METABOLISM OF ARACHIDONIC-ACID INVOLVED IN ITS ELICITING ACTIVITY IN POTATO-TUBER

被引：15

作者：

CASTORIA, R ^{[1
]}

FANELLI, C ^{[1
]}

FABBRI, AA ^{[1
]}

PASSI, S ^{[1
]}

机构：

[1] OSPED S GALLICANO, IST FISIOTERAPICI OSPEDALIERI, I-00153 ROME, ITALY

来源：

PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY | 1992年 / 41卷 / 02期

关键词：

D O I：

10.1016/0885-5765(92)90005-G

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

A 5-lipoxygenase from potato converts arachidonic acid (AA) to the unstable and reactive intermediate 5-S-hydroperoxyeicosatetraenoic acid (5-S-HPETE) which, at a concentration of 1 μg per tuber slice, induces phytoalexin accumulation to higher levels than those induced by AA at 20 μg per slice. However the tissue browning elicited by the 5-S-HPETE was lower than that elicited by AA, indicating that 5-S-HPETE may account for phytoalexin induction but not for the whole browning process. GC-MS analyses of lipid extracts of potato tuber slices treated with 1-[14C]AA and other polyunsaturated fatty acids showed no incorporation of these acids into potato lipid fractions. © 1992.

引用

页码：127 / 137

页数：11

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