The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/new-rna-virus-species-identified-in-the-global-ocean.aspx DRF english version en-US https://www.cea.fr/_layouts/15/images/i2i/icon-144x144-1033.png The Knowledge Factory - Sur le même thème https://www.cea.fr/drf/english Shifting the acidity peak from winter to summer in the Arctic Ocean and the threat to its ecosystem https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/shifting-the-acidity-peak-from-winter-to-summer-in-the-arctic-ocean-and-the-threat-to-its-ecosystem.aspx A Franco-German study coordinated by the LSCE (CEA-CNRS-UVSQ) estimates that climate change could shift the peak in Arctic Ocean acidity from winter to summer, which would be disruptive to the ecosystem. Impact of climate change ; Oceanography ; Climate general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Wed, 05 Oct 2022 10:00:00 GMT 5,500 new RNA virus species identified in the global ocean https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/new-rna-virus-species-identified-in-the-global-ocean.aspx Using seawater samples collected during Tara Ocean expeditions and sequenced by the CEA-Jacob (Genoscope), an international team has identified 5,500 new species of RNA viruses, most of which belong to previously unknown phylogenetic branches. Metagenomics ; Oceanography ; Biodiversity general public ; Journalists ; Researchers Jacob Découvertes et avancées ; Scientific result Fri, 08 Apr 2022 10:00:00 GMT Using genomics to shed a light on climate https://www.cea.fr/drf/english/Pages/News/Scientific-results/2022/using-genomics-to-shed-a-light-on-climate.aspx Using metagenomic analysis, researchers from the CEA-Jacob/Genoscope and the LSCE (CEA-CNRS-UVSQ) have unveiled a “biogeography” of ocean plankton communities. Based on this work, they predict the evolution of their geographical distribution by 2100, with a reduction in the flux of organic carbon from surface waters to the depths. Climate ; Oceanography ; Carbon cycle ; Large-scale biology ; Metagenomics general public ; Journalists ; Researchers LSCE Découvertes et avancées ; Scientific result Tue, 05 Apr 2022 10:00:00 GMT Alpaga : the search for mountain snow microalgae https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ALPALGA-the-search-for-mountain-snow-microalgae.aspx Environment ; Biodiversity ; Climate ; Impact of climate change News ; Press release ; Focus CEA;Mountain;Snow;UGA;CNRS;microalgue;inrae; Mon, 07 Jun 2021 10:00:00 GMT Chlordecone : When the herbicide releases the pesticide from the West Indian soil https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/chlordecone--when-the-herbicide-releases-the-pesticide-from-the-west-indian-soil.aspx According to a collaboration involving the LSCE (CEA-CNRS-UVSQ), chlordecone has reappeared massively in the French West Indies since the end of the 1990s - when the use of glyphosate was introduced - years after it was banned. Environment ; Agronomy ; Oceanography general public ; Journalists ; Researchers LSCE Scientific result Mon, 15 Feb 2021 11:00:00 GMT Ocean circulation would have contributed to the first colonization of North America https://www.cea.fr/drf/english/Pages/News/Scientific-results/2021/ocean-circulation-would-have-contributed-to-the-first-colonization-of-north-america.aspx According to an international study involving researchers from the LSCE (CEA-CNRS-UVSQ), a significant change in ocean currents in the North Pacific would have favored the first human migration from Asia to North America, at the end of the last ice age. Paleoclimates ; Climatic models ; Oceanography general public ; Journalists ; Researchers LSCE Scientific result Thu, 10 Dec 2020 11:00:00 GMT Reducing cultivated land area by half in the interest of climate and biodiversity https://www.cea.fr/drf/english/Pages/News/Scientific-results/2020/reducing-cultivated-land-area-by-half-in-the-interest-of-climate-and-biodiversity.aspx An international collaboration involving the LSCE (CEA-CNRS-UVSQ) is proposing an agronomic scenario that is beneficial for the climate and biodiversity: cultivated areas reduced by half, without changing the input volumes, could be as productive as they are today if our practices are revised on a global scale. Agronomy ; Environment ; Climate ; Biodiversity general public ; Journalists ; Researchers LSCE Scientific result Tue, 05 May 2020 10:00:00 GMT The Tara Oceans mission reveals variations in plankton biodiversity and activity from the equator to the poles https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/The-Tara-Oceans-mission-reveals-variations-in-plankton-biodiversity-and-activity-from-the-equator-to-the-poles.aspx New results from the Tara Oceans expedition, led by a collaboration between the Tara Ocean Foundation and teams from the CNRS, EMBL, CEA, Sorbonne Université and Université Paris Science Lettres between 2009 and 2013 show that the diversity and functions of planktonic species in the global ocean change dramatically according to latitude. Biodiversity ; Genomics ; Environment ; Climate Companies ; general public ; Institutions ; Journalists ; Researchers Jacob Scientific result Mon, 18 Nov 2019 11:00:00 GMT Submarine symbiosis: microorganisms that never get lost https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/Submarine-symbiosis-microorganisms-that-never-get-lost--.aspx A team of CEA-Biam has uncovered a symbiotic behavior between magnetism-using bacteria and eukaryotic microorganisms. Biodiversity ; Bacteria ; Genomics Researchers ; Journalists ; general public BIAM En direct ; Scientific result Tue, 14 May 2019 10:00:00 GMT The Arctic Ocean, cradle of viral biodiversity https://www.cea.fr/drf/english/Pages/News/Scientific-results/2019/The-Arctic-Ocean,-cradle-of-viral-biodiversity.aspx Fundamental Research ; Cellular mechanisms ; Impact of climate change ; Climate ; Oceanography Press release ; Scientific result ; Focus Mon, 29 Apr 2019 10:00:00 GMT Carbon storage in the ocean: diatoms are under surveillance! https://www.cea.fr/drf/english/Pages/News/Scientific-results/2018/Carbon-storage-in-the-ocean-diatoms-are-under-surveillance.aspx An in-depth study of microalgae with a siliceous cell wall (i.e. diatoms) emphasizes that their role in carbon sequestration in the ocean depths has been underestimated and may decline in the coming decades. This prognosis could be affected by the evolution of these species. Oceanography ; Climate Researchers ; general public ; Journalists LSCE Scientific result Mon, 15 Jan 2018 08:00:00 GMT New Step Towards a Better Evaluation of Human Gut Microbiota https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/new-step-towards-a-better-evaluation-of-human-gut-microbiota.aspx The standardization of metagenomic methods is a prerequisite to better understand the human gut microbiota. The step of DNA extraction in this method is critical. Metagenomics ; Bacteria Researchers ; general public ; Journalists GENOSCOPE Scientific result Mon, 09 Oct 2017 10:00:00 GMT Deciphering the Fall Armyworm as it Invades Africa https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/deciphering-the-fall-armyworm-as-it-invades-africa.aspx In collaboration with the CEA François-Jacob Institute and INRIA, scientists from INRA have sequenced the genome of butterfly Spodoptera frugiperda. This common agricultural pest in the Americas is now moving towards the East. Genomics ; Biodiversity Journalists ; Researchers ; general public Fontenay-aux-Roses Scientific result Wed, 27 Sep 2017 10:00:00 GMT How Phytoplankton Colonized the Oceans https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/how-phytoplankton-colonized-the-oceans.aspx What are the photosynthesis mechanisms in phytoplankton? Researchers from CEA-BIG, CEA-IBS and their partners have solved this enigma. Vegetal physiology ; Biodiversity Researchers ; general public ; Journalists BIG Scientific result Thu, 22 Jun 2017 10:00:00 GMT The Success of Nematodes in the Absence of Sex Partly Explained https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/the-success-of-nematodes-in-the-absence-of-sex-partly-explained.aspx Root-knot nematodes are devastating species to global agriculture; those that reproduce asexually are especially thriving. Researchers from CEA-Genoscope and their partners proposed a hypothesis to explain this extraordinary success. Genomics ; Biodiversity Researchers ; general public ; Journalists Jacob Scientific result Mon, 12 Jun 2017 10:00:00 GMT Where do Flowers Come From? Shedding Light on Darwin’s ‘abominable mystery’ https://www.cea.fr/drf/english/Pages/News/Scientific-results/2017/where-do-flowers-come-from-shedding-light-on-darwin-abominable-mystery.aspx The mystery that is the origin of flowering plants has been partially solved. A team from CEA-BIG and their partners have shed light on a question that much intrigued Darwin: the appearance of a structure as complex as the flower over the course of evolution. Climate ; Biodiversity general public ; Journalists ; Researchers BIG Scientific result Fri, 24 Feb 2017 11:00:00 GMT A new giant virus discovered in the Siberian permafrost https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/new-giant-virus-discovered-Siberian-permafrost.aspx A giant virus from a completely new genus was discovered in a Siberian permafrost sample dating back 30,000 years. Genomics, transcriptomics, proteomics and metagenomics draw a detailed portrait of this new virus, known as Mollivirus sibericum. Biodiversity ; Genomics Fontenay-aux-Roses Scientific result Mon, 07 Sep 2015 10:00:00 GMT First mitochondrial genome of an extinct bison species https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/First-mitochondrial-genome-extinct-bison-species.aspx ​A team from the CEA-IBITECS located at the Musée de l'Homme has just determined the complete mitochondrial genome of a steppe bison specimen from a bone fragment dating back 19,000 years, found in the Trois-Frères cave (Ariège). Genomics ; Biodiversity Saclay Scientific result Wed, 17 Jun 2015 10:00:00 GMT Tara Oceans: 40 million new genes decoded https://www.cea.fr/drf/english/Pages/News/Scientific-results/2015/Tara-Oceans-40-million-new-genes-decoded.aspx A special issue of the journal Science features the first results from the Tara Oceans expedition with five publications, in which the CEA-IG participated. Genomics ; Biodiversity GENOSCOPE Scientific result Mon, 25 May 2015 10:00:00 GMT Intestinal microflora: a wealth of new species https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Intestinal-microflora-a-wealth-of-new-species.aspx An international consortium involving teams from the CEA-IG has developed a new method for analyzing metagenomes. This method has been successfully applied to intestinal microflora, revealing hundreds of previously unknown species. Metagenomics ; Biodiversity IG Scientific result ; European & international partnerships Mon, 07 Jul 2014 10:00:00 GMT Rainbow trout: a surprising genome https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Rainbow-trout-a-surprising-genome.aspx A French consortium, coordinated by INRA and involving the CEA (Genoscope), the CNRS and the Ecoles Normales Supérieures of Paris and Lyon, has sequenced and analyzed the genome of the rainbow trout . The result challenges a classic hypothesis in genetics. Biodiversity ; Agronomy ; Genomics Fontenay-aux-Roses Scientific result Tue, 22 Apr 2014 10:00:00 GMT Discovery of a new type of giant virus more than 30,000 years old https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Discovery-of-a-new-type-of-giant-virus-more-than-30000-years-old.aspx A new type of giant virus, dubbed “Pithovirus”, was discovered in the frozen soil of extreme northeast Siberia by researchers from the CNRS/Aix-Marseille Université, CEA-IRTVS, CEA-IG and the Russian Academy of Sciences. Buried in the ground, this giant virus has survived more than 30,000 years of freezing. Genomics ; Biodiversity ; Evolution GENOSCOPE Scientific result Tue, 04 Mar 2014 11:00:00 GMT Is the disappearance of mammoths related to changes in Arctic flora? https://www.cea.fr/drf/english/Pages/News/Scientific-results/2014/Is-the-disappearance-of-mammoths-related-to-changes-in-Arctic-flora.aspx ​The mass extinction of large animals during the last ice age is due to the climate, but what are the specific reasons for this? A collaboration involving 30 teams from 12 countries, including the CEA-IG, has provided some answers by sequencing free DNA taken from the Arctic permafrost. Evolution ; Metagenomics IG Scientific result Fri, 07 Feb 2014 11:00:00 GMT