Publications by authors named "Guillemette Audren de Kerdrel"
Horizontal gene transfer (HGT) is an important source of novelty in eukaryotic genomes. This is particularly true for the ochrophytes, a diverse and important group of algae. Previous studies have shown that ochrophytes possess a mosaic of genes derived from bacteria and eukaryotic algae, acquired through chloroplast endosymbiosis and from HGTs, although understanding of the time points and mechanisms underpinning these transfers has been restricted by the depth of taxonomic sampling possible.
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- The text discusses how the distinction between producers (like plants) and consumers (like animals) has become less clear due to evolutionary changes, particularly in eukaryotic phototrophs that can lose the ability to photosynthesize while retaining some plastids.
- It presents a study on a nonphotosynthetic chrysophyte, showing that its plastid genome is similar to that of apicomplexan parasites, indicating converging functions despite the loss of photosynthesis.
- The research reveals a range of functional reductions in plastids across different chrysophyte lineages, highlighting specific gene losses and retainments that trace back to their ancestral roles, including the retention of some proteins that were originally involved in plastid gene expression.