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Four novel genomes from unicellular opisthokontsfor a better understanding of the genomic footprints behind the origin of Metazoa, Fungi and their multicellularity

AuthorsOcaña-Pallarès, Eduard; López-Escardó, David ; Arroyo, Alicia S.; Williams, Tom A.; Bapteste, Eric; Tikhonenkov, Denis V.; Keeling, Patrick; Ruiz-Trillo, Iñaki
Issue DateFeb-2020
PublisherSociedad Española de Biología Evolutiva
CitationVII Congreso de la Sociedad Española de Biología Evolutiva (2020)
AbstractMulticellularity is a major evolutionary transition, responsible of the emergence of complex living forms such as animals. Despite it occurred roughly 20 times in life history, it is in eukaryotes where multicellularity achieved highest levels of complexity. Opisthokonta represents a great phylogenetic framework to study the genomic footprints behind this transition, as it includes two distinct multicellular lineages, animals and fungi, both surrounded by early-branching unicellular relatives. In theory, the comparison between the genomes of the last unicellular and the first multicellular ancestors would reveal which innovations were crucial for the appearance of multicellularity. As these genomes are not accessible, we need to reconstruct them from a well-sampled representation of their descendants. This implies that not only genomic data from animals and multicellular fungi is needed, but also from their immediate unicellular relatives. Unfortunately, the acquisition of genomic data from unicellular Opisthokonta is problematic as there are few cultured species, which most of them usually grow on a large and heterogeneous population of contaminant species. A methodological protocol and bioinformatics pipeline used to generate good quality genomes from polyxenic cultures of three filastereans and one nucleariid species will be presented. Preliminary results from comparative genomics analyses including these four genomes will also be shown
DescriptionVII Biennial Congress of the Spanish Society for Evolutionary Biology - VII Congreso de la Sociedad Española de Biología Evolutiva (SESBE VII), 5-7 February 2020, Seville, Spain
Appears in Collections:(IBE) Comunicaciones congresos
(ICM) Comunicaciones congresos
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