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Photosynthetic responses of lettuce to downy mildew infection and cytokinin treatment
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SYSNO ASEP 0349657 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Photosynthetic responses of lettuce to downy mildew infection and cytokinin treatment Author(s) Prokopová, J. (CZ)
Špundová, M. (CZ)
Sedlářová, M. (CZ)
Husičková, A. (CZ)
Novotný, R. (CZ)
Doležal, Karel (UEB-Q) RID, ORCID
Nauš, J. (CZ)
Lebeda, A. (CZ)Source Title Plant Physiology and Biochemistry. - : Elsevier - ISSN 0981-9428
Roč. 48, č. 8 (2010), s. 716-723Number of pages 8 s. Language eng - English Country FR - France Keywords Bremia lactucae ; Benzylaminopurine ; Chlorophyll fluorescence imaging Subject RIV EB - Genetics ; Molecular Biology R&D Projects 1M06030 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GP522/02/D011 GA ČR - Czech Science Foundation (CSF) GD522/08/H003 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000280232800011 DOI 10.1016/j.plaphy.2010.04.003 Annotation Changes in primary metabolism of lettuce induced by compatible interaction with biotrophic oomycete pathogen Bremia lactucae under two intensities of illumination in the presence or absence of exogenous cytokinins were studied by chlorophyll fluorescence imaging. Thirteen days post-inoculation leaf discs infected by B. lactucae exhibited impairments of photosynthesis associated with biotrophic infection. Detected changes in photosynthetic parameters correlated with the leaf area colonized by the pathogen´s intercellular hyphae. Application of two cytokinins, previously shown to suppress B. lactucae sporulation if applied 24h prior to inoculation at a concentration of 200 μM, retarded the pathogen´s asexual reproduction with no apparent negative effects on host´s photosynthetic apparatus. However, long-lasting treatment of healthy tissues with this high concentration of exogenous cytokinin led to effects parallel to pathogenesis. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2011
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