Work

Studies on Metabolites of Alternaria kikuchiana Tanaka, a Phytopathogenic Fungus of Japanese Pear

Year: 1973

Type: article

Abstract: The structure of a metabolite, C10H10O5 (I), obtained as a weakly toxic substance from the culture filtrate of Alternaria kikuchiana, was determined as 3,6,8-trihydroxy-3-methyl-3,4- dihydroisocoumarin (Ia). Though three tautomeric forms—lactol form (Ia), keto form (Ib) and enol form (Ic) were possible for (I), it was found that the compound (I) existed as the lactol form (Ia) both in a crystalline state and in acetone, chloroform and methanol solutions. This metabolite gave weak necrotic symptom to pear leaves, but stimulated the root elongation of rice and radish seedlings (ca. 20~30%) at 5 ppm and also showed synergistic activity with gibberellin A3 on the stem elongation of rice seedlings (ca. 30%).

Source: Agricultural and Biological Chemistry

DOI: 10.1080/00021369.1973.10860946

Authors: Kiyoshi Kameda, Hiroo Aoki, Hiroshi Tanaka, Mitsuo Namiki

Institution: Nagoya University

Language: English

Topic: Microbial Natural Products and Biosynthesis

Subfield: Applied Microbiology and Biotechnology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Zero hunger

Open Access status: bronze

OpenAlex ID: W2093784844

FWCI: 1.143

Cites: 6

Cited by: 22

Related to: 10