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), Journal Name: Plant Physiol.; (United States) Vol. 68:3; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

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54 ENVIRONMENTAL SCIENCES
551000* -- Physiological Systems
59 BASIC BIOLOGICAL SCIENCES
CARBOHYDRATES
CELL CONSTITUENTS
CELL WALL
CHEMICAL ACTIVATION
CHEMICAL PROPERTIES
ENZYME INHIBITORS
ENZYMES
FOOD
HYDROLASES
LEAVES
ORGANIC COMPOUNDS
PEPTIDE HYDROLASES
PLANT CELLS
PLANTS
POLYSACCHARIDES
SACCHARIDES
SYCAMORES
TOMATOES
TREES
VEGETABLES