136 research outputs found
Leaf metabolome in arbuscular mycorrhizal symbiosis
No full textSchweiger R, Müller C. Leaf metabolome in arbuscular mycorrhizal symbiosis. Current Opinion in Plant Biology. 2015;26:120-126
Mining for treatment-specific and general changes in target compounds and metabolic fingerprints in response to herbivory and phytohormones in *Plantago lanceolata*
No full textSutter R, Müller C. Mining for treatment-specific and general changes in target compounds and metabolic fingerprints in response to herbivory and phytohormones in *Plantago lanceolata*. New Phytologist. 2011;191(4):1069-1082
Arbuscular mycorrhiza-induced shifts in foliar metabolism and photosynthesis mirror the developmental stage of the symbiosis and are only partly driven by improved phosphate uptake
No full textSchweiger R, Baier MC, Müller C. Arbuscular mycorrhiza-induced shifts in foliar metabolism and photosynthesis mirror the developmental stage of the symbiosis and are only partly driven by improved phosphate uptake. Molecular Plant-Microbe Interactions. 2014;27(12):1403-1412
High specificity in plant leaf metabolic responses to arbuscular mycorrhiza
No full textSchweiger R, Baier M, Persicke M, Müller C. High specificity in plant leaf metabolic responses to arbuscular mycorrhiza. Nature Communications. 2014;5(3886): 3886
Interactions between the jasmonic and salicylic acid pathway modulate the plant metabolome and affect herbivores of different feeding types
No full textSchweiger R, Heise A-M, Persicke M, Müller C. Interactions between the jasmonic and salicylic acid pathway modulate the plant metabolome and affect herbivores of different feeding types. Plant, Cell and Environment. 2014;37(7):1574-1585
Historische DACH-Spieledatenbank (Gamma-Version)
No full textvon Eugen Pfister, Aurelia Brandenburg, Adrian Demleitner, Addrich Mauch, Lukas Daniel Klausner, Ann-Kristin Potthast unter Mitarbeit von Marlon Bonsch, Lisa Bresgott, Rika Bunse, Clarissa Schiffer und Jan Stockschläger mit Unterstützung von Constantin Bintz, Lars Brandes, Noah Dix, Victoria Hou, Daniel Kaspereit, Petros Kiorpes-Betchawas, Simon Körner, Rabea Kuschel, Christian Mischke, Sebastian Müller, Tanja Pabst, Deniz Sargin und Ebru Yaylali Im Sommersemester 2022 habe ich am..
Aphid infestation leads to plant part-specific changes in phloem sap chemistry, which may indicate niche construction
No full textJakobs R, Schweiger R, Müller C. Aphid infestation leads to plant part-specific changes in phloem sap chemistry, which may indicate niche construction. New Phytologist. 2019;221(1):503-514.Summary
- Phloem sap quality can differ between and within plants, and affect the performance of aphids. In turn, aphid infestation may change the chemical composition and nutritional value of phloem sap. However, the effects of different aphid species on the overall phloem sap composition of distinct parts within plant individuals in relation to aphid performance remain unclear.
- To test the specificity of plant responses to aphids, we used two chemotypes of Tanacetum vulgare plants and placed the monophagous aphids Macrosiphoniella tanacetaria and Uroleucon tanaceti on different plant parts (stems close to the inflorescence, young and old leaves). Aphid population growth was determined and sugars, organic acids, amino acids and metabolic fingerprints of phloem exudates were analysed.
- Macrosiphoniella tanacetaria performed best on stems, whereas U. tanaceti performed best on old leaves, indicating differences in niche conformance. Aphid infestation led to distinct changes in the phloem exudate composition of distinct metabolite classes, differing particularly between plant parts but less between chemotypes.
- In summary, plant responses to aphids are highly specific for the chemotype, plant part, metabolite class and aphid species. These changes may indicate that aphids construct their own niche, optimizing the food quality on the plant parts they prefer
Unique metabolism of different glucosinolates in larvae and adults of a leaf beetle specialised on Brassicaceae
No full textFriedrichs J, Schweiger R, Müller C. Unique metabolism of different glucosinolates in larvae and adults of a leaf beetle specialised on Brassicaceae. Scientific Reports. 2022;12(1): 10905.Brassicaceae plants contain glucosinolates, which are hydrolysed by myrosinases to toxic products such as isothiocyanates and nitriles, acting as defences. Herbivores have evolved various detoxification strategies, which are reviewed here. Larvae of Phaedon cochleariae (Coleoptera: Chrysomelidae) metabolise hydrolysis products of benzenic glucosinolates by conjugation with aspartic acid. In this study, we investigated whether P. cochleariae uses the same metabolic pathway for structurally different glucosinolates, whether the metabolism differs between adults and larvae and which hydrolysis products are formed as intermediates. Feeding experiments were performed with leaves of watercress (Nasturtium officinale, Brassicaceae) and pea (Pisum sativum, non-Brassicaceae), to which glucosinolates with structurally different side chains (benzenic, indole or aliphatic) or their hydrolysis products were applied. Samples were analysed by UHPLC-QTOF-MS/MS or TD–GC–MS. The same aspartic acid conjugates as previously identified in larvae were also detected as major metabolites of benzenic glucosinolates in adults. Indol-3-ylmethyl glucosinolate was mainly metabolised to N-(1H-indol-3-ylcarbonyl) glutamic acid in adults and larvae, while the metabolism of 2-propenyl glucosinolate remains unclear. The metabolism may thus proceed primarily via isothiocyanates rather than via nitriles, while the hydrolysis occurs independently of plant myrosinases. A detoxification by conjugation with these amino acids is not yet known from other Brassicaceae-feeders
Niche realisation processes in insects: the impact of global change and relevance of individualisation
No full textSingh P, Schweiger R, Müller C. Niche realisation processes in insects: the impact of global change and relevance of individualisation. Entomologia Generalis. 2024;44:1377-1391.Insects represent a highly diverse and ecologically important taxon, making it imperative to understand their responses to global change. This review delves into the key processes underlying insect niche realisation processes, such as niche choice, niche conformance, and niche construction, as well as their interplay. We illustrate the role of these processes in ecological interactions and the impacts on fitness outcomes across diverse insect species. Notably, we illustrate how insects exhibit varying degrees of niche specialisation and flexibility in response to environmental cues, emphasising the dynamic nature of niche realisation processes. Furthermore, we examine the impact of global change on insect niche
realisation processes, highlighting examples of niche choice, conformance, and construction under, for example, anthropogenic land use change, temperature variation, and altered precipitation patterns. Our study underscores the importance of considering the relevance of intraspecific variation in niche realisation processes, as individuals differ in their responses, influencing species persistence. We discuss the limitations of traditional species-level niche assessments and advocate for the integration of individual-level niche analyses to accurately assess species’ responses to global change. By integrating insights from diverse insect taxa, we provide a framework for elucidating the strategies employed by insects to thrive amidst global change. Together, this review enhances our understanding of the diversity of niche realisation processes which may inform targeted conservation strategies to safeguard insect biodiversity in the face of ongoing global change
One Health – Global Health: Eine Gesundheit – eine Welt
No full textÖffentlicher Abendvortrag von Professor Dr. Dr. h.c. Thomas C. Mettenleiter im Rahmen der Veranstaltungsreihe „Globalisierung – Welt im Wandel" des Jungen Kollegs Greifswald Das One Health-Konzept erkennt an, dass die menschliche Gesundheit mit der Gesundheit von Tieren und der Umwelt direkt verbunden ist. Es basiert auf dem Konzept der ‚einen Medizin‘, d. h. der engen Interaktion von Human-, Tier- und Umweltmedizin. Damit wird eine ganzheitliche Betrachtungsweise realisiert, die disziplin- und sektorenübergreifend auf globaler Ebene wirkt. Das Konzept des One Health mit den Hauptthemen zoonotische Infektionen und Antibiotikaresistenzen hat Eingang in die G20-Schlusserklärung von Hamburg und in den aktuellen Koalitionsvertrag gefunden. In diesem Beitrag werden die Grundlagen erläutert und anhand von Beispielen aktueller Arbeiten in Deutschland und insbesondere am Friedrich-Loeffler-Institut, Bundesforschungsinstitut für Tiergesundheit auf der Insel Riems, die Relevanz des Ansatzes dargestellt
- …
