Structural-functional changes in detached cucumber leaves, and modelling these by hormone-treated leaf discs

E. Kovács, E. Sárvári, P. Nyitrai, J. Darók, E. Cseh, F. Láng, Á Keresztes

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Senescence and rejuvenation were investigated in detached cucumber (Cucumis sativus L.) leaves after cultivation in nutrient solution for one week or four weeks. Rooting of the petiole (visible generally from the 7th day) elicited a combination of different morphological, anatomical, and physiological changes in the lamina. Extensive growth in area and thickness, extreme regreening, changes of chloroplast structure and activity, as well as the pattern of Chl-protein complexes were observed and compared either to the corresponding parameters of young detached leaves or mature attached leaves. These responses could be provoked separately by treating excised leaf discs with kinetin, benzyladenine, or indolylacetic acid. The hormones showed mutuality in their effects, benzyladenine being responsible for the growth of cells, while indolylacetic acid and kinetin promoted an increase in chlorophyll content. However, none of the treatments resulted in the growth of the chloroplasts in the leaf discs, which was only prominent in the rooting leaves.

Original languageEnglish
Pages (from-to)85-92
Number of pages8
JournalPlant Biology
Volume9
Issue number1
DOIs
Publication statusPublished - Jan 2007

Fingerprint

functional change
cucumbers
hormone
hormones
modeling
leaves
rooting
kinetin
chloroplast
benzyladenine
chloroplasts
acids
acid
Cucumis sativus
senescence
leaf blade
nutrient solutions
cell growth
chlorophyll
protein

Keywords

  • Chlorophyll
  • Chloroplast
  • Cucumis sativus L.
  • Cytokinins
  • Photosynthesis
  • Rejuvenation
  • Senescence

ASJC Scopus subject areas

  • Plant Science

Cite this

Structural-functional changes in detached cucumber leaves, and modelling these by hormone-treated leaf discs. / Kovács, E.; Sárvári, E.; Nyitrai, P.; Darók, J.; Cseh, E.; Láng, F.; Keresztes, Á.

In: Plant Biology, Vol. 9, No. 1, 01.2007, p. 85-92.

Research output: Contribution to journalArticle

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