Host-pathogen interactions. VII. Isolation of a pathogen-synthesized fraction rich in glucan that elicits a defense response in the pathogen's host

Journal Article · Wed Jan 01 00:00:00 EST 1975 · Plant Physiol.; (United States)

OSTI ID:7354920

Anderson-Prouty, A J; Albersheim, P

A polysaccharide from the fungal pathogen Colletotrichum lindemuthianum causes browning and phytoalexin production when applied to the cut surfaces of bean (Phaseolus vulgaris) cotyledons and hypocotyls. The application of an amount of polysaccharide equivalent to less than 100 ng of glucose will elicit this response in the bean tissues. The polysaccharide has been isolated both from culture filtrates and from the mycelial walls of the fungus. Purification of the polysaccharide involved anion and cation exchange chromatography and gel filtration. The polysaccharide has an apparent molecular weight between 1,000,000 and 5,000,000 daltons, and consists predominantly of 3- and 4-linked glucosyl residues. (auth)

• Research Organization: Univ. of Colorado, Boulder
• OSTI ID: 7354920
• Journal Information: Plant Physiol.; (United States), Vol. 56
• Country of Publication: United States
• Language: English

Related Subjects

60 APPLIED LIFE SCIENCES
59 BASIC BIOLOGICAL SCIENCES
PHASEOLUS
PATHOLOGICAL CHANGES
FUNGI
HOST
ION EXCHANGE CHROMATOGRAPHY
MOLECULAR WEIGHT
PATHOGENESIS
PLANT DISEASES
POLYSACCHARIDES
PURIFICATION
SEPARATION PROCESSES
BIOMASS
CARBOHYDRATES
CHROMATOGRAPHY
DISEASES
ENERGY SOURCES
LEGUMINOSAE
ORGANIC COMPOUNDS
PLANTS
RENEWABLE ENERGY SOURCES
SACCHARIDES
553000* - Agriculture & Food Technology
550200 - Biochemistry