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(—)-Jasmonic Acid Accumulation in Tobacco Hypersensitive Response Lesions

January 1999 , Volume 12 , Number  1
Pages  74 - 78

Paul Kenton , 1 Luis A. J. Mur , 1 Rainer Atzorn , 2 Claus Wasternack , 2 and John Draper 1

1Institute of Biological Sciences, University of Wales-Aberystwyth, Aberystwyth, UK; 2Institut für Pflanzenbiochimie, POB 110432, D-06018 Halle/Saale, Germany

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Accepted 17 September 1998.

Tobacco infected with Pseudomonas syringae pv. phaseolicola undergoes a hypersensitive response (HR). Jasmonic acid (JA) accumulated within the developing lesion 3 to 9 h after infection and this accumulation preceded protein loss, cell death, and malondialdehyde accumulation. Accumulating JA consisted largely of the (—)-JA stereoisomer and was essentially restricted to the HR lesion.

© 1999 The American Phytopathological Society