Early physiological and cytological events induced by wounding in potato tuber

Anna Adele Fabbri, Corrado Fanelli, Massimo Reverberi, Alessandra Ricelli, Emanuela Camera, Sandra Urbanelli, Annalisa Rossini, Mauro Picardo, Maria Maddalena Altamura

Research output: Contribution to journalArticle

Abstract

The response of potato tuber (Solanum tuberosum L. cv. Kennebec) to mechanical wounding was investigated at different times. Changes in the levels of indole-3-acetic acid (IAA), polyunsaturated fatty acids (PUFAs) and lipid hydroperoxides (LOOHs) were monitored up to 120 min after wounding and related to the cytological events occurring up to 24 h. Twenty minutes after injury, an increase in IAA and LOOH levels and a decrease in the levels of PUFAs was observed. Wounding induced mitoses in differentiated (parenchyma) cells starting at 120 min, and promoted an increase of mitotic activity in the meristematic cells (procambium and bud dome), after 360 min. The inhibition of the increase in LOOHs and IAA by lipoxygenase (LOX) inhibitors, as well as the ability of in vitro peroxidated linoleic acid to enhance IAA production, suggest a close relationship among lipoperoxidation, IAA and mitotic activity in the response of potato tuber cells to injury, resulting in a specific growth response, i.e. bud growth and periderm formation.

Original languageEnglish
Pages (from-to)1267-1275
Number of pages9
JournalJournal of Experimental Botany
Volume51
Issue number348
Publication statusPublished - Jul 2000

Keywords

  • Indole-3-acetic acid
  • Lipid hydroperoxides
  • Lipids
  • Mitosis
  • Wounding

ASJC Scopus subject areas

  • Plant Science

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  • Cite this

    Fabbri, A. A., Fanelli, C., Reverberi, M., Ricelli, A., Camera, E., Urbanelli, S., Rossini, A., Picardo, M., & Altamura, M. M. (2000). Early physiological and cytological events induced by wounding in potato tuber. Journal of Experimental Botany, 51(348), 1267-1275.