אסיף מאגר המחקר החקלאי

β-Glucosidase activity is involved in scent production in narcissus flowers

Year:

1999

Source of publication :

Authors :

Volume :

147

Co-Authors:

Reuveni, M., Dept. of Ornamental Horticulture, ARO, Volcani Ctr., Hamakabim Rd., R., Bet-Dagan, Israel
Sagi, Z., Dept. of Ornamental Horticulture, ARO, Volcani Ctr., Hamakabim Rd., R., Bet-Dagan, Israel
Evnor, D., Dept. of Ornamental Horticulture, ARO, Volcani Ctr., Hamakabim Rd., R., Bet-Dagan, Israel
Hetzroni, A., Dept. of Agricultural Engineering, ARO, Volcani Ctr., Hamakabim Rd., R., Bet-Dagan, Israel

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Abstract:

Extrinsic environmental cues and intrinsic developmental stages of the flower control the production of scent from flowers. Flowers emit seem only when they are open; yet, the precursors for the aromatic compounds are also present in buds, stored as non-fragrant glycosides in the vacuole. We demonstrate that in Narcissus flowers scent emission is concurrent with an increase in the activity of β-glucosidase. The inhibition in vivo of β- glucosidase activity decreases scent emission from Narcissus flowers. The β- glucosidase activity was partially purified and the K(m), V(max) and inhibition by gluconic acid lactone was determined.

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