Sycamore cell wall polysaccharide and a chemically related tomato leaf polysaccharide possess similar proteinase inhibitor-inducing activities

Journal Article · Tue Sep 01 00:00:00 EDT 1981 · Plant Physiol.; (United States)

DOI:https://doi.org/10.1104/pp.68.3.616· OSTI ID:5993901

Ryan, C A ^[1]; Bishop, P; Pearce, G; Darvill, A G; McNeil, M; Albersheim, P

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1. Washington State Univ., Pullman

A large pectic polysaccharide, called rhamnogalacturonann I, that is solubilized by a fungal endo-..cap alpha..-1,4-polygalacturonase from the purified walls of suspension-cultured sycamore cells possesses proteinase inhibitor-inducing activity similar to that of the proteinase inhibitor-inducing factor, a pectic-like oligosaccharide fraction isolated from tomato leaves. This suggests that the proteinase inhibitor-inducing activity resides in particular polysaccharide fragments which can be released when plant cell walls are exposed to appropriate enzyme degradation as a result of either wounding or pest attack.

• DOE Contract Number: EY-76-S-02-1426
• OSTI ID: 5993901
• Journal Information: Plant Physiol.; (United States), Vol. 68:3
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
54 ENVIRONMENTAL SCIENCES
ENZYME INHIBITORS
CHEMICAL ACTIVATION
POLYSACCHARIDES
CHEMICAL PROPERTIES
CELL WALL
LEAVES
PEPTIDE HYDROLASES
PLANT CELLS
SYCAMORES
TOMATOES
CARBOHYDRATES
CELL CONSTITUENTS
ENZYMES
FOOD
HYDROLASES
ORGANIC COMPOUNDS
PLANTS
SACCHARIDES
TREES
VEGETABLES
551000* - Physiological Systems
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)