Dr. Inga Mewis

Profil

Zusammenfassung

Dr. Inga Mewis erforscht, wie Pflanzen chemische Abwehrstoffe gegen Schädlinge und Umweltstress bilden und wie diese Stoffe durch Licht, Wasser und Insektenfraß beeinflusst werden. Sie verbindet dabei Molekularbiologie mit praktischen Anwendungen in Gewächshausproduktion und Pflanzenzüchtung, um Kulturpflanzen widerstandsfähiger und gesünder zu machen.

Skills

Name

Dr. Inga Mewis

Titel

Dr.

Fakultät

Lebenswissenschaftliche Fakultät

Institut

Albrecht Daniel Thaer-Institut für Agrar- und Gartenbauwissenschaften

Arbeitsgruppe

Fachgebiet Biosystemtechnik

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Zuletzt gescrapt

28.6.2026, 01:09:49

• Gezielte Salix-Züchtung und Analyse des chemischen Profils für den Einsatz von Weidenrinde in der Pharmazie

  Quelle ↗

  Förderer: Bundesministerium für Forschung, Technologie und Raumfahrt Zeitraum: 07/2017 - 08/2021 Projektleitung: Prof. Dr. rer. nat. Dr. rer. agr. Christian Ulrichs, Dr. Inga Mewis, Dr.rer.hort. Nadja Förster

• lnnovative LED-Systeme für eine qualitativ hochwertige und ganzjährige Gewächshausproduktion in Berlin/ Brandenburg

  Quelle ↗

  Förderer: Land Brandenburg Zeitraum: 02/2017 - 07/2020 Projektleitung: Prof. Dr. rer. nat. Dr. rer. agr. Christian Ulrichs, Prof. Dr. habil. Ralf Kätzel

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• Major Signaling Pathways Modulate Arabidopsis Glucosinolate Accumulation and Response to Both Phloem-Feeding and Chewing Insects

  2005

  PLANT PHYSIOLOGY · 445 Zitationen · DOI

  Plant responses to enemies are coordinated by several interacting signaling systems. Molecular and genetic studies with mutants and exogenous signal application suggest that jasmonate (JA)-, salicylate (SA)-, and ethylene (ET)-mediated pathways modulate expression of portions of the defense phenotype in Arabidopsis (Arabidopsis thaliana), but have not yet linked these observations directly with plant responses to insect attack. We compared the glucosinolate (GS) profiles of rosette leaves of 4-week-old mutant and transgenic Arabidopsis (Columbia) plants compromised in these three major signaling pathways, and characterized responses by those plants to feeding by two phloem-feeding aphids (generalist Myzus persicae and specialist Brevicoryne brassicae) and one generalist caterpillar species (Spodoptera exigua Hubner). Blocked JA signaling in coronatine-insensitive (coi1) and enhanced expression of SA-signaled disease resistance in hypersensitive response-like (hrl1) mutants reduced constitutive GS concentrations, while blocking SA signaling at the mediator protein npr1 mutant (NPR) increased them. There was no significant impact on constitutive GS contents of blocking ET signaling (at ET resistant [etr1]) or reducing SA concentrations (nahG transgene). We found increased GS accumulation in response to insect feeding, which required functional NPR1 and ETR1 but not COI1 or SA. Insect feeding caused increases primarily in short-chain aliphatic methylsulfinyl GS. By contrast, responses to exogenous JA, a frequent experimental surrogate for insect attack, were characterized by an increase in indolyl GS. Insect performance, measured as population increase or weight increase, was negatively related to GS levels, but we found evidence that other, ET-regulated factors may also be influential. Plant resistance to (consumption by) S. exigua was not related to insect growth because some plant chemistries inhibited growth while others inhibited feeding. These major signaling pathways modulate Arabidopsis GS accumulation and response to both phloem-feeding and chewing insects, often antagonistically; NPR appears to be central to these interactions. Our results indicate that exogenous signal application and plant consumption measures may not provide useful measures of plant responses to actual insect feeding.

• Gene expression and glucosinolate accumulation in Arabidopsis thaliana in response to generalist and specialist herbivores of different feeding guilds and the role of defense signaling pathways

  2006

  Phytochemistry · 304 Zitationen · DOI

• UV-B-Induced Secondary Plant Metabolites - Potential Benefits for Plant and Human Health

  2012

  Critical Reviews in Plant Sciences · 283 Zitationen · DOI

  Abstract Epidemiological studies have revealed an inverse association between the consumption of fruit, vegetables, and herbs and the risk of both cancer and cardiovascular disease. This protective effect is mostly due to secondary metabolites present in plant tissues. During the last decade, it has become increasingly clear that UV-B radiation is an important regulator of plant secondary metabolism. Low, ecologically-relevant UV-B levels trigger distinct changes in the accumulation of, among others, phenolic compounds, carotenoids and glucosinolates. Fundamental understanding of plant UV-B perception and responses opens up new opportunities for crop manipulation. Thus, targeted low dosage UV-B radiation treatments as emerging technology may be used to generate fruit, vegetables, and herbs enriched with secondary plant metabolites for either fresh consumption or as a source for functional foods and nutraceuticals, resulting in increased ingestion of these health-promoting substances. The UV-B induced accumulation of secondary plant metabolites is likely to have evolved as a plant defense response against harmful UV-B radiation. However, UV-B induced secondary metabolites also alter other trophic interactions, for example by altering plant herbivore resistance. Thus, UV-B driven metabolic changes in the plant's secondary metabolism have benefits for both ends of the bio-based food chain, i.e., for plants themselves as well as for humans. Keywords: carotenoidsfunctional foodglucosinolatesnutraceuticalsphenolic substancesplant defense

• Bionorica

  Gezielte Salix-Züchtung und Analyse des chemischen Profils für den Einsatz von Weidenrinde in der Pharmazie

  other

• Julius-Kühn-Institut – Bundesforschungsinstitut für Kulturpflanzen

  lnnovative LED-Systeme für eine qualitativ hochwertige und ganzjährige Gewächshausproduktion in Berlin/ Brandenburg

  other

• Technische Universität München

  Gezielte Salix-Züchtung und Analyse des chemischen Profils für den Einsatz von Weidenrinde in der Pharmazie

  university