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Cellular Base of Mint Allelopathy: Menthone Affects Plant Microtubules

Sarheed, Mohammed Mahmood 1; Rajabi, Fatemeh 1; Kunert, Maritta; Boland, Wilhelm; Wetters, Sascha 1; Miadowitz, Kai 1; Kaźmierczak, Andrzej; Sahi, Vaidurya Pratap 1; Nick, Peter 1
1 Karlsruher Institut für Technologie (KIT)


Plants can use volatiles for remote suppression of competitors. Mints produce essential oils, which are known to affect the growth of other plants. We used a comparative approach to identify allelopathic compounds from different Mints (genus Mentha, but also including Cat Mint, Nepeta cataria, and Corean Mint, Agastache rugosa, belonging to sisters clades within the Mentheae) using the standard cress germination assay as readout. To understand the mechanism behind this allelopathic effect, we investigated the response of tobacco BY-2 cell lines, expressing GFP-tagged markers for microtubules and actin filaments to these essential oils. Based on the comparison between bioactivity and chemical components, we identified menthone as prime candidate for the allelopathic effect, and confirmed this bioactivity targeted to microtubules experimentally in both, plant cells (tobaccoBY-2), and seedlings (Arabidopsis thaliana). We could show that menthone disrupted microtubules and induced mortality linked with a rapid permeabilization (less than 15 min) of the plasma membrane. This mortality was elevated in a tubulin marker line, where microtubules are mildly stabilized. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000126110
Veröffentlicht am 12.11.2020
DOI: 10.3389/fpls.2020.546345
Zitationen: 20
Web of Science
Zitationen: 18
Zitationen: 20
Cover der Publikation
Zugehörige Institution(en) am KIT Botanisches Institut (BOTANIK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1664-462X
KITopen-ID: 1000126110
Erschienen in Frontiers in plant science
Verlag Frontiers Media SA
Band 11
Seiten Art. Nr.: 546345
Vorab online veröffentlicht am 16.09.2020
Schlagwörter microtubules, monoterpenes, allelopathy, menthone, mint
Nachgewiesen in Dimensions
Web of Science
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