Publications associées à Two ancient human genomes reveal Polynesian ancestry among the indigenous Botocudos of Brazil

The microbial genomics of glacier-fed streams: adaptations to an extreme ecosystem

Glacier-fed streams are the cold, ultra-oligotrophic, and unstable streams that are fed by glacial meltwater. Despite these extreme conditions, they harbour a diverse and abundant microbial diversity that develops into biofilms, covering the boulders and s ...

EPFL2024

Disentangle genus microdiversity within a complex microbial community by using a multi-distance long-read binning method: example of Candidatus Accumulibacter

Aline Sondra Adler, Christof Holliger, Julien Maillard, Marco Pagni, Simon Marius Jean Poirier

Complete genomes can be recovered from metagenomes by assembling and binning DNA sequences into metagenome assembled genomes (MAGs). Yet, the presence of microdiversity can hamper the assembly and binning processes, possibly yielding chimeric, highly fragm ...

WILEY2022

The Quest for Genes Involved in Adaptation to Climate Change in Ruminant Livestock

Stéphane Joost, Elia Vajana

Simple Summary: After domestication in specific regions, livestock followed human migrations and colonized the whole world. During this population expansion, human and natural selection, together with demographic events, molded the livestock genome leading ...

2021

Rapid identification and interpretation of gene‐environment associations using the new R.SamBada landscape genomics pipeline

Stéphane Joost, Sylvie Stucki, Estelle Rochat, Solange Catherine Gaillard, Oliver Michele Selmoni, Kevin Leempoel, Elia Vajana

Samβada is a genome‐environment association (GEA) software, designed to search for signatures of local adaptation. However, pre‐ and post‐processing of data can be labour‐intensive, preventing wider uptake of the method. We have now developed R.SamBada, an ...

2019

An Interactive Gameplay to Crowdsource Multiple Sequence Alignment of Genome Sequences: Genenigma

Kalpani Anuradha Welivita

Comparative genomics is a field of research that compares genomes of different organisms to identify common patterns. It is a powerful method used to identify the genetic diseases that cause mutations. Multiple Sequence Alignment (MSA) is an intermediate s ...

ASSOC COMPUTING MACHINERY2019

Combining landscape genomics and ecological modelling to investigate local adaptation of indigenous Ugandan cattle to East Coast fever

Stéphane Joost, Estelle Rochat, Elia Vajana

East Coast fever (ECF) is a fatal sickness affecting cattle populations of eastern, central, and southern Africa. The disease is transmitted by the tick Rhipicephalus appendiculatus, and caused by the protozoan Theileria parva parva, which invades host lym ...

2018

Combining Landscape Genomics and Ecological Modelling to Investigate Local Adaptation of Indigenous Ugandan Cattle to East Coast Fever

Stéphane Joost, Estelle Rochat, Elia Vajana

East Coast fever (ECF) is a fatal sickness affecting cattle populations of eastern, central, and southern Africa. The disease is transmitted by the tick Rhipicephalus appendiculatus, and caused by the protozoan Theileria parva parva, which invades host lym ...

2018

New Genome Similarity Measures based on Conserved Gene Adjacencies

Bernard Moret, Shachi Shailesh Deshpande

Many important questions in molecular biology, evolution, and biomedicine can be addressed by comparative genomic approaches. One of the basic tasks when comparing genomes is the definition of measures of similarity (or dissimilarity) between two genomes, ...

Mary Ann Liebert2017

Limits and patterns of cytomegalovirus genomic diversity in humans

Jeffrey David Jensen, Cornelia Pokalyuk

Human cytomegalovirus (HCMV) exhibits surprisingly high genomic diversity during natural infection although little is known about the limits or patterns of HCMV diversity among humans. To address this deficiency, we analyzed genomic diversity among congeni ...

National Academy of Sciences2015

Multi-scale landscape genomic models : the role of very high resolution digital elevation models in evolutionary biology

Kevin Leempoel

Environmental heterogeneity is one of the main actors of biodiversity and species adaptation as it exerts a selective pressure on observable characteristics of living organisms. Consequently, local adaptation favours certain genetic variants and, by doing ...

EPFL2015

High performance computation of landscape genomic models integrating local indices of spatial association

Stéphane Joost, Sylvie Stucki, Pierre Taberlet

Motivation: The increasing availability of high-throughput datasets requires powerful methods to support the detection of signatures of selection in landscape genomics. Results: We present an integrated approach to study signatures of local adaptation, pro ...

2014

Improving Comparative Genomic Studies : Definitions and Algorithms for Syntenic Blocks

Cristina Gabriela Ghiurcuta

Comparative genomics aims to understand the structure of genomes and the function of various genomic fragments, by transferring knowledge gained from well studied genomes, to the new object of study. Rapid and inexpensive high-throughput sequencing is maki ...

EPFL2014

Evaluating synteny for improved comparative studies

Bernard Moret, Cristina Gabriela Ghiurcuta

Motivation: Comparative genomics aims to understand the structure and function of genomes by translating knowledge gained about some genomes to the object of study. Early approaches used pairwise comparisons, but today researchers are attempting to leverag ...

Oxford University Press2014

Adaptive, convergent origins of the pygmy phenotype in African rainforest hunter-gatherers

Matthieu Foll, Xin Zhou

The evolutionary history of the human pygmy phenotype (small body size), a characteristic of African and Southeast Asian rainforest hunter-gatherers, is largely unknown. Here we use a genome-wide admixture mapping analysis to identify 16 genomic regions th ...

National Academy of Sciences2014

Genome analysis of Desulfotomaculum kuznetsovii reveals a physiological similarity with Pelotomaculum thermopropionicum

Rizlan Bernier-Latmani

Desulfotomaculum kuznetsovii is a moderately thermophilic member of the polyphyletic spore-forming genus Desulfotomaculum in the family Peptococcaceae. This species is of interest because it originates from deep subsurface thermal mineral water at a depth ...

Genomic Stand Consort2013

Full-genome RNAi profiling of early embryogenesis in Caenorhabditis elegans

Pierre Gönczy

A key challenge of functional genomics today is to generate well-annotated data sets that can be interpreted across different platforms and technologies. Large-scale functional genomics data often fail to connect to standard experimental approaches of gene ...

2005