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Journal articles on the topic 'Mutualism-parasitism continuum'

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1

Matthews, Andrew C., Lauri Mikonranta, and Ben Raymond. "Shifts along the parasite–mutualist continuum are opposed by fundamental trade-offs." Proceedings of the Royal Society B: Biological Sciences 286, no. 1900 (2019): 20190236. http://dx.doi.org/10.1098/rspb.2019.0236.

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Theory suggests that symbionts can readily evolve more parasitic or mutualistic strategies with respect to hosts. However, many symbionts have stable interactions with hosts that improve nutrient assimilation or confer protection from pathogens. We explored the potential for evolution of increased parasitism or decreased parasitism and mutualism in a natural gut symbiosis between larvae of Plutella xylostella and the microbe Enterobacter cloacae. We focused on interactions with the pathogen, Bacillus thuringiensis : selecting for parasitism in terms of facilitating pathogen infection, or incre
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2

JOHNSON, N. C., J. H. GRAHAM, and F. A. SMITH. "Functioning of mycorrhizal associations along the mutualism-parasitism continuum." New Phytologist 135, no. 4 (1997): 575–85. http://dx.doi.org/10.1046/j.1469-8137.1997.00729.x.

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3

Regus, J. U., K. A. Gano, A. C. Hollowell, V. Sofish, and J. L. Sachs. "Lotus hosts delimit the mutualism-parasitism continuum of Bradyrhizobium." Journal of Evolutionary Biology 28, no. 2 (2015): 447–56. http://dx.doi.org/10.1111/jeb.12579.

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4

EWALD, PAUL W. "Transmission Modes and Evolution of the Parasitism-Mutualism Continuum." Annals of the New York Academy of Sciences 503, no. 1 Endocytobiolo (1987): 295–306. http://dx.doi.org/10.1111/j.1749-6632.1987.tb40616.x.

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5

Fesel, Philipp H., and Alga Zuccaro. "Dissecting endophytic lifestyle along the parasitism/mutualism continuum in Arabidopsis." Current Opinion in Microbiology 32 (August 2016): 103–12. http://dx.doi.org/10.1016/j.mib.2016.05.008.

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6

Harrison, Ellie, David Guymer, Andrew J. Spiers, Steve Paterson, and Michael A. Brockhurst. "Parallel Compensatory Evolution Stabilizes Plasmids across the Parasitism-Mutualism Continuum." Current Biology 25, no. 15 (2015): 2034–39. http://dx.doi.org/10.1016/j.cub.2015.06.024.

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7

Smith, F. Andrew, and Sally E. Smith. "How useful is the mutualism-parasitism continuum of arbuscular mycorrhizal functioning?" Plant and Soil 363, no. 1-2 (2013): 7–18. http://dx.doi.org/10.1007/s11104-012-1583-y.

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8

Jones, Melanie D., and Sally E. Smith. "Exploring functional definitions of mycorrhizas: Are mycorrhizas always mutualisms?" Canadian Journal of Botany 82, no. 8 (2004): 1089–109. http://dx.doi.org/10.1139/b04-110.

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Mycorrhizas are considered to be classic mutualisms. Here, we define mutualism as a reciprocal increase in fitness of the symbionts, and we review the evidence for mycorrhizal mutualism at the community, whole-plant, and cellular scales. It is difficult to use results of most mycorrhizal studies because (i) fungal contribution to nutrient uptake is not accurately estimated, (ii) increased growth is not necessarily correlated with increased plant fecundity or survival, especially in communities, and (iii) benefits that occur only at certain times of year, or under specific extreme conditions, m
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9

Karst, Justine, Laurie Marczak, Melanie D. Jones, and Roy Turkington. "THE MUTUALISM–PARASITISM CONTINUUM IN ECTOMYCORRHIZAS: A QUANTITATIVE ASSESSMENT USING META-ANALYSIS." Ecology 89, no. 4 (2008): 1032–42. http://dx.doi.org/10.1890/07-0823.1.

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10

Khan, Amjad, Alita R. Burmeister, and Lindi M. Wahl. "Evolution along the parasitism-mutualism continuum determines the genetic repertoire of prophages." PLOS Computational Biology 16, no. 12 (2020): e1008482. http://dx.doi.org/10.1371/journal.pcbi.1008482.

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Integrated into their bacterial hosts’ genomes, prophage sequences exhibit a wide diversity of length and gene content, from highly degraded cryptic sequences to intact, functional prophages that retain a full complement of lytic-function genes. We apply three approaches—bioinformatics, analytical modelling and computational simulation—to understand the diverse gene content of prophages. In the bioinformatics work, we examine the distributions of over 50,000 annotated prophage genes identified in 1384 prophage sequences, comparing the gene repertoires of intact and incomplete prophages. These
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11

Skelton, James, Sam Doak, Meredith Leonard, Robert P. Creed, and Bryan L. Brown. "The rules for symbiont community assembly change along a mutualism–parasitism continuum." Journal of Animal Ecology 85, no. 3 (2016): 843–53. http://dx.doi.org/10.1111/1365-2656.12498.

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12

Neuhauser, Claudia, and Joseph E. Fargione. "A mutualism–parasitism continuum model and its application to plant–mycorrhizae interactions." Ecological Modelling 177, no. 3-4 (2004): 337–52. http://dx.doi.org/10.1016/j.ecolmodel.2004.02.010.

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13

Egger, Keith N., and David S. Hibbett. "The evolutionary implications of exploitation in mycorrhizas." Canadian Journal of Botany 82, no. 8 (2004): 1110–21. http://dx.doi.org/10.1139/b04-056.

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Some views of mutualism, where the fitness of two symbiotic partners is higher in association than when apart, assume that they necessarily evolve towards greater benefit for the partners. Most mutualisms, however, seem prone to conflicts of interest that destabilize the partnership. These conflicts arise in part because mutualistic outcomes are conditional, depending upon complex interactions between environmental, developmental, and genotypic factors. Mutualisms are also subject to exploitation or cheating. Although various compensating mechanisms have been proposed to explain how mutualism
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14

Herrera, Paul, Lisa Schuster, Cecilia Wentrup, et al. "Molecular causes of an evolutionary shift along the parasitism–mutualism continuum in a bacterial symbiont." Proceedings of the National Academy of Sciences 117, no. 35 (2020): 21658–66. http://dx.doi.org/10.1073/pnas.2005536117.

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Symbiosis with microbes is a ubiquitous phenomenon with a massive impact on all living organisms, shaping the world around us today. Theoretical and experimental studies show that vertical transmission of symbionts leads to the evolution of mutualistic traits, whereas horizontal transmission facilitates the emergence of parasitic features. However, these studies focused on phenotypic data, and we know little about underlying molecular changes at the genomic level. Here, we combined an experimental evolution approach with infection assays, genome resequencing, and global gene expression analysi
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15

Lin, Derek, and Britt Koskella. "Friend and foe: factors influencing the movement of the bacteriumHelicobacter pylorialong the parasitism-mutualism continuum." Evolutionary Applications 8, no. 1 (2014): 9–22. http://dx.doi.org/10.1111/eva.12231.

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16

Delaux, Pierre-Marc, and Sebastian Schornack. "Plant evolution driven by interactions with symbiotic and pathogenic microbes." Science 371, no. 6531 (2021): eaba6605. http://dx.doi.org/10.1126/science.aba6605.

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During 450 million years of diversification on land, plants and microbes have evolved together. This is reflected in today’s continuum of associations, ranging from parasitism to mutualism. Through phylogenetics, cell biology, and reverse genetics extending beyond flowering plants into bryophytes, scientists have started to unravel the genetic basis and evolutionary trajectories of plant-microbe associations. Protection against pathogens and support of beneficial, symbiotic, microorganisms are sustained by a blend of conserved and clade-specific plant mechanisms evolving at different speeds. W
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17

Harrower, Jennifer T., and Gregory S. Gilbert. "Parasitism to mutualism continuum for Joshua trees inoculated with different communities of arbuscular mycorrhizal fungi from a desert elevation gradient." PLOS ONE 16, no. 8 (2021): e0256068. http://dx.doi.org/10.1371/journal.pone.0256068.

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Most desert plants form symbiotic relationships with arbuscular mycorrhizal fungi (AMF), yet fungal identity and impacts on host plants remain largely unknown. Despite widespread recognition of the importance of AMF relationships for plant functioning, we do not know how fungal community structure changes across a desert climate gradient, nor the impacts of different fungal communities on host plant species. Because climate change can shape the distribution of species through effects on species interactions, knowing how the ranges of symbiotic partners are geographically structured and the out
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18

Miller, Jacob W., Colleen R. Bocke, Andrew R. Tresslar, Emily M. Schniepp, and Susanne DiSalvo. "Paraburkholderia Symbionts Display Variable Infection Patterns That Are Not Predictive of Amoeba Host Outcomes." Genes 11, no. 6 (2020): 674. http://dx.doi.org/10.3390/genes11060674.

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Symbiotic interactions exist within a parasitism to mutualism continuum that is influenced, among others, by genes and context. Dynamics of intracellular invasion, replication, and prevalence may underscore both host survivability and symbiont stability. More infectious symbionts might exert higher corresponding costs to hosts, which could ultimately disadvantage both partners. Here, we quantify infection patterns of diverse Paraburkholderia symbiont genotypes in their amoeba host Dictyostelium discoideum and probe the relationship between these patterns and host outcomes. We exposed D. discoi
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19

Wahl, Anne-Lena, and Thomas Spiegelberger. "Arbuscular mycorrhizal fungi in changing mountain grassland ecosystems: a challenge for research." Botany 94, no. 6 (2016): 435–58. http://dx.doi.org/10.1139/cjb-2015-0255.

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Even though arbuscular mycorrhizal fungi (AMF) are present from foothills to all alpine habitats, research on their role in mountain ecosystems remains incomplete. Here we provide a literature review of the ecology and functioning of AMF in mountain ecosystems, as well as their response to global change. We investigated how AM fungal abundance, community composition, and fungal traits are studied under field conditions and are affected by altitude, habitat patchiness, succession, host identity, seasonality, and interaction with other living organisms. The effects of climate change, nutrient en
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20

Grünig, Christoph R., Valentin Queloz, Thomas N. Sieber, and Ottmar Holdenrieder. "Dark septate endophytes (DSE) of the Phialocephala fortinii s.l. – Acephala applanata species complex in tree roots: classification, population biology, and ecology." Botany 86, no. 12 (2008): 1355–69. http://dx.doi.org/10.1139/b08-108.

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Dark septate endophytes (DSE), a diverse group of ascomycetes, are dominant root colonizers in many ecosystems. The most frequent DSE in natural forest ecosystems in the Northern hemisphere belong to the Phialocephala fortinii s.l. – Acephala applanata species complex (PAC). Recently, species rank was assigned to seven cryptic species (CSP) of P. fortinii s.l.: Phialocephala fortinii s. str. C.J.K. Wang & H.E. Wilcox, Phialocephala europaea C.R. Grünig et T.N. Sieber, Phialocephala helvetica C.R. Grünig et T.N. Sieber, Phialocephala letzii C.R. Grünig et T.N. Sieber, Phialocephala subalpin
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21

Brown, Bryan L., Matthew Turnbull, James Skelton, and Robert P. Creed. "Distribution and Conservation Status of the Crayfish Fauna of South Carolina, USA." Freshwater Crayfish 22, no. 1 (2016): 43–51. http://dx.doi.org/10.5869/fc.2016.v22-1.43.

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Abstract Recent studies have revealed integral and complex relationships between hosts and their symbionts. Some of these findings demonstrate that symbionts can affect the gene expression of their hosts. We used a model cleaning symbiosis system of crayfish and their branchiobdellidan symbionts to examine whether symbionts could affect host gene expression through indirect means, by changing the interaction of the host crayfish with the environment. Previous research has shown this symbiosis to be a complex, context dependent relationship in which outcomes can shift between mutualism, when br
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22

Rogalski, Mary A., Tara Stewart Merrill, Camden D. Gowler, Carla E. Cáceres, and Meghan A. Duffy. "Context-Dependent Host-Symbiont Interactions: Shifts along the Parasitism-Mutualism Continuum." American Naturalist, September 9, 2021, 000. http://dx.doi.org/10.1086/716635.

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23

Bavestrello, Giorgio. "COMPETIZIONE E COOPERAZIONE NELLE STORIE VITALI DEGLI ORGANISMI MARINI." Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze, April 17, 2020. http://dx.doi.org/10.4081/scie.2017.599.

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Direct and indirect biotic interactions driving community structure, can be positive, increasing the fitness of both partners, or negative, increasing the fitness of only one of the participant to the interaction. Moreover, both partners may produce an integration among them, thus giving rise to an association defined as symbiosis, with parasitism and mutualism as the two extremes of a symbiotic continuum. In the past, negative interactions have been considered more widespread within communities and responsible for most of their structures. By contrast, cooperative interactions have mainly app
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24

Li, Erqin, Ronnie de Jonge, Chen Liu, et al. "Rapid evolution of bacterial mutualism in the plant rhizosphere." Nature Communications 12, no. 1 (2021). http://dx.doi.org/10.1038/s41467-021-24005-y.

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AbstractWhile beneficial plant-microbe interactions are common in nature, direct evidence for the evolution of bacterial mutualism is scarce. Here we use experimental evolution to causally show that initially plant-antagonistic Pseudomonas protegens bacteria evolve into mutualists in the rhizosphere of Arabidopsis thaliana within six plant growth cycles (6 months). This evolutionary transition is accompanied with increased mutualist fitness via two mechanisms: (i) improved competitiveness for root exudates and (ii) enhanced tolerance to the plant-secreted antimicrobial scopoletin whose product
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