Work

Production of Cell Wall Hydrolyzing Enzymes by Barley Aleurone Layers in Response to Gibberellic Acid

Year: 1976

Type: article

Abstract: The cell walls of barley (Hordeum vulgare var. Himalaya) aleurone layers undergo extensive degradation during the tissue's response to gibberellic acid. Previous work had shown that these cell walls consist almost entirely of arabinoxylan. In this study we show that gibberellic acid stimulates endo-beta-1,4-xylanase activity in isolated aleurone layers. In addition, gibberellic acid enhances the activity of two glycosidases: beta-xylopyranosidase and alpha-arabinofuranosidase. No gibberellic acid-stimulated cellulase activity was detected. Germination studies showed a similar pattern of enzyme development in intact seeds.

Source: PLANT PHYSIOLOGY

DOI: 10.1104/pp.58.3.380

Authors: Lincoln Taiz, William A. Honigman

Institutions: University of California, Santa Cruz, University of California, Irvine

Language: English

Topic: Polysaccharides and Plant Cell Walls

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: bronze

Funder: National Science Foundation