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The Detection of Inhibitors of the Sclerotinia sclerotiorum (Lib.) de Bary Extracellular Proteinases in Sunflower
Author(s) -
Konarev AL. V.,
Kochetkov V. V.,
Bailey J. A.,
Shewry P. R.
Publication year - 1999
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.1999.147002105.x
Subject(s) - sclerotinia sclerotiorum , subtilisin , biology , sunflower , sclerotinia , microbiology and biotechnology , trypsin , biochemistry , enzyme , botany , horticulture
Water‐soluble protein fractions from leaves, seeds and heads of sunflower were shown to contain inhibitors of trypsin, chymotrypsin and extracellular proteinases from Sclerotinia sclerotiorum , a pathogen of sunflower, and Colletotrichum lindemuthianum. These included bifunctional inhibitors of trypsin and subtilisin. Comparison with the patterns of inhibition of standard proteinases indicated that the major extracellular proteinases of S. sclerotiorum are subtilisin‐like. It is speculated that the sunflower inhibitors play a role in conferring resistance to fungal infection.