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The Role of Endogenous Strigolactones and Their Interaction with ABA during the Infection Process of the Parasitic Weed Phelipanche ramosa in Tomato Plants

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    SYSNO ASEP0476381
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleThe Role of Endogenous Strigolactones and Their Interaction with ABA during the Infection Process of the Parasitic Weed Phelipanche ramosa in Tomato Plants
    Author(s) Cheng, X. (US)
    Floková, Kristýna (UEB-Q) ORCID, RID
    Bouwmeester, H. (NL)
    Ruyter-Spira, C. (NL)
    Number of authors4
    Article number392
    Source TitleFrontiers in Plant Science. - : Frontiers Research Foundation - ISSN 1664-462X
    Roč. 8, MAR 24 (2017)
    Number of pages13 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordssuppression subtractive hybridization ; hemiparasite rhinanthus-minor ; putative defense genes ; box protein max2 ; abscisic-acid ; striga-hermonthica ; arabidopsis-thaliana ; orobanche-aegyptiaca ; medicago-truncatula ; expression analysis ; root parasitic plant ; strigolactone ; abscisic acid ; post-attachment resistance ; plant architecture
    Subject RIVEF - Botanics
    OECD categoryPlant sciences, botany
    Institutional supportUEB-Q - RVO:61389030
    UT WOS000397279900001
    DOI10.3389/fpls.2017.00392
    AnnotationThe root parasitic plant species Phelipanche ramosa, branched broomrape, causes severe damage to economically important crops such as tomato. Its seed germination is triggered by host-derived signals upon which it invades the host root. In tomato, strigolactones (SLs) are the main germination stimulants for P. ramosa. Therefore, the development of low SL-producing lines may be an approach to combat the parasitic weed problem. However, since SLs are also a plant hormone controlling many aspects of plant development, SL deficiency may also have an effect on post-germination stages of the infection process, during the parasite-host interaction. In this study, we show that SL-deficient tomato plants (Solanum lycopersicum, SlCCD8 RNAi lines), infected with pre-germinated P. ramosa seeds, display an increased infection level and faster development of the parasite, which suggests a positive role for SLs in the host defense against parasitic plant invasion. Furthermore, we show that SL-deficient tomato plants lose their characteristic SL-deficient phenotype during an infection with P. ramosa through a reduction in the number of internodes and the number and length of secondary branches. Infection with P. ramosa resulted in increased levels of abscisic acid (ABA) in the leaves and roots of both wild type and SL-deficient lines. Upon parasite infection, the level of the conjugate ABA-glucose ester (ABA-GE) also increased in leaves of both wild type and SL-deficient lines and in roots of one SL-deficient line. The uninfected SL-deficient lines had a higher leaf ABA-GE level than the wild type. Despite the high levels of ABA, stomatal aperture and water loss rate were not affected by parasite infection in the SL-deficient line, while in wild type tomato stomatal aperture and water loss increased upon infection. Future studies are needed to further underpin the role that SLs play in the interaction of hosts with parasitic plants and which other plant hormones interact with the SLs during this process.
    WorkplaceInstitute of Experimental Botany
    ContactDavid Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
    Year of Publishing2018
Number of the records: 1  

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