Antifungal activities of four fatty acids against Plant Pathogenic fungi

被引：181

作者：

Walters D. ^{[1
,3
]}

Raynor L. ^{[1
]}

Mitchell A. ^{[1
]}

Walker R. ^{[2
]}

Walker K. ^{[2
]}

机构：

[1] Department of Plant Biology, Scottish Agricultural College, Ayr Campus, Ayr KA6 5HW, Auchincruive Estate

[2] Department of Agronomy, Scottish Agricultural College, Bucksburn, Aberdeen AB21 9YA, Craibstone Estate

[3] Department of Plant Biology, SAC, Ayr Campus, Ayr KA6 5HW, Auchincruive Estate

来源：

Mycopathologia | 2004年 / 157卷 / 1期

关键词：

Antifungal activity; Fatty acids; Plant pathogenic fungi;

D O I：

10.1023/B:MYCO.0000012222.68156.2c

中图分类号：

学科分类号：

摘要：

The effect of the fatty acids linolenic acid, linoleic acid, erucic acid and oleic acid on the growth of the plant pathogenic fungi Rhizoctonia solani, Pythium ultimum, Pyrenophora avenae and Crinipellis perniciosa were examined in in vitro studies. Linolenic and linoleic acids exhibited activity against all of the fungi. However, whereas linolenic acid reduced mycelial growth of R. solani and C. perniciosa at 100 μM, the concentration had to be increased to 1000 μM before any effect on mycelial growth of P. ultimum and P. avenae was observed. Linoleic acid only reduced mycelial growth of R. solani, P. ultimum and P. avenae at 1000 μM, but led to a significant reduction in growth of C. perniciosa at 100 μM. In contrast, oleic acid had no significant effect on growth of R. solani or P. avenae, but gave significant reductions in mycelial growth of P. ultimum at 100 μM and reduced growth of C. perniciosa significantly at 1000 μM. All of the fatty acids reduced biomass production by all of the fungi significantly in liquid culture when added to the media at 100 μM. Erucic acid had no effect on fungal growth at any concentration examined. The antifungal activities exhibited by linolenic, linoleic and oleic acids may be useful in the search for alternative approaches to controlling important plant pathogens, such as those examined in this study.

引用

页码：87 / 90

页数：3

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