Influence of Light and Sucrose on N-Glucosyl Pyrazon Formation in Red Beet

The conversion of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) to N-chloro-4-phenyl-3(2H)-pyridazinone glucosamine (hereinafter referred to as N-glucosyl pyrazon) in intact seedlings and in leaf discs of red beets (Beta vulgaris L., var. Detroit Dark Red) was significantly greater in the l...

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Bibliographic Details
Published in:Weed science 1971-07, Vol.19 (4), p.406-409
Main Authors: Stephenson, G. R., Dilley, D. R., Ries, S. K.
Format: Article
Language:English
Subjects:
Beets
botany
Glucosides
Herbicides
Light
Luminous intensity
Metabolism
Plant Science and Plant Products
Plants
Pretreatment
Seedlings
Silica gel
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Summary:The conversion of 5-amino-4-chloro-2-phenyl-3(2H)-pyridazinone (pyrazon) to N-chloro-4-phenyl-3(2H)-pyridazinone glucosamine (hereinafter referred to as N-glucosyl pyrazon) in intact seedlings and in leaf discs of red beets (Beta vulgaris L., var. Detroit Dark Red) was significantly greater in the light than in the dark. Pyrazon conjugation with glucose was dependent on the carbohydrate status of the leaf tissue, since the formation of the N-glucoside in the dark was further reduced with dark pretreatment but could be restored to the level observed in the light by infiltrating the leaf discs with supplemental sucrose.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500049249