Article
Microbiology
Shabiha Nudrat Hazarika, Kangkon Saikia, Atlanta Borah, Debajit Thakur
Summary: This study focused on isolating and characterizing beneficial endophytic bacteria (EnB) in commercially important tea clones in North Eastern India. The findings highlighted the potential of EnB as plant growth promoters, particularly in traits such as plant growth promotion characteristics and biofilm formation. Research on two major bacteria, Stenotrophomonas sp. and Pseudomonas sp., showed that they were able to effectively promote plant growth in commercial tea clones under nursery conditions.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Plant Sciences
Shabiha Nudrat Hazarika, Kangkon Saikia, Debajit Thakur
Summary: In this study, 88 endophytic actinobacteria associated with five tea clones were isolated and evaluated for their diversity, plant growth promoting, and biocontrol traits. Among them, 35 isolates showed antagonistic activity against major fungal pathogens. Additionally, the study found that two Streptomyces strains could form biofilms and significantly enhance plant growth. The results demonstrate that tea endophytic actinobacterial strains have the potential to enhance plant growth and suppress fungal pathogens.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
G. Cazaudehore, R. Guyoneaud, A. Lallement, C. Gassie, F. Monlau
Summary: This study evaluated the influence of inoculum-substrate ratio (ISR) on the methane production of biodegradable plastics and found that an ISR between 2.85 and 4 is recommended for reproducible degradation kinetics and optimal methane production.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Rosana Oliveira Menezes, Tiago Palladino Delforno, Daniele Damasceno Silveira, Tijana Radojicic, Flavio Rubens Lapolli, Luana Mattos de Oliveira Cruz
Summary: The study confirmed the potential of three different types of reactors and active biomass to be used as inoculum for nitrogen removal. Results showed that MBR and MBBR samples had the highest microbial activity and abundance, with MBBR WWTP demonstrating the best conditions for nitrogen conversion and removal.
BIORESOURCE TECHNOLOGY
(2021)
Article
Food Science & Technology
Niki Mougiou, Antiopi Tsoureki, Spyros Didos, Ioanna Bouzouka, Sofia Michailidou, Anagnostis Argiriou
Summary: The analysis of table olives microbiome using next-generation sequencing has provided valuable information about the microbial community composition of this popular fermented food. This study used 16S and 18S rRNA sequencing to evaluate the microbial communities of table olives from five Greek popular cultivars, fermented by Greek or Spanish style. The results showed that different curing and fermentation methods had an impact on the microbial composition and biochemical properties of the olives.
Article
Biology
Daniel Min, Andrew C. Doxey, Josh D. Neufeld
Summary: AXIOME3 is a completely redeveloped pipeline for small subunit ribosomal RNA data analysis, with an interactive web interface that simplifies configuration processes and task status tracking. It uses an automated pipeline wrapped around QIIME2 to generate various outputs, including amplicon sequence variant tables, taxonomic classifications, phylogenetic trees, biodiversity metrics, and ordinations.
Article
Environmental Sciences
Aoyun Li, Yajing Wang, Yuanyuan He, Bingxian Liu, Mudassar Iqbal, Khalid Mehmood, Tariq Jamil, Yung-Fu Chang, Lianmei Hu, Ying Li, Jianying Guo, Jiaqiang Pan, Zhaoxin Tang, Hui Zhang
Summary: Fluorine and its compounds from industrial production and coal combustion can cause contamination of air, water, and soil, posing a threat to public health through accumulation in animals, plants, and humans via food chain. Exposure to fluoride resulted in damaged intestinal structure and altered gut microbial composition in ducks.
Article
Agricultural Engineering
Yanjie Wei, Yuanyao Ye, Min Ji, Shitao Peng, Feifei Qin, Wenshan Guo, Huu Hao Ngo
Summary: This study utilized aerobic granular sludge technology to remove ammonium from landfill leachate, analyzing the stability of microbial community structures using PCR-DGGE technology. It was found that high nitrogen loading rates hindered ammonium removal, while low loading rates achieved satisfactory results, indicating the importance of stable wastewater treatment bioreactors in maintaining microbial community stability.
BIORESOURCE TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Tiago de Oliveira Santos, Felipe Jose Cury Fracetto, Valdomiro Severino de Souza Junior, Jose Coelho de Araujo Filho, Mario Andrade Lira Junior, Jose Petronio Mendes Junior, Marcos Siqueira Neto, Yure Romero Oliveira da Silva, Felipe Martins do Rego Barros, Giselle Gomes Monteiro Fracetto
Summary: Overexploitation of natural forest resources in the tropical semiarid region of Brazil leads to soil degradation, reduction in microbial and plant biomass, and loss of C and N from soils. This study found that degraded soils had significantly lower C and N stocks, abundance and activity of total bacteria and fungi, and decreased abundance of diazotrophic and phosphorus-mineralizing bacteria compared to preserved or partially degraded soils. However, the abundance of total bacteria and fungi genes and glomalin content remained unchanged. The alkaline phosphatase activity indicated that mineralizing microorganisms can still make phosphorus constantly available in soils without vegetation cover.
Review
Microbiology
Areej A. Alhhazmi, Renad M. Alhamawi, Reema M. Almisned, Hanouf A. Almutairi, Ahdab A. Jan, Shahad M. Kurdi, Yahya A. Almutawif, Waleed Mohammed-Saeid
Summary: Globally, colorectal cancer (CRC) is the second leading cause of death. Dysbiosis of the gut microbial community and its metabolite secretions are strongly associated with the development and progression of advanced adenoma (ADA) and CRC. This systematic review identifies microbial markers and proposes their use for diagnosing ADA and/or CRC, while suggesting the need for further research to evaluate the potential use of metabolite markers as diagnostic or prognostic markers for colorectal cancer.
Article
Plant Sciences
Chakrit Bunyoo, Peerapat Roongsattham, Sirikorn Khumwan, Juthaporn Phonmakham, Passorn Wonnapinij, Arinthip Thamchaipenet
Summary: This study investigated the structure and diversity of duckweed-associated bacteria (DAB) among four duckweed subtypes under natural and nutrient-deficient conditions using 16S rRNA amplicon sequencing. The results showed that Proteobacteria was the dominant phylum in duckweed samples. A total of 24 microbial genera were identified as a core microbiome, with consistent proportions across all duckweed subtypes. The diversity of microbial communities decreased after nutrient-deficient stress, but the relative abundance of certain genera significantly increased. Functional prediction of the metagenome data revealed enrichment of essential pathways involved in DAB colonization and biodegradation under stress condition.
Article
Environmental Sciences
Rehab K. Alhajjar, Ryan B. Ghannam, Jeremy R. Chen See, Olivia G. Wright, Maria Fernanda Campa, Terry C. Hazen, Regina Lamendella, Stephen M. Techtmann
Summary: The study investigated the impact of biocides and nanoparticles on microbial diversity in a hydraulic fracturing impacted stream. The results showed that different types of nanoparticles led to a decrease in bacterial abundance, while biocide-amended treatments saw an increase in microbial abundance. Differentially enriched taxa were observed in biocide and nanoparticle treatments compared to controls, indicating that nanoparticles slightly altered the microbial community composition. The study suggests the potential use of nanoparticles as an alternative to biocides in certain settings.
Article
Agriculture, Dairy & Animal Science
Jiaojiao Xu, Jiadi Liang, Wenjun Chen, Xin Wen, Na Zhang, Baohua Ma, Yongde Zou, Jiandui Mi, Yan Wang, Xindi Liao, Yinbao Wu
Summary: In this study, the effect of therapeutic doxycycline on the pig intestinal bacterial community was examined. It was found that doxycycline did not affect the diversity of the microbial community structure, but it did affect bacterial interactions and metabolic pathways. This study provides insight into the impact of doxycycline on the pig intestinal microbiota in pig breeding.
Article
Engineering, Environmental
Wang Qiongjie, Zhang Yong, Zhang Yangyang, Liu Zhouqi, Wang Jinxiaoxue, Chen Huijuan
Summary: This study found that biofilm can enhance the adsorption capacity of microplastics to copper and lead, while the influence of UV radiation is minimal. According to modeling analysis, adsorption on V-PS is dominated by intra-particle diffusion, while the adsorption rate on UV-PS and Bio-PS is mainly controlled by binding diffusion. Bio-PS has the strongest adsorption capacity and the adsorption mechanisms include physical adsorption, chemisorption, and biosorption.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Agronomy
Md. Humayun Kabir, Kridsada Unban, Pratthana Kodchasee, Rasiravathanahalli Kaveriyappan Govindarajan, Saisamorn Lumyong, Nakarin Suwannarach, Pairote Wongputtisin, Kalidas Shetty, Chartchai Khanongnuch
Summary: In this study, 70 bacterial isolates were obtained from healthy tea leaves samples from different tea gardens in Chiang Mai, Thailand. These isolates belonged to 11 different genera and showed plant growth-promoting abilities. Two bacterial strains were found to enhance seed germination and seedling growth in sunflower and tomato seeds.
Article
Microbiology
Jintu Dutta, Debajit Thakur
CURRENT MICROBIOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Devasish Chowdhury, Sristi Majumdar, Debajit Thakur
APPLIED NANOSCIENCE
(2020)
Article
Biotechnology & Applied Microbiology
Anupam Bhattacharya, Simang Champramary, Tanya Tripathi, Debajit Thakur, Ilya Ioshikhes, Satyendra Kumar Singh, Soumyadeep Nandi
Summary: With a novel approach, this study identified conserved lncRNAs in myogenesis in humans and mice, and functionally annotated them by correlating gene expression in topologically associated domains. The method identified a large number of lncRNAs involved in myogenesis and can be used to identify novel conserved lncRNAs across different species. Further research is needed to understand the conservation of lncRNAs in human and mouse despite dissimilar sequences.
Article
Microbiology
Jintu Dutta, Debajit Thakur
Summary: This study investigated the antagonistic potential and diversity of rhizosphere soil bacteria from commercial tea estates in Assam, India. A total of 217 rhizobacteria were isolated, with 50 showing potential antagonistic activity against fungal pathogens. Twelve isolates exhibited extracellular chitinase activity and presence of chitinase genes, particularly ChiA and ChiA74 gene. These antagonistic bacterial isolates predominantly belonged to the genus Bacillus, demonstrating potential for sustainable agricultural and industrial applications.
Article
Microbiology
Shabiha Nudrat Hazarika, Kangkon Saikia, Atlanta Borah, Debajit Thakur
Summary: This study focused on isolating and characterizing beneficial endophytic bacteria (EnB) in commercially important tea clones in North Eastern India. The findings highlighted the potential of EnB as plant growth promoters, particularly in traits such as plant growth promotion characteristics and biofilm formation. Research on two major bacteria, Stenotrophomonas sp. and Pseudomonas sp., showed that they were able to effectively promote plant growth in commercial tea clones under nursery conditions.
FRONTIERS IN MICROBIOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Atlanta Borah, Shabiha Nudrat Hazarika, Debajit Thakur
Summary: Tea plants are vulnerable to various biotic and abiotic stresses, with beneficial actinobacteria potentially playing a role in promoting plant growth and defense. The bioactive metabolites of actinobacteria have significant value in agricultural economy.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Review
Microbiology
Aditya Narayan Konwar, Shabiha Nudrat Hazarika, Pranami Bharadwaj, Debajit Thakur
Summary: An increasing number of bacteria are becoming resistant to antibiotics, posing a global threat that has raised awareness among the general public and clinicians. The delay in discovering new antibiotics has led researchers to explore unconventional antimicrobial treatments. Recent alternative therapies, including antimicrobial peptides and phage therapy, have shown promising results in lab and clinical trials. Combinatorial therapies have also been approved for clinical use, accelerating the discovery of novel combination approaches.
CURRENT MICROBIOLOGY
(2022)
Article
Plant Sciences
Bhaswati Kashyap, Kangkon Saikia, Suman Kumar Samanta, Debajit Thakur, Sanjay Kumar Banerjee, Jagat Chandra Borah, Narayan Chandra Talukdar
Summary: The study aims to scientifically validate the traditional use of Antidesma acidum in treating diabetes and determine the effect of its leaf extract and bioactive compounds on glucose metabolism and insulin signaling. The active component Kaempferol 3-O-rutinoside was identified for the first time in the leaf of Antidesma acidum, which showed potential in improving insulin sensitization through SIRT1 activation.
JOURNAL OF ETHNOPHARMACOLOGY
(2023)
Article
Plant Sciences
Shabiha Nudrat Hazarika, Kangkon Saikia, Debajit Thakur
Summary: In this study, 88 endophytic actinobacteria associated with five tea clones were isolated and evaluated for their diversity, plant growth promoting, and biocontrol traits. Among them, 35 isolates showed antagonistic activity against major fungal pathogens. Additionally, the study found that two Streptomyces strains could form biofilms and significantly enhance plant growth. The results demonstrate that tea endophytic actinobacterial strains have the potential to enhance plant growth and suppress fungal pathogens.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Juri Saikia, Rajkumari Mazumdar, Debajit Thakur
Summary: This study investigated the cultivable endophytic actinobacteria associated with ten epiphytic orchid species in Assam, India. The isolates showed plant growth promotion (PGP) characteristics and antifungal activity, making them potential alternatives to chemical fertilizers and pesticides in agriculture.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Microbiology
Rajkumari Mazumdar, Partha Pratim Dutta, Juri Saikia, Jagat Chandra Borah, Debajit Thakur
Summary: The Actinomycetia isolate PBR11, identified as Streptomyces sp., was isolated from forest rhizosphere soil in Assam, India. It showed significant antimicrobial efficacy against various pathogens, including multidrug-resistant isolates. Metabolic profiling revealed the presence of antimicrobial compounds, including the antituberculosis drug ethambutol. This study highlights the potential of unexplored natural habitats for the discovery of novel antibiotics.
MICROBIOLOGY SPECTRUM
(2023)
Article
Plant Sciences
Shalini Gurumayum, Simanta Bharadwaj, Yunus Sheikh, Sagar R. Barge, Kangkon Saikia, Deepsikha Swargiary, Semim Akhtar Ahmed, Debajit Thakur, Jagat C. Borah
Summary: This study evaluates the potential of Osbeckia nepalensis in treating type 2 diabetes mellitus. The results show that the extract of O. nepalensis increases glucose uptake, inhibits gluconeogenic enzymes, and downregulates transcription factors through AMPK phosphorylation in hepatocytes. In vivo experiments also demonstrate its effectiveness in reducing blood glucose levels.
JOURNAL OF ETHNOPHARMACOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Aditya Narayan Konwar, Surajit Basak, Shalini Gurumayum Devi, Jagat Chandra Borah, Debajit Thakur
Summary: The Actinomycetia isolate, MNP32, was identified as Streptomyces sp. and showed 99.86% similarity to Streptomyces camponoticapitis through molecular characterization. MNP32 exhibited broad-spectrum antimicrobial activity against bacterial human pathogens, including critical priority pathogens such as MRSA and Acinetobacter baumannii. The ethyl acetate extract of MNP32 disrupted the membrane of the test pathogens, and chemical analysis revealed the presence of compounds with antimicrobial activity.
Article
Nanoscience & Nanotechnology
Sristi Majumdar, Debajit Thakur, Devasish Chowdhury
ACS APPLIED BIO MATERIALS
(2020)
Article
Microbiology
Ananya Barman, Archana Nath, Debajit Thakur
MICROBIOLOGICAL RESEARCH
(2020)