| Texto completo | |
| Autor(es): |
Hofstatter, Paulo G.
;
Ribeiro, Giulia M.
;
Porfirio-Sousa, Alfredo L.
;
Lahr, Daniel J. G.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | BIOESSAYS; v. 42, n. 9, p. 10-pg., 2020-07-09. |
| Resumo | |
The distribution pattern of the meiotic machinery in known eukaryotes is most parsimoniously explained by the hypothesis that all eukaryotes are ancestrally sexual. However, this assumption is questioned by preliminary results, in culture conditions. These suggested thatAcanthamoeba, an organism considered to be largely asexual, constitutively expresses meiosis genes nevertheless-at least in the lab. This apparent disconnect between the "meiosis toolkit" and sexual processes inAcanthamoebaled to the conclusion that the eukaryotic ancestor is asexual. In this review, the "meiosis toolkit" is rigorously defended, drawing on numerous research articles. Additionally, the claim of constitutive meiotic gene expression is probed inAcanthamoebavia the same transcriptomics data. The results show that the expression of the meiotic machinery is not constitutive inAcanthamoebaas claimed before. Furthermore, it is argued that this would have no implications for understanding the nature of the eukaryotic ancestor, regardless of the result. (AU) | |
| Processo FAPESP: | 19/22109-0 - Avaliação do impacto de condições ambientais na diversidade taxonômica e funcional de tecamebas |
| Beneficiário: | Giulia Magri Ribeiro |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |