Publications by authors named "S Lorena Ament-Velasquez"

The filamentous fungus Podospora anserina is a model organism used extensively in the study of molecular biology, senescence, prion biology, meiotic drive, mating-type chromosome evolution, and plant biomass degradation. It has recently been established that P. anserina is a member of a complex of 7 closely related species.

View Article and Find Full Text PDF

Filamentous fungi display allorecognition genes that trigger regulated cell death (RCD) when strains of unlike genotype fuse. Podospora anserina is one of several model species for the study of this allorecognition process termed heterokaryon or vegetative incompatibility. Incompatibility restricts transmission of mycoviruses between isolates.

View Article and Find Full Text PDF

Background: The genome of the filamentous ascomycete Podospora anserina shows a relatively high abundance of retrotransposons compared to other interspersed repeats. The LTR-retrotransposon family crapaud is particularly abundant in the genome, and consists of multiple diverged sequence variations specifically localized in the 5' half of both long terminal repeats (LTRs). P.

View Article and Find Full Text PDF

The order Sordariales is taxonomically diverse, and harbours many species with different lifestyles and large economic importance. Despite its importance, a robust genome-scale phylogeny, and associated comparative genomic analysis of the order is lacking. In this study, we examined whole-genome data from 99 Sordariales, including 52 newly sequenced genomes, and seven outgroup taxa.

View Article and Find Full Text PDF
Article Synopsis
  • Intrinsic postzygotic isolation results in reduced viability or fertility of hybrids due to genetic incompatibilities between different species' genomes.
  • The two main mechanisms traditionally thought to cause this isolation are Dobzhansky-Muller interactions between genes and chromosomal rearrangements affecting meiosis.
  • Recent studies indicate that intrinsic postzygotic isolation is more complex than previously understood, involving factors like overall DNA divergence and epigenetic changes, and this review examines these mechanisms across various species while addressing gaps in current knowledge.
View Article and Find Full Text PDF