Fluorescent Pseudomonas spp. as biocontrol agents against forage legume root pathogenic fungi

被引：52

作者：

Bagnasco, P ^{[1
]}

De la Fuente, L ^{[1
]}

Gualtieri, G ^{[1
]}

Noya, F ^{[1
]}

Arias, A ^{[1
]}

机构：

[1] Inst Invest Biol Clemente Estable, Montevideo 11600, Uruguay

来源：

SOIL BIOLOGY & BIOCHEMISTRY | 1998年 / 30卷 / 10-11期

关键词：

D O I：

10.1016/S0038-0717(98)00003-0

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Native fluorescent pseudomonads isolated from the rhizosphere of Lotus corniculatus were screened in vitro for their antagonistic activity against the phytopathogenic fungi Pythium ultimum and Rhizoctonia solani. About 12% of the bacterial isolates inhibited one or both fungi in vitro. Isolates which exhibited the greatest antagonistic activity were assayed in vivo against the pathogens. Three Pseudomonas fluorescens strains were selected from these assays: UP61, UP143 and VP148. These strains produced HCN and siderophores, but addition of iron to the medium did not affect the antagonistic activity. Lytic enzymes such as chitinase and beta-1,3-glucanase were not detected. The simultaneous inoculation of Pseudomonas strains and Rhizobium loti B816 did not affect nitrogen fixation efficiency in L. corniculatus plants. Sterile peal was successful as a carrier for these P. fluorescens strains. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1317 / 1322

页数：6

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