Horizontal Gene Transfer: A Universal Phenomenon

Panoff, Jean-Michel; Chuiton, Céline

doi:10.1080/10807030490513928

Cited by 12 publications

(12 citation statements)

References 16 publications

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“…Davison, 1999;Panoff & Chuiton, 2004;Kelly et al, 2009;Kuo &Ochman, 2008 andreferences therein, Sobecky &Hazen, 2009). new microbial 'species').…”

Section: The Generation Of New Diversitymentioning

confidence: 99%

“…The acquisition of new genes by horizontal transfer can more easily explain the capacity of bacteria to exploit new and or changing environments and respond to new selective pressures, than can sequential modification of gene function by the accumulation of point mutations (e.g. Davison, 1999;Panoff & Chuiton, 2004;Kelly et al, 2009;Kuo &Ochman, 2008 andreferences therein, Sobecky &Hazen, 2009). In Brüssow et al's (2004) review, they proposed that horizontal gene transfer can be regarded as a fast mode of evolution (timescale of years to decades) where new sets of genes are acquired by transduction, transposition, transformation and lysogenization with phages.…”

Section: The Generation Of New Diversitymentioning

confidence: 99%

“…Genomic recombination and the presence of mobile genetic elements leading to gene rearrangements and insertions ⁄ deletions, appear to be ubiquitous (Kelly et al, 2009) and universal (e.g. Bertolla & Simonet, 1999;Dobrindt et al, 2004;Panoff & Chuiton, 2004;Marcobal et al, 2006). Increased contact between dense populations existing in close proximity favors genetic exchange between microbial cells (Scott, 2002;Salyers et al, 2004;McCuddin et al, 2006;Kelly et al, 2009) through a diversity of mechanisms including conjugation, transformation and phage transduction.…”

Section: The Generation Of New Diversitymentioning

confidence: 99%

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Fluidized muds: a novel setting for the generation of biosphere diversity through geologic time*

Aller

Kemp

et al. 2010

Geobiology

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Reworked and fluidized fine-grained deposits in energetic settings are a major modern-day feature of river deltas and estuaries. Similar environments were probably settings for microbial evolution on the early Earth. These sedimentary systems act as efficient biogeochemical reactors with high bacterial phylogenetic diversity and functional redundancy. They are temporally rather than spatially structured, with repeated cycling of redox conditions and successive stages of microbial metabolic processes. Intense reworking of the fluidized bed entrains bacteria from varied habitats providing new, diverse genetic materials to contribute to horizontal gene transfer events and the creation of new bacterial ecotypes. These vast mud environments may act as exporters and promoters of biosphere diversity and novel adaptations, potentially on a globally important scale.

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“…Davison, 1999;Panoff & Chuiton, 2004;Kelly et al, 2009;Kuo &Ochman, 2008 andreferences therein, Sobecky &Hazen, 2009). new microbial 'species').…”

Section: The Generation Of New Diversitymentioning

confidence: 99%

Section: The Generation Of New Diversitymentioning

confidence: 99%

Section: The Generation Of New Diversitymentioning

confidence: 99%

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Fluidized muds: a novel setting for the generation of biosphere diversity through geologic time*

Aller

Kemp

et al. 2010

Geobiology

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“…Horizontal gene transfer is thought to be a major force in bacterial evolution (4,13,16,36,45,62), and comparative genomic studies have provided numerous examples of likely horizontal transfer events (45,47). Some selective advantage, such as antibiotic or heavy metal resistance, is thought to be important in the establishment of populations carrying the transferred genes (2,35,40,41,50,51,55,70).…”

mentioning

confidence: 99%

In Planta Horizontal Transfer of a Major Pathogenicity Effector Gene

Yacoubi

Brunings

Yuan

et al. 2007

Appl Environ Microbiol

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Xanthomonas citri pv. citri is a clonal group of strains that causes citrus canker disease and appears to have originated in Asia. A phylogenetically distinct clonal group that causes identical disease symptoms on susceptible citrus, X. citri pv. aurantifolii, arose more recently in South America. Genomes of X. citri pv. aurantifolii strains carry two DNA fragments that hybridize to pthA, an X. citri pv. citri gene which encodes a major type III pathogenicity effector protein that is absolutely required to cause citrus canker. Marker interruption mutagenesis and complementation revealed that X. citri pv. aurantifolii strain B69 carried one functional pthA homolog, designated pthB, that was required to cause cankers on citrus. Gene pthB was found among 38 open reading frames on a 37,106-bp plasmid, designated pXcB, which was sequenced and annotated. No additional pathogenicity effectors were found on pXcB, but 11 out of 38 open reading frames appeared to encode a type IV transfer system. pXcB transferred horizontally in planta, without added selection, from B69 to a nonpathogenic X. citri pv. citri (pthA::Tn5) mutant strain, fully restoring canker. In planta transfer efficiencies were very high (>0.1%/recipient) and equivalent to those observed for agar medium with antibiotic selection, indicating that pthB conferred a strong selective advantage to the recipient strain. A single pathogenicity effector that can confer a distinct selective advantage in planta may both facilitate plasmid survival following horizontal gene transfer and account for the origination of phylogenetically distinct groups of strains causing identical disease symptoms.The genus Xanthomonas is comprised of strains that exhibit a high level of host specificity; over 125 different pathogenic variants (pathovars) of X. campestris that differ primarily in host range have been described (29). Host specificity in Xanthomonas can be due to gene-for-gene interactions involving avirulence genes that act in a negative fashion to limit host range (18,29,38) but also can be due to positive acting pathogenicity factors that condition host range in a host-specific manner, e.g., pthN and avrb6 of X. campestris pv. malvacearum (6, 70), opsX of X. campestris pv. citrumelo (32), and pthA of X. citri (60, 61).A highly clonal population structure is typical of many Xanthomonas pathovars that cause serious diseases (22). Surprisingly, some pathovars are comprised of clonal groups that are phylogenetically distinct but have similar or identical host ranges and cause identical disease symptoms. Examples of this phenomenon are observed for (i) common bean blight, caused by two major groups of strains within X. campestris pv. phaseoli that are only 20% related by DNA-DNA hybridization (28); (ii) bacterial spot of tomato and pepper, caused by two major groups of strains within X. campestris pv. vesicatoria (30) that are less than 50% related by DNA-DNA hybridization (53); and (iii) citrus canker disease, caused by two major groups of strains within X. citri (5) that a...

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“…However, sexuality, in its most formal definition, does not exist in bacteria. Thus, in these microorganisms, and in contrast to organisms known as "higher" forms, the cohesion of each species is ensured by the pressure of the environment in which it lives, and not by sexuality 13) but recombination can occur through different mechanisms including Horizontal Gene Transfer 41) . (3) Epigenetic adaptation Epigenetic adaptation (reversible and "heritable") is a phenotypic modification that is transmitted over generations even when the conditions that gave rise to it are no longer present 24,50) .…”

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confidence: 99%

Response to Environmental Stress as a Global Phenomenon in Biology: the Example of Microorganisms

et al. 2008

Self Cite

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Any modification of the environment that leads to a physiological, genetic, or epigenetic adaptive response in microorganisms may be considered as a stress. Historically, forms of stresses affecting biological structures were classified either as non-thermal, such as osmotic, oxidative, or acid stress or as thermal stress, hot or cold. Currently, the classification in biology is as abiotic, including physical and chemical stress, or biotic. The aim of this mini-review is to show, through the example of microorganisms, that the response to stress can be considered, in biology, as a global phenomenon, which can be extended to anthropogenic pressure.

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Horizontal Gene Transfer: A Universal Phenomenon

Cited by 12 publications

References 16 publications

Fluidized muds: a novel setting for the generation of biosphere diversity through geologic time*

Fluidized muds: a novel setting for the generation of biosphere diversity through geologic time*

In Planta Horizontal Transfer of a Major Pathogenicity Effector Gene

Response to Environmental Stress as a Global Phenomenon in Biology: the Example of Microorganisms

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