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New Insights Into the Activity of Apple Dihydrochalcone Phloretin: Disturbance of Auxin Homeostasis as Physiological Basis of Phloretin Phytotoxic Action

  1. 1.
    SYSNO ASEP0562133
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleNew Insights Into the Activity of Apple Dihydrochalcone Phloretin: Disturbance of Auxin Homeostasis as Physiological Basis of Phloretin Phytotoxic Action
    Author(s) Smailagić, D. (RS)
    Banjac, N. (RS)
    Ninković, S. (RS)
    Savić, J. (RS)
    Ćosić, T. (RS)
    Pěnčík, Aleš (UEB-Q) ORCID, RID, SAI
    Ćalić, D. (RS)
    Bogdanović, M. (RS)
    Trajković, M. (RS)
    Stanišić, M. (RS)
    Number of authors10
    Article number875528
    Source TitleFrontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
    Roč. 13, JUL 7 (2022)
    Number of pages17 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordsallelopathy ; ard ; auxin ; dihydrochalcones ; Malus × domestica Borkh. (apple) ; phloretin ; phytotoxicity ; polar auxin transport
    OECD categoryPlant sciences, botany
    Method of publishingOpen access
    Institutional supportUEB-Q - RVO:61389030
    UT WOS000831316000001
    EID SCOPUS85134519755
    DOI10.3389/fpls.2022.875528
    AnnotationApple species are the unique naturally rich source of dihydrochalcones, phenolic compounds with an elusive role in planta, but suggested auto-allelochemical features related to “apple replant disease” (ARD). Our aim was to elucidate the physiological basis of the phytotoxic action of dihydrochalcone phloretin in the model plant Arabidopsis and to promote phloretin as a new prospective eco-friendly phytotoxic compound. Phloretin treatment induced a significant dose-dependent growth retardation and severe morphological abnormalities and agravitropic behavior in Arabidopsis seedlings. Histological examination revealed a reduced starch content in the columella cells and a serious disturbance in root architecture, which resulted in the reduction in length of meristematic and elongation zones. Significantly disturbed auxin metabolome profile in roots with a particularly increased content of IAA accumulated in the lateral parts of the root apex, accompanied by changes in the expression of auxin biosynthetic and transport genes, especially PIN1, PIN3, PIN7, and ABCB1, indicates the role of auxin in physiological basis of phloretin-induced growth retardation. The results reveal a disturbance of auxin homeostasis as the main mechanism of phytotoxic action of phloretin. This mechanism makes phloretin a prospective candidate for an eco-friendly bioherbicide and paves the way for further research of phloretin role in ARD.
    WorkplaceInstitute of Experimental Botany
    ContactDavid Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
    Year of Publishing2023
    Electronic addresshttps://doi.org/10.3389/fpls.2022.875528
Number of the records: 1  

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