Salicylic acid and salicylic acid glucoside in xylem sap of Brassica napus infected with Verticillium longisporum
2009 | journal article. A publication with affiliation to the University of Göttingen.
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Salicylic acid and salicylic acid glucoside in xylem sap of Brassica napus infected with Verticillium longisporum
Ratzinger, A.; Riediger, N.; Tiedemann, A. von & Karlovsky, P. (2009)
Journal of Plant Research, 122(5) pp. 571-579. DOI: https://doi.org/10.1007/s10265-009-0237-5
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Details
- Authors
- Ratzinger, Astrid; Riediger, Nadine; Tiedemann, Andreas von ; Karlovsky, Petr
- Abstract
- Salicylic acid (SA) and its glucoside (SAG) were detected in xylem sap of Brassica napus by HPLC-MS. Concentrations of SA and SAG in xylem sap from the root and hypocotyl of the plant, and in extracts of shoots above the hypocotyl, increased after infection with the vascular pathogen Verticillium longisporum. Both concentrations were correlated with disease severity assessed as the reduction in shoot length. Furthermore, SAG levels in shoot extracts were correlated with the amount of V. longisporum DNA in the hypocotyls. Although the concentration of SAG (but not SA) in xylem sap of infected plants gradually declined from 14 to 35 days post infection, SAG levels remained significantly higher than in uninfected plants during the whole experiment. Jasmonic acid (JA) and abscisic acid (ABA) levels in xylem sap were not affected by infection with V. longisporum. SA and SAG extend the list of phytohormones potentially transported from root to shoot with the transpiration stream. The physiological relevance of this transport and its contribution to the distribution of SA in plants remain to be elucidated.
- Issue Date
- 2009
- Journal
- Journal of Plant Research
- Organization
- Fakultät für Agrarwissenschaften ; Department für Nutzpflanzenwissenschaften ; Abteilung Molekulare Phytopathologie und Mykotoxinforschung ; Abteilung Pflanzenpathologie und Pflanzenschutz
- ISSN
- 0918-9440
- Language
- English
- Sponsor
- Deutsche Forschungsgemeinschaft (DFG), Bonn, Germany