Hosts, parasites, and horizontal gene transfer

Wijayawardena, Bhagya K.; Minchella, Dennis J.; DeWoody, J. Andrew

doi:10.1016/j.pt.2013.05.001

Cited by 65 publications

(46 citation statements)

References 97 publications

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“…R. Soc. B 281: 20132450 the hosts and vice versa, and cases of transfers from metazoans to unicellular eukaryotes and other metazoans and from unicellular eukaryotes to metazoans has been reviewed recently by Wijayawardena et al [75]. Acquisition of insect genes by P. pacificus [30] discussed above in this review can be a good example of these transfers.…”

Section: Discussionmentioning

confidence: 81%

Horizontal gene transfer in the acquisition of novel traits by metazoans

2014

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Horizontal gene transfer is accepted as an important evolutionary force modulating the evolution of prokaryote genomes. However, it is thought that horizontal gene transfer plays only a minor role in metazoan evolution. In this paper, I critically review the rising evidence on horizontally transferred genes and on the acquisition of novel traits in metazoans. In particular, I discuss suspected examples in sponges, cnidarians, rotifers, nematodes, molluscs and arthropods which suggest that horizontal gene transfer in metazoans is not simply a curiosity. In addition, I stress the scarcity of studies in vertebrates and other animal groups and the importance of forthcoming studies to understand the importance and extent of horizontal gene transfer in animals.

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Section: Discussionmentioning

confidence: 81%

Horizontal gene transfer in the acquisition of novel traits by metazoans

2014

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“…Horizontal transfer of functional genes and transposable elements between genomes of parasitic fungi and their hosts has already been documented for plant-associated species (Wijayawardena et al 2013;Qiu et al 2016), as well as for fungi and bacteria (Richards et al 2011;Lacroix and Citovsky 2016). HGT is currently known to be more common than earlier assumed, as well as highly important in fungal evolution (Richards et al 2011;Fitzpatrick 2012;Qiu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

The plasticity of fungal interactions

Wrzosek

Ruszkiewicz‐Michalska

Sikora

et al. 2016

Mycol Progress

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Their hyphal structure, the common events of hybridization and horizontal gene transfer, as well as intimate associations with prokaryotes (including endobiotic bacteria) and cooperation with eukaryotes have made fungi very flexible at the genetic, physiological, and ecological levels. It is manifested with the fungal ability to perfectly exploit existing nutrient sources and plastically fit into a changing environment. Although the links between fungi and other ecosystem components are rarely clearly visible and unambiguous, fungi can be ecosystem buffers playing a homeostatic role throughout global ecosystems, reacting to changes in various ways, not only by modifications of gene expression but also by nuclear status and Bextended phenotype^. The goal of this review is to underline some ecological interactions involving fungi and other organisms and to indicate high fungal plasticity in terms of ontogenetic perspective.

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“…These events can introduce conflicting phylogenetic signals between genes that have been vertically inherited versus horizontally acquired (8). The possibility of infection of a single host plant by multiple species may increase the probability of genetic exchange (9). Coinfection by multiple species may be more common as pathogens are moved out of their native geographic ranges.…”

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confidence: 99%

Multilocus Sequence Analysis of Xanthomonads Causing Bacterial Spot of Tomato and Pepper Plants Reveals Strains Generated by Recombination among Species and Recent Global Spread of Xanthomonas gardneri

Timilsina

Jibrin

Potnis

et al. 2015

Appl Environ Microbiol

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h Four Xanthomonas species are known to cause bacterial spot of tomato and pepper, but the global distribution and genetic diversity of these species are not well understood. A collection of bacterial spot-causing strains from the Americas, Africa, Southeast Asia, and New Zealand were characterized for genetic diversity and phylogenetic relationships using multilocus sequence analysis of six housekeeping genes. By examining strains from different continents, we found unexpected phylogeographic patterns, including the global distribution of a single multilocus haplotype of X. gardneri, possible regional differentiation in X. vesicatoria, and high species diversity on tomato in Africa. In addition, we found evidence of multiple recombination events between X. euvesicatoria and X. perforans. Our results indicate that there have been shifts in the species composition of bacterial spot pathogen populations due to the global spread of dominant genotypes and that recombination between species has generated genetic diversity in these populations. Understanding the evolution and host specificity of plantpathogenic bacteria is an ongoing challenge. Strains of phytopathogenic bacteria commonly exhibit high host specificity, with host ranges restricted to one or a few plant species (1, 2). Bacterial plant pathogens also exhibit biogeography, such that species can be limited in their geographic distributions (3). Globalization of agriculture has contributed to the dispersal of phytopathogenic bacteria, but the geographic ranges of species are not well characterized, in part because of the difficulty in differentiating phylogenetically distinct strains that have similar host specificities (4). Phenotypic characters can sometimes distinguish species with similar host specificities, but classification by molecular markers is often required due to variation in phenotypic traits within species (5). Phenotypes can also dramatically differ among strains within a species due to acquisition and loss of genes related to pathogenicity and fitness (4). Bacterial evolution is driven by point mutations, variation in gene content, recombination, and selection on the resulting phenotypes (6). Phylogenetic relationships among species are defined by point mutations in the genome that accumulate over time; however, these relationships can be obscured by polymorphisms that have been distributed to other closely related species via homologous recombination and horizontal gene transfer (7). These events can introduce conflicting phylogenetic signals between genes that have been vertically inherited versus horizontally acquired (8). The possibility of infection of a single host plant by multiple species may increase the probability of genetic exchange (9). Coinfection by multiple species may be more common as pathogens are moved out of their native geographic ranges.Multilocus nucleotide-sequence-based approaches help in resolving phylogenetic relationships of bacteria within and between species (10). Multilocus sequence typing (MLST) and analysis...

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Hosts, parasites, and horizontal gene transfer

Cited by 65 publications

References 97 publications

Horizontal gene transfer in the acquisition of novel traits by metazoans

Horizontal gene transfer in the acquisition of novel traits by metazoans

The plasticity of fungal interactions

Multilocus Sequence Analysis of Xanthomonads Causing Bacterial Spot of Tomato and Pepper Plants Reveals Strains Generated by Recombination among Species and Recent Global Spread of Xanthomonas gardneri

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