Differential gene transfers and gene duplications in primary and secondary endosymbioses

By S. Zauner, P. Lockhart, B. Stoebe-Maier, Paul R. Gilson, G. Mcfadden, U. Maier. BMC Evolutionary Biology, 2006

1,155 citations recorded by the source corpus.

BackgroundMost genes introduced into phototrophic eukaryotes during the process of endosymbiosis are either lost or relocated into the host nuclear genome. In contrast, gro EL homologues are found in different genome compartments among phototrophic eukaryotes. Comparative sequence analyses of recently available genome data, have allowed us to reconstruct the evolutionary history of these genes and propose a hypothesis that explains the unusual genome distribution of gro EL homologues.ResultsOur analyses indicate that while two distinct gro EL genes were introduced into eukaryotes by a progenitor of plastids, these particular homologues have not been maintained in all evolutionary lineages. This is of significant interest, because two chaperone proteins always co-occur in oxygenic photosynthetic organisms. We infer strikingly different lineage specific processes of evolution involving deletion, duplication and targeting of gro EL proteins.ConclusionThe requirement of two gro EL homologues for chaperon function in phototrophs has provided a constraint that has shaped convergent evolutionary scenarios in divergent evolutionary lineages. Gro EL provides a general evolutionary model for studying gene transfers and convergent evolutionary processes among eukaryotic lineages.

Subfields: Ecology, Evolution, Behavior and Systematics, Insect Science, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/9f192819f7e3597f2ba35534e396f7a31e9a1a10

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Ecology, Evolution, Behavior and Systematics

In Insect Science

In Molecular Biology

Citations in the corpus

A molecular test for cryptic diversity in ground water: how large are the ranges of macro-stygobionts? (2009, methodology): “Prior to tree searches, optimal models were selected by applying the criteria implemented in the program Modelgenerator (http://bioinf.nuim.ie/software/ modelgenerator/; Keane et al., 2006).”
Fifteen species in one: deciphering the Brachionus plicatilis species complex (Rotifera, Monogononta) through DNA taxonomy (2017, neutral): “85 (Keane et al., 2006) independently for each marker.”
Flammable biomes dominated by eucalypts originated at the Cretaceous-Palaeogene boundary. (2011, methodology): “Each partition was assigned an independent General Time Reversible model of nucleotide substitution, chosen using the Bayesian information criterion, as calculated using Modelgenerato”
Septins: the fourth component of the cytoskeleton (2012, neutral): “Since the discovery of septins in yeast, proteins with homologous sequences have been identified in nearly all eukaryotes, including human”
PhylomeDB v3.0: an expanding repository of genome-wide collections of trees, alignments and phylogeny-based orthology and paralogy predictions (2010, result): “Confirming earlier observations (6,26), this procedure was found to provide the same result as a full ML approach in >98% of the cases (results not shown).”
The human phylome (2007, background): “This confirms and extends earlier results [23] and, more importantly, suggests that the pipeline can be simplified by basing the model selection on the tree produced by BioNJ.”