Phytotoxins from stemphylium botryosum: structural determination of stemphyloxin II, production in culture and interaction with iron

Shulamit Manulis; Yoel Kashman; David Netzert; Isaac Barash

doi:10.1016/S0031-9422(00)80518-X

Phytotoxins from stemphylium botryosum: structural determination of stemphyloxin II, production in culture and interaction with iron

Shulamit Manulis, Yoel Kashman, David Netzert, Isaac Barash

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Stemphyloxin II, a new phytotoxic compound isolated from liquid cultures of Stemphylium botryosum f. sp. lycopersici has been identified as a tricyclic compound derived from stemphyloxin I. Production of stemphyloxins I and II increases by 4-6 fold in the presence of succinate, fumarate or malonate. The secretion of stemphyloxins is iron-regulated and both compounds act as ferric chelates. The phytotoxicity of stemphyloxin I is approximately 100-fold higher than that of stemphyloxin II. The possible role of stemphyloxins in iron acquisition by S. botryosum is discussed.

Original language	English
Pages (from-to)	2193-2198
Number of pages	6
Journal	Phytochemistry
Volume	23
Issue number	10
DOIs	https://doi.org/10.1016/S0031-9422(00)80518-X
State	Published - 1984

Keywords

Stemphylium botryosum
iron.
phytotoxins
stemphyloxin I
stemphyloxin II

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10.1016/S0031-9422(00)80518-X

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abstract = "Stemphyloxin II, a new phytotoxic compound isolated from liquid cultures of Stemphylium botryosum f. sp. lycopersici has been identified as a tricyclic compound derived from stemphyloxin I. Production of stemphyloxins I and II increases by 4-6 fold in the presence of succinate, fumarate or malonate. The secretion of stemphyloxins is iron-regulated and both compounds act as ferric chelates. The phytotoxicity of stemphyloxin I is approximately 100-fold higher than that of stemphyloxin II. The possible role of stemphyloxins in iron acquisition by S. botryosum is discussed.",

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T1 - Phytotoxins from stemphylium botryosum

T2 - structural determination of stemphyloxin II, production in culture and interaction with iron

AU - Manulis, Shulamit

AU - Kashman, Yoel

AU - Netzert, David

AU - Barash, Isaac

PY - 1984

Y1 - 1984

N2 - Stemphyloxin II, a new phytotoxic compound isolated from liquid cultures of Stemphylium botryosum f. sp. lycopersici has been identified as a tricyclic compound derived from stemphyloxin I. Production of stemphyloxins I and II increases by 4-6 fold in the presence of succinate, fumarate or malonate. The secretion of stemphyloxins is iron-regulated and both compounds act as ferric chelates. The phytotoxicity of stemphyloxin I is approximately 100-fold higher than that of stemphyloxin II. The possible role of stemphyloxins in iron acquisition by S. botryosum is discussed.

AB - Stemphyloxin II, a new phytotoxic compound isolated from liquid cultures of Stemphylium botryosum f. sp. lycopersici has been identified as a tricyclic compound derived from stemphyloxin I. Production of stemphyloxins I and II increases by 4-6 fold in the presence of succinate, fumarate or malonate. The secretion of stemphyloxins is iron-regulated and both compounds act as ferric chelates. The phytotoxicity of stemphyloxin I is approximately 100-fold higher than that of stemphyloxin II. The possible role of stemphyloxins in iron acquisition by S. botryosum is discussed.

KW - Stemphylium botryosum

KW - iron.

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Phytotoxins from stemphylium botryosum: structural determination of stemphyloxin II, production in culture and interaction with iron

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