Pseudomonas fluorescens UP61 isolated from birdsfoot trefoil rhizosphere produces multiple antibiotics and exerts a broad spectrum of biocontrol activity

被引：29

作者：

La Fuente L.D. ^{[1
]}

Thomashow L. ^{[2
]}

Weller D. ^{[2
]}

Bajsa N. ^{[1
]}

Quagliotto L. ^{[1
]}

Chernin L. ^{[3
]}

Arias A. ^{[1
]}

机构：

[1] Lab. de Ecología Microbiana, Inst. Invest. Biol. Clemente Estable, Av. Italia 3318, CP 11600, M.

[2] Root Dis. and Biol. Contr. Res. Unit, Agricultural Research Service, U.S. Department of Agriculture, USA

[3] Dept. Plant Pathol. and Microbiol., Faculty of Agricultural, Food Environ. Qual. Sci., Hebrew U.

来源：

European Journal of Plant Pathology | 2004年 / 110卷 / 7期

关键词：

2-4-diacetylphloroglucinol; biological control; fluorescent pseudomonads; forage legumes; pyoluteorin; pyrrolnitrin;

D O I：

10.1023/B:EJPP.0000041569.35143.22

中图分类号：

学科分类号：

摘要：

The efficient use of rhizospheric microorganisms to control plant pathogens has been reported worldwide in different plants. Pseudomonas fluorescens UP61 is a biocontrol strain isolated from the rhizosphere of Lotus corniculatus (birdsfoot trefoil) from Uruguayan soils. This strain exhibited in vitro antagonistic activity against a broad spectrum of fungal and bacterial phytopathogens. It was an effective biocontrol agent in different hosts, reducing the disease incidence caused by Sclerotium rolfsii in beans and Rhizoctonia solani in tomato. P. fluorescens UP61 produced three antibiotics possibly involved in its biocontrol activity: 2,4-diacetylphloroglucinol, pyrrolnitrin and pyoluteorin. Molecular techniques such as 16S rDNA RFLP, RAPD and rep-PCR, and partial sequence of the phlD gene, revealed the similarity of UP61 with other biocontrol strains isolated worldwide that are able to produce these antibiotics.

引用

页码：671 / 681

页数：10

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