Ghasemian E 2055 Horn M
Ghasemian E 2055 Daims H
Ghasemian E 2055 Berry D
Ghasemian E 2055 Loy A
Ghasemian E 2055 Wagner M
Ghasemian E 2055 Eichorst SA
Ghasemian E 2055 Mussmann M
Ghasemian E 2055 Wasmund K
Ghasemian E 2055 Herbold CW
Ghasemian E 2055 Sedlacek CJ
Inic-Kanada A 2056 Horn M
Inic-Kanada A 2056 Daims H
Inic-Kanada A 2056 Berry D
Inic-Kanada A 2056 Loy A
Inic-Kanada A 2056 Wagner M
Inic-Kanada A 2056 Eichorst SA
Inic-Kanada A 2056 Mussmann M
Inic-Kanada A 2056 Wasmund K
Inic-Kanada A 2056 Herbold CW
Inic-Kanada A 2056 Sedlacek CJ
Collingro A 293 Horn M
Collingro A 293 Daims H
Collingro A 293 Berry D
Collingro A 293 Loy A
Collingro A 293 Wagner M
Collingro A 293 Eichorst SA
Collingro A 293 Mussmann M
Collingro A 293 Wasmund K
Collingro A 293 Herbold CW
Collingro A 293 Sedlacek CJ
Tagini F 2057 Horn M
Tagini F 2057 Daims H
Tagini F 2057 Berry D
Tagini F 2057 Loy A
Tagini F 2057 Wagner M
Tagini F 2057 Eichorst SA
Tagini F 2057 Mussmann M
Tagini F 2057 Wasmund K
Tagini F 2057 Herbold CW
Tagini F 2057 Sedlacek CJ
Stein E 2058 Horn M
Stein E 2058 Daims H
Stein E 2058 Berry D
Stein E 2058 Loy A
Stein E 2058 Wagner M
Stein E 2058 Eichorst SA
Stein E 2058 Mussmann M
Stein E 2058 Wasmund K
Stein E 2058 Herbold CW
Stein E 2058 Sedlacek CJ
Alchalabi H 2059 Horn M
Alchalabi H 2059 Daims H
Alchalabi H 2059 Berry D
Alchalabi H 2059 Loy A
Alchalabi H 2059 Wagner M
Alchalabi H 2059 Eichorst SA
Alchalabi H 2059 Mussmann M
Alchalabi H 2059 Wasmund K
Alchalabi H 2059 Herbold CW
Alchalabi H 2059 Sedlacek CJ
Schuerer N 2060 Horn M
Schuerer N 2060 Daims H
Schuerer N 2060 Berry D
Schuerer N 2060 Loy A
Schuerer N 2060 Wagner M
Schuerer N 2060 Eichorst SA
Schuerer N 2060 Mussmann M
Schuerer N 2060 Wasmund K
Schuerer N 2060 Herbold CW
Schuerer N 2060 Sedlacek CJ
Keše D 2061 Horn M
Keše D 2061 Daims H
Keše D 2061 Berry D
Keše D 2061 Loy A
Keše D 2061 Wagner M
Keše D 2061 Eichorst SA
Keše D 2061 Mussmann M
Keše D 2061 Wasmund K
Keše D 2061 Herbold CW
Keše D 2061 Sedlacek CJ
Babiker BE 2062 Horn M
Babiker BE 2062 Daims H
Babiker BE 2062 Berry D
Babiker BE 2062 Loy A
Babiker BE 2062 Wagner M
Babiker BE 2062 Eichorst SA
Babiker BE 2062 Mussmann M
Babiker BE 2062 Wasmund K
Babiker BE 2062 Herbold CW
Babiker BE 2062 Sedlacek CJ
Borel N 2063 Horn M
Borel N 2063 Daims H
Borel N 2063 Berry D
Borel N 2063 Loy A
Borel N 2063 Wagner M
Borel N 2063 Eichorst SA
Borel N 2063 Mussmann M
Borel N 2063 Wasmund K
Borel N 2063 Herbold CW
Borel N 2063 Sedlacek CJ
Greub G 2064 Horn M
Greub G 2064 Daims H
Greub G 2064 Berry D
Greub G 2064 Loy A
Greub G 2064 Wagner M
Greub G 2064 Eichorst SA
Greub G 2064 Mussmann M
Greub G 2064 Wasmund K
Greub G 2064 Herbold CW
Greub G 2064 Sedlacek CJ
Barisani-Asenbauer T 2065 Horn M
Barisani-Asenbauer T 2065 Daims H
Barisani-Asenbauer T 2065 Berry D
Barisani-Asenbauer T 2065 Loy A
Barisani-Asenbauer T 2065 Wagner M
Barisani-Asenbauer T 2065 Eichorst SA
Barisani-Asenbauer T 2065 Mussmann M
Barisani-Asenbauer T 2065 Wasmund K
Barisani-Asenbauer T 2065 Herbold CW
Barisani-Asenbauer T 2065 Sedlacek CJ
Webster NS 1200 Horn M
Webster NS 1200 Daims H
Webster NS 1200 Berry D
Webster NS 1200 Loy A
Webster NS 1200 Wagner M
Webster NS 1200 Eichorst SA
Webster NS 1200 Mussmann M
Webster NS 1200 Wasmund K
Webster NS 1200 Herbold CW
Webster NS 1200 Sedlacek CJ
Wagner M 273 Horn M
Wagner M 273 Daims H
Wagner M 273 Berry D
Wagner M 273 Loy A
Wagner M 273 Wagner M
Wagner M 273 Eichorst SA
Wagner M 273 Mussmann M
Wagner M 273 Wasmund K
Wagner M 273 Herbold CW
Wagner M 273 Sedlacek CJ
Negri AP 2047 Horn M
Negri AP 2047 Daims H
Negri AP 2047 Berry D
Negri AP 2047 Loy A
Negri AP 2047 Wagner M
Negri AP 2047 Eichorst SA
Negri AP 2047 Mussmann M
Negri AP 2047 Wasmund K
Negri AP 2047 Herbold CW
Negri AP 2047 Sedlacek CJ
Petersen JM 1317 Horn M
Petersen JM 1317 Daims H
Petersen JM 1317 Berry D
Petersen JM 1317 Loy A
Petersen JM 1317 Wagner M
Petersen JM 1317 Eichorst SA
Petersen JM 1317 Mussmann M
Petersen JM 1317 Wasmund K
Petersen JM 1317 Herbold CW
Petersen JM 1317 Sedlacek CJ
Osvatic J 2042 Horn M
Osvatic J 2042 Daims H
Osvatic J 2042 Berry D
Osvatic J 2042 Loy A
Osvatic J 2042 Wagner M
Osvatic J 2042 Eichorst SA
Osvatic J 2042 Mussmann M
Osvatic J 2042 Wasmund K
Osvatic J 2042 Herbold CW
Osvatic J 2042 Sedlacek CJ
Romano S 1910 Horn M
Romano S 1910 Daims H
Romano S 1910 Berry D
Romano S 1910 Loy A
Romano S 1910 Wagner M
Romano S 1910 Eichorst SA
Romano S 1910 Mussmann M
Romano S 1910 Wasmund K
Romano S 1910 Herbold CW
Romano S 1910 Sedlacek CJ
Volland JM 661 Horn M
Volland JM 661 Daims H
Volland JM 661 Berry D
Volland JM 661 Loy A
Volland JM 661 Wagner M
Volland JM 661 Eichorst SA
Volland JM 661 Mussmann M
Volland JM 661 Wasmund K
Volland JM 661 Herbold CW
Volland JM 661 Sedlacek CJ
Schintlmeister A 282 Horn M
Schintlmeister A 282 Daims H
Schintlmeister A 282 Berry D
Schintlmeister A 282 Loy A
Schintlmeister A 282 Wagner M
Schintlmeister A 282 Eichorst SA
Schintlmeister A 282 Mussmann M
Schintlmeister A 282 Wasmund K
Schintlmeister A 282 Herbold CW
Schintlmeister A 282 Sedlacek CJ
Zambalos H 1927 Horn M
Zambalos H 1927 Daims H
Zambalos H 1927 Berry D
Zambalos H 1927 Loy A
Zambalos H 1927 Wagner M
Zambalos H 1927 Eichorst SA
Zambalos H 1927 Mussmann M
Zambalos H 1927 Wasmund K
Zambalos H 1927 Herbold CW
Zambalos H 1927 Sedlacek CJ
Reipert S 1307 Horn M
Reipert S 1307 Daims H
Reipert S 1307 Berry D
Reipert S 1307 Loy A
Reipert S 1307 Wagner M
Reipert S 1307 Eichorst SA
Reipert S 1307 Mussmann M
Reipert S 1307 Wasmund K
Reipert S 1307 Herbold CW
Reipert S 1307 Sedlacek CJ
Mozetič P 1993 Horn M
Mozetič P 1993 Daims H
Mozetič P 1993 Berry D
Mozetič P 1993 Loy A
Mozetič P 1993 Wagner M
Mozetič P 1993 Eichorst SA
Mozetič P 1993 Mussmann M
Mozetič P 1993 Wasmund K
Mozetič P 1993 Herbold CW
Mozetič P 1993 Sedlacek CJ
Espada-Hinojosa S 660 Horn M
Espada-Hinojosa S 660 Daims H
Espada-Hinojosa S 660 Berry D
Espada-Hinojosa S 660 Loy A
Espada-Hinojosa S 660 Wagner M
Espada-Hinojosa S 660 Eichorst SA
Espada-Hinojosa S 660 Mussmann M
Espada-Hinojosa S 660 Wasmund K
Espada-Hinojosa S 660 Herbold CW
Espada-Hinojosa S 660 Sedlacek CJ
Turk V 1994 Horn M
Turk V 1994 Daims H
Turk V 1994 Berry D
Turk V 1994 Loy A
Turk V 1994 Wagner M
Turk V 1994 Eichorst SA
Turk V 1994 Mussmann M
Turk V 1994 Wasmund K
Turk V 1994 Herbold CW
Turk V 1994 Sedlacek CJ
Wagner M 273 Horn M
Wagner M 273 Daims H
Wagner M 273 Berry D
Wagner M 273 Loy A
Wagner M 273 Wagner M
Wagner M 273 Eichorst SA
Wagner M 273 Mussmann M
Wagner M 273 Wasmund K
Wagner M 273 Herbold CW
Wagner M 273 Sedlacek CJ
Bright M 262 Horn M
Bright M 262 Daims H
Bright M 262 Berry D
Bright M 262 Loy A
Bright M 262 Wagner M
Bright M 262 Eichorst SA
Bright M 262 Mussmann M
Bright M 262 Wasmund K
Bright M 262 Herbold CW
Bright M 262 Sedlacek CJ
Michalik A 1990 Horn M
Michalik A 1990 Daims H
Michalik A 1990 Berry D
Michalik A 1990 Loy A
Michalik A 1990 Wagner M
Michalik A 1990 Eichorst SA
Michalik A 1990 Mussmann M
Michalik A 1990 Wasmund K
Michalik A 1990 Herbold CW
Michalik A 1990 Sedlacek CJ
Schulz F 296 Horn M
Schulz F 296 Daims H
Schulz F 296 Berry D
Schulz F 296 Loy A
Schulz F 296 Wagner M
Schulz F 296 Eichorst SA
Schulz F 296 Mussmann M
Schulz F 296 Wasmund K
Schulz F 296 Herbold CW
Schulz F 296 Sedlacek CJ
Michalik K 1991 Horn M
Michalik K 1991 Daims H
Michalik K 1991 Berry D
Michalik K 1991 Loy A
Michalik K 1991 Wagner M
Michalik K 1991 Eichorst SA
Michalik K 1991 Mussmann M
Michalik K 1991 Wasmund K
Michalik K 1991 Herbold CW
Michalik K 1991 Sedlacek CJ
Wascher F 399 Horn M
Wascher F 399 Daims H
Wascher F 399 Berry D
Wascher F 399 Loy A
Wascher F 399 Wagner M
Wascher F 399 Eichorst SA
Wascher F 399 Mussmann M
Wascher F 399 Wasmund K
Wascher F 399 Herbold CW
Wascher F 399 Sedlacek CJ
Horn M 264 Horn M
Horn M 264 Daims H
Horn M 264 Berry D
Horn M 264 Loy A
Horn M 264 Wagner M
Horn M 264 Eichorst SA
Horn M 264 Mussmann M
Horn M 264 Wasmund K
Horn M 264 Herbold CW
Horn M 264 Sedlacek CJ
Szklarzewicz T 1992 Horn M
Szklarzewicz T 1992 Daims H
Szklarzewicz T 1992 Berry D
Szklarzewicz T 1992 Loy A
Szklarzewicz T 1992 Wagner M
Szklarzewicz T 1992 Eichorst SA
Szklarzewicz T 1992 Mussmann M
Szklarzewicz T 1992 Wasmund K
Szklarzewicz T 1992 Herbold CW
Szklarzewicz T 1992 Sedlacek CJ
Publications | Microbial Ecology, University of Vienna

Publications

Publications in peer reviewed journals

6 Publications found
  • Detection of Chlamydiaceae and Chlamydia-like organisms on the ocular surface of children and adults from a trachoma-endemic region

    Ghasemian E, Inic-Kanada A, Collingro A, Tagini F, Stein E, Alchalabi H, Schuerer N, Keše D, Babiker BE, Borel N, Greub G, Barisani-Asenbauer T
    2018 - Sci Rep, 1: 7432

    Abstract: 

    Trachoma, the leading infectious cause of blindness, is caused by Chlamydia trachomatis (Ct), a bacterium of the phylum Chlamydiae. Recent investigations revealed the existence of additional families within the phylum Chlamydiae, also termed Chlamydia-like organisms (CLOs). In this study, the frequency of Ct and CLOs was examined in the eyes of healthy Sudanese (control) participants and those with trachoma (case). We tested 96 children (54 cases and 42 controls) and 93 adults (51 cases and 42 controls) using broad-range Chlamydiae and Ct-specific (omcB) real-time PCR. Samples positive by broad-range Chlamydiae testing were subjected to DNA sequencing. Overall Chlamydiae prevalence was 36%. Sequences corresponded to unclassified and classified Chlamydiae. Ct infection rate was significantly higher in children (31.5%) compared to adults (0%) with trachoma (p < 0.0001). In general, 21.5% of adults and 4.2% of children tested positive for CLOs (p = 0.0003). Our findings are consistent with previous investigations describing the central role of Ct in trachoma among children. This is the first study examining human eyes for the presence of CLOs. We found an age-dependent distribution of CLO DNA in human eyes with significantly higher positivity in adults. Further studies are needed to understand the impact of CLOs in trachoma pathogenicity and/or protection.

  • Microbial conservation in the Anthropocene.

    Webster NS, Wagner M, Negri AP
    2018 - Environ. Microbiol., in press
  • Microbiomes : Importance of invertebrates in understanding the natural variety of animal-microbe interactions

    Petersen JM, Osvatic J
    2018 - mSystems, 2: in press

    Abstract: 

    Animals evolved in a world teeming with microbes, which play pivotal roles in their health, development, and evolution. Although the overwhelming majority of living animals are invertebrates, the minority of "microbiome" studies focus on this group. Interest in invertebrate-microbe interactions is 2-fold-a range of immune components are conserved across almost all animal (including human) life, and their functional roles may be conserved. Thus, understanding cross talk between microbes and invertebrate animals can lead to insights of broader relevance. Invertebrates offer unique opportunities to "eavesdrop" on intricate host-microbe conversations because they tend to associate with fewer microbes. On the other hand, considering the vast diversity of form and function that has evolved in the invertebrates, they likely evolved an equally diverse range of ways to interact with beneficial microbes. We have investigated only a few of these interactions in detail; thus, there is still great potential for fundamentally new discoveries.

  • Ecology and Biotechnological Potential of Bacteria Belonging to the Genus Pseudovibrio.

    Romano S
    2018 - Appl. Environ. Microbiol., 8: in press

    Abstract: 

    Members of the genus have been isolated worldwide from a great variety of marine sources as both free-living and host-associated bacteria. So far, the available data depict a group of alphaproteobacteria characterized by a versatile metabolism, which allows them to use a variety of substrates to meet their carbon, nitrogen, sulfur, and phosphorous requirements. Additionally, -related bacteria have been shown to proliferate under extreme oligotrophic conditions, tolerate high heavy-metal concentrations, and metabolize potentially toxic compounds. Considering this versatility, it is not surprising that they have been detected from temperate to tropical regions and are often the most abundant isolates obtained from marine invertebrates. Such an association is particularly recurrent with marine sponges and corals, animals that play a key role in benthic marine systems. The data so far available indicate that these bacteria are mainly beneficial to the host, and besides being involved in major nutrient cycles, they could provide the host with both vitamins/cofactors and protection from potential pathogens via the synthesis of antimicrobial secondary metabolites. In fact, the biosynthetic abilities of spp. have been emerging in recent years, and both genomic and analytic studies have underlined how these organisms promise novel natural products of biotechnological value.

  • NanoSIMS and tissue autoradiography reveal symbiont carbon fixation and organic carbon transfer to giant ciliate host.

    Volland JM, Schintlmeister A, Zambalos H, Reipert S, Mozetič P, Espada-Hinojosa S, Turk V, Wagner M, Bright M
    2018 - ISME J, 3: 714-727

    Abstract: 

    The giant colonial ciliate Zoothamnium niveum harbors a monolayer of the gammaproteobacteria Cand. Thiobios zoothamnicoli on its outer surface. Cultivation experiments revealed maximal growth and survival under steady flow of high oxygen and low sulfide concentrations. We aimed at directly demonstrating the sulfur-oxidizing, chemoautotrophic nature of the symbionts and at investigating putative carbon transfer from the symbiont to the ciliate host. We performed pulse-chase incubations with C- and C-labeled bicarbonate under varying environmental conditions. A combination of tissue autoradiography and nanoscale secondary ion mass spectrometry coupled with transmission electron microscopy was used to follow the fate of the radioactive and stable isotopes of carbon, respectively. We show that symbiont cells fix substantial amounts of inorganic carbon in the presence of sulfide, but also (to a lesser degree) in the absence of sulfide by utilizing internally stored sulfur. Isotope labeling patterns point to translocation of organic carbon to the host through both release of these compounds and digestion of symbiont cells. The latter mechanism is also supported by ultracytochemical detection of acid phosphatase in lysosomes and in food vacuoles of ciliate cells. Fluorescence in situ hybridization of freshly collected ciliates revealed that the vast majority of ingested microbial cells were ectosymbionts.

  • Coexistence of novel gammaproteobacterial and Arsenophonus symbionts in the scale insect Greenisca brachypodii (Hemiptera, Coccomorpha: Eriococcidae)

    Michalik A, Schulz F, Michalik K, Wascher F, Horn M, Szklarzewicz T
    2018 - Environ. Microbiol., in press

    Abstract: 

    Scale insects are commonly associated with obligate, intracellular microorganisms which play important roles in complementing their hosts with essential nutrients. Here we characterized the symbiotic system of Greenisca brachypodii, a member of the family Eriococcidae. Histological and ultrastructural analyses have indicated that G. brachypodii is stably associated with coccoid and rod-shaped bacteria. Phylogenetic analyses have revealed that the coccoid bacteria represent a sister group to the secondary symbiont of the mealybug Melanococcus albizziae, whereas the rod-shaped symbionts are close relatives of Arsenophonus symbionts in insects - to our knowledge, this is the first report of the presence of Arsenophonus bacterium in scale insects. As a comparison of 16S and 23S rRNA genes sequences of the G. brachypodii coccoid symbiont with other gammaprotebacterial sequences showed only low similarity (∼90%), we propose the name 'Candidatus Kotejella greeniscae' for its tentative classification. Both symbionts are transovarially transmitted from one generation to the next. The infection takes place in the neck region of the ovariole. The bacteria migrate between follicular cells, as well as through the cytoplasm of those cells to the perivitelline space, where they form a characteristic 'symbiont ball'. Our findings provide evidence for a polyphyletic origin of symbionts of Eriococcidae. This article is protected by copyright. All rights reserved.

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