Bacteria were long viewed as simple organisms living in the interstices of a eukaryotic world, but we now know that the opposite is true. Animals, and later, plants, evolved to fit into a microbial world, indeed a world that had existed for three billion years before the first metazoans arose in the oceans. Although simple in morphology, bacteria are remarkably diverse, their collective repertoire of metabolisms dwarfing that of eukaryotes. As they have for ages, bacteria and archaea constitute the fundamental ecological circuitry of our planet, playing critical roles in the cycling of carbon, nitrogen, sulfur and more — sustaining Earth as a biological planet.
Conférence d'Andrew Knoll, professeur de recherche en sciences de la Terre et des planètes à l'Université d'Harvard, dans le cadre de l’édition 2023 de la Conférence Olivier Legrain Sciences et Société intitulée "Louis Pasteur à l’ENS : rencontre entre chimie et biologie"
Voir aussi
|
Cursus :
Andrew Knoll est professeur de recherche en sciences de la Terre et des planètes à l'Université Harvard.
Cliquer ICI pour fermerDernière mise à jour : 10/03/2023