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Rhodococcus fascians Impacts Plant Development Through the Dynamic Fas-Mediated Production of a Cytokinin Mix

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    0349831 - UEB-Q 2011 RIV US eng J - Článek v odborném periodiku
    Pertry, I. - Václavíková, Kateřina - Gemrotová, Markéta - Spíchal, Lukáš - Galuszka, Petr - Depuydt, S. - Temmerman, W. - Stes, E. - De Keyser, A. - Riefler, M. - Biondi, S. - Novák, Ondřej - Schmülling, T. - Strnad, Miroslav - Tarkowski, Petr - Holsters, M. - Vereecke, D.
    Rhodococcus fascians Impacts Plant Development Through the Dynamic Fas-Mediated Production of a Cytokinin Mix.
    Molecular Plant-Microbe Interactions. Roč. 23, č. 9 (2010), s. 1164-1174 ISSN 0894-0282
    Grant CEP: GA MŠk(CZ) LC06034; GA ČR GD522/08/H003
    Výzkumný záměr: CEZ:AV0Z50380511
    Klíčová slova: LEAFY GALL FORMATION * CORYNEBACTERIUM-FASCIANS * ENDOGENOUS CYTOKININS
    Kód oboru RIV: ED - Fyziologie
    Impakt faktor: 4.010, rok: 2010

    The phytopathogenic actinomycete Rhodococcus fascians D188 relies mainly on the linear plasmid-encoded fas operon for its virulence. The bacteria secrete six cytokinin bases that synergistically redirect the developmental program of the plant to stimulate proliferation of young shoot tissue, thus establishing a leafy gall as a niche. A yeast-based cytokinin bioassay combined with cytokinin profiling of bacterial mutants revealed that the fas operon is essential for the enhanced production of isopentenyladenine, trans-zeatin, cis-zeatin, and the 2-methylthio derivatives of the zeatins. Cytokinin metabolite data and the demonstration of the enzymatic activities of FasD (isopentenyltransferase), FasE (cytokinin oxidase/dehydrogenase), and FasF (phosphoribohydrolase) led us to propose a pathway for the production of the cytokinin spectrum.
    Trvalý link: http://hdl.handle.net/11104/0189971
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