community are not well understood. High-throughput DNA sequencing was used in this study to compare the bacterial composition of biofilms in three types of rivers: degraded urban rivers, urban rivers with restored habitats, and forested rivers that serve as reference conditions. The following questions were aimed to be answered: (i) How is the biofilm bacterial community composition affected by habitat restoration? (ii) How does bacterial diversity change in restored rivers compared to degraded and reference rivers? (iii) What are the environmental factors that influence the biofilm bacterial community composition? It was found that water quality was improved by habitat restoration by increasing the dissolved oxygen and reducing the organic pollutants in urban rivers. A decrease in bacterial diversity and a shift in the biofilm bacterial community structure towards that of the reference forested rivers were accompanied by this. This suggests that the biofilm microbial community can be altered by habitat restoration and its role in processing organic pollutants can be enhanced. However, it was also found that there was still a significant difference in the biofilm bacterial community between the restored and reference rivers, indicating that more time and effort are needed to achieve a similar ecological quality as the natural forested rivers.","PeriodicalId":508065,"journal":{"name":"Microbial journal","volume":"121 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139262213","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
期刊
Microbial journal
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1