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Journal articles on the topic 'Natural colonization'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Yadav, Mukesh Kumar, Seok-Won Park, Sung-Won Chae, and Jae-Jun Song. "Sinefungin, a Natural Nucleoside Analogue of S-Adenosylmethionine, InhibitsStreptococcus pneumoniaeBiofilm Growth." BioMed Research International 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/156987.

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Pneumococcal colonization and disease is often associated with biofilm formation, in which the bacteria exhibit elevated resistance both to antibiotics and to host defense systems, often resulting in infections that are persistent and difficult to treat. We evaluated the effect of sinefungin, a nucleoside analogue of S-adenosylmethionine, on pneumococcalin vitrobiofilm formation andin vivocolonization. Sinefungin is bacteriostatic to pneumococci and significantly decreased biofilm growth and inhibited proliferation and structure of actively growing biofilms but did not alter growth or the matr

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2

Peckarsky, Barbara L. "Colonization of Natural Substrates by Stream Benthos." Canadian Journal of Fisheries and Aquatic Sciences 43, no. 3 (1986): 700–709. http://dx.doi.org/10.1139/f86-085.

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Natural substrates in mesh cages in a Tompkins County, New York, woodland stream were colonized by benthic invertebrates for periods of 3, 6, 9, 12, 18, 24, 30, and 42 d during autumn 1980. An experiment was designed for the purpose of distinguishing seasonal phenology from site-specific temporal (nonseasonal) succession of colonizers. Subsequent to initial colonization, patterns of species dominance were analyzed to develop hypotheses on the potential for biological interactions as explanations for observed patterns of species succession. Total benthos and species richness increased significa

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3

Axelrood, Paige E., William K. Chapman, Keith A. Seifert, David B. Trotter, and Gwen Shrimpton. "Cylindrocarpon and Fusarium root colonization of Douglas-fir seedlings from British Columbia reforestation sites." Canadian Journal of Forest Research 28, no. 8 (1998): 1198–206. http://dx.doi.org/10.1139/x98-080.

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Poor performance of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) plantations established in 1987 has occurred in southwestern British Columbia. Affected sites were planted with 1-year-old container stock that exhibited some root dieback in the nursery. A study was initiated in 1991 to assess Cylindrocarpon and Fusarium root infection in planted and naturally regenerating (natural) Douglas-fir seedlings from seven affected plantations. Percentages of seedlings harboring Cylindrocarpon spp.and percent root colonization were significantly greater for planted seedlings compared with natural

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4

Zola, Tracey A., Elena S. Lysenko, and Jeffrey N. Weiser. "Natural Antibody to Conserved Targets of Haemophilus influenzae Limits Colonization of the Murine Nasopharynx." Infection and Immunity 77, no. 8 (2009): 3458–65. http://dx.doi.org/10.1128/iai.01564-08.

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ABSTRACT Nasopharyngeal colonization represents the initial interaction between Haemophilus influenzae and its human host. Factors that influence bacterial carriage likely affect transmission and incidence of infection. Therefore, we investigated host factors involved in limiting H. influenzae colonization in BALB/c mice, as colonization can be established in this genetic background. Unlike what is observed in the C57BL/6 background, initial colonization of BALB/c mice was mainly limited by adaptive immune components. This effect on colonization did not require either CD4- or CD8-positive T ce

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Akinbi, O. J., S. A. Adeduntan, E. O. Toyinbo, and O. T. Alamu. "Assessment of Gmelina, Danta Solid Wood and Plywood Hive Types for Beekeeping." Journal of Applied Sciences and Environmental Management 25, no. 4 (2021): 625–29. http://dx.doi.org/10.4314/jasem.v25i4.22.

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The study was carried out to compare the performance of wood hive types and plywood hive types in three different vegetation types between June 2018 and May 2020 in Akure South local Government of Ondo State, Nigeria. A total of eighteen (18) Kenyan Top Bar hives made from Danta, Gmelina and plywood were constructed at six (6) each per wood types. Two (2) each of Danta, Gmelina and Plywood hives were installed in three locations: Natural Forest, Plantation forest and cocoa farmland. The rate of colonization of each hive was evaluated at 6, 12, 18 and 24 months after installation in the field.

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Bruns, D. D. "Does Reclamation by "Natural Colonization" Produce Desirable Environments?" Journal American Society of Mining and Reclamation 1986, no. 1 (1986): 45–50. http://dx.doi.org/10.21000/jasmr86010045.

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7

Doehler, Marianne, Delphine Chauvin, Anne Le Ralec, Émeline Vanespen, and Yannick Outreman. "Effect of the Landscape on Insect Pests and Associated Natural Enemies in Greenhouses Crops: The Strawberry Study Case." Insects 14, no. 3 (2023): 302. http://dx.doi.org/10.3390/insects14030302.

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Compared to open-field crops, the influence of the surrounding landscape on insect diversity in greenhouse crops has been poorly studied. Due to growing evidence of insect influx in greenhouses, identifying the landscape properties influencing the protected crop colonization by insect pests and their natural enemies would promote the improvement of both pest prevention and conservation biological control methods. Here, we present a field study on the effect of the surrounding landscape on the colonization of greenhouse crops by insect pests and associated natural enemies. By monitoring 32 gree

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Luo, Ying, Hanbing Liu, Wenjie Jia, et al. "Field Inoculation of Pleurotus tuoliensis in Natural Habitat Promotes Microbial Communities That Enhance Its Growth." Agronomy 15, no. 5 (2025): 1136. https://doi.org/10.3390/agronomy15051136.

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Pleurotus tuoliensis is a valuable edible mushroom native to Xinjiang in northwest China. It colonizes the roots and stems of Ferula plants. Field inoculation in its natural habitat has been shown to significantly enhance the colonization rate of P. tuoliensis hyphae in Ferula plants. However, the effects of field inoculation on P. tuoliensis hyphal colonization, soil properties, and microbial communities remain underexplored. In this study, we examined the characteristics of rhizosphere soil and microbial communities under four conditions: natural environments with and without hyphal coloniza

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Halász, Krisztián, Csaba Borbély, Veronika Pós, et al. "Effect of crop management and cultivar on colonization of Capsicum annuum L. by Endophytic Fungi." Acta Universitatis Sapientiae, Agriculture and Environment 8, no. 1 (2016): 5–15. http://dx.doi.org/10.1515/ausae-2016-0001.

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Abstract Due to their importance as biological control agents, we analysed the colonization of two pepper (Capsicum annuum L.) cultivars by culturable endophytic fungi in natural sandy soil in the open field and under soil-free conditions in the greenhouse, respectively. In natural soil, we observed a significant difference in colonization rates between the cultivars ‘Hó’ and ‘Kápia’. Colonization rates were always lower in the greenhouse than in the open field. Colonization was enhanced towards the end of the growing period and organ-specific differences were also observed. On the basis of co

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10

Heinken, Thilo, and Elke Zippel. "Natural re-colonization of experimental gaps by terricolous bryophytes in Central European pine forests." Nova Hedwigia 79, no. 3-4 (2004): 329–51. http://dx.doi.org/10.1127/0029-5035/2004/0079-0329.

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11

Corcoz, Larisa, Florin Păcurar, Victoria Pop-Moldovan, Ioana Vaida, Vlad Stoian, and Roxana Vidican. "Mycorrhizal Patterns in the Roots of Dominant Festuca rubra in a High-Natural-Value Grassland." Plants 11, no. 1 (2021): 112. http://dx.doi.org/10.3390/plants11010112.

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Grassland ecosystems occupy significant areas worldwide and represent a reservoir for biodiversity. These areas are characterized by oligotrophic conditions that stimulate mycorrhizal symbiotic partnerships to meet nutritional requirements. In this study, we selected Festuca rubra for its dominance in the studied mountain grassland, based on the fact that grasses more easily accept a symbiotic partner. Quantification of the entire symbiosis process, both the degree of colonization and the presence of a fungal structure, was performed using the root mycorrhizal pattern method. Analysis of data

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Koilpillai, Y., Asir Benniamin, V. Manickam, and L. Jesudoss. "Mycorrhizal association of two endemic trees of Western Ghats: Poeciloneuron pauciflorum Bedd. and Poeciloneuron indicum Bedd." Indian Journal of Forestry 30, no. 4 (2007): 455–58. http://dx.doi.org/10.54207/bsmps1000-2007-1w71v9.

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Arbuscular mycorrhizal (AM) colonization and spore density of the two endemic plants growing in the natural forests were determined. Variations in spore number and colonization rate were observed in both the plants. The most frequent fungi present in the rhizosphere were also different. The AM colonization and sporulation were influenced by pH and phosphorous content of the soil.

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13

Roghmann, Mary-Claire, Sadaf Qaiyumi, Richard Schwalbe, and J. Glenn Morris. "Natural History of Colonization with Vancomycin-Resistant Enterococcus faecium." Infection Control and Hospital Epidemiology 18, no. 10 (1997): 679–80. http://dx.doi.org/10.2307/30141505.

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Montecalvo, Marisa A., Herminia de Lencastre, Margaret Carraher, et al. "Natural History of Colonization with Vancoimycin-Resistant Enterococcus faecium." Infection Control and Hospital Epidemiology 16, no. 12 (1995): 680–85. http://dx.doi.org/10.2307/30141910.

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Montecalvo, Marisa A., Herminia de Lencastre, Margaret Carraher, et al. "Natural History of Colonization with Vancoimycin-Resistant Enterococcus faecium." Infection Control and Hospital Epidemiology 16, no. 12 (1995): 680–85. http://dx.doi.org/10.1086/647041.

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Roghmann, Mary-Claire, Sadaf Qaiyumi, Richard Schwalbe, and J. Glenn Morris. "Natural History of Colonization with Vancomycin-Resistant Enterococcus faecium." Infection Control and Hospital Epidemiology 18, no. 10 (1997): 679–80. http://dx.doi.org/10.1086/647510.

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17

Pacio, Glenn A., Paul Visintainer, George Maguire, Gary P. Wormser, John Raffalli, and Marisa A. Montecalvo. "Natural History of Colonization With Vancomycin-Resistant Enterococci, Methicillin-Resistant Staphylococcus Aureus, And Resistant Gram-Negative Bacilli Among Long-Term–Care Facility Residents." Infection Control & Hospital Epidemiology 24, no. 4 (2003): 246–50. http://dx.doi.org/10.1086/502201.

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AbstractObjective:To determine the natural history of colonization with vancomycin-resistant enterococci (VRE), methicillin-resistant Staphylococcus aureus (MRSA), and resistant gram-negative bacilli among long-term–care facility (LTCF) residents.Design:Observational cohort study.Setting:A 355-bed LTCF with a ventilator unit and a subacute unit.Participants:Residents with colonization or infection with VRE, MRSA or resistant gram-negative bacilli housed at the LTCF between December 1,1999, and February 29, 2000.Methods:Cultures of clinical and surveillance sites were performed at regular inter

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18

Caufield, Page W., Ananda P. Dasanayake, Yihong Li, Yaping Pan, Jay Hsu, and J. Michael Hardin. "Natural History of Streptococcus sanguinis in the Oral Cavity of Infants: Evidence for a Discrete Window of Infectivity." Infection and Immunity 68, no. 7 (2000): 4018–23. http://dx.doi.org/10.1128/iai.68.7.4018-4023.2000.

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ABSTRACT The heterogeneous group of oral bacteria within the sanguinis (sanguis) streptococci comprise members of the indigenous biota of the human oral cavity. While the association of Streptococcus sanguinis with bacterial endocarditis is well described in the literature, S. sanguinis is thought to play a benign, if not a beneficial, role in the oral cavity. Little is known, however, about the natural history of S. sanguinis and its specific relationship with other oral bacteria. As part of a longitudinal study concerning the transmission and acquisition of oral bacteria within mother-infant

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19

Mane, Shreya. "Moon Colonization for Human civilization: Theoretical Overview." 1 1, no. 1 (2022): 30–34. http://dx.doi.org/10.46632/ese/1/1/8.

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Space colonization or space settlement or extra-terrestrial colonization is hypothetical permanent habitation and exploitation of natural resources from outside spaceflight or operating space outputs. The primary argument calling for space colonization is the long-term survival of human civilization and terrestrial life. By developing alternative locations off Earth, the planet’s species, including humans, could live on in the event of natural or human made disasters on our own planet. Colonizing a natural body would provide an ample source of material for construction and other uses in space,

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20

Ploetz, R. C., and D. J. Mitchell. "Influence of water potential on the survival and saprophytic activity of Rhizoctonia solani AG 4 in natural soil." Canadian Journal of Botany 63, no. 12 (1985): 2364–68. http://dx.doi.org/10.1139/b85-338.

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The survival of Rhizoctonia solani AG 4 was monitored in a natural Arredondo fine sand incubated under controlled water potentials. In general, survival was greater in soils held at intermediate water potentials of −2 to −15 bars (1 bar = 100 kPa) than in moister or drier soils. Saprophytic colonization of rye stem pieces by R. solani AG 4 in artificially infested, natural soil occurred at five water potentials ranging from −0.05 to −15 bars. Colonization did not occur at −1500 bars. Maximum colonization at any of the former water potentials was detected 1 or 2 days after the beginning of an e

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Weintrob, Amy C., Mollie P. Roediger, Melissa Barber, et al. "Natural History of Colonization with Gram-Negative Multidrug-Resistant Organisms among Hospitalized Patients." Infection Control & Hospital Epidemiology 31, no. 4 (2010): 330–37. http://dx.doi.org/10.1086/651304.

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Objective.To determine the anatomic sites and natural history of colonization with gram-negative multidrug-resistant organisms (MDROs).Design.Prospective, longitudinal cohort study.Setting.Walter Reed Army Medical Center, a 236-bed tertiary care center in Washington, DC.Patients.Deployed subjects (ie, inpatients medically evacuated from Iraq or Afghanistan) or nondeployed subjects admitted to the same hospital.Methods.Consenting patients had 6 anatomic sites cultured every 3 days for 2 weeks and then weekly. Gram-negative organisms resistant to 3 or more classes of antibiotics were considered

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SCHINOR, EVANDRO H., FRANCISCO A. A. MOURÃO FILHO, CARLOS I. AGUILAR-VILDOSO, and JOAQUIM TEÓFILO SOBRINHO. "Natural colonization of leaves of 'Pêra' sweet orange and related varieties by Guignardia citricarpa." Fitopatologia Brasileira 27, no. 5 (2002): 479–83. http://dx.doi.org/10.1590/s0100-41582002000500007.

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The purpose of this research was to evaluate the differences in the colonization and production of structures in the leaves of 'Pêra' sweet orange (Citrus sinensis) clones and related varieties by Guignardia citricarpa. The natural colonization and the production of reproductive structures in the leaves and in vitro of ten 'Pêra' sweet orange was quantified in the following clones: Bianchi, Dibbern C.V., EEL, IAC 2000, Olímpia 15161, Premunizada 1212, Premunizada 1743/82, R. Gullo 1569/244, R. Gullo 1570/246 and Vimusa; and in five related varieties: Redonda C.N, Ovale 968, Ovale San Lio 969,

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Runft, Donna L., Kristie C. Mitchell, Basel H. Abuaita, et al. "Zebrafish as a Natural Host Model for Vibrio cholerae Colonization and Transmission." Applied and Environmental Microbiology 80, no. 5 (2013): 1710–17. http://dx.doi.org/10.1128/aem.03580-13.

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ABSTRACTThe human diarrheal disease cholera is caused by the aquatic bacteriumVibrio cholerae.V. choleraein the environment is associated with several varieties of aquatic life, including insect egg masses, shellfish, and vertebrate fish. Here we describe a novel animal model forV. cholerae, the zebrafish. PandemicV. choleraestrains specifically colonize the zebrafish intestinal tract after exposure in water with no manipulation of the animal required. Colonization occurs in close contact with the intestinal epithelium and mimics colonization observed in mammals. Zebrafish that are colonized b

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Lindblom, G. B., E. Sjögren, and B. Kaijser. "Natural campylobacter colonization in chickens raised under different environmental conditions." Journal of Hygiene 96, no. 3 (1986): 385–91. http://dx.doi.org/10.1017/s0022172400066146.

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SUMMARYA cross-sectional study of 447 laying hens (age range 0–65 weeks) and a longitudinal study of 164 similar birds showed thatCampylobacter jejuniwas not present in the faeces of newly hatched chicks, but that colonization arose after 5–9 weeks. A survey of 250 broilers obtained from four breeders showed that all were negative forC. jejunibefore and after slaughter at the age of 5 weeks. OnceC. jejunihad appeared in a flock, it rapidly spread to virtually all birds, but at the age of 42 weeks only 20–46% of birds remained colonized, possibly as a result of having developed immunity. Birds

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Xu, Wenlai, Ju Yang, Jing Wang, Yue Jian, and Min Tang. "Analysis of the Start-Up of Natural Bio-Film Colonization of Constructed Rapid Infiltration System." Polish Maritime Research 23, s1 (2016): 32–35. http://dx.doi.org/10.1515/pomr-2016-0043.

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Abstract this paper studied the start-up of natural bio-film colonization under the conditions where wet-to-dry ratio was 1:6, hydraulic load was 0.8m3/m2·d, and water temperature was 10°C-15°C, it took 25d in total to become mature, after the success of bio-film colonization, the removal rate of COD and NH4+-N can be stabilized at 80%, and the removal rate of NH4+-N can reach 90% above. The microorganism was divided into the following stages during bio-film colonization: 1.Reversible adhesion of cell on the surface of the carrier, 2.Irreversible adhesion of cell on the surface of the carrier,

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Becker, Georg. "Age structure and colonization of natural substrata by the epilithic caddisfly Tinodes rostocki (Trichoptera: Psychomyiidae)." Archiv für Hydrobiologie 127, no. 4 (1993): 423–36. http://dx.doi.org/10.1127/archiv-hydrobiol/127/1993/423.

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Chapman, M. G. "The use of sandstone blocks to test hypotheses about colonization of intertidal boulders." Journal of the Marine Biological Association of the United Kingdom 83, no. 2 (2003): 415–23. http://dx.doi.org/10.1017/s0025315403007276h.

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This study tested the hypothesis that regularly-shaped sandstone blocks in intertidal boulder-fields are colonized by mobile macrofauna at a similar rate to colonization of natural boulders. In addition, the sessile component on these plates (three levels of sessile assemblages) and their position in the boulder-field (three different positions relative to other boulders) were varied to test hypotheses about effects of these features on colonization. The epibiota varied among the three sets of plates and the natural boulders at the start of the experiment. The boulders were very rapidly coloni

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Lebon, Ankie, Nelianne J. Verkaik, Joost A. M. Labout, et al. "Natural Antibodies against Several Pneumococcal Virulence Proteins in Children during the Pre-Pneumococcal-Vaccine Era: the Generation R Study." Infection and Immunity 79, no. 4 (2011): 1680–87. http://dx.doi.org/10.1128/iai.01379-10.

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ABSTRACTThe currently available pneumococcal vaccines do not protect against all serotypes ofStreptococcus pneumoniae. A shift toward nonvaccine serotypes causing colonization and invasive disease has occurred, and studies on protein-based vaccines have been undertaken. We assessed the association between specific antibodies against pneumococcal virulence proteins and colonization and respiratory tract infections (RTIs). Additionally, we assessed the extent to which colonization induces a humoral immune response. Nasopharyngeal swabs collected from children at 1.5, 6, 14, and 24 months of age

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Ge, Zhongming, Yang Feng, Nancy S. Taylor, et al. "Colonization Dynamics of Altered Schaedler Flora Is Influenced by Gender, Aging, and Helicobacter hepaticus Infection in the Intestines of Swiss Webster Mice." Applied and Environmental Microbiology 72, no. 7 (2006): 5100–5103. http://dx.doi.org/10.1128/aem.01934-05.

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ABSTRACT The distribution and colonization levels of the altered Schaedler flora (ASF) in their natural hosts are poorly understood. Intestinal colonization levels of the eight ASF strains in outbred Swiss Webster mice with or without Helicobacter hepaticus infection were characterized by real-time quantitative PCR. All ASF strains were detected in the cecum and colon, but some strains displayed significant variation in colonization levels with host age, gender, and H. hepaticus infection status.

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Kociolek, Larry K., Robyn O. Espinosa, Dale N. Gerding, et al. "Natural Clostridioides difficile Toxin Immunization in Colonized Infants." Clinical Infectious Diseases 70, no. 10 (2019): 2095–102. http://dx.doi.org/10.1093/cid/ciz582.

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Abstract Background Clostridioides (Clostridium) difficile colonization is common among infants. Serological sequelae of infant C. difficile colonization are poorly understood. Methods In this prospective cohort study of healthy infants, stools serially collected between ages 1-2 and 9-12 months were tested for non-toxigenic and toxigenic C. difficile (TCD). Cultured isolates underwent whole-genome sequencing. Serum collected at 9–12 months underwent measurement of IgA, IgG, and IgM against TCD toxins A and B and neutralizing antibody (NAb) titers against toxin B. For comparison, antitoxin IgG

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Zhong, Xiuqin, Mehrnaz Nouri, and Lars Råberg. "Colonization and pathology of Borrelia afzelii in its natural hosts." Ticks and Tick-borne Diseases 10, no. 4 (2019): 822–27. http://dx.doi.org/10.1016/j.ttbdis.2019.03.017.

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Sasso, S., A. Z. Miller, M. A. Rogerio-Candelera, et al. "Potential of natural biocides for biocontrolling phototrophic colonization on limestone." International Biodeterioration & Biodegradation 107 (February 2016): 102–10. http://dx.doi.org/10.1016/j.ibiod.2015.11.017.

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Coleman, Deirdre. "Anti-Slavery, African Colonization, and the Natural History of Ballooning." Romanticism 25, no. 1 (2019): 32–44. http://dx.doi.org/10.3366/rom.2019.0399.

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Henry Smeathman (1742–86) was a self-taught naturalist who collected naturalia in West Africa and the West Indies for wealthy London sponsors. In 1783 he travelled to Paris with letters of introduction to Benjamin Franklin with the aim of finding supporters in either France or America for a free African settlement which would undermine the slave trade through ‘legitimate’ commerce. His arrival coincided with the launch of the Montgolfier balloons, followed by the race to invent a mode of aerial transportation. Drawing on Smeathman's eye-witness accounts of the ascents, many of which have never

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Naylor, Stuart W., Allen Flockhart, Pablo Nart, et al. "Shedding of Escherichia coli O157:H7 in Calves Is Reduced by Prior Colonization with the Homologous Strain." Applied and Environmental Microbiology 73, no. 11 (2007): 3765–67. http://dx.doi.org/10.1128/aem.02670-06.

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ABSTRACT Enterohemorrhagic Escherichia coli O157:H7 has a natural reservoir in the intestinal tracts of cattle. Colonization is asymptomatic and transient, but it is not clear if protective immunity is induced. This study demonstrates that prior colonization induces humoral immune responses to bacterial antigens and reduces bacterial shedding after experimental challenge with the homologous strain.

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Bueno, Marilia, Glauco B. O. Machado, and Fosca P. P. Leite. "Colonization of novel algal habitats by juveniles of a marine tube-dwelling amphipod." PeerJ 8 (October 15, 2020): e10188. http://dx.doi.org/10.7717/peerj.10188.

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Background Dispersal is an important process affecting population dynamics and connectivity. For marine direct developers, both adults and juveniles may disperse. Although the distribution of juveniles can be initially constrained by their mothers’ choice, they may be able to leave the parental habitat and colonize other habitats. We investigated the effect of habitat quality, patch size and presence of conspecific adults on the colonization of novel habitats by juveniles of the tube-dwelling amphipod Cymadusa filosa associated with the macroalgal host Sargassum filipendula. Methods We tested

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Elvira-Recuenco, M., and J. W. L. van Vuurde. "Natural incidence of endophytic bacteria in pea cultivars under field conditions." Canadian Journal of Microbiology 46, no. 11 (2000): 1036–41. http://dx.doi.org/10.1139/w00-098.

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Pea plants grown in the field were used to study the natural incidence of endophytic bacteria in the stem. Eleven pea cultivars at the flowering stage were screened for the presence of endophytic bacteria using a printing technique with surface disinfested stem cross-sections on 5% Trypticase Soy Agar (TSA). Five cultivars showed colonization. Cultivar Twiggy showed the highest and most consistent colonization and was further investigated. Stems of cv. Twiggy at the pod stage were analyzed for endophytic bacterial types and populations. Cross-sections of surface disinfested stems were printed

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Tyurin, Maksim, Marsel R. Kabilov, Natalia Smirnova, et al. "Can Potato Plants Be Colonized with the Fungi Metarhizium and Beauveria under Their Natural Load in Agrosystems?" Microorganisms 9, no. 7 (2021): 1373. http://dx.doi.org/10.3390/microorganisms9071373.

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Beauveria and Metarhizium fungi are facultative plant endophytes that provide plant growth-stimulating, immunomodulatory, and other beneficial effects. However, little is known about the level of plant colonization by these fungi under natural conditions. We assessed the endophytic colonization of potatoes (Solanum tuberosum) with entomopathogenic fungi at their natural load in soils (102–104 colony-forming units per g). Microbiological analyses of soils and plant organs, as well as a metagenomic analysis of potato roots and leaves, were conducted in three locations in Western Siberia, consist

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Nielsen, Tommy H., Ole Nybroe, Birgit Koch, Michael Hansen, and Jan Sørensen. "Genes Involved in Cyclic Lipopeptide Production Are Important for Seed and Straw Colonization by Pseudomonas sp. Strain DSS73." Applied and Environmental Microbiology 71, no. 7 (2005): 4112–16. http://dx.doi.org/10.1128/aem.71.7.4112-4116.2005.

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ABSTRACT Survival in natural bulk soil and colonization of sugar beet seeds and barley straw residues were determined for Pseudomonas sp. strain DSS73 and Tn5 mutants in amsY (encoding a peptide synthetase involved in production of the cyclic lipopeptide amphisin) and gacS (encoding the sensory kinase of the two-component GacA/GacS regulatory system). No differences in survival or growth in response to carbon amendment (citrate) were observed in bulk soil. However, both mutants were impaired in their colonization of sugar beet seeds and barley straw residues by an inoculum established in the b

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Schaake, Julia, Anna Drees, Petra Grüning, et al. "Essential Role of Invasin for Colonization and Persistence of Yersinia enterocolitica in Its Natural Reservoir Host, the Pig." Infection and Immunity 82, no. 3 (2013): 960–69. http://dx.doi.org/10.1128/iai.01001-13.

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ABSTRACTIn this study, an oral minipig infection model was established to investigate the pathogenicity ofYersinia enterocoliticabioserotype 4/O:3. O:3 strains are highly prevalent in pigs, which are usually symptomless carriers, and they represent the most common cause of human yersiniosis. To assess the pathogenic potential of the O:3 serotype, we compared the colonization properties ofY. enterocoliticaO:3 with O:8, a highly mouse-virulentY. enterocoliticaserotype, in minipigs and mice. We found that O:3 is a significantly better colonizer of swine than is O:8. Coinfection studies with O:3 m

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McCool, Tera L., and Jeffrey N. Weiser. "Limited Role of Antibody in Clearance of Streptococcus pneumoniae in a Murine Model of Colonization." Infection and Immunity 72, no. 10 (2004): 5807–13. http://dx.doi.org/10.1128/iai.72.10.5807-5813.2004.

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ABSTRACT Colonization is the first step in the interaction between Streptococcus pneumoniae and its human host. To better understand the mechanisms contributing to natural carriage, a mouse model of pneumococcal colonization was developed with a clinical isolate of S. pneumoniae previously characterized in experimental colonization of humans. Similar to carriage events in humans, colonization of mice was self-limited and there was no evidence of lower respiratory tract or invasive disease. Carriage induced a serum antibody response to whole pneumococci that was associated temporally with clear

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Jones, Michael A., Kerrie L. Marston, Claire A. Woodall, et al. "Adaptation of Campylobacter jejuni NCTC11168 to High-Level Colonization of the Avian Gastrointestinal Tract." Infection and Immunity 72, no. 7 (2004): 3769–76. http://dx.doi.org/10.1128/iai.72.7.3769-3776.2004.

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ABSTRACT The genome sequence of the human pathogen Campylobacter jejuni NCTC11168 has been determined recently, but studies on colonization and persistence in chickens have been limited due to reports that this strain is a poor colonizer. Experimental colonization and persistence studies were carried out with C. jejuni NCTC11168 by using 2-week-old Light Sussex chickens possessing an acquired natural gut flora. After inoculation, NCTC11168 initially colonized the intestine poorly. However, after 5 weeks we observed adaptation to high-level colonization, which was maintained after in vitro pass

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Jenkinson, H. F., and RJ Lamont. "Streptococcal Adhesion and Colonization." Critical Reviews in Oral Biology & Medicine 8, no. 2 (1997): 175–200. http://dx.doi.org/10.1177/10454411970080020601.

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Streptococci express arrays of adhesins on their cell surfaces that facilitate adherence to substrates present in their natural environment within the mammalian host. A consequence of such promiscuous binding ability is that streptococcal cells may adhere simultaneously to a spectrum of substrates, including salivary glycoproteins, extracellular matrix and serum components, host cells, and other microbial cells. The multiplicity of streptococcal adherence interactions accounts, at least in part, for their success in colonizing the oral and epithelial surfaces of humans. Adhesion facilitates co

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Exley, Rachel M., Richard Sim, Linda Goodwin, et al. "Identification of Meningococcal Genes Necessary for Colonization of Human Upper Airway Tissue." Infection and Immunity 77, no. 1 (2008): 45–51. http://dx.doi.org/10.1128/iai.00968-08.

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ABSTRACT Neisseria meningitidis is an exclusively human pathogen that has evolved primarily to colonize the nasopharynx rather than to cause systemic disease. Colonization is the most frequent outcome following meningococcal infection and a prerequisite for invasive disease. The mechanism of colonization involves attachment of the organism to epithelial cells via bacterial type IV pili (Tfp), but subsequent events during colonization remain largely unknown. We analyzed 576 N. meningitidis mutants for their capacity to colonize human nasopharyngeal tissue in an organ culture model to identify b

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Schaller, Julien, and Judith Agudo. "Metastatic Colonization: Escaping Immune Surveillance." Cancers 12, no. 11 (2020): 3385. http://dx.doi.org/10.3390/cancers12113385.

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Cancer immunotherapy has shifted the paradigm in cancer therapy by revitalizing immune responses against tumor cells. Specifically, in primary tumors cancer cells evolve in an immunosuppressive microenvironment, which protects them from immune attack. However, during tumor progression, some cancer cells leave the protective tumor mass, disseminating and seeding secondary organs. These initial disseminated tumor cells (DTCs) should potentially be susceptible to recognition by the immune system in the new host tissues. Although Natural Killer or T cells eliminate some of these DTCs, a fraction e

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Schoenholtz, Stephen H., James A. Burger, and John L. Torbert. "Natural Mycorrhizal Colonization of Pines on Reclaimed Surface Mines in Virginia." Journal of Environmental Quality 16, no. 2 (1987): 143–46. http://dx.doi.org/10.2134/jeq1987.00472425001600020009x.

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Cortés‐Avizanda, Ainara, and Giacomo Tavecchia. "New arrivals: natural colonization of an island by a large vertebrate." Frontiers in Ecology and the Environment 19, no. 7 (2021): 419. http://dx.doi.org/10.1002/fee.2398.

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Lawrence, J. R., Y. T. J. Kwong, and G. D. W. Swerhone. "Colonization and weathering of natural sulfide mineral assemblages by Thiobacillus ferrooxidans." Canadian Journal of Microbiology 43, no. 2 (1997): 178–88. http://dx.doi.org/10.1139/m97-023.

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Selected polished thin sections were used as model substrata to investigate the influence of geochemical and electrochemical factors on bacterial colonization and weathering of mixed sulfide minerals. Naturally occurring sulfide assemblages including combinations of pyrite, chalcopyrite, sphalerite, galena, and pyrrhotite were studied. The distribution of Thiobacillus ferrooxidans was mapped using viable negative and positive staining techniques in combination with scanning confocal laser microscopy. The minerals were characterized using scanning electron microscopy and microprobe analyses. In

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Leicht-Young, Stacey A., Rosanne Healy, and Peter Del Tredici. "Observation of mycorrhizal colonization in roots in natural populations ofCelastrus orbiculatusThunb." Journal of the Torrey Botanical Society 143, no. 3 (2016): 322–24. http://dx.doi.org/10.3159/torrey-d-15-00042.1.

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Martínková, Natália, Robbie A. McDonald, and Jeremy B. Searle. "Stoats ( Mustela erminea ) provide evidence of natural overland colonization of Ireland." Proceedings of the Royal Society B: Biological Sciences 274, no. 1616 (2007): 1387–93. http://dx.doi.org/10.1098/rspb.2007.0334.

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Martínez-Diz, María del Pilar, Ales Eichmeier, Milan Spetik, et al. "Grapevine pruning time affects natural wound colonization by wood-invading fungi." Fungal Ecology 48 (December 2020): 100994. http://dx.doi.org/10.1016/j.funeco.2020.100994.

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