Production of cell wall hydrolyzing enzymes by barley aleurone layers in response to gibberellic Acid.
نویسندگان
چکیده
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.
منابع مشابه
Gibberellic Acid-induced synthesis of protease by isolated aleurone layers of barley.
The production of protease by isolated aleurone layers of barley in response to gibberellic acid has been examined. The protease arises in the aleurone layer and is mostly released from the aleurone cells. The courses of release of amylase and protease from aleurone layers, the dose responses to gibberellic acid and the effects of inhibitors on the production of both enzymes are parallel. As is...
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عنوان ژورنال:
- Plant physiology
دوره 58 3 شماره
صفحات -
تاریخ انتشار 1976