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Veröffentlichungen der HSWT

Die chronologische Liste zeigt aktuelle Veröffentlichungen aus dem Forschungsbetrieb der Hochschule Weihenstephan-Triesdorf. Zuständig ist das Zentrum für Forschung und Wissenstransfer (ZFW).

8 Ergebnisse

  • Javier Reyes, Prof. Dr. Mareike Ließ

    • Berechtigungen:  Open Access

    Can soil spectroscopy contribute to soil organic carbon monitoring on agricultural soils? (2022) EGUsphere [preprint] . DOI: 10.5194/egusphere-2022-273

  • Prof. Dr. Iryna Smetanska, Diaa Mamdouh Ahmed Mohammed

    • Berechtigungen:  Open Access
    • Berechtigungen:  Peer Reviewed

    Optimization of Callus and Cell Suspension Cultures of Lycium schweinfurthii for Improved Production of Phenolics, Flavonoids, and Antioxidant Activity (2022) Horticulturae 8 (5), S. 1-17. DOI: 10.3390/horticulturae8050394

    Lycium schweinfurthii is a traditional medicinal plant grown in the Mediterranean region. As it is used in folk medicine to treat stomach ulcers, it took more attention as a source of valuable secondary metabolites. The in vitro cultures of L. schweinfurthii could be a great tool to produce secondary metabolites at low costs. The presented study aimed to introduce and optimize a protocol for inducing callus and cell suspension cultures as well as estimating phenolic, flavonoid compounds, and antioxidant activity in the cultures of the studied species. Three plant growth regulators (PGRs) were supplemented to MS medium solely or in combination to induce callus from leaf explants. The combination between 2,4-dichlorophenoxy acetic acid (2,4-D) and 1-naphthyl acetic acid (NAA) induced callus in all explants regardless of the concentration. The highest fresh weight of callus (3.92 g) was obtained on MS medium fortified with 1 mg L−1 of both 2,4-D and NAA (DN1) after 7 weeks of culture. DN1 was the best medium for callus multiplication regarding the increase in fresh weight and size of callus. Otherwise, the highest phenolics, flavonoids, and antioxidant activity against DPPH free radicals were of callus on MS fortified with 2 mg L−1 NAA (N2). The cell suspension cultures were cultivated on a liquid N2 medium with different sucrose concentrations of 5–30 g L−1 to observe the possible effects on cells’ multiplication and secondary metabolite production. The highest fresh and viable biomass of 12.01 g was obtained on N2 containing 30 g L−1 sucrose. On the other hand, the cell cultures on N2 medium of 5 and 30 g L−1 sucrose produced phenolics and flavonoids, and revealed
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  • Diana Heuermann, Norman Gentsch, Prof. Dr. Georg Guggenberger, Prof. Dr. Barbara Reinhold-Hurek, Dörte Schweneker, Dr. Ulf Feuerstein, Marc Christian Heuermann, Jonas Groß, M.Sc. Robin Kümmerer, Prof. Dr. Bernhard Bauer, Prof. Nicolaus von Wirén

    • Berechtigungen:  Open Access
    • Berechtigungen:  Peer Reviewed

    Catch crop mixtures have higher potential for nutrient carry-over than pure stands under changing environments (2022) European Journal of Agronomy 136 , S. 1-14. DOI: 10.1016/j.eja.2022.126504

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  • Gustavo Chaves, Artem G. Ayuyan, Vladimir V. Cherny, Deri Morgan, Arne Franzen, Lynne Fieber, Prof. Dr. Lydia Nausch, Christian Derst, Iryna Mahorivska, Christophe Jardin, Thomas E. DeCoursey, Boris Musset

    • Berechtigungen:  Peer Reviewed

    Unexpected Expansion of the Voltage-Gated Proton CHannel Family (2022) Experimental Biology I FASEB I April 2-5 2022, Philadelphia, USA .

    Voltage-gated ion channels, whose first identified function was to generate action potentials, are divided into subfamilies with numerous members. The family of voltage-gated proton channels (HV ) is tiny. To date, all species found to express HV , have exclusively one gene that codes for this unique ion channel. Here we report the discovery and characterization of three proton channel genes in the classical model system of neural plasticity, Aplysia californica. The three channels (AcHV1, AcHV2, AcHV3) are distributed throughout the whole animal. Patch-clamp analysis confirmed proton selectivity of these channels but they all differed markedly in gating. AcHV1 gating resembled HV in mammalian channels where it is responsible for proton extrusion and charge compensation. AcHV2 activates more negatively and conducts extensive inward proton current, properties likely to acidify the cytosol. AcHV3, which differs from AcHV1 and AcHV2 in lacking the first arginine in the S4 helix, exhibits proton selective leak currents and weak voltage dependence. We report the expansion of the proton channel family, demonstrating for the first time the expression of three functionally distinct proton channels in a single species.
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Zentrum für Forschung und Wissenstransfer - Lageplan in Weihenstephan an der HSWT

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