LACK OF A ROLE FOR FLUORESCENT SIDEROPHORE PRODUCTION IN THE BIOLOGICAL-CONTROL OF PYTHIUM DAMPING-OFF OF CUCUMBER BY A STRAIN OF PSEUDOMONAS-PUTIDA

被引：47

作者：

PAULITZ, TC ^{[1
]}

LOPER, JE ^{[1
]}

机构：

[1] USDA ARS,HORT CROPS RES LAB,CORVALLIS,OR 97330

来源：

PHYTOPATHOLOGY | 1991年 / 81卷 / 08期

关键词：

D O I：

10.1094/Phyto-81-930

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Hyphal growth but not sporangial germination of Pythium ultimum was inhibited by the synthetic iron chelating compound ethylenediamine (di-o-hydroxyphenylacetic acid) (EDDHA) on water agar and by strain N1R of Pseudomonas putida on King's medium B. Eight prototrophic derivatives of N1R (deficient in fluorescent siderophore [pyoverdine] biosynthesis [Pvd-]) were obtained by Tn5 mutagenesis. Pvd- derivatives did not inhibit hyphal growth of P. ultimum on King's medium B, but protected cucumber seedlings from Pythium damping-off in three different agriculture soils at levels statistically indistinguishable from the parental strain, N1R. Therefore, pyoverdine production by strain N1R was not critical to biocontrol of Pythium damping-off of cucumber under the conditions of this study.

引用

页码：930 / 935

页数：6

共 43 条

[1] IRON BOUND-SIDEROPHORES, CYANIC ACID, AND ANTIBIOTICS INVOLVED IN SUPPRESSION OF THIELAVIOPSIS-BASICOLA BY A PSEUDOMONAS-FLUORESCENS STRAIN [J].