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Leaf Spot of Hemp Dogbane Caused by Stagonospora apocyni , and its Phytotoxins
Author(s) -
Venkatasubbaiah P.,
Baudoin A. B. A. M.,
Chilton W. S.
Publication year - 1992
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 - 10.1111/j.1439-0434.1992.tb04316.x
Subject(s) - citrinin , biology , leaf spot , phytotoxin , mycotoxin , botany , fungus , liquid culture , weed , toxin , trichoplusia , microbiology and biotechnology , noctuidae , larva
Stagonospora apocyni causes a leaf spot disease on hemp dogbane ( Apocynum cannabinum L.). The fungus produced phytotoxins citrinin, mellein, tyrosol and α–acetylorcinol in liquid culture. All toxins caused necrosis when placed on leaves of hemp dogbane, and eight other weed species. All four toxins were non–specific phytotoxins. Citrinin showed antimicrobial properties against some bacteria and fungi.