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Relationship of pectic enzyme activity to the development of Pythium ultimum on roots of Antirrhinum majus

Relationship of pectic enzyme activity to the development of Pythium ultimum on roots of Antirrhinum majus

Phytopathology 60(6): 943-950

ISSN/ISBN: 0031-949X

Culture filtrates of P. ultimum showed marked pectic enzyme activity and rapidly macerated susceptible but not tolerant seedling root tissue, tolerance being correlated with resistance to maceration. Presence of beta -sitosterol in the culture medium reduced pectic enzyme activity of the filtrate, coinciding with the appearance of oospores in the cultures. beta -sitositeroil, campesterol and stigmasterol were detected in the antirrhinum roots.

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Accession: 014639435

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