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The role of electrical and jasmonate signalling in the recognition of captured prey in the carnivorous sundew plant Drosera capensis
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SYSNO ASEP 0477122 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The role of electrical and jasmonate signalling in the recognition of captured prey in the carnivorous sundew plant Drosera capensis Author(s) Krausko, M. (SK)
Perůtka, M. (CZ)
Šebela, M. (CZ)
Šamajová, O. (CZ)
Šamaj, J. (CZ)
Novák, Ondřej (UEB-Q) RID, ORCID, SAI
Pavlovič, A. (SK)Number of authors 7 Source Title New Phytologist - ISSN 0028-646X
Roč. 213, č. 4 (2017), s. 1818-1835Number of pages 18 s. Language eng - English Country US - United States Keywords action potential ; carnivorous plant ; Drosera ; electrical signal ; enzymes ; jasmonates ; long-distance signalling ; sundew Subject RIV EB - Genetics ; Molecular Biology OECD category Plant sciences, botany R&D Projects LO1204 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEB-Q - RVO:61389030 UT WOS 000397238600027 EID SCOPUS 85006716570 DOI 10.1111/nph.14352 Annotation The carnivorous sundew plant (Drosera capensis) captures prey using sticky tentacles. We investigated the tentacle and trap reactions in response to the electrical and jasmonate signalling evoked by different stimuli to reveal how carnivorous sundews recognize digestible captured prey in their traps. We measured the electrical signals, phytohormone concentration, enzyme activities and Chla fluorescence in response to mechanical stimulation, wounding or insect feeding in local and systemic traps. Seven new proteins in the digestive fluid were identified using mass spectrometry. Mechanical stimuli and live prey induced a fast, localized tentacle-bending reaction and enzyme secretion at the place of application. By contrast, repeated wounding induced a nonlocalized convulsive tentacle movement and enzyme secretion in local but also in distant systemic traps. These differences can be explained in terms of the electrical signal propagation and jasmonate accumulation, which also had a significant impact on the photosynthesis in the traps. The electrical signals generated in response to wounding could partially mimic a mechanical stimulation of struggling prey and might trigger a false alarm, confirming that the botanical carnivory and plant defence mechanisms are related. To trigger the full enzyme activity, the traps must detect chemical stimuli from the captured prey. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2018
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