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植物-病原体相互作用:十二。悬浮培养大豆细胞对来自大豆疫霉菌真菌病原体的诱导物的反应。

Host-Pathogen Interactions: XII. Response of Suspension-cultured Soybean Cells to the Elicitor Isolated from Phytophthora megasperma var. sojae, a Fungal Pathogen of Soybeans.

机构信息

Department of Chemistry and Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Colorado 80302.

出版信息

Plant Physiol. 1976 May;57(5):775-9. doi: 10.1104/pp.57.5.775.

Abstract

The glucan elicitor isolated from the mycelial walls of Phytophthora megasperma var. sojae, the fungus which causes stem and root rot in soybeans, stimulates the activity of phenylalanine ammonia-lyase and the accumulation of glyceollin in suspension-cultured soybean cells. Nigeran, a commercially available fungal wall glucan, was the only other compound tested which has any activity in this system. Glyceollin is a phenylpropanoid-derived phytoalexin which is toxic to P. megasperma var. sojae. Evidence is presented to support the hypothesis that the action of elicitors in stimulating phytoalexin synthesis is not species or variety specific but, rather, is part of a general defensive response of plants.

摘要

从引起大豆根茎腐烂病的大豆疫霉(Phytophthora megasperma var. sojae)菌的菌壁中分离出的葡聚糖激发子,能刺激大豆悬浮细胞中苯丙氨酸解氨酶的活性和大豆苷元的积累。在该系统中,仅有另一种商品真菌细胞壁葡聚糖——尼日兰具有活性。大豆苷元是一种由苯丙烷衍生而来的植物抗毒素,对大豆疫霉(Phytophthora megasperma var. sojae)有毒性。本研究提供的证据支持了这样一种假说,即激发子刺激植物抗毒素合成的作用不是针对特定物种或品种,而是植物一般防御反应的一部分。

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