1,220 research outputs found
Elathous rufobasalis Wurst 1994
No full text<i>Elathous rufobasalis</i> Wurst <p>(Fig. 6E)</p> <p> <i>Elathous rufobasalis</i> Wurst, 1994: 62.</p> <p> <b>Type depository</b>. Holotype, male (PCCW).</p> <p> <b>Type locality</b>. Turkey: Isparta Province, ca. 50 km N Eğirdir [misspelled as Eğridir], Kovada Hes, 1100 m.</p> <p> <b>Distribution</b>. Turkey.</p> <p> <b>Literature</b>. Wurst (1994: 62): original description; Mertlik (2005: 171): comparison with other species; Platia & Gudenzi (2005: 114): comparison with other species; Cate (2007: 164): catalogue; Gülperçin & Tezcan (2010: 34): catalogue; Platia <i>et al</i>. (2011: 207): comparison with other species; Atay <i>et al</i>. (2012: 110): distributional note, bionomics; Kabalak <i>et al</i>. (2013: 88): distributional map, key, bionomics; Gülperçin & Tezcan (2016: 134, 138, 141): bionomics, distributional notes; Kabalak & Özbek (2018: 147, 159, 165): distributional note, taxonomic note, figures of characters of imago; Tarnawski <i>et al</i>. (2018: 118): catalogue; Etzler (2019: 307): checklist.</p>Published as part of <i>Kundrata, Robin, Németh, Tamás, Prosvirov, Alexander S. & Hoffmannova, Johana, 2021, Annotated catalogue of the click-beetle genus Elathous Reitter, 1890 (Coleoptera Elateridae: Dendrometrinae), including habitus photographs for all species, pp. 231-265 in Zootaxa 4995 (2)</i> on page 252, DOI: 10.11646/zootaxa.4995.2.2, <a href="http://zenodo.org/record/5056397">http://zenodo.org/record/5056397</a>
Elimination of the baseline distortions in WURST-CPMG static experiments
No full textInternational audienceThe WURST-CPMG pulse sequence enables: (i) observing very broad spectra due to WURST excitation, and (ii) increasing the S/N ratio due to CPMG acquisition. However, strong baseline distortions may be observed, which make the extraction of the tensor information difficult. We propose a slight modification of the sequence, WURST-CPMGM, in which we skip the first M echoes and we only acquire the following ones. This simple treatment mostly eliminates the strong background signal and the ring down effects, leading to a flat baseline
Do endogeic earthworms change plant competition? A microcosm study
No full textPlants compete for limited resources. Although nutrient availability for plants is affected by resource distribution and soil organisms, surprisingly few studies investigate their combined effects on plant growth and competition. Effects of endogeic earthworms (Aporrectodea jassyensis), root-knot nematodes (Meloidogyne incognita) and the spatial distribution of N-15 labelled grass litter on the competition between a grass (Lolium perenne), a forb (Plantago lanceolata) and a legume (Trifolium repens) were investigated in the greenhouse. Earthworms promoted N uptake and growth of L. perenne. Contrastingly, shoot biomass and N uptake of T. repens decreased in the presence of earthworms. P. lanceolata was not affected by the earthworms. We suggest that earthworms enhanced the competitive ability of L. perenne against T. repens. Nematodes increased the proportion of litter N in each of the plant species. Litter distribution (homogeneous vs. patch) did not affect the biomass of any plant species. However, P. lanceolata took up more N-15, when the litter was homogeneously mixed into the soil. The results suggest that endogeic earthworms may affect plant competition by promoting individual plant species. More studies including decomposers are necessary to understand their role in determining plant community structure
Earthworms and litter distribution affect plant-defensive chemistry
No full textStudies on plant-defensive chemistry have mainly focused on plants in direct interaction with aboveground and occasionally belowground herbivores and pathogens. Here we investigate whether decomposers and the spatial distribution of organic residues in soil affect plant-defensive chemistry. Litter concentrated in a patch ( vs. homogeneously mixed into the soil) led to an increase in the aucubin content in shoots of Plantago lanceolata. Earthworms increased total phytosterol content of shoots, but only when the litter was mixed homogeneously into the soil. The phytosterol content increased and aphid reproduction decreased with increasing N concentration of the shoots. This study documents for the first time that earthworms and the spatial distribution of litter may change plant-defensive chemistry against herbivores
Effects of earthworms and organic litter distribution on plant performance and aphid reproduction
No full textHuman management practices and large detritivores such as earthworms incorporate plant litter into the soil, thereby forming a heterogeneous soil environment from which plant roots extract nutrients. In a greenhouse experiment we investigated effects of earthworms and spatial distribution of N-15-labelled grass litter on plants of different functional groups [Lolium perenne (grass), Plantago lanceolata (forb), Trifolium repens (legume)]. Earthworms enhanced shoot and root growth in L. perenne and P. lanceolata and N uptake from organic litter and soil in all plant species. Litter concentrated in a patch (compared with litter mixed homogeneously into the soil) increased shoot biomass and N-15 uptake from the litter in L. perenne and enhanced root proliferation in P. lanceolata when earthworms were present. Growth of clover (T. repens) was rather independent of the presence of earthworms and organic litter distribution: nevertheless, clover took up more nitrogen in the presence of earthworms and exploited more N-15 from the added litter than the other plant species. The magnitude of the effects of earthworms and organic litter distribution differed between the plant species, indicating different responses of plants with contrasting root morphology. Aphid (Myzus persicae) reproduction was reduced on P. lanceolata in the presence of earthworms. We suggest that earthworm activity may indirectly alter plant chemistry and hence defence mechanisms against herbivores
Wurst: a protein threading server with a structural scoring function, sequence profiles and optimized substitution matrices
No full textWurst is a protein threading program with an emphasis on high quality sequence to structure alignments (http://www.zbh.uni-hamburg.de/wurst). Submitted sequences are aligned to each of about 3000 templates with a conventional dynamic programming algorithm, but using a score function with sophisticated structure and sequence terms. The structure terms are a log-odds probability of sequence to structure fragment compatibility, obtained from a Bayesian classification procedure. A simplex optimization was used to optimize the sequence-based terms for the goal of alignment and model quality and to balance the sequence and structural contributions against each other. Both sequence and structural terms operate with sequence profiles
Effects of belowground biota on primary and secondary metabolites in Brassica oleracea
No full textSoil organisms in direct and indirect interaction with plant roots affect aboveground herbivores, likely by inducing different plant responses. We investigated the combined effects of the root-knot nematode Meloidogyne incognita (in direct interaction with roots) and the endogeic earthworm Octolasion tyrtaeum (in indirect interaction with roots) on the performance of Brassica oleracea. Both earthworms and nematodes increased N uptake and shoot biomass of B. oleracea. Earthworm activity mobilized more soil N than litter N, and herbivory by nematodes tended to increase the microbial biomass in soil. Only the structural class of sulphur containing glucosinolates was affected by the soil organisms. Earthworms decreased glucoiberin concentrations in B. oleracea shoots. Glucoraphanin was affected by an interaction between earthworms and nematodes. [KEYWORDS: Brassica oleracea ; earthworms ; nematodes ; glucosinolates]
Die Regulation von Preadipocyte factor-1 bei Gestationsdiabetes mellitus und Präeklampsie
No full textAdipositas und die damit verbundenen Begleiterkrankungen zeigen einen deutlichen Anstieg der Prävalenz in der Bevölkerung. Auch für die Schwangerschaft gilt starkes Übergewicht als Risikofaktor für metabolische und vaskuläre Komplikationen wie Gestationsdiabetes mellitus (GDM) und Präeklampsie (PE). In den letzten 20 Jahren wurde eindrücklich nachgewiesen, dass eine Dysregulation von Fettzell-sezernierten Proteinen, sogenannten Adipokinen, ursächlich zu GDM und PE beitragen könnte. Zu Beginn der Dissertation lagen jedoch nur unzureichende Daten über die Regulation des Insulinresistenz-induzierenden, anti-adipogenen und anti-angiogenen Adipokins Preadipocyte factor-1 (Pref-1) bei GDM und PE vor. Die vorliegende Arbeit untersucht daher die Regulation von zirkulierendem Pref-1 bei GDM und PE sowie seine Expression in der Plazenta. Bei 74 Patientinnen mit GDM konnte kein signifikanter Unterschied der Pref-1 Konzentrationen (0.40 µg/l) verglichen zu 74 Gesunden (0.42 µg/l) (p = 0.655) festgestellt werden (Wurst U et al., Cytokine 2015; 71: 161–164). Es zeigte sich in der Kohorte eine unabhängige Assoziation zwischen Pref-1 und Schwangerschaftsalter bei der Blutentnahme, Triglyzeriden, Kreatinin, Body Mass Index und C reaktivem Protein (p < 0.05). In einer Studienkohorte von 51 Schwangeren mit PE wurden signifikant niedrigere Serumspiegel von Pref-1 (0.49 µg/l) im Vergleich zu 51 gesunden Schwangeren (0.68 µg/l) (p < 0.001) gemessen (Schrey S, Wurst U, et al., Cytokine 2015; 75: 338–343). In der multiplen Regressionsanalyse waren PE, Schwangerschaftsalter zum Zeitpunkt der Blutentnahme sowie zirkulierendes Leptin unabhängige Prädiktoren für Pref-1. Im peripartalen Zeitraum zeigte sich ein akuter und deutlicher Abfall von zirkulierendem Pref-1 im mütterlichen Blut und das Adipokin wurde immunhistochemisch im Plazentagewebe nachgewiesen. Die Daten dieser Studien sind vereinbar mit den Hypothesen, dass Pref-1 mit fortschreitender Schwangerschaft zunehmend produziert wird, die Plazenta zur Sekretion des Adipokins aktiv beiträgt sowie das Adipokin bei PE dysreguliert ist. Weiterführende Untersuchungen im Tiermodell sowie prospektive Studien sind notwendig, um die Signifikanz von Pref-1 bei GDM und PE näher zu untersuchen
Combined effects of earthworms and vesicular–arbuscular mycorrhizas on plant and aphid performance
No full textVesicular-arbuscular mycorrhiza (VAM) and earthworms are known to affect plant and herbivore performance. However, surprisingly few studies have investigated their interactions. In a glasshouse experiment we investigated the effects of earthworms (Aporrectodea caliginosa) and VAM (Glomus intraradices) on the growth and chemistry of Plantago lanceolata and the performance of aphids (Myzus persicae). Earthworms did not affect VAM root colonization. Earthworms enhanced shoot biomass, and VAM reduced root biomass. VAM increased plant phosphorus content, but reduced the total amount of N in leaves. Earthworms led to a preferential uptake of soil N compared with N-15 from the added grass residues in the absence of VAM. Earthworm presence reduced the concentration of catalpol. Earthworms and VAM combined accelerated the development of M. persicae, while the development tended to be delayed when only VAM or earthworms were present. We suggest that earthworms promote plant growth by enhancing soil N availability and may affect herbivores by influencing concentrations of secondary metabolites. VAM enhances the P uptake of plants, but presumably competes with plant roots for N
JOP822063_supplemental_material – Supplemental material for Acute alcohol effects on impulsive choice in adolescents
No full textSupplemental material, JOP822063_supplemental_material for Acute alcohol effects on impulsive choice in adolescents by Nadine Bernhardt, Elisabeth Obst, Stephan Nebe, Shakoor Pooseh, Friedrich M. Wurst, Wolfgang Weinmann, Michael N Smolka and Ulrich S Zimmermann in Journal of Psychopharmacology</p
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