Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Elisabeth Helmke"'
Autor:
Hartmut Laatsch, Imelda Schuhmann, Vimal Nair, Birger Dittrich, Khaled A. Shaaban, Lei Lei, Elisabeth Helmke, Anja Schüffler, Hnin Yu Win, Mohamed Shaaban
Publikováno v:
Zeitschrift für Naturforschung B. 71:1191-1198
Chemical investigation of terrestrial and marine streptomycete isolates led to the identification of two new natural pigments, namely, 6-hydroxyisatin (3) and 6-hydroxy-5-methoxyisatin (4). Additionally, the strains delivered numerous known compounds
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4948de6f21fc04998b482b3ac6289fe
https://doi.org/10.1515/znb-2016-0143
https://doi.org/10.1515/znb-2016-0143
Autor:
Elisabeth Helmke, Ursula Schauer, Ellen Damm, Eva-Maria Nöthig, Silke Thoms, Karel Bakker, Ronald P. Kiene
Publikováno v:
Scopus-Elsevier
Biogeosciences, Vol 7, Iss 3, Pp 1099-1108 (2010)
Biogeosciences, Vol 7, Iss 3, Pp 1099-1108 (2010)
A methane surplus relative to the atmospheric equilibrium is a frequently observed feature of ocean surface water. Despite the common fact that biological processes are responsible for its origin, the formation of methane in aerobic surface water is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60b7510ff60eade689671aad6cefad1a
https://www.biogeosciences.net/7/1099/2010/
https://www.biogeosciences.net/7/1099/2010/
Autor:
Patrick Monien, Doris Abele, Stephan Frickenhaus, Walter P. Mac Cormack, Julia Villalba Primitz, Jutta Jürgens, Roberto Pepino Minetti, Susana Vázquez, Elisabeth Helmke, Antonio Curtosi
Publikováno v:
EPIC3Science of The Total Environment, ELSEVIER SCIENCE BV, 605-60, pp. 26-37, ISSN: 0048-9697
A diesel spill occurring at Carlini Station (King George Island (Isla 25 de Mayo), South Shetland Islands) in 2009 started the study of the fate of the hydrocarbons and their effect on the bacterial communities of the Potter Cove ecosystem. Soils and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::391c2335c07c04bd922958cdd4485c5b
http://www.sciencedirect.com/science/article/pii/S0048969717315334
http://www.sciencedirect.com/science/article/pii/S0048969717315334
Autor:
Cecilia Quiroga, Christoph Held, José L. López, Lars Harms, Edgardo A. Hernández, Doris Abele, Agj Buma, Elisabeth Helmke, W.P. Mac Cormack, Stephan Frickenhaus, Susana Vázquez
Publikováno v:
EPIC3Marine Genomics, ELSEVIER SCIENCE BV, 33, pp. 1-11, ISSN: 1874-7787
EPIC3Marine Genomics
EPIC3Marine Genomics
Molecular technologies are more frequently applied in Antarctic ecosystem research and the growing amount of sequence-based information available in databases adds a new dimension to understanding the response of Ant- arctic organisms and communities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebeb08919c7d1f9ef5d51e2fd9217c26
https://pubmed.ncbi.nlm.nih.gov/28479280
https://pubmed.ncbi.nlm.nih.gov/28479280
Autor:
Heidrun Anke, Imelda Schuhmann, Heinz-Herbert Fiebig, Gerhard Kelter, Vimal Nair, Elisabeth Helmke, Hartmut Laatsch
Publikováno v:
Planta medica. 82(9-10)
From the gastrointestinal tract of a fish dredged near the South Orkney Islands in Antarctica, we isolated the psychrotolerant bacterial strain T262, which belongs to the species Vibrio splendidus. Investigation of this strain led to the isolation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9dd37b789b851433645828f6d0d85b13
https://pubmed.ncbi.nlm.nih.gov/27286331
https://pubmed.ncbi.nlm.nih.gov/27286331
Autor:
Imene Zendah, Hartmut Laatsch, Khaled A. Shaaban, Armin Maier, Heinz H. Fiebig, Elisabeth Helmke
Publikováno v:
Zeitschrift für Naturforschung B. 67:417-420
A new thiazolyl-indole alkaloid, barakacin (1), has been isolated from the ruminal bacterium Pseudomonas aeruginosa strain ZIO. On the basis of detailed spectroscopic analyses and comparison with the data of related compounds, its structure has been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51b7bf08aa16060b034a6e3c5513aea4
https://doi.org/10.5560/znb.2011-0277
https://doi.org/10.5560/znb.2011-0277
Publikováno v:
The Journal of Antibiotics. 64:205-209
Glucopiericidin C: a cytotoxic piericidin glucoside antibiotic produced by a marine Streptomyces isolate *
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4a7089c615712f69e414fcb99f6ee31
https://doi.org/10.1038/ja.2010.125
https://doi.org/10.1038/ja.2010.125
Autor:
Imelda Schuhmann, Clarisse Blandine Fotso Fondja Yao, Wael A. Al-Zereini, Elisabeth Helmke, Hartmut Laatsch, Heidrun Anke
Publikováno v:
The Journal of Antibiotics. 62:453-460
Twenty-five aromatic nitro, dinitro and trinitro compounds were isolated in low yields of less than 1 mg l(-1) from a Salegentibacter sp. strain T436 derived from Arctic pack ice. Their structures were elucidated by MS and NMR techniques. Seven of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47d5b279d6b612506df11aa44818dcc6
https://doi.org/10.1038/ja.2009.71
https://doi.org/10.1038/ja.2009.71
Publikováno v:
The Journal of Antibiotics. 60:301-308
Nineteen aromatic nitro compounds were isolated from the culture broth of an Arctic sea ice bacterium. Four of these compounds are new and six compounds are reported from a natural source for the first time. The new natural products showed weak antim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09c0c2d1d990990166f8d667af70ea9c
https://doi.org/10.1038/ja.2007.38
https://doi.org/10.1038/ja.2007.38
Publikováno v:
Zeitschrift für Naturforschung B. 61:1450-1454
Two new anthraquinones were isolated from the marine Streptomyces sp. B8000, in addition to the known metabolites 3,8-dihydroxy-1-propylanthraquinone-2-carboxylic acid (1a), indole-3- carboxylic acid, 2-desoxythymidin, indole-3-acetic acid methyl est
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fe08762ec8864b830aaefb640954dc9
https://doi.org/10.1515/znb-2006-1122
https://doi.org/10.1515/znb-2006-1122