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Peroxyacetyl nitrate-induced inhibition of cell wall metabolism

Journal Article · · J. Air Pollut. Control Assoc.; (United States)
; ;

Levels of PAN which inhibit oat coleoptile section growth reversibly, severely inhibit metabolism of cellulose and of cell wall noncellulosic polysaccharides. An enzyme in the coleoptile cell walls which hydrolyzes some of the noncellulosic glucan was partially inactivated by direct PAN treatment of homogenized cell wall. Treatment of intact cells by PAN also resulted in a partially inactivated enzyme. Coleoptile phosphoglucomutase was partially inactivated by treatment with PAN both in vitro and in vivo. After treatment of intact cells with PAN, phosphoglucomutase associated with subcellular particles was more severely inactivated than was a soluble enzyme. Uridine diphosphate glucose pyrophosphorylase from coleoptiles was inactivated by PAN in vitro but not in vivo. A particulate cellulose synthetase from coleoptiles was inactivated by PAN both in vitro and in vivo. Since cell wall biosynthesis and or degradation are needed for expansion, it is concluded that PAN inhibition of these enzymes may account for reduced cell growth.

Research Organization:
Univ. of California, Riverside
OSTI ID:
5564336
Journal Information:
J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 17:12; ISSN JPCAA
Country of Publication:
United States
Language:
English

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Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOSYNTHESIS
CARBOHYDRATES
CELL CONSTITUENTS
CELL WALL
CELLULOSE
CEREALS
COLEOPTILE
ENZYME INHIBITORS
ENZYMES
ESTERS
GRASS
GROWTH
INHIBITION
LIGASES
METABOLISM
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
OATS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXYACETYL NITRATE
PHOSPHORUS-GROUP TRANSFERASES
PHOSPHOTRANSFERASES
PLANT CELLS
PLANT GROWTH
PLANTS
POLYSACCHARIDES
SACCHARIDES
SYNTHESIS
TOXICITY
TRANSFERASES