Search results for "ARDRA"

The gut microbiota of the wood-feeding termite Reticulitermes lucifugus (Isoptera; Rhinotermitidae)

2016

Termite gut is host to a complex microbial community consisting of prokaryotes, and in some cases flagellates, responsible for the degradation of lignocellulosic material. Here we report data concerning the analysis of the gut microbiota of Reticulitermes lucifugus (Rossi), a lower termite species that lives in underground environments and is widespread in Italy, where it causes damage to wood structures of historical and artistic monuments. A 16S rRNA gene clone library revealed that the R. lucifugus gut is colonized by members of five phyla in the domain Bacteria: Firmicutes (49 % of clones), Proteobacteria (24 %), Spirochaetes (14 %), the candidatus TG1 phylum (12 %), and Bacteroidetes (…

Ar jauniem bioloģiskiem preparātiem apstrādātās augsnes molekulāri bioloģiskais raksturojums

2017

Šī pētījuma mērķis bija noskaidrot divu jaunu bioloģisko preparātu ietekmi uz augsnes mikroorganismu ģenētiskā materiāla koncentrācijām un sugu sastāvu. Pētījums tika sadalīts divos neatkarīgos eksperimentos. Pirmajā eksperimentā pētāmie augsnes parauglaukumi tika apstrādāti ar mikroorganismus saturošu kūdras preparātu, bet otrajā – rapša salmiem un mikroorganismiem ar celulolītisko aktivitāti. Parauglaukumos audzēja miežus un rapsi. Pētījumā tika pielietotas gan klasiskās mikrobioloģijas metodes, lai identificētu augsnes mikrobiotas raksturīgākos pārstāvjus, gan molekulārās – PCR, qPCR, ARDRA, lai noteiktu augsnes mikroorganismu ģenētiskā materiāla koncentrācijas. Tika veikta klasteranalīz…

Changes in chemical and biological soil properties as induced by anthropogenic disturbance: A case study of an agricultural soil under recurrent floo…

2006

Abstract Monitoring the environmental impact of anthropogenic disturbance on soil ecosystem is of great importance for optimizing strategies for soil use, conservation and remediation. The aim of this study was to assess whether and to what extent a long-term, human-induced disturbance could have affected main chemical and biological properties in an agricultural soil. The study site was a hazel (Corylus avellana L.) orchard located in the area surrounding the volcanic apparatus of Somma-Vesuvius (Southern Italy). For the last two decades, the site has been repeatedly subjected to floodings by wastewaters containing not only alluvial sediments but also potentially hazardous compounds from i…

Lactobacillus uvarum sp. nov. - A new lactic acid bacterium isolated from Spanish Bobal grape must

2008

Five strains isolated from grape musts in Spain in 1997, have been characterized by several molecular techniques, and three of them have been identified as pertaining to a new species. All strains are Gram-positive rods, aerotolerant and homofermentative bacteria that do not exhibit catalase activity. Phylogenetic analysis based on 16S rRNA gene sequences placed these strains within the genus Lactobacillus, closely related to Lactobacillus mali. DNA-DNA hybridization experiments confirmed that strain 71 belongs to the lately described species L. satsumensis, strain 88 belongs to L. mali and the other three isolates have an independent status at species level. Restriction analysis of the amp…

Analisi della comunità microbica intestinale di Reticulitermes lucifugus (Rossi) (Isoptera: Rhinotermitidae).

2009

L’intestino delle termiti ospita una comunità microbica di batteri e flagellati anaerobi, responsabile della degradazione del materiale lignocellulosico. La digestione della lignocellulosa da parte delle termiti dipende dalla simbiosi con microrganismi procarioti ed eucarioti che vivono nel loro intestino. I microrganismi trasformano la cellulosa in zuccheri e acetato, producendo idrogeno, metano e anidride carbonica. Abbiamo analizzato la comunità microbica intestinale di Reticulitermes lucifugus lucifugus, una delle due specie di termiti italiane, che vive in ambienti sotterranei, è distruttiva per le strutture legnose degli ambienti urbani causando seri danni ai monumenti storici e può c…

ANALISI DELLA COMUNITÀ MICROBICA INTESTINALE DI Reculitermes lucifugus (ROSSI) (ISOPTERA: RHINOTERMITIDAE)

2012

Reticulitermes lucifugus è una specie di termite diffusa in Italia e che causa gravi danni alle strutture legnose di monumenti storici e artistici. L’intestino delle termiti ospita una comunità microbica di batteri e flagellati, responsabile della degradazione del materiale lignocellulosico. Studi preliminari sulla comunità microbica dei simbionti di R. lucifugus, hanno descritto alcune specie di protozoi, ma non ci sono ancora informazioni sui simbionti batterici. Al fine di caratterizzare la comunità microbica intestinale di R. lucifugus è stato utilizzato un approccio molecolare coltura indipendente e colture di arricchimento per l’isolamento dei batteri cellulosolitici. Per l’analisi co…

Assessing the environmental impact exerted by roads in “operative” conditions - a Highway case-study

2014

Road restraint systems monitoring with stereoscopic dip-technique

2015

Road restraint systems (RRS) are used to protect vehicle occupants from dangerous roadside elements such as rigid obstacles, slopes, utility poles, etc. The crashes on a road restraint system damage its structure and, therefore, the functional behavioral; for this reason is required monitoring the RRS into their operational conditions. The research addresses the problem of the measurement of safety barrier (SB) deformations by means digital image processing technique (DIP). This technique is founded on the analysis of high resolution photos/videos, obtained by means of 3D camera installed into a data vehicle. The DIP technique has been used for evaluating the longitudinal safety barriers de…

Zoe Porphyrogenita and the Varangians

2019

Głównym celem tego artykułu jest przedstawienie relacji cesarzowej Zoe Porfirogenetki (978–1050) ze światem Waregów – z punktu widzenia źródeł bizantyńskich i skandynawskich. Zoe była jedną ze spadkobierczyń dynastii macedońskiej, która odcisnęła swoje piętno na historii Bizancjum w IX-XI w. Najczęściej jej związki ze Skandynawią przedstawiane są w korelacji z bytnością Haralda Hardrady, króla Norwegii w Cesarstwie Bizantyńskim. Ten punkt widzenia zawdzięczamy głównie sagom, które nie są tak wiarygodne jak materiały pisane przez bizantyńkich autorów z XI wieku, a zwłaszcza: Michała Psellosa, Michała Attaliatesa, Jana Skylitzesa – oraz Kekaumenosa. Relacje tych autorów zostały skonfrontowane…

La biologie moléculaire en écologie microbienne du sol : application à l'analyse de la structure des communautés bactériennes

1998

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