publications of the research group of microbial drugs (MWIS)http://hdl.handle.net/10033/6208582024-03-28T09:05:45Z2024-03-28T09:05:45ZAuthor Correction: The planctomycete Stieleria maiorica Mal15 employs stieleriacines to alter the species composition in marine biofilms.Kallscheuer, NicolaiJeske, OlgaSandargo, BirtheBoedeker, ChristianWiegand, SandraBartling, PascalJogler, MareikeRohde, ManfredPetersen, JörnMedema, Marnix HSurup, FrankJogler, Christianhttp://hdl.handle.net/10033/6232152022-06-14T01:57:03Z2020-08-31T00:00:00ZAuthor Correction: The planctomycete Stieleria maiorica Mal15 employs stieleriacines to alter the species composition in marine biofilms.
Kallscheuer, Nicolai; Jeske, Olga; Sandargo, Birthe; Boedeker, Christian; Wiegand, Sandra; Bartling, Pascal; Jogler, Mareike; Rohde, Manfred; Petersen, Jörn; Medema, Marnix H; Surup, Frank; Jogler, Christian
2020-08-31T00:00:00ZMimonoside D: a new triterpenoid saponin from Sauvalle (Fabaceae).Kenmogne, Claudie FokouPonou, Beaudelaire KemvoufoKemkuignou, Blondelle MatioKühlborn, JonasTchuenguem, Roland TTeponno, Rémy BertrandDzoyem, Jean PaulOpatz, TillTapondjou, Léon Azefackhttp://hdl.handle.net/10033/6231522022-02-02T09:20:03Z2021-11-29T00:00:00ZMimonoside D: a new triterpenoid saponin from Sauvalle (Fabaceae).
Kenmogne, Claudie Fokou; Ponou, Beaudelaire Kemvoufo; Kemkuignou, Blondelle Matio; Kühlborn, Jonas; Tchuenguem, Roland T; Teponno, Rémy Bertrand; Dzoyem, Jean Paul; Opatz, Till; Tapondjou, Léon Azefack
A new triterpenoid saponin (Mimonoside D: 3-O-α-L-arabinopyranosyl-3β-hydroxyolean-12-en-28-oic acid 28-O-β-D-xylopyranosyl-(1→2)-β-D- glucopyranoside ester (1)) was isolated from the aerial parts of Mimosa diplotricha Sauvalle together with nine known compounds: 7,4'-dihydroxyflavone (2), kaempferol (3), lupeol (4), betulinic acid (5), β-sitosterol (6), β-sitosterol-3-O-β-D-glucopyranoside (7), lutein (8), 5,2'-dihydroxy-7,4',5'-trimethoxyflavone (9) and vitexin (10). Their structures were elucidated on the basis of spectroscopic (1 D and 2 D nuclear magnetic resonance) and high-resolution mass spectrometric data as well as by comparison of their spectral data with those of related compounds. Compounds 2, 7 and 8 had already been isolated from M. diplotricha, while compounds 3, 4, 5 and 6 have been isolated from other Mimosa species. Compound 2 moderately inhibited Proteus mirabilis (MIC = 32 µg/mL), weakly inhibited Pseudomonas aeruginosa (MIC = 64 µg/mL) and very weakly inhibited Staphylococcus aureus (MIC = 128 µg/mL) and Enterococus faecalis (MIC = 128 µg/mL).
2021-11-29T00:00:00ZTwo New Triterpenes from Basidiomata of the Medicinal and Edible Mushroom laetiporus sulphureus .Hassan, KhadijaMatio Kemkuignou, BlondelleStadler, Marchttp://hdl.handle.net/10033/6231242022-01-21T16:13:40Z2021-11-24T00:00:00ZTwo New Triterpenes from Basidiomata of the Medicinal and Edible Mushroom laetiporus sulphureus .
Hassan, Khadija; Matio Kemkuignou, Blondelle; Stadler, Marc
In the search for novel anti-infectives from natural sources, fungi, in particular basidiomycetes, have proven to still harbor so much potential in terms of secondary metabolites diversity. There have been numerous reports on isolating numerous secondary metabolites from genus Laetiporus. This study reports on two new triterpenoids, laetiporins C and D, and four known triterpenes from the fruiting body of L. sulphureus. The structures of the isolated compounds were elucidated based on their 1D and 2D nuclear magnetic resonance (NMR) spectroscopic data in combination with high-resolution electrospray mass spectrometric (HR-ESIMS) data. Laetiporin C exhibited weak antifungal activity against Mucor hiemalis. Furthermore, the compounds showed weak antiproliferative activity against the mouse fibroblast L929 and human cancer cell lines, including KB-3-1, A431, MCF-7, PC-3 and A549.
2021-11-24T00:00:00ZRetiboletus (Boletaceae) in northern Thailand: one novel species and two first recordsChuankid, BoontiyaVadthanarat, SanthitiThongbai, BenjarongStadler, MarcLumyong, SaisamornHyde, Kevin DavidRaspé, Olivierhttp://hdl.handle.net/10033/6231142021-12-08T01:52:19Z2021-01-01T00:00:00ZRetiboletus (Boletaceae) in northern Thailand: one novel species and two first records
Chuankid, Boontiya; Vadthanarat, Santhiti; Thongbai, Benjarong; Stadler, Marc; Lumyong, Saisamorn; Hyde, Kevin David; Raspé, Olivier
Morphological characters and multi-gene phylogenetic analyses were used to identify Retiboletus specimens collected in northern Thailand. Retiboletus brevibasidiatus is described as new to science, whereas R. fuscus and R. nigrogriseus are reported for the first time from Thailand. Retiboletus brevibasidiatus produces medium-sized basidiomes, with a dark blonde to clay pileus and densely reticulate stipe mostly on the upper part with pale yellow to chrome yellow basal mycelium. It is difficult to separate R. brevibasidiatus from other closely related species on the basis of macroscopic characters. However, the new species can be distinguished by microscopic characters, mostly the shorter basidia. The macro- and micro-morphology of the R. fuscus and R. nigrogriseus collections from Thailand fit well with the previous descriptions of materials from China and Japan. Detailed descriptions, molecular phylogeny, and illustrations of the three species are provided.
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