Microbial Invasions: The Process, Patterns, and Mechanisms

Mallon, Cyrus A.; Elsas, Jan Dirk van; Salles, Joana Falcão

doi:10.1016/j.tim.2015.07.013

Cited by 372 publications

(403 citation statements)

References 95 publications

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“…Whatever the origins of these Enterobacter strains, plant, or human, from the point of view of an invader the alien bacteria must be able to exchange genetic material with the native microbiome (Mallon et al, 2015). Perhaps interactions with native phages may facilitate this process, especially if one considers the importance of phage-mediated HGT and the high rates of HGT that are likely to be more frequent (25-fold) between members of same microbiome than between members from different microbiomes (Soucy et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Bacterial Diversification in the Light of the Interactions with Phages: The Genetic Symbionts and Their Role in Ecological Speciation

et al. 2018

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Phages have a major impact on microbial populations. In this work, we discuss how predation, transduction, lysogeny, and phage domestication lead to symbio-centric genomic interactions between bacteria and phages, ranging from antagonistic to mutualistic. Furthermore, these interactions influence bacterial diversification and ecotype formation. We then propose an additional consideration in the form of a symbio-centric ecological speciation framework for bacteria. Our framework builds upon classical morphological and molecular taxonomy by also considering bacteria and their phages as a unit of evolutionary selection. This framework acknowledges the considerable effect that phage interaction has on bacterial genomic content, regulation, and evolution, and will advance our understanding of bacterial evolution.

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Section: Resultsmentioning

confidence: 99%

Bacterial Diversification in the Light of the Interactions with Phages: The Genetic Symbionts and Their Role in Ecological Speciation

et al. 2018

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“…A few reviews have adopted this invasion biology framework to examine microbial invasion (Litchman, 2010;Amalfitano et al, 2014), but noted that our incomplete knowledge of microbial biogeography makes it difficult to assess whether a microbial type has dispersed beyond its natural range. Other authors propose that a microbial type only qualifies as an invader if it enters 'an environment or community where it has never before existed' (Mallon et al, 2015b). This absolute, continuous, absence from the resident community is difficult to demonstrate for most communities.…”

Section: Defining and Detecting Invasion In Microbial Communitiesmentioning

confidence: 99%

“…Nonetheless, efforts toward a unified framework for invasion biology have been made (Blackburn et al, 2011). Similar controversies can affect the more recent field of microbial invasion-and the need to develop a general framework for microbial invasion, within which to synthesize individual observations, has been voiced before (Litchman, 2010;Mallon et al, 2015b).…”

Section: Introductionmentioning

confidence: 99%

A conceptual framework for invasion in microbial communities

et al. 2016

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There is a growing interest in controlling-promoting or avoiding-the invasion of microbial communities by new community members. Resource availability and community structure have been reported as determinants of invasion success. However, most invasion studies do not adhere to a coherent and consistent terminology nor always include rigorous interpretations of the processes behind invasion. Therefore, we suggest that a consistent set of definitions and a rigorous conceptual framework are needed. We define invasion in a microbial community as the establishment of an alien microbial type in a resident community and argue how simple criteria to define aliens, residents, and alien establishment can be applied for a wide variety of communities. In addition, we suggest an adoption of the community ecology framework advanced by Vellend (2010) to clarify potential determinants of invasion. This framework identifies four fundamental processes that control community dynamics: dispersal, selection, drift and diversification. While selection has received ample attention in microbial community invasion research, the three other processes are often overlooked. Here, we elaborate on the relevance of all four processes and conclude that invasion experiments should be designed to elucidate the role of dispersal, drift and diversification, in order to obtain a complete picture of invasion as a community process.

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“…Salmonella, for example, was shown to survive in soil for more than 200 days if the soil was fertilized [21,22]. The survival of diverse bacteria newly introduced into soil has been subject of research for many years [23], and the mechanisms that govern this process, compared often to microbial invasion, were described in many studies (recently reviewed by [24]). In order to survive in the soil, HPs need to ind an adequate ecological niche in which they can establish.…”

Section: Contamination Of Fresh Producementioning

confidence: 99%

“…In the soil ecosystem, Salmonella has to compete with the indigenous microbial community for space and nutrients [24]. For example, it was shown that Salmonella enterica serovar Newport (S. Newport) survived about 10 weeks longer in sterilized soil compared to nonsterilized manure-amended soil [22].…”

Section: Current Topics In Salmonella and Salmonellosis 174mentioning

confidence: 99%

Interaction between Salmonella and Plants: Potential Hosts and Vectors for Human Infection

Fornefeld¹,

Schierstaedt²,

Jechalke³

et al. 2017

Current Topics in Salmonella and Salmonellosis

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Fruits and vegetables are important for a healthy diet. However, when eaten raw and contaminated with human pathogens (HPs) they may cause a disease outbreak. Contamination with HPs can occur along the entire farm-to-fork production chain and Salmonella enterica is one of the most common foodborne pathogens. A range of biotic and abiotic environmental factors can inluence the complex interactions between Salmonella and plants. Moreover, the outcome of experiments largely depends on the experimental design and parameters or methods employed, and on top, on the accompanying plant microbiome and the genetic equipment of the plant and the Salmonella strain. Particularly mobile genetic elements contribute to the diversiication and adaptation of Salmonella to the plant environment. So far, litle is known about the key processes and factors inluencing the atachment and potential internalization of Salmonella in plants and the plant speciic responses. It is therefore important to beter understand the ecology of Salmonella in the soil and plant environment, in order to propose practicable recommendations for prevention of foodborne diseases. This also requires improved sensitivity and speciicity of detection methods. In this chapter, we present the current knowledge, research needs, and methodology regarding the complex interactions between Salmonella and plants.

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Microbial Invasions: The Process, Patterns, and Mechanisms

Cited by 372 publications

References 95 publications

Bacterial Diversification in the Light of the Interactions with Phages: The Genetic Symbionts and Their Role in Ecological Speciation

Bacterial Diversification in the Light of the Interactions with Phages: The Genetic Symbionts and Their Role in Ecological Speciation

A conceptual framework for invasion in microbial communities

Interaction between Salmonella and Plants: Potential Hosts and Vectors for Human Infection

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