Phosphorylated and nucleotide sugar metabolism in relation to cell wall production in Avena coleoptiles treated with fluoride and peroxyacetyl nitrate
Coleoptile sections of Avena sativa L. were pretreated with sodium fluoride or peroxyacetyl nitrate at levels which inhibit auxin-induced growth but did not affect glucose-uptake or CO production when postincubated for 30 minutes in a /sup 14/C-glucose medium without auxin. Labeling of metabolites involved in cell wall synthesis was measured. Peroxyacetyl nitrate decreased labeling, and it was concluded that the pool size of uridine diphosphoglucose, sucrose, and cell wall polysaccharides decreased compared to control. The changes suggest that peroxyacetyl nitrate inactivated sucrose and cell wall synthesizing enzymes including cellulose synthetase and decreased cell growth by inhibiting production of cell wall constituents. Fluoride treatment had no effect on production of cell wall polysaccharides, with or without indoleacetic acid stimulation of growth. The only change after fluoride treatment was a decrease in uridine diphosphoglucose during incubation without indoleacetic acid, a decrease that disappeared when indoleacetic acid was present. It was concluded that some other aspect of cell wall metabolism, not determined here, was involved in fluoride-induced inhibition of growth. 16 references, 3 figures, 2 tables.
- Research Organization:
- Univ. of California, Riverside
- OSTI ID:
- 6134250
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 49; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
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Osmoregulation in the Avena coleoptile in relation to auxin and growth
Effect of peroxyacetyl nitrate on growth and cell wall metabolism of Avena coleoptile sections
Related Subjects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALDEHYDES
CARBOHYDRATES
CARBON 14 COMPOUNDS
CELL CONSTITUENTS
CELL WALL
CEREALS
DATA
DISACCHARIDES
ENZYMES
ESTERS
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
GLUCOSE
GRASS
GROWTH
HALIDES
HALOGEN COMPOUNDS
HEXOSES
INFORMATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LIGASES
METABOLISM
METABOLITES
MONOSACCHARIDES
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NUMERICAL DATA
OATS
OLIGOSACCHARIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PLANT GROWTH
PLANTS
SACCHARIDES
SACCHAROSE
TOXICITY
TRACER TECHNIQUES