scholarly journals Phytoplankton pangenome reveals extensive prokaryotic horizontal gene transfer of diverse functions

2020 ◽  
Vol 6 (18) ◽  
pp. eaba0111 ◽  
Author(s):  
Xiao Fan ◽  
Huan Qiu ◽  
Wentao Han ◽  
Yitao Wang ◽  
Dong Xu ◽  
...  
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Red Algae ◽  
Reactive Species ◽  
Eukaryotic Evolution ◽  
Polysaccharide Biosynthesis ◽  
The Impact ◽  
Robust Evidence

The extent and role of horizontal gene transfer (HGT) in phytoplankton and, more broadly, eukaryotic evolution remain controversial topics. Recent studies substantiate the importance of HGT in modifying or expanding functions such as metal or reactive species detoxification and buttressing halotolerance. Yet, the potential of HGT to significantly alter the fate of species in a major eukaryotic assemblage remains to be established. We provide such an example for the ecologically important lineages encompassed by cryptophytes, rhizarians, alveolates, stramenopiles, and haptophytes (“CRASH” taxa). We describe robust evidence of prokaryotic HGTs in these taxa affecting functions such as polysaccharide biosynthesis. Numbers of HGTs range from 0.16 to 1.44% of CRASH species gene inventories, comparable to the ca. 1% prokaryote-derived HGTs found in the genomes of extremophilic red algae. Our results substantially expand the impact of HGT in eukaryotes and define a set of general principles for prokaryotic gene fixation in phytoplankton genomes.

scholarly journals Donor-recipient interactions drive dynamics of horizontal gene transfer via natural competence

2020 ◽  
Author(s):  
Yu-Yu Cheng ◽  
James M. Papadopoulos ◽  
Tanya Falbel ◽  
Briana M. Burton ◽  
Ophelia S. Venturelli
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Biotic Interactions ◽  
Interaction Network ◽  
Active Role ◽  
Donor Strain ◽  
Natural Competence ◽  
Opposing Effects ◽  
The Impact

ABSTRACTHorizontal gene transfer (HGT) in microbial communities is shaped by a complex web of abiotic and biotic interactions. We investigate the role of donor-recipient interactions on the dynamics of HGT via natural competence in a synthetic community. We show that the donor can play an active role in the gene transfer process that depends on the source of the transferred DNA. The efficiency of plasmid gene transfer depends on the abundance of the donor strain, whereas donor growth impairment augments the efficiency of chromosomal gene transfer. We show that antibiotic stress can either diminish or enhance the efficiency of gene transfer. A dynamic computational model of the system captures the impact of donor growth perturbations on gene transfer efficiency. Our results suggest that anti-HGT strategies targeting the donor strain can lead to opposing effects on the rate of HGT that depend on the microbial interaction network and source of transferred DNA.

scholarly journals Horizontal Gene Transfer Involving Chloroplasts

2021 ◽  
Vol 22 (9) ◽  
pp. 4484
Author(s):  
Ewa Filip ◽  
Lidia Skuza
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Driving Force ◽  
Genetic Material ◽  
Adaptive Significance ◽  
Chloroplast Genomes ◽  
Organelle Genomes ◽  
Number Of Genes ◽  
Cellular Compartments

Horizontal gene transfer (HGT)- is defined as the acquisition of genetic material from another organism. However, recent findings indicate a possible role of HGT in the acquisition of traits with adaptive significance, suggesting that HGT is an important driving force in the evolution of eukaryotes as well as prokaryotes. It has been noted that, in eukaryotes, HGT is more prevalent than originally thought. Mitochondria and chloroplasts lost a large number of genes after their respective endosymbiotic events occurred. Even after this major content loss, organelle genomes still continue to lose their own genes. Many of these are subsequently acquired by intracellular gene transfer from the original plastid. The aim of our review was to elucidate the role of chloroplasts in the transfer of genes. This review also explores gene transfer involving mitochondrial and nuclear genomes, though recent studies indicate that chloroplast genomes are far more active in HGT as compared to these other two DNA-containing cellular compartments.

Horizontal gene transfer in eukaryotic evolution

2008 ◽  
Vol 9 (8) ◽  
pp. 605-618 ◽  
Author(s):  
Patrick J. Keeling ◽  
Jeffrey D. Palmer
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Eukaryotic Evolution

Role of Horizontal Gene Transfer in Evolution of the Plant Genome

2019 ◽  
pp. 291-314
Author(s):  
Nageswara Rao Reddy Neelapu ◽  
Malay Ranjan Mishra ◽  
Titash Dutta ◽  
Surekha Challa
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Plant Genome

Prediction of horizontal gene transfers in eukaryotes: approaches and challenges

2009 ◽  
Vol 37 (4) ◽  
pp. 792-795 ◽  
Author(s):  
John W. Whitaker ◽  
Glenn A. McConkey ◽  
David R. Westhead
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Present Review ◽  
Bacterial Evolution ◽  
Eukaryotic Evolution ◽  
Metabolic Evolution ◽  
Eukaryotic Genomes

HGT (horizontal gene transfer) is recognized as an important force in bacterial evolution. Now that many eukaryotic genomes have been sequenced, it has become possible to carry out studies of HGT in eukaryotes. The present review compares the different approaches that exist for identifying HGT genes and assess them in the context of studying eukaryotic evolution. The metabolic evolution resource metaTIGER is then described, with discussion of its application in identification of HGT in eukaryotes.

The role of horizontal gene transfer in the evolution of trophic mechanisms across the eukaryotes

2009 ◽  
Vol 153 (2) ◽  
pp. S165
Author(s):  
Tom Richards ◽  
Darren M. Soanes ◽  
Peter G. Foster ◽  
Guy Leonard ◽  
Nicholas J. Talbot
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer
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