Dual Mode of the Saponin Aescin in Plant Protection: Antifungal Agent and Plant Defense Elicitor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F19%3A00512060" target="_blank" >RIV/61389030:_____/19:00512060 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/19:73596501 RIV/25328859:_____/19:N0000013 RIV/60461373:22330/19:43918539 RIV/60461373:22340/19:43918539
Result on the web
<a href="http://doi.org/10.3389/fpls.2019.01448" target="_blank" >http://doi.org/10.3389/fpls.2019.01448</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fpls.2019.01448" target="_blank" >10.3389/fpls.2019.01448</a>
Alternative languages
Result language
angličtina
Original language name
Dual Mode of the Saponin Aescin in Plant Protection: Antifungal Agent and Plant Defense Elicitor
Original language description
Being natural plant antimicrobials, saponins have potential for use as biopesticides. Nevertheless, their activity in plant–pathogen interaction is poorly understood. We performed a comparative study of saponins' antifungal activities on important crop pathogens based on their effective dose (EC50) values. Among those saponins tested, aescin showed itself to be the strongest antifungal agent. The antifungal effect of aescin could be reversed by ergosterol, thus suggesting that aescin interferes with fungal sterols. We tested the effect of aescin on plant–pathogen interaction in two different pathosystems: Brassica napus versus (fungus) Leptosphaeria maculans and Arabidopsis thaliana versus (bacterium) Pseudomonas syringae pv tomato DC3000 (Pst DC3000). We analyzed resistance assays, defense gene transcription, phytohormonal production, and reactive oxygen species production. Aescin activated B. napus defense through induction of the salicylic acid pathway and oxidative burst. This defense response led finally to highly efficient plant protection against L. maculans that was comparable to the effect of fungicides. Aescin also inhibited colonization of A. thaliana by Pst DC3000, the effect being based on active elicitation of salicylic acid (SA)-dependent immune mechanisms and without any direct antibacterial effect detected. Therefore, this study brings the first report on the ability of saponins to trigger plant immune responses. Taken together, aescin in addition to its antifungal properties activates plant immunity in two different plant species and provides SA-dependent resistance against both fungal and bacterial pathogens.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10609 - Biochemical research methods
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Plant Science
ISSN
1664-462X
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
Nov 28
Country of publishing house
CH - SWITZERLAND
Number of pages
14
Pages from-to
1448
UT code for WoS article
000505261700001
EID of the result in the Scopus database
2-s2.0-85076921864