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https://www.readbyqxmd.com/read/28330329/diversity-of-bacteria-and-archaea-in-the-rhizosphere-of-bioenergy-crop-jatropha-curcas
#1
Garima Dubey, Bharati Kollah, Vijay Kumar Gour, Arvind Kumar Shukla, Santosh Ranjan Mohanty
Plant-microbial interaction in rhizosphere plays vital role in shaping plant's growth and ecosystem function. Most of the rhizospheric microbial diversity studies are restricted to bacteria. In natural ecosystem, archaea also constitutes a major component of the microbial population. However, their diversity is less known compared to bacteria. Experiments were carried out to examine diversity of bacteria and archaea in the rhizosphere of bioenergy crop Jatropha curcas (J. curcas). Samples were collected from three locations varying widely in the soil physico-chemical properties...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330326/impact-assessment-of-silver-nanoparticles-on-plant-growth-and-soil-bacterial-diversity
#2
Pallavi, C M Mehta, Rashmi Srivastava, Sandeep Arora, A K Sharma
The present study was carried out to investigate the impact of silver nanoparticles (AgNPs) on the growth of three different crop species, wheat (Triticum aestivum, var. UP2338), cowpea (Vigna sinensis, var. Pusa Komal), and Brassica (Brassica juncea, var. Pusa Jai Kisan), along with their impact on the rhizospheric bacterial diversity. Three different concentrations (0, 50 and 75 ppm) of AgNPs were applied through foliar spray. After harvesting, shoot and root parameters were compared, and it was observed that wheat was relatively unaffected by all AgNP treatments...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330310/diversity-and-bioactive-potentials-of-culturable-heterotrophic-bacteria-from-the-surficial-sediments-of-the-arabian-sea
#3
Abdulaziz Anas, Charulatha Nilayangod, C Jasmin, Saradavey Vinothkumar, P S Parameswaran, Shanta Nair
Marine sediments accommodate plethora of diverse microorganisms with varying ecological functions. In the present study, we isolated bacteria from surficial sediments of south east Arabian Sea (AS) and evaluated their bioactive potentials. A total of 131 isolates belonging to the phylum: γ-Proteobacteria (63%), Bacillales (34%) and Micrococcaceae (3%) were isolated. Among these, about 40% of the isolates showed the presence of secondary metabolite biosynthetic genes such as PKS or NRPS or both. Organic extracts of nearly 50% of these organisms were cytotoxic to human breast cancer MCF-7 cells and were bactericidal to human pathogens, Escherichia coli and Pseudomonas sp...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330235/antimicrobial-activities-of-a-promising-glycolipid-biosurfactant-from-a-novel-marine-staphylococcus-saprophyticus-sbps-15
#4
P Mani, G Dineshkumar, T Jayaseelan, K Deepalakshmi, C Ganesh Kumar, S Senthil Balan
Biosurfactants have gained a renewed interest in the recent years for their commercial application in diverse research areas. Recent evidences suggest that the antimicrobial activities exhibited by biosurfactants make them promising molecules for the application in the field of therapeutics. Marine microbes are well known for their unique metabolic and functional properties; however, few reports are available till date regarding their biosurfactant production and antimicrobial potential. In an ongoing survey for bioactive microbial metabolites from microbes isolated from diverse ecological niches, a marine Staphylococcus saprophyticus SBPS 15 isolated from the petroleum hydrocarbon contaminated coastal site, Puducherry, India, was identified as a promising biosurfactant producer based on multiple screening methods...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330207/a-pmoa-based-study-reveals-dominance-of-yet-uncultured-type-i-methanotrophs-in-rhizospheres-of-an-organically-fertilized-rice-field-in-india
#5
Pranitha S Pandit, Dilip R Ranade, Prashant K Dhakephalkar, Monali C Rahalkar
Rice fields are one of the important sources of anthropogenic methane. Methanotrophs can oxidize up to 30 % of the produced methane and thus have a pivotal environmental role in methane mitigation. India occupies the largest region under rice cultivation; however, most of the studies done on methanotrophic communities have focused on the Northern region. We studied methanotrophic community of a flooded, organically fertilized rice field using pmoA clone library approach. Organic rice fields impose a more serious threat as they produce more methane...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330167/genetic-characterization-of-moroccan-and-the-exotic-bread-wheat-cultivars-using-functional-and-random-dna-markers-linked-to-the-agronomic-traits-for-genomics-assisted-improvement
#6
Fatima Henkrar, Jamal El-Haddoury, Hassan Ouabbou, Najib Bendaou, Sripada M Udupa
Genetic characterization, diversity analysis and estimate of the genetic relationship among varieties using functional and random DNA markers linked to agronomic traits can provide relevant guidelines in selecting parents and designing new breeding strategies for marker-assisted wheat cultivar improvement. Here, we characterize 20 Moroccan and 19 exotic bread wheat (Triticum aestivum L.) cultivars using 47 functional and 7 linked random DNA markers associated with 21 loci of the most important traits for wheat breeding...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330103/profiling-and-production-of-hemicellulases-by-thermophilic-fungus-malbranchea-flava-and-the-role-of-xylanases-in-improved-bioconversion-of-pretreated-lignocellulosics-to-ethanol
#7
Manju Sharma, Chhavi Mahajan, Manpreet S Bhatti, Bhupinder Singh Chadha
This study reports thermophilic fungus Malbranchea flava as a potent source of xylanase and xylan-debranching accessory enzymes. M. flava produced high levels of xylanase on sorghum straw containing solidified culture medium. The optimization of culture conditions for production of hemicellulases was carried out using one factor at a time approach and Box-Behnken design of experiments with casein (%), inoculum age (h) and inoculum level (ml) as process variables and xylanase, β-xylosidase, acetyl esterases and arabinofuranosidase as response variables...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330085/bioprospecting-and-biotechnological-applications-of-fungal-laccase
#8
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/28330074/catalytic-properties-functional-attributes-and-industrial-applications-of-%C3%AE-glucosidases
#9
Gopal Singh, A K Verma, Vinod Kumar
β-Glucosidases are diverse group of enzymes with great functional importance to biological systems. These are grouped in multiple glycoside hydrolase families based on their catalytic and sequence characteristics. Most studies carried out on β-glucosidases are focused on their industrial applications rather than their endogenous function in the target organisms. β-Glucosidases performed many functions in bacteria as they are components of large complexes called cellulosomes and are responsible for the hydrolysis of short chain oligosaccharides and cellobiose...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330073/cladosporium-cladosporioides-from-the-perspectives-of-medical-and-biotechnological-approaches
#10
REVIEW
Manaf AlMatar, Essam A Makky
Fungi are important natural product sources that have enormous potential for the production of novel compounds for use in pharmacology, agricultural applications and industry. Compared with other natural sources such as plants, fungi are highly diverse but understudied. However, research on Cladosporium cladosporioides revealed the existence of bioactive products such as p-methylbenzoic acid, ergosterol peroxide (EP) and calphostin C as well as enzymes including pectin methylesterase (PME), polygalacturonase (PG) and chlorpyrifos hydrolase...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329896/characterizing-literacy-and-cognitive-function-during-pregnancy-and-postpartum
#11
Lynn M Yee, Leslie A Kamel, Zara Quader, Priya V Rajan, Shaneah M Taylor, Rachel O'Conor, Michael S Wolf, Melissa A Simon
Objective The objective of this study was to characterize health literacy and cognitive function in a diverse cohort of pregnant women. Methods Pregnant and postpartum women underwent in-depth assessments of health literacy/numeracy and the cognitive domains of verbal ability, working memory, long-term memory, processing speed, and inductive reasoning. Differences by demographic characteristics and gestational age were assessed using chi-square tests and multivariable logistic regression. Results In this cohort of pregnant (N = 77) or postpartum (N = 24) women, 41...
March 22, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28329827/the-influence-of-the-physical-envirnment-on-residents-with-dementia-in-long-term-care-settings-a-review-of-the-empirical-literature
#12
Habib Chaudhury, Heather A Cooke, Heather Cowie, Leila Razaghi
Background and Objectives: The physical environment in long-term care facilities has an important role in the care of residents with dementia. This paper presents a literature review focusing on recent empirical research in this area and situates the research with therapeutic goals related to the physical environment. Research Design and Methods: A comprehensive literature search was conducted in Ageline, PsychINFO, CINAHL, Medline and Google Scholar databases to identify relevant articles...
March 10, 2017: Gerontologist
https://www.readbyqxmd.com/read/28329766/complex-pectin-metabolism-by-gut-bacteria-reveals-novel-catalytic-functions
#13
Didier Ndeh, Artur Rogowski, Alan Cartmell, Ana S Luis, Arnaud Baslé, Joseph Gray, Immacolata Venditto, Jonathon Briggs, Xiaoyang Zhang, Aurore Labourel, Nicolas Terrapon, Fanny Buffetto, Sergey Nepogodiev, Yao Xiao, Robert A Field, Yanping Zhu, Malcolm A O'Neill, Breeanna R Urbanowicz, William S York, Gideon J Davies, D Wade Abbott, Marie-Christine Ralet, Eric C Martens, Bernard Henrissat, Harry J Gilbert
The metabolism of carbohydrate polymers drives microbial diversity in the human gut microbiota. It is unclear, however, whether bacterial consortia or single organisms are required to depolymerize highly complex glycans. Here we show that the gut bacterium Bacteroides thetaiotaomicron uses the most structurally complex glycan known: the plant pectic polysaccharide rhamnogalacturonan-II, cleaving all but 1 of its 21 distinct glycosidic linkages. The deconstruction of rhamnogalacturonan-II side chains and backbone are coordinated to overcome steric constraints, and the degradation involves previously undiscovered enzyme families and catalytic activities...
March 22, 2017: Nature
https://www.readbyqxmd.com/read/28329679/mammalian-diaphanous-1-mediates-a-pathway-for-e-cadherin-to-stabilize-epithelial-barriers-through-junctional-contractility
#14
Bipul R Acharya, Selwin K Wu, Zi Zhao Lieu, Robert G Parton, Stephan W Grill, Alexander D Bershadsky, Guillermo A Gomez, Alpha S Yap
Formins are a diverse class of actin regulators that influence filament dynamics and organization. Several formins have been identified at epithelial adherens junctions, but their functional impact remains incompletely understood. Here, we tested the hypothesis that formins might affect epithelial interactions through junctional contractility. We focused on mDia1, which was recruited to the zonula adherens (ZA) of established Caco-2 monolayers in response to E-cadherin and RhoA. mDia1 was necessary for contractility at the ZA, measured by assays that include a FRET-based sensor that reports molecular-level tension across αE-catenin...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28329018/a-unique-microrna-profile-in-end-stage-heart-failure-indicates-alterations-in-specific-cardiovascular-signaling-networks
#15
Sathyamangla V Naga Prasad, Manveen K Gupta, Zhong-Hui Duan, Venkata Suresh K Surampudi, Chang-Gong Liu, Ashwin Kotwal, Christine S Moravec, Randall C Starling, Dianne M Perez, Subha Sen, Qingyu Wu, Edward F Plow, Sadashiva Karnik
It is well established that the gene expression patterns are substantially altered in cardiac hypertrophy and heart failure, however, less is known about the reasons behind such global differences. MicroRNAs (miRNAs) are short non-coding RNAs that can target multiple molecules to regulate wide array of proteins in diverse pathways. The goal of the study was to profile alterations in miRNA expression using end-stage human heart failure samples with an aim to build signaling network pathways using predicted targets for the altered miRNA and to determine nodal molecules regulating individual networks...
2017: PloS One
https://www.readbyqxmd.com/read/28328744/non-canonical-roles-of-grks-in-cardiovascular-signaling
#16
Sarah M Schumacher, Walter J Koch
G protein-coupled receptor kinases (GRKs) are classically known for their role in regulating the activity of the largest known class of membrane receptors, which influence diverse biological processes in every cell type in the human body. As researchers have tried to uncover how this family of kinases, containing only 7 members, achieves selective and coordinated control of receptors, they have uncovered a growing number of non-canonical activities for these kinases. These activities include phosphorylation of non-receptor targets and kinase-independent molecular interactions...
March 17, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28328703/functionality-of-patients-75-years-and-older-undergoing-mohs-micrographic-surgery-a-multicenter-study
#17
Christie G Regula, Murad Alam, Ramona Behshad, Marc Glashofer, C William Hanke, Christopher Harmon, Ryan Johnson, David Kent, Patrick Lee, Naomi Lawrence
BACKGROUND: Mohs surgery is indisputably a highly effective treatment for nonmelanoma skin cancers. In the current health care environment, physicians are challenged to provide high quality, efficacious care in a manner that is mindful of the patient's general health and well-being. We have used a functional assessment to evaluate older patients who present for Mohs surgery. OBJECTIVE: The purpose of this study is to categorize the functional status, using the Karnofsky Performance Status (KPS) Scale, of patients 75 years and older undergoing Mohs surgery of a nonmelanoma skin cancer and to identify distinguishing characteristics of lower functioning patients...
March 21, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28328290/cross-talk-between-rho-gtpases-and-pi3k-in-the-neutrophil
#18
Barry McCormick, Julia Y Chu, Sonja Vermeren
Neutrophils are short-lived, abundant peripheral blood leukocytes that provide a first line of defense against bacterial and fungal infections whilst also being a key part of the inflammatory response. Chemokines induce neutrophil recruitment to inflammatory sites, where neutrophils perform a number of diverse functions that are aimed at fighting infections. Neutrophil effector functions are tightly regulated processes that are governed by an array of intracellular signaling pathways and initiated by receptor-ligand binding events...
March 22, 2017: Small GTPases
https://www.readbyqxmd.com/read/28328177/maternal-vernalization-and-vernalization-pathway-genes-influence-progeny-seed-germination
#19
Gabriela A Auge, Logan K Blair, Hannah Neville, Kathleen Donohue
Different life stages frequently respond to the same environmental cue to regulate development so that each life stage is matched to its appropriate season. We investigated how independently each life stage can respond to shared environmental cues, focusing on vernalization, in Arabidopsis thaliana plants. We first tested whether effects of rosette vernalization persisted to influence seed germination. To test whether genes in the vernalization flowering pathway also influence germination, we assessed germination of functional and nonfunctional alleles of these genes and measured their level of expression at different life stages in response to rosette vernalization...
March 22, 2017: New Phytologist
https://www.readbyqxmd.com/read/28328004/red-ml-a-novel-effective-rna-editing-detection-method-based-on-machine-learning
#20
Heng Xiong, Dongbing Liu, Qiye Li, Mengyue Lei, Liqin Xu, Liang Wu, Zongji Wang, Shancheng Ren, Wangsheng Li, Min Xia, Lihua Lu, Haorong Lu, Yong Hou, Shida Zhu, Xin Liu, Yinghao Sun, Jian Wang, Huanming Yang, Kui Wu, Xun Xu, Leo J Lee
Background: With the advancement of second generation sequencing techniques, our ability to detect and quantify RNA editing on a global scale has been vastly improved. As a result, RNA editing is now being studied under a growing number of biological conditions so that its biochemical mechanisms and functional roles can be further understood. However, a major barrier that prevents RNA editing from being a routine RNA-seq analysis, similar to gene expression and splicing analysis for example, is the lack of user-friendly and effective computational tools...
March 2, 2017: GigaScience
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