Biochemical and physiological aspects of developmental cycle of Colchicum autumnale L.

L. Franková, H. Komjáthyová, K. Bóka, O. Gašparíková, M. Pšenák

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This study was conducted to examine the individual developmental stages of Colchicum autumnale. We identified the sclerenchymatic tissue in the middle part of the protuberance. This tissue supports the function of protuberance as a kind of hollow diverticulum. On the boundary of the new corm and the shoot a meristematic layer was recognized. We assume that this abscission zone-like structure can initiate dying back of the above-ground part regularly at the end of annual life-cycle. The major part of starch is reutilized in the mother corm during the autumnal stage, supporting sprouting which takes place in the soil. Decline of starch content is paralleled by increasing of total amylolytic activity. From amylolytic enzymes α-amylase, β-amylase and α-glucosidase have been identified. The presence of pullulanase and starch phosphorylase was not observed. From free sugars glucose, fructose and sucrose were identified in corms. The level of sucrose increased significantly during winter season.

Original languageEnglish
Pages (from-to)509-516
Number of pages8
JournalBiologia Plantarum
Volume47
Issue number4
DOIs
Publication statusPublished - Dec 2003

Keywords

  • free sugars
  • geophyte
  • protuberance
  • starch
  • total amylolytic activity
  • α-amylase
  • α-glucosidase
  • β-amylase

ASJC Scopus subject areas

  • Plant Science
  • Horticulture

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