New phytotoxic butenolides produced bySeiridium cardinale,the pathogen of cypress canker disease |
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| Authors: | L. Sparapano A. Evidente A. Ballio A. Graniti G. Randazzo |
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| Affiliation: | (1) Dipartimento di Patologia vegetale, University of Bari, Bari, (Italy);(2) Dipartimento di Chimica organica e biologica, University of Naples, Naples, (Italy);(3) Istituto di Chimica biologica, La Sapienza' University of Rome, Rome, (Italy) |
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| Abstract: | Summary Two new butenolides, seiridin andiso-seiridin, were isolated from culture filtrates ofSeiridium cardinale, the pathogen of cypress canker, a destructive disease ofCupressus and relatedConiferae These metabolites were characterized as 3-methyl-4-(2-hydroxyheptyl)-2(5H)-furanone and its 4-(3-hydroxyheptyl) isomer, respectively. Chlorotic, and necrotic symptoms were produced on leaves of either host or non-host test plants by absorption of 0.3 mg/ml solutions of either compound. These also showed antibacterial activity.This study was supported in part by the National Research Council, Rome (special ad hoc project  Chimica fine e secondaria ) and in part by the Ministry of Education, Rome. |
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| Keywords: | Seiridium cardinale cypress canker seiridin iso-seiridin butenolides phytotoxins antibiotics |
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