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58 materials found

Keywords: Exploratory-analysis  or metagenomics  or Cells and Organisms  or Babraham Institute 


Introducing Bivi.co

Introduction to the Bivi community presented as the introductory talk at the 1st Bivi Annual Meeting. Created at: 1st BiVi Annual Meeting.

Scientific topics: Phylogenetics, Pathway or network

Keywords: Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations

Resource type: Video

Introducing Bivi.co https://tess.elixir-europe.org/materials/introducing-bivi-co Introduction to the Bivi community presented as the introductory talk at the 1st Bivi Annual Meeting. Created at: 1st BiVi Annual Meeting. Prof. Jessie Kennedy Phylogenetics Pathway or network Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations 2016-12-08
Biological Networks

Scooter Morris (http://www.cgl.ucsf.edu/home/scooter/) talks about the opportunities and challenges in mapping biological networks and gives an brief overview of Cytoscape (http://www.cytoscape.org/), an open source bioinformatics software platform for visualizing molecular interaction...

Scientific topics: Pathway or network

Keywords: Cells and Organisms, Pathway

Resource type: Video

Biological Networks https://tess.elixir-europe.org/materials/biological-networks Scooter Morris (http://www.cgl.ucsf.edu/home/scooter/) talks about the opportunities and challenges in mapping biological networks and gives an brief overview of Cytoscape (http://www.cytoscape.org/), an open source bioinformatics software platform for visualizing molecular interaction networks.(PLEASE NOTE: There is a small formatting problem with the presentation slides for the first 2 min of the talk only). This video was filmed and distributed with permission under a Creative Commons license. Created at: VIZBI 2013. Dr. Scooter Morris Pathway or network Cells and Organisms, Pathway 2017-01-31
Cellular Image Data

Peter Sorger (http://sorger.med.harvard.edu/) and Bang Wong (http://bang.clearscience.info/) talk about the challenges of visualising large sets of multidimensional data (e.g. single cell imaging, dose-response assays, multiplex biochemistry etc.).This video was filmed and distributed with...

Keywords: Cells and Organisms

Resource type: Video

Cellular Image Data https://tess.elixir-europe.org/materials/cellular-image-data Peter Sorger (http://sorger.med.harvard.edu/) and Bang Wong (http://bang.clearscience.info/) talk about the challenges of visualising large sets of multidimensional data (e.g. single cell imaging, dose-response assays, multiplex biochemistry etc.).This video was filmed and distributed with permission under a Creative Commons license. Created at: VIZBI 2013. Bang Wong Cells and Organisms 2017-01-31
BBSRC: Data and Data Visualisation

Michael Ball from BBSRC's closing remarks on Data and Data Visualisation from 1st BiVi in 2014. Created at: 1st BiVi Annual Meeting.

Scientific topics: Phylogenetics, Pathway or network

Keywords: Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations, Information visualisation

Resource type: Video

BBSRC: Data and Data Visualisation https://tess.elixir-europe.org/materials/bbsrc-data-and-data-visualisation Michael Ball from BBSRC's closing remarks on Data and Data Visualisation from 1st BiVi in 2014. Created at: 1st BiVi Annual Meeting. Michael Ball Phylogenetics Pathway or network Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations, Information visualisation 2017-02-01
Cell lineage visualisation

Dr A J Pretorius discusses Cell-o-pane, a cell lineage visulaisation tool at 1st BiVi in 2014. As assoicated poster also presented a the meeting is included. Created at: 1st BiVi Annual Meeting.

Keywords: Cells and Organisms, Molecular

Resource type: Video

Cell lineage visualisation https://tess.elixir-europe.org/materials/cell-lineage-visualisation Dr A J Pretorius discusses Cell-o-pane, a cell lineage visulaisation tool at 1st BiVi in 2014. As assoicated poster also presented a the meeting is included. Created at: 1st BiVi Annual Meeting. Dr. A.J. Pretorius Cells and Organisms, Molecular 2017-02-01
BioLayout Express 3D

Derek Wright discusses the BioLayout Express visualisation tool at 1st BiVi in 2014. Created at: 1st BiVi Annual Meeting.

Scientific topics: Pathway or network

Keywords: Cells and Organisms, Genome, Pathway

Resource type: Video

BioLayout Express 3D https://tess.elixir-europe.org/materials/biolayout-express-3d Derek Wright discusses the BioLayout Express visualisation tool at 1st BiVi in 2014. Created at: 1st BiVi Annual Meeting. Derek Wright Pathway or network Cells and Organisms, Genome, Pathway 2017-02-02
Zegami: A tool for image data exploration

Stephen Taylor discusses the Zegami visualisation tool at 1st BiVi in 2014. An associated poster is also available. Created at: 1st BiVi Annual Meeting.

Keywords: Anatomy Physiology and Atlases, Cells and Organisms, Genome

Resource type: Poster, Video

Zegami: A tool for image data exploration https://tess.elixir-europe.org/materials/zegami-a-tool-for-image-data-exploration Stephen Taylor discusses the Zegami visualisation tool at 1st BiVi in 2014. An associated poster is also available. Created at: 1st BiVi Annual Meeting. Stephen Taylor Anatomy Physiology and Atlases, Cells and Organisms, Genome 2017-02-02
Zegami: Image visualisation, annotation and searching

Stephen Taylor describes and demonstrates Zegami at 2nd BiVi in 2015. Created at: 2nd BiVi Annual Meeting.

Keywords: Anatomy Physiology and Atlases, Cells and Organisms, Genome

Resource type: Slideshow

Zegami: Image visualisation, annotation and searching https://tess.elixir-europe.org/materials/zegami-image-visualisation-annotation-and-searching Stephen Taylor describes and demonstrates Zegami at 2nd BiVi in 2015. Created at: 2nd BiVi Annual Meeting. Stephen Taylor Anatomy Physiology and Atlases, Cells and Organisms, Genome 2017-02-03
Art and Science: A partnership catalyzing discovery in biomedicine

A 3rd BiVi 2017 Keynote Presentation by Bang Wong, Broad Institute of MIT & Harvard and Department of Art as Applied to Medicine, Johns Hopkins University School of MedicineChaired by: Geoff BartonThe data generated by the biomedical research community hold tremendous potential to inform our...

Scientific topics: Phylogenetics, Pathway or network

Keywords: Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations, Communication, Information visualisation

Resource type: Video

Art and Science: A partnership catalyzing discovery in biomedicine https://tess.elixir-europe.org/materials/art-and-science-a-partnership-catalyzing-discovery-in-biomedicine A 3rd BiVi 2017 Keynote Presentation by Bang Wong, Broad Institute of MIT & Harvard and Department of Art as Applied to Medicine, Johns Hopkins University School of MedicineChaired by: Geoff BartonThe data generated by the biomedical research community hold tremendous potential to inform our understanding and treatment of disease. The challenge is to ensure that technical and non-technical researchers can access, use and learn from this wealth of data and analytical resources. Bang will present examples of solutions developed at the Broad Institute that draw on art and design to enable scientific discovery.Bang Wong is the creative director of the Broad Institute of MIT & Harvard and an adjunct assistant professor in the Department of Art as Applied to Medicine at the Johns Hopkins University School of Medicine. His work focuses on the design and development of computation-visualization tools to meet the analytical challenges of research data. He leads the data visualization initiative at the Broad and is the founding author of Points of View published by Nature Methods, a series of articles that focus on the fundamental aspects of data presentation in science. Created at: 3rd BiVi Annual Meeting (2017). Bang Wong Phylogenetics Pathway or network Anatomy Physiology and Atlases, Cells and Organisms, Genome, Molecular, Pathway, Phylogenetics, Populations, Communication, Information visualisation 2017-05-12
Zegami: Digital Data Integration, Visualisation and Management

Stephen Taylor discusses Zegami with examples and latest developments at 3rd BiVi in April 2017.Zegami has the potential to do for images what the spreadsheet did for number calculations. It provides a way of manipulating images and derived values (from the images themselves or annotated...

Scientific topics: Database management

Keywords: Cells and Organisms, Databases

Resource type: Video

Zegami: Digital Data Integration, Visualisation and Management https://tess.elixir-europe.org/materials/zegami-digital-data-integration-visualisation-and-management Stephen Taylor discusses Zegami with examples and latest developments at 3rd BiVi in April 2017.Zegami has the potential to do for images what the spreadsheet did for number calculations. It provides a way of manipulating images and derived values (from the images themselves or annotated metadata) on a massive scale allowing querying and organisation of large image based collections. The talk will show various examples of its usage in biology and beyond, and will look at new features such as annotation to build training sets for machine learning. Created at: 3rd BiVi Annual Meeting (2017). Stephen Taylor Database management Cells and Organisms, Databases 2017-05-12
Model organism analysis using Intermine

Poster presented at 3rd BiVi in April 2017.InterMine is an open source data warehouse based in the University of Cambridge. We integrate data from disparate sources and provide a single unified interface, allowing you to access your data via an easy-to-use webapp or API. InterMine has over 30...

Keywords: Cells and Organisms

Resource type: Poster

Model organism analysis using Intermine https://tess.elixir-europe.org/materials/model-organism-analysis-using-intermine Poster presented at 3rd BiVi in April 2017.InterMine is an open source data warehouse based in the University of Cambridge. We integrate data from disparate sources and provide a single unified interface, allowing you to access your data via an easy-to-use webapp or API. InterMine has over 30 different instances worldwide, covering model organisms, plants, mitochondrial DNA, drug targeting, and more.  Created at: 3rd BiVi Annual Meeting (2017). Ms. Yo Yehudi Cells and Organisms 2017-05-30
Quality Control in Sequencing Experiments

This course looks at the different ways in which sequencing based studies can fail and the options for visualisation and QC which allow you to identify and diagnose these failures at an early stage. It is designed to be of use to anyone who is using sequencing as part of their research, not just...

Scientific topics: Quality affairs

Keywords: Babraham Institute

Quality Control in Sequencing Experiments https://tess.elixir-europe.org/materials/quality-control-in-sequencing-experiments This course looks at the different ways in which sequencing based studies can fail and the options for visualisation and QC which allow you to identify and diagnose these failures at an early stage. It is designed to be of use to anyone who is using sequencing as part of their research, not just those who are running sequencing facilities. Quality affairs Babraham Institute
Extracting biological information from gene lists

Many experimental designs end up producing lists of hits, usually based around genes or transcripts. Sometimes these lists are small enough that they can be examined individually, but often it is useful to do a more structured functional analysis to try to automatically determine any interesting...

Keywords: Functional analysis, Gene lists, Babraham Institute

Extracting biological information from gene lists https://tess.elixir-europe.org/materials/extracting-biological-information-from-gene-lists Many experimental designs end up producing lists of hits, usually based around genes or transcripts. Sometimes these lists are small enough that they can be examined individually, but often it is useful to do a more structured functional analysis to try to automatically determine any interesting biological themes which turn up in the lists. This course looks at the various software packages, databases and statistical methods which may be of use in performing such an analysis. As well as being a practical guide to performing these types of analysis the course will also look at the types of artefacts and bias which can lead to false conclusions about functionality and will look at the appropriate ways to both run the analysis and present the results for publication. Functional analysis, Gene lists, Babraham Institute
Sample size estimation

Power analysis is a method to estimate the samples sizes needed to detect statistical effects with high probability. This course provides an introduction to the basic principles of power analysis and goes through the variables for power calculation. It also addresses the issues associated with...

Keywords: Power analysis, Sample size, Babraham Institute

Sample size estimation https://tess.elixir-europe.org/materials/sample-size-estimation Power analysis is a method to estimate the samples sizes needed to detect statistical effects with high probability. This course provides an introduction to the basic principles of power analysis and goes through the variables for power calculation. It also addresses the issues associated with technical and biological replicates. The program is intended for people who have no prior knowledge of power. Basic statistical knowledge is extremely useful but prior attendance on a statistics course is not compulsary. Power analysis, Sample size, Babraham Institute
Statistical Analysis using SPSS

Statistics are an important part of most modern studies and being able to effectively use a statistics package can help you to understand your results. This course provides an introduction to statistics illustrated though the use of the friendly SPSS package.

Scientific topics: Statistics and probability

Keywords: Babraham Institute

Statistical Analysis using SPSS https://tess.elixir-europe.org/materials/statistical-analysis-using-spss Statistics are an important part of most modern studies and being able to effectively use a statistics package can help you to understand your results. This course provides an introduction to statistics illustrated though the use of the friendly SPSS package. Statistics and probability Babraham Institute
Statistical Analysis using GraphPad Prism

GraphPad Prism is a powerful and friendly package which allows you to plot and analyse your data. This course acts not only as an introduction to Prism, but also goes through the basic statistical knowledge which should allow you to make the most of your data.

Keywords: GraphPad Prism, Babraham Institute

Statistical Analysis using GraphPad Prism https://tess.elixir-europe.org/materials/statistical-analysis-using-graphpad-prism GraphPad Prism is a powerful and friendly package which allows you to plot and analyse your data. This course acts not only as an introduction to Prism, but also goes through the basic statistical knowledge which should allow you to make the most of your data. GraphPad Prism, Babraham Institute
Scientific Figure Design

This course provides a practical guide to producing figures for use in reports and publications. It is a wide ranging course which looks at how to design figures to clearly and fairly represent your data, the practical aspects of graph creation, the allowable manipulation of bitmap images and...

Scientific topics: Data visualisation

Keywords: Figure design, Babraham Institute

Scientific Figure Design https://tess.elixir-europe.org/materials/scientific-figure-design This course provides a practical guide to producing figures for use in reports and publications. It is a wide ranging course which looks at how to design figures to clearly and fairly represent your data, the practical aspects of graph creation, the allowable manipulation of bitmap images and compositing and editing of final figures. The course will use a number of different open source software packages and is illustrated with a number of example figures adapted from common analysis tools. Data visualisation Figure design, Babraham Institute
An Introduction to Unix

Increasing amounts of bioinformatics work is done in a command line unix environment. Most large scale processing applications are written for unix and most large scale compute environments are also based on this. This course provides an introduction to the concepts of unix and provides a...

Keywords: Unix, Babraham Institute

An Introduction to Unix https://tess.elixir-europe.org/materials/an-introduction-to-unix Increasing amounts of bioinformatics work is done in a command line unix environment. Most large scale processing applications are written for unix and most large scale compute environments are also based on this. This course provides an introduction to the concepts of unix and provides a practical introduction to working in this environment. Internally we link this course to a more specific course illustrating the use of our internal cluster environment and this part of the course could be adapted for other sites with different compute infrastructure. Unix, Babraham Institute
An Introduction to ggplot

Ggplot is the most popular plotting extension to R and replicates many of the graph types found in the core plotting libraries. This course provides an introduction to the ggplot2 libraries and gives a practical guide for how to use these to create different types of graphs.

Keywords: ggPlot, Babraham Institute

An Introduction to ggplot https://tess.elixir-europe.org/materials/an-introduction-to-ggplot Ggplot is the most popular plotting extension to R and replicates many of the graph types found in the core plotting libraries. This course provides an introduction to the ggplot2 libraries and gives a practical guide for how to use these to create different types of graphs. ggPlot, Babraham Institute
Plotting complex figures with R

This course is a comprehensive guide to the use of the built in R plotting functionality to construct everything from customised simple plots to complex multi-layered figures. It follows on from the material in our introductory R course and participants are expected to have a basic understanding...

Keywords: Graph plotting, R Programming, Babraham Institute

Plotting complex figures with R https://tess.elixir-europe.org/materials/plotting-complex-figures-with-r This course is a comprehensive guide to the use of the built in R plotting functionality to construct everything from customised simple plots to complex multi-layered figures. It follows on from the material in our introductory R course and participants are expected to have a basic understanding of R - enough to load and do basic manipulation of datasets. Graph plotting, R Programming, Babraham Institute
Advanced R

This course follows on from the introductory course. It goes into more detail on practical guides to filtering and combining complex data sets. It also looks at other core R concepts such as looping with apply statements and using packages. Finally it looks at how to document your R analyses and...

Keywords: R programming, Babraham Institute

Advanced R https://tess.elixir-europe.org/materials/advanced-r This course follows on from the introductory course. It goes into more detail on practical guides to filtering and combining complex data sets. It also looks at other core R concepts such as looping with apply statements and using packages. Finally it looks at how to document your R analyses and generate complete analysis reports. R programming, Babraham Institute
Introduction to R

R is a popular language and environment that allows powerful and fast manipulation of data, offering many statistical and graphical options. This course aims to introduce R as a tool for statistics and graphics, with the main aim being to become comfortable with the R environment. It will focus...

Scientific topics: Software engineering

Keywords: R programming, Babraham Institute

Introduction to R https://tess.elixir-europe.org/materials/introduction-to-r R is a popular language and environment that allows powerful and fast manipulation of data, offering many statistical and graphical options. This course aims to introduce R as a tool for statistics and graphics, with the main aim being to become comfortable with the R environment. It will focus on entering and manipulating data in R and producing simple graphs. A few functions for basic statistics will be briefly introduced, but statistical functions will not be covered in detail. Software engineering R programming, Babraham Institute
Learning to Program with Perl

This course aims to introduce the basic features of the Perl language. At the end you should have everything you need to write moderately complicated programs, and enough pointers to other resources to get you started on bigger projects. The course tries to provide a grounding in the basic theory...

Keywords: perl, Babraham Institute

Learning to Program with Perl https://tess.elixir-europe.org/materials/learning-to-program-with-perl This course aims to introduce the basic features of the Perl language. At the end you should have everything you need to write moderately complicated programs, and enough pointers to other resources to get you started on bigger projects. The course tries to provide a grounding in the basic theory you'll need to write programs in any language as well as an appreciation for the right way to do things in Perl. perl, Babraham Institute
Analysing Mapped Sequence Data with SeqMonk

SeqMonk is a program which can analyse large data sets of mapped genomic positions. It is most commonly used to work with data coming from high-throughput sequencing pipelines. The program allows you to view your reads against an annotated genome and to quantitate and filter your data to let...

Scientific topics: Sequence alignment

Keywords: Babraham Institute

Analysing Mapped Sequence Data with SeqMonk https://tess.elixir-europe.org/materials/analysing-mapped-sequence-data-with-seqmonk SeqMonk is a program which can analyse large data sets of mapped genomic positions. It is most commonly used to work with data coming from high-throughput sequencing pipelines. The program allows you to view your reads against an annotated genome and to quantitate and filter your data to let you identify regions of interest. It is a friendly way to explore and analysis very large datasets. This course provides an introduction to the main features of SeqMonk and will run through the anlaysis of a couple of different datasets to show what sort of analysis options it provides. Sequence alignment Babraham Institute
Who is doing what on the cheese surface? Overview of the cheese microbial ecosystem functioning by metatranscriptomic analyses

Cheese ripening is a complex biochemical process driven by microbial communities composed of both eukaryotes and prokaryotes. Surface-ripened cheeses are widely consumed all over the world and are appreciated for their characteristic flavor. Microbial community composition has been studied for a...

Keywords: metagenomics

Who is doing what on the cheese surface? Overview of the cheese microbial ecosystem functioning by metatranscriptomic analyses https://tess.elixir-europe.org/materials/who-is-doing-what-on-the-cheese-surface-overview-of-the-cheese-microbial-ecosystem-functioning-by-metatranscriptomic-analyses-55c4b5d0-ba6e-4ae0-879f-7bc27c10b3eb Cheese ripening is a complex biochemical process driven by microbial communities composed of both eukaryotes and prokaryotes. Surface-ripened cheeses are widely consumed all over the world and are appreciated for their characteristic flavor. Microbial community composition has been studied for a long time on surface-ripened cheeses, but only limited knowledge has been acquired about its in situ metabolic activities. We used an iterative sensory procedure to select a simplified microbial consortium, composed of only nine species (three yeasts and six bacteria), producing the odor of Livarot-type cheese when inoculated in a sterile cheese curd. All the genomes were sequenced in order to determine the functional capacities of the different species and facilitate RNA-Seq data analyses. We followed the ripening process of experimental cheeses made using this consortium during four weeks, by metatranscriptomic and biochemical analyses. By combining all of the data, we were able to obtain an overview of the cheese maturation process and to better understand the metabolic activities of the different community members and their possible interactions. We next applied the same approach to investigate the activity of the microorganisms in real cheeses, namely Reblochon-style cheeses. This provided useful insights into the physiological changes that occur during cheese ripening, such as changes in energy substrates, anabolic reactions, or stresses. metagenomics 2016-12-15 2017-01-11
Soil metagenomics, potential and pitfalls

The soil microorganisms are responsible for a range of critical functions including those that directly affect our quality of life (e.g., antibiotic production and resistance – human and animal health, nitrogen fixation -agriculture, pollutant degradation – environmental bioremediation)....

Keywords: metagenomics

Soil metagenomics, potential and pitfalls https://tess.elixir-europe.org/materials/soil-metagenomics-potential-and-pitfalls-04d3bb46-36ba-47c0-9993-9c7d0aacad32 The soil microorganisms are responsible for a range of critical functions including those that directly affect our quality of life (e.g., antibiotic production and resistance – human and animal health, nitrogen fixation -agriculture, pollutant degradation – environmental bioremediation). Nevertheless, genome structure information has been restricted by a large extent to a small fraction of cultivated species. This limitation can be circumvented now by modern alternative approaches including metagenomics or single cell genomics. Metagenomics includes the data treatment of DNA sequences from many members of the microbial community, in order to either extract a specific microorganism’s genome sequence or to evaluate the community function based on the relative quantities of different gene families. In my talk I will show how these metagenomic datasets can be used to estimate and compare the functional potential of microbial communities from various environments with a special focus on antibiotic resistance genes. However, metagenomic datasets can also in some cases be partially assembled into longer sequences representing microbial genetic structures for trying to correlate different functions to their co-location on the same genetic structure. I will show how the microbial community composition of a natural grassland soil characterized by extremely high microbial diversity could be managed for sequentially attempt to reconstruct some bacterial genomes. Metagenomics can also be used to exploit the genetic potential of environmental microorganisms. I will present an integrative approach coupling rrs phylochip and high throughput shotgun sequencing to investigate the shift in bacterial community structure and functions after incubation with chitin. In a second step, these functions of potential industrial interest can be discovered by using hybridization of soil metagenomic DNA clones spotted on high density membranes by a mix of oligonucleotide probes designed to target genes encoding for these enzymes. After affiliation of the positive hybridizing spots to the corresponding clones in the metagenomic library the inserts are sequenced, DNA assembled and annotated leading to identify new coding DNA sequences related to genes of interest with a good coverage but a low similarity against closest hits in the databases confirming novelty of the detected and cloned genes. metagenomics 2016-12-16 2017-01-11
Welcome message

Presentation of the workshop (Chairman: Claudine Médigue)

Keywords: metagenomics

Welcome message https://tess.elixir-europe.org/materials/welcome-message-69dc597e-f839-448f-9c9d-3622ddffd592 Presentation of the workshop (Chairman: Claudine Médigue) metagenomics 2016-12-15 2017-01-11
From Samples to Data : Assuring Downstream Analysis with Upstream Planning

Metagenomic studies have gained increasing popularity in the years since the introduction of next generation sequencing. NGS allows for the production of millions of reads for each sample without the intermediate step of cloning. However, just as in the past, the quality of the data generate by...

Keywords: metagenomics

From Samples to Data : Assuring Downstream Analysis with Upstream Planning https://tess.elixir-europe.org/materials/from-samples-to-data-assuring-downstream-analysis-with-upstream-planning-6fac0f49-b453-4c15-a409-9753fb27ee9b Metagenomic studies have gained increasing popularity in the years since the introduction of next generation sequencing. NGS allows for the production of millions of reads for each sample without the intermediate step of cloning. However, just as in the past, the quality of the data generate by this powerful technology depends on sample preparation, library construction and the selection of appropriate sequencing technology and sequencing depth. Here we explore the different variables involved in the process of preparing samples for sequencing analysis including sample collection, DNA extraction and library construction. We also examine the various sequencing technologies deployed for routine metagenomic analysis and considerations for their use in different model systems including humans, mouse and the environment. Future developments such as long-reads will also be discussed to provide a complete picture of important aspects prior to data analyses which play a critical role in the success of metagenomic studies. metagenomics 2017-01-11
Sequencing 6000 chloroplast genomes : the PhyloAlps project

Biodiversity is now commonly described by DNA based approches. Several actors are currently using DNA to describe biodiversity, and most of the time they use different genetic markers that is hampering an easy sharing of the accumulated knowledges. Taxonomists rely a lot on the DNA Barcoding...

Keywords: metagenomics

Sequencing 6000 chloroplast genomes : the PhyloAlps project https://tess.elixir-europe.org/materials/sequencing-6000-chloroplast-genomes-the-phyloalps-project-a2b30d75-061a-4663-a5b8-593842df23bf Biodiversity is now commonly described by DNA based approches. Several actors are currently using DNA to describe biodiversity, and most of the time they use different genetic markers that is hampering an easy sharing of the accumulated knowledges. Taxonomists rely a lot on the DNA Barcoding initiative, phylogeneticists often prefer markers with better phylogenic properties, and ecologists, with the coming of the DNA metabarcoding, look for a third class of markers easiest to amplify from environmental DNA. Nevertheless they have all the same need of the knowledge accumulated by the others. But having different markers means that the sequecences have been got from different individuals in differente lab, following various protocoles. On that base, building a clean reference database, merging for each species all the available markers becomes a challenge. With the phyloAlps project we implement genome skimming at a large scale and propose it as a new way to set up such universal reference database usable by taxonomists, phylogeneticists, and ecologists. The Phyloalps project is producing for each species of the Alpine flora at least a genome skim composed of six millions of 100bp sequence reads. From such data it is simple to extract all chloroplastic, mitochondrial and nuclear rDNA markers commonely used. Moreover, most of the time we can get access to the complete chloroplast genome sequence and to a shallow sequencing of many nuclear genes. This methodes have already been successfully applied to algeae, insects and others animals. With the new single cell sequencing methods it will be applicable to most of the unicellular organisms. The good question is now : Can we consider the genome skimming as the next-generation DNA barcode ? metagenomics 2016-12-16 2017-01-11
Revealing and analyzing microbial networks: from topology to functional behaviors

Understanding the interactions between microbial communities and their environment well enough to be able to predict diversity on the basis of physicochemical parameters is a fundamental pursuit of microbial ecology that still eludes us. However, modeling microbial communities is a complicated...

Keywords: metagenomics

Revealing and analyzing microbial networks: from topology to functional behaviors https://tess.elixir-europe.org/materials/revealing-and-analyzing-microbial-networks-from-topology-to-functional-behaviors-14d83c7f-c5f9-4738-8cd5-42e48a1088f7 Understanding the interactions between microbial communities and their environment well enough to be able to predict diversity on the basis of physicochemical parameters is a fundamental pursuit of microbial ecology that still eludes us. However, modeling microbial communities is a complicated task, because (i) communities are complex, (ii) most are described qualitatively, and (iii) quantitative understanding of the way communities interacts with their surroundings remains incomplete. Within this seminar, we will illustrate two complementary approaches that aim to overcome these points in different manners. metagenomics 2016-12-16 2017-01-11