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https://www.readbyqxmd.com/read/28330085/bioprospecting-and-biotechnological-applications-of-fungal-laccase
#1
REVIEW
Pooja Upadhyay, Rahul Shrivastava, Pavan Kumar Agrawal
Laccase belongs to a small group of enzymes called the blue multicopper oxidases, having the potential ability of oxidation. It belongs to enzymes, which have innate properties of reactive radical production, but its utilization in many fields has been ignored because of its unavailability in the commercial field. There are diverse sources of laccase producing organisms like bacteria, fungi and plants. In fungi, laccase is present in Ascomycetes, Deuteromycetes, Basidiomycetes and is particularly abundant in many white-rot fungi that degrade lignin...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28321234/a-review-of-bioinformatics-tools-for-bio-prospecting-from-metagenomic-sequence-data
#2
REVIEW
Despoina D Roumpeka, R John Wallace, Frank Escalettes, Ian Fotheringham, Mick Watson
The microbiome can be defined as the community of microorganisms that live in a particular environment. Metagenomics is the practice of sequencing DNA from the genomes of all organisms present in a particular sample, and has become a common method for the study of microbiome population structure and function. Increasingly, researchers are finding novel genes encoded within metagenomes, many of which may be of interest to the biotechnology and pharmaceutical industries. However, such "bioprospecting" requires a suite of sophisticated bioinformatics tools to make sense of the data...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28314873/exploring-the-bioprospecting-and-biotechnological-potential-of-white-rot-and-anaerobic-neocallimastigomycota-fungi-peptidases-esterases-and-lignocellulolytic-enzymes
#3
REVIEW
Ronivaldo Rodrigues da Silva, Rafael Pedezzi, Tatiane Beltramini Souto
Fungi constitute an invaluable natural resource for scientific research, owing to their diversity; they offer a promising alternative for bioprospecting, thus contributing to biotechnological advances. For a long time, extensive information has been exploited and fungal products have been tested as a source of natural compounds. In this context, enzyme production remains a field of interest, since it offers an efficient alternative to the hazardous processes of chemical transformations. Owing to their vast biodiversity and peculiar biochemical characteristics, two fungal categories, white-rot and anaerobic Neocallimastigomycota, have gathered considerable attention for biotechnological applications...
March 17, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28279126/further-insight-into-the-bioactivity-of-the-freshwater-sponge-ochridaspongia-rotunda
#4
Aleksandra Talevska, Boris Pejin, Tanja Beric, Slavisa Stankovic
CONTEXT: Bioprospection has become a dynamic scientific field that explores novel possibilities for the implementation of natural products in medicine and pharmacy. Compared to marine species from all kingdoms, freshwater species have been highly neglected. OBJECTIVE: This work focuses on the screening of acetylcholinesterase inhibitory (AChE) and mutagenic activities of the acetone extract (obtained by maceration) of the freshwater sponge Ochridaspongia rotunda Arndt (Malawispongiidae) in vitro...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28278662/antimicrobial-activity-of-saponins-produced-by-two-novel-endophytic-fungi-from-panax-notoginseng
#5
Zhaoxia Jin, Lin Gao, Lin Zhang, Tianyi Liu, Fang Yu, Zongshen Zhang, Qiong Guo, Biying Wang
Endophytes in plants may be co-producer of the bioactive compounds of their hosts. We conducted a study to bioprospect for saponin-producing endophytic fungi from Panax notoginseng and evaluate the antimicrobial activity of saponins. Two novel fungal endophytes, Fusarium sp. PN8 and Aspergillus sp. PN17, were isolated from traditional Chinese medicinal herb P. notoginseng. After eight days of fermentation, the total saponins produced in the culture broth of PN8 and PN17 were 1.061 and 0.583 mg mL(-1), respectively...
February 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28273638/antimalarial-activity-and-safety-assessment-of-flueggea-virosa-leaves-and-its-major-constituent-with-special-emphasis-on-their-mode-of-action
#6
Shiv Vardan Singh, Ashan Manhas, Yogesh Kumar, Sonali Mishra, Karuna Shanker, Feroz Khan, Kumkum Srivastava, Anirban Pal
A clinical emergency stands due to the appearance of drug resistant Plasmodium strains necessitate novel and effective antimalarial chemotypes, where plants seem as the prime option, especially after the discovery of quinine and artemisinin. The present study was aimed towards bioprospecting leaves of Flueggea virosa for its antimalarial efficacy and active principles. Crude hydro-ethanolic extract along with solvent derived fractions were tested in vitro against Plasmodium falciparum CQ sensitive (3D7) and resistant (K1) strains, where all the fractions exhibited potential activity (IC50 values <10μg/mL) against both the strains...
March 5, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28272809/bioprospection-of-cold-adapted-yeasts-with-biotechnological-potential-from-antarctica
#7
María Martha Martorell, Lucas Adolfo Mauro Ruberto, Pablo Marcelo Fernández, Lucía Inés Castellanos de Figueroa, Walter Patricio Mac Cormack
The aim of this study was to investigate the ability to produce extracellular hydrolytic enzymes at low temperature of yeasts isolated from 25 de Mayo island, Antarctica, and to identify those exhibiting one or more of the evaluated enzymatic activities. A total of 105 yeast isolates were obtained from different samples and 66 were identified. They belonged to 12 basidiomycetous and four ascomycetous genera. Most of the isolates were ascribed to the genera Cryptococcus, Mrakia, Cystobasidium, Rhodotorula, Gueomyces, Phenoliferia, Leucosporidium, and Pichia...
March 8, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28254480/effects-of-dichloromethane-and-butanol-fractions-of-gochnatia-polymorpha-subsp-floccosum-in-maternal-reproductive-outcome-embryo-fetal-development-and-dna-integrity-in-mice
#8
Lucas Roberto Pessatto, Sarah Alves Auharek, Caroline Amélia Gonçalves, Natan de David, Antônio Carlos Duenhas Monreal, Cândida Aparecida Leite Kassuya, AndreiaAndréia Conceição Milan Brochado Antoniolli-Silva, Maria Élida Alves Stefanello, Rodrigo Juliano Oliveira
ETHNOPHARMACOLOGICAL RELEVANCE: Gochnatia polymorpha ssp. floccosa (Asteraceae) also known as ''Cambará'' is used as medicinal plant in Brazil to treat infections and inflammation. Previous studies showed that its ethanolic extract could be bioprospecting of a new anti-inflammatory phytotherapy for use during pregnancy. This work aimed to evaluate dichloromethane (DCM) and butanolic (BT) fractions from G. polymorpha on embryo-fetal development and DNA integrity in mice. MATERIALS AND METHODS: Female mice were treated with 50 and 20mg/kg of the DCM and BT fractions, respectively, during organogenesis and gestational period...
February 27, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28213548/effects-of-gelling-agent-and-extracellular-signaling-molecules-on-the-culturability-of-marine-bacteria
#9
Anita Mac Rygaard, Mariane Schmidt Thøgersen, Kristian Fog Nielsen, Lone Gram, Mikkel Bentzon-Tilia
Only 1 % of marine bacteria are currently culturable using standard laboratory procedures and this is a major obstacle for our understanding of the biology of marine microorganisms and for the discovery of novel microbial natural products. Therefore, the purpose of the present study was to investigate if improved cultivation conditions, including the use of an alternative gelling agent, and supplementation with signaling molecules, could improve the culturability of bacteria from seawater. Substituting agar with gellan gum improved viable counts 3 - 40-fold, depending on medium composition and incubation conditions, with a maximum of 6...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28202318/corrigendum-to-bioprospecting-of-microalgae-proper-extraction-followed-by-high-performance-liquid-chromatographic-high-resolution-mass-spectrometric-fingerprinting-as-key-tools-for-successful-metabolom-characterization-j-chromatogr-b-1015-1016-2016-22-23
#10
Milena Stranska-Zachariasova, Petr Kastanek, Zbynek Dzuman, Josep Rubert, Michal Godula, Jana Hajslova
No abstract text is available yet for this article.
February 12, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28191021/phylogenetic-tree-analysis-of-the-cold-hot-nature-of-traditional-chinese-marine-medicine-for-possible-anticancer-activity
#11
Xianjun Fu, Xuxia Song, Xuebo Li, Kah Keng Wong, Jiaoyang Li, Fengcong Zhang, Changyun Wang, Zhenguo Wang
Traditional Chinese Marine Medicine (TCMM) represents one of the medicinal resources for research and development of novel anticancer drugs. In this study, to investigate the presence of anticancer activity (AA) displayed by cold or hot nature of TCMM, we analyzed the association relationship and the distribution regularity of TCMMs with different nature (613 TCMMs originated from 1,091 species of marine organisms) via association rules mining and phylogenetic tree analysis. The screened association rules were collected from three taxonomy groups: (1) Bacteria superkingdom, Phaeophyceae class, Fucales order, Sargassaceae family, and Sargassum genus; (2) Viridiplantae kingdom, Streptophyta phylum, Malpighiales class, and Rhizophoraceae family; (3) Holothuroidea class, Aspidochirotida order, and Holothuria genus...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28168318/endophyte-bioprospecting-in-south-asian-medicinal-plants-an-attractive-resource-for-biopharmaceuticals
#12
REVIEW
Rabia Tanvir, Aqeel Javeed, Aamir Ghafoor Bajwa
From the last several years, there has been an increasing interest in plant-associated bacteria commonly referred to as endophytes that reside asymptomatically in the internal plant tissues. This interest peaked since the last two decades due to the recognition that endophytes within medicinal plants have the capability to mimic and produce the bioactive metabolites of the host plant. A number of medicinal plants have been used for centuries by the people of South Asia to cure various diseases and this has led to abundant usage experience...
March 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28164707/discovery-of-novel-antimicrobial-peptides-from-varanus-komodoensis-komodo-dragon-by-large-scale-analyses-and-de-novo-assisted-sequencing-using-electron-transfer-dissociation-mass-spectrometry
#13
Barney M Bishop, Melanie L Juba, Paul S Russo, Megan Devine, Stephanie M Barksdale, Shaylyn Scott, Robert Settlage, Pawel Michalak, Kajal Gupta, Kent Vliet, Joel M Schnur, Monique L van Hoek
Komodo dragons are the largest living lizards and are the apex predators in their environs. They endure numerous strains of pathogenic bacteria in their saliva and recover from wounds inflicted by other dragons, reflecting the inherent robustness of their innate immune defense. We have employed a custom bioprospecting approach combining partial de novo peptide sequencing with transcriptome assembly to identify cationic antimicrobial peptides from Komodo dragon plasma. Through these analyses, we identified 48 novel potential cationic antimicrobial peptides...
February 24, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28160134/bacterial-and-fungal-proteolytic-enzymes-production-catalysis-and-potential-applications
#14
REVIEW
Ronivaldo Rodrigues da Silva
Submerged and solid-state bioprocesses have been extensively explored worldwide and employed in a number of important studies dealing with microbial cultivation for the production of enzymes. The development of these production technologies has facilitated the generation of new enzyme-based products with applications in pharmaceuticals, food, bioactive peptides, and basic research studies, among others. The applicability of microorganisms in biotechnology is potentiated because of their various advantages, including large-scale production, short time of cultivation, and ease of handling...
February 3, 2017: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/28154939/a-practical-guide-to-recombineering-in-photorhabdus-and-xenorhabdus
#15
Jia Yin, Hailong Wang, Ruijuan Li, Vinothkannan Ravichandran, Xiaoying Bian, Aiying Li, Qiang Tu, A Francis Stewart, Jun Fu, Youming Zhang
Fluent genetic manipulation of prokaryote genomes is still limited to only a few commonly used hosts. Ideally the advanced technologies available for cloning into recombinant Escherichia coli should also be applicable in other prokaryotes. In particular, 'recombineering' is mediated by the lambda Red operon that permits fluent and precise engineering of the E. coli genome and associated recombinant DNA. The major limitation is that host-specific phage-derived recombination systems are also required in more distant species...
February 3, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28148982/bio-prospecting-laccases-in-the-bacterial-diversity-of-activated-sludge-from-pulp-and-paper-industry
#16
Vijaya Gupta, Neena Capalash, Naveen Gupta, Prince Sharma
Activated sludge is an artificial ecosystem known to harbor complex microbial communities. Bacterial diversity in activated sludge from pulp and paper industry was studied to bioprospect for laccase, the multicopper oxidase applicable in a large number of industries due to its ability to utilize a wide range of substrates. Bacterial diversity using 454 pyrosequencing and laccase diversity using degenerate primers specific to conserved copper binding domain of laccase like multicopper oxidase (LMCO) genes were investigated...
March 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/28129718/response-surface-methodology-a-non-conventional-statistical-tool-to-maximize-the-throughput-of-streptomyces-species-biomass-and-their-bioactive-metabolites
#17
Selvanathan Latha, Govindhan Sivaranjani, Dharumadurai Dhanasekaran
Among diverse actinobacteria, Streptomyces is a renowned ongoing source for the production of a large number of secondary metabolites, furnishing immeasurable pharmacological and biological activities. Hence, to meet the demand of new lead compounds for human and animal use, research is constantly targeting the bioprospecting of Streptomyces. Optimization of media components and physicochemical parameters is a plausible approach for the exploration of intensified production of novel as well as existing bioactive metabolites from various microbes, which is usually achieved by a range of classical techniques including one factor at a time (OFAT)...
January 27, 2017: Critical Reviews in Microbiology
https://www.readbyqxmd.com/read/28107573/diversity-and-bioprospecting-of-actinomycete-endophytes-from-the-medicinal-plants
#18
REVIEW
Nalini Monnanda Somaiah, Harishchandra Sripathy Prakash
The endophytic actinomycetes constitute one of the fascinating group of microorganisms associated with a wide range of plant species. The diversity of actinomycetes in plants and their tissue parts is a matter of debate as no consensus are derived between individual studies. Nevertheless, their diversity correlates with the occurrence in plant species harbored in unique regions of biologically diverse areas called 'hot spots'. Recent advances in the isolation techniques have facilitated the isolation of rare taxa from these environments...
January 20, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28094064/bioprospecting-of-antimicrobial-activity-of-extracts-of-endophytic-fungi-from-bauhinia-guianensis
#19
Eduardo A A Pinheiro, Jeferson R S Pina, André O Feitosa, Josiwander M Carvalho, Fábio C Borges, Patrícia S B Marinho, Andrey M R Marinho
Antibiotic resistance results in higher medical costs, prolonged hospital stays and increased mortality and is rising to dangerously high levels in all parts of the world. Therefore, this study aims to search for new antimicrobial agents through bioprospecting of extracts of endophytic fungi from Bauhinia guianensis, a typical Amazonian plant used in combating infections. Seventeen (17) fungi were isolated and as result the methanolic extract of the fungus Exserohilum rostratum showed good activity against the bacteria tested...
January 13, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28058469/fungal-endophytes-an-alternative-source-for-production-of-volatile-compounds-from-agarwood-oil-of-aquilaria-subintegra
#20
Sakon Monggoot, Siam Popluechai, Eleni Gentekaki, Patcharee Pripdeevech
Fungal endophytes are microorganisms that are well-known for producing a diverse array of secondary metabolites. Recent studies have uncovered the bioprospecting potential of several plant endophytic fungi. Here, we demonstrate the presence of highly bioactive fungal endophytic species in Aquilaria subintegra, a fragrant wood plant collected from Thailand. Thirty-three fungal endophytic strains were isolated and further identified to genus level based on morphological characteristics. These genera included Colletotrichum, Pestalotiopsis, Fusarium, Russula, Arthrinium, Diaporthe and Cladosporium...
January 5, 2017: Microbial Ecology
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