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  1. Article ; Online: Cultural Characterization and Antagonistic Activity of Cladobotryum virescens against Some Phytopathogenic Fungi and Oomycetes

    Hernández, Giselle / Ramos, Beatriz / Sultani, Haider N. / Ortiz, Yarelis / Spengler, Iraida / Castañeda, Rafael F. / Rivera, Daniel G. / Arnold, Norbert / Westermann, Bernhard / Mirabal, Yaneris

    Agronomy. 2023 Jan. 28, v. 13, no. 2

    2023  

    Abstract: In this study, the characteristic growth of Cladobotryum virescens on nine culture media was analyzed. The growing behavior of this fungus was dependent on the culture medium. In vitro analysis showed that oat agar was better than other media tested with ...

    Abstract In this study, the characteristic growth of Cladobotryum virescens on nine culture media was analyzed. The growing behavior of this fungus was dependent on the culture medium. In vitro analysis showed that oat agar was better than other media tested with the highest conidia production. The antifungal activity against Fusarium chlamydosporum and Alternaria brassicicola was evaluated by the Dual Culture method. C. virescens displayed high activity against both pathogens acting through antibiosis and mycoparasitism. This effect was increased by a higher competitiveness of the strain for the substrate. Furthermore, the crude ethyl acetate extract of the culture broth was tested in vitro against Botrytis cinerea and Septoria tritici, as well as the hemibiotrophic oomycete Phytophthora infestans using a microtiter plate assay at different concentrations. The extract showed excellent inhibition even below 5 ppm. According to these results, we concluded that C. virescens can be considered as a potential biological control agent in agriculture. To the best of our knowledge, this is the first study to investigate C. virescens as a biocontrol agent for different diseases caused by five relevant pathogens that affect cereals and vegetables.
    Keywords Alternaria brassicicola ; Botrytis cinerea ; Fusarium chlamydosporum ; Hypomyces ; Mycosphaerella graminicola ; Phytophthora infestans ; agar ; agronomy ; antibiosis ; antifungal properties ; biological control agents ; conidia ; culture media ; ethyl acetate ; fungi ; mycoparasites ; oats
    Language English
    Dates of publication 2023-0128
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article ; Online
    ZDB-ID 2607043-1
    ISSN 2073-4395
    ISSN 2073-4395
    DOI 10.3390/agronomy13020389
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Access to New Cytotoxic Triterpene and Steroidal Acid-TEMPO Conjugates by Ugi Multicomponent-Reactions.

    Sultani, Haider N / Morgan, Ibrahim / Hussain, Hidayat / Roos, Andreas H / Haeri, Haleh H / Kaluđerović, Goran N / Hinderberger, Dariush / Westermann, Bernhard

    International journal of molecular sciences

    2021  Volume 22, Issue 13

    Abstract: Multicomponent reactions, especially the Ugi-four component reaction (U-4CR), provide powerful protocols to efficiently access compounds having potent biological and pharmacological effects. Thus, a diverse library of betulinic acid (BA), fusidic acid ( ... ...

    Abstract Multicomponent reactions, especially the Ugi-four component reaction (U-4CR), provide powerful protocols to efficiently access compounds having potent biological and pharmacological effects. Thus, a diverse library of betulinic acid (BA), fusidic acid (FA), cholic acid (CA) conjugates with TEMPO (nitroxide) have been prepared using this approach, which also makes them applicable in electron paramagnetic resonance (EPR) spectroscopy. Moreover, convertible amide modified spin-labelled fusidic acid derivatives were selected for post-Ugi modification utilizing a wide range of reaction conditions which kept the paramagnetic center intact. The nitroxide labelled betulinic acid analogue
    MeSH term(s) Antineoplastic Agents/pharmacology ; Apoptosis/drug effects ; Cell Line, Tumor/drug effects ; Cholic Acid/chemistry ; Cyclic N-Oxides/chemistry ; Electron Spin Resonance Spectroscopy/methods ; Fusidic Acid/chemistry ; Humans ; Neoplasms/drug therapy ; Pentacyclic Triterpenes/chemistry ; Small Molecule Libraries/chemical synthesis ; Spin Labels ; Steroids/pharmacology ; Triterpenes/pharmacology
    Chemical Substances Antineoplastic Agents ; Cyclic N-Oxides ; Pentacyclic Triterpenes ; Small Molecule Libraries ; Spin Labels ; Steroids ; Triterpenes ; betulinic acid (4G6A18707N) ; Fusidic Acid (59XE10C19C) ; Cholic Acid (G1JO7801AE) ; TEMPO (VQN7359ICQ)
    Language English
    Publishing date 2021-07-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms22137125
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  3. Article: Metabolites profiling of Ziziphus leaf taxa via UHPLC/PDA/ESI-MS in relation to their biological activities

    Sakna, Sarah T / Mocan, Andrei / Sultani, Haider N / El-fiky, Nabaweya M / Wessjohann, Ludger A / Farag, Mohamed A

    Food chemistry. 2019 Sept. 30, v. 293

    2019  

    Abstract: Ziziphus plants are well recognized for their nutritive and medicinal value worldwide, albeit their chemical profile has yet to be fully reported. The secondary metabolites profile of three traditionally used Ziziphus leaf accessions was investigated via ...

    Abstract Ziziphus plants are well recognized for their nutritive and medicinal value worldwide, albeit their chemical profile has yet to be fully reported. The secondary metabolites profile of three traditionally used Ziziphus leaf accessions was investigated via ultra-high performance liquid chromatography coupled to photodiode array and electrospray ionization mass detectors (UHPLC/PDA/ESI-MS). A total of 102 metabolites were characterized revealing the first holistic approach onto Ziziphus leaf metabolome and to include the first report of several novel flavonoids and cyclopeptide alkaloids. Fragmentation pattern for cyclopeptide alkaloids was proposed via ESI-MS. Principal component analysis (PCA) revealed close metabolite resemblance among Z. spina-christi and Z. mauritiana leaf specimens found enriched in saponins and distinct from that of Z. jujuba in which quercetin-3-O-(2-pentosyl)-rhamnoside was most abundant. Further, in-vitro antioxidant, anti-inflammatory and antidiabetic assays revealed for Z. spina-christi and Z. mauritiana strong effects compared to Z. jujuba and in correlation with their metabolites repertoire.
    Keywords Ziziphus jujuba ; Ziziphus mauritiana ; Ziziphus spina-christi ; alkaloids ; antioxidants ; bioactive properties ; detectors ; electrospray ionization mass spectrometry ; flavonoids ; high performance liquid chromatography ; ionization ; leaves ; metabolome ; principal component analysis ; saponins ; secondary metabolites ; ultra-performance liquid chromatography
    Language English
    Dates of publication 2019-0930
    Size p. 233-246.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2019.04.097
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    In stock of ZB MED Bonn / Germany

    Z 3634: Show issues

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  4. Article ; Online: Spin-labelled diketopiperazines and peptide-peptoid chimera by Ugi-multi-component-reactions.

    Sultani, Haider N / Haeri, Haleh H / Hinderberger, Dariush / Westermann, Bernhard

    Organic & biomolecular chemistry

    2016  Volume 14, Issue 48, Page(s) 11336–11341

    Abstract: For the first time, spin-labelled coumpounds have been obtained by isonitrile-based multi component reactions (IMCRs). The typical IMCR Ugi-protocols offer a simple experimental setup allowing structural variety by which labelled diketopiperazines (DKPs) ...

    Abstract For the first time, spin-labelled coumpounds have been obtained by isonitrile-based multi component reactions (IMCRs). The typical IMCR Ugi-protocols offer a simple experimental setup allowing structural variety by which labelled diketopiperazines (DKPs) and peptide-peptoid chimera have been synthesized. The reaction keeps the paramagnetic spin label intact and offers a simple and versatile route to a large variety of new and chemically diverse spin labels.
    Language English
    Publishing date 2016-12-28
    Publishing country England
    Document type Journal Article
    ZDB-ID 2097583-1
    ISSN 1477-0539 ; 1477-0520
    ISSN (online) 1477-0539
    ISSN 1477-0520
    DOI 10.1039/c6ob02194h
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Metabolites profiling of Ziziphus leaf taxa via UHPLC/PDA/ESI-MS in relation to their biological activities.

    Sakna, Sarah T / Mocan, Andrei / Sultani, Haider N / El-Fiky, Nabaweya M / Wessjohann, Ludger A / Farag, Mohamed A

    Food chemistry

    2019  Volume 293, Page(s) 233–246

    Abstract: Ziziphus plants are well recognized for their nutritive and medicinal value worldwide, albeit their chemical profile has yet to be fully reported. The secondary metabolites profile of three traditionally used Ziziphus leaf accessions was investigated via ...

    Abstract Ziziphus plants are well recognized for their nutritive and medicinal value worldwide, albeit their chemical profile has yet to be fully reported. The secondary metabolites profile of three traditionally used Ziziphus leaf accessions was investigated via ultra-high performance liquid chromatography coupled to photodiode array and electrospray ionization mass detectors (UHPLC/PDA/ESI-MS). A total of 102 metabolites were characterized revealing the first holistic approach onto Ziziphus leaf metabolome and to include the first report of several novel flavonoids and cyclopeptide alkaloids. Fragmentation pattern for cyclopeptide alkaloids was proposed via ESI-MS. Principal component analysis (PCA) revealed close metabolite resemblance among Z. spina-christi and Z. mauritiana leaf specimens found enriched in saponins and distinct from that of Z. jujuba in which quercetin-3-O-(2-pentosyl)-rhamnoside was most abundant. Further, in-vitro antioxidant, anti-inflammatory and antidiabetic assays revealed for Z. spina-christi and Z. mauritiana strong effects compared to Z. jujuba and in correlation with their metabolites repertoire.
    MeSH term(s) Alkaloids/analysis ; Chromatography, High Pressure Liquid/methods ; Flavonoids/analysis ; Metabolome ; Plant Extracts/chemistry ; Plant Leaves/chemistry ; Plant Leaves/metabolism ; Principal Component Analysis ; Saponins/analysis ; Spectrometry, Mass, Electrospray Ionization/methods ; Ziziphus/chemistry ; Ziziphus/metabolism
    Chemical Substances Alkaloids ; Flavonoids ; Plant Extracts ; Saponins
    Language English
    Publishing date 2019-04-25
    Publishing country England
    Document type Journal Article
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2019.04.097
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  6. Article ; Online: Phytochemical Profiles and Antimicrobial Activities of Allium cepa Red cv. and A. sativum Subjected to Different Drying Methods: A Comparative MS-Based Metabolomics.

    Farag, Mohamed A / Ali, Sara E / Hodaya, Rashad H / El-Seedi, Hesham R / Sultani, Haider N / Laub, Annegret / Eissa, Tarek F / Abou-Zaid, Fouad O F / Wessjohann, Ludger A

    Molecules (Basel, Switzerland)

    2017  Volume 22, Issue 5

    Abstract: Plants of ... ...

    Abstract Plants of the
    MeSH term(s) Anti-Infective Agents/analysis ; Anti-Infective Agents/chemistry ; Anti-Infective Agents/metabolism ; Flavonoids/analysis ; Flavonoids/chemistry ; Flavonoids/metabolism ; Garlic/chemistry ; Garlic/metabolism ; Mass Spectrometry/methods ; Metabolomics/methods ; Onions/chemistry ; Onions/metabolism ; Sulfur Compounds/analysis ; Sulfur Compounds/chemistry ; Sulfur Compounds/metabolism
    Chemical Substances Anti-Infective Agents ; Flavonoids ; Sulfur Compounds
    Language English
    Publishing date 2017-05-08
    Publishing country Switzerland
    Document type Comparative Study ; Journal Article
    ZDB-ID 1413402-0
    ISSN 1420-3049 ; 1431-5165 ; 1420-3049
    ISSN (online) 1420-3049
    ISSN 1431-5165 ; 1420-3049
    DOI 10.3390/molecules22050761
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    In stock of ZB MED Cologne/Königswinter

    Zs.MO 81: Show issues

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