Počet záznamů: 1  

The role of auxins and cytokinins in the mutualistic interaction between Arabidopsis and Piriformospora indica

  1. 1.
    SYSNO ASEP0322258
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevThe role of auxins and cytokinins in the mutualistic interaction between Arabidopsis and Piriformospora indica
    Překlad názvuRole auxinů a cytokininů ve vzájemné interakci mezi Arabidopsis a Piriformospora indica
    Tvůrce(i) Vadassery, J. (DE)
    Ritter, C. (DE)
    Venus, Y. (DE)
    Camehl, I. (DE)
    Varma, A. (IN)
    Shahollari, B. (DE)
    Novák, Ondřej (UEB-Q) RID, ORCID, SAI
    Strnad, Miroslav (UEB-Q) RID, ORCID
    Ludwig-Mueller, J. (DE)
    Oelmueller, R. (DE)
    Zdroj.dok.Molecular Plant-Microbe Interactions. - : American Phytopathological Society - ISSN 0894-0282
    Roč. 21, č. 10 (2008), s. 1371-1383
    Poč.str.15 s.
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovaplant-microbe interaction ; Sebacinaceae ; LATERAL ROOT-FORMATION ; GENE-EXPRESSION
    Vědní obor RIVCE - Biochemie
    CEZAV0Z50380511 - UEB-Q (2005-2011)
    UT WOS000259330000010
    DOI10.1094/MPMI-21-10-1371
    AnotaceArabidopsis growth and reproduction are stimulated by the endophytic fungus Piriformospora indica. The fungus produces low amounts of auxins, but the auxin levels and the expression of auxin-regulated genes are not altered in colonized roots. Also, mutants with reduced auxin levels (ilr1-1, nit1-3, tfl2, cyp79 b2b3) respond to R indica. However, the fungus rescues the dwarf phenotype of the auxin overproducer sur1-1 by converting free auxin into conjugates, which also results in the downregulation of the auxin-induced IAA6 and the upregulation of the P indica-induced LRR1 gene. The fungus produces relatively high levels of cytokinins, and the cytokinin levels are higher in colonized roots compared with the uncolonized controls. trans-Zeatin cytokinin biosynthesis and the CRE1/AHK2 receptor combination are crucial for P indica-mediated growth stimulation, while mutants lacking cis-zeatin, impaired in other cytokinin receptor combinations, or containing reduced cytokinin levels respond to the fungus. Since root colonization is not affected in the cytokinin mutants, we propose that cytokinins are required for P indica-induced growth promotion. Finally, a comparative analysis of the phytohormone mutants allows the conclusion that the response to P indica is independent of the architecture and size of the roots.
    PracovištěÚstav experimentální botaniky
    KontaktDavid Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469
    Rok sběru2009
Počet záznamů: 1  

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