The phytopathogenic fungus Alternaria brassicicola: Phytotoxin production and phytoalexin elicitation

被引：80

作者：

Pedras, M. Soledade C. ^{[1
]}

Chumala, Paulos B. ^{[1
]}

Jin, Wei ^{[1
]}

Islam, Mohammed S. ^{[1
]}

Hauck, Dominic W. ^{[1
]}

机构：

[1] Univ Saskatchewan, Dept Chem, Saskatoon, SK S7N 5C9, Canada

来源：

PHYTOCHEMISTRY | 2009年 / 70卷 / 03期

基金：

加拿大创新基金会; 加拿大自然科学与工程研究理事会;

关键词：

Alternaria brassicicola; Brown mustard; Brassica juncea; Canola; Brassica napus; White mustard; Sinapis alba; Brassicaceae; Brassicicolin A; Brassicicene; Brassinin; Cyclobrassinin; Destruxin; Fusicoccane; Host-selective; Phytoalexin; Phytotoxin; Spirobrassinin; LEPTOSPHAERIA-MACULANS; ANTIFUNGAL ACTIVITY; BIOLOGICAL-ACTIVITY; GERMINATING SPORES; BLACKLEG FUNGUS; DESTRUXIN-B; HOST; DETOXIFICATION; TOXIN; BIOSYNTHESIS;

D O I：

10.1016/j.phytochem.2009.01.005

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The metabolites and phytotoxins produced by the phytopathogenic fungus Alternaria brassicicola (Schwein.) Wiltshire, as well as the phytoalexins induced in host plants, were investigated. Brassicicolin A emerged as the most selective phytotoxic metabolite produced in liquid cultures of A brassicicola and spirobrassinin as the major phytoalexin produced in infected leaves of Brassica juncea (whole plants). In detached infected leaves of B. juncea, the main component was N'-acetyl-3-indolylmethanamine, the product of detoxification of the phytoalexin brassinin by A. brassicicola. In addition, the structure elucidation of three hitherto unknown metabolites having a fusicoccane skeleton was carried out and the antifungal activity of several plant defenses against A. brassicicola was determined. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：394 / 402

页数：9

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