Bioassay for studying the role of siderophores in potato growth stimulation by Pseudomonas SPP in short potato rotations
- 1 January 1987
- journal article
- research article
- Published by Elsevier BV in Soil Biology and Biochemistry
- Vol. 19 (4), 443-449
- https://doi.org/10.1016/0038-0717(87)90036-8
Abstract
A bioassay is described for studying the mechanisms of growth stimulation by fluorescent pseudomonads using rooted potato stem cuttings. Root development of potato stem cuttings was inhibited in short potato-rotation soil compared to development in long potato-rotation soil. Treatment with Pseudomonas fluorescens isolate WCS374 or Pseudomonas putida isolate WCS358 increased root development in short potato-rotation soil, whereas siderophore-negative Tn5 transposon mutants of isolate WCS358 had no effect. Both siderophore-producing and siderophore-negative Tn5 mutants of isolate WCS358 could be recovered in similar numbers from the root systems. These results were obtained in a bioassay of 8 days duration. It is postulated that failure of siderophore-negative Tn5 transposon mutants of isolate WCS358 to induce growth stimulation demonstrates that siderophore production is a prerequisite for growth stimulation in short potato-rotation soil.This publication has 10 references indexed in Scilit:
- Microbial cyanide production in the rhizosphere in relation to potato yield reduction and Pseudomonas SPP-mediated plant growth-stimulationSoil Biology and Biochemistry, 1987
- The role of siderophores in potato tuber yield increase by Pseudomonas putida in a short rotation of potatoEuropean Journal of Plant Pathology, 1986
- Siderophores and outer membrane proteins of antagonistic, plant-growth-stimulating, root-colonizing Pseudomonas sppJournal of Bacteriology, 1986
- Potato growing in short rotations and the effect ofStreptomyces spp.,Colletotrichum coccodes, Fusarium tabacinum andVerticillium dahliae on plant growth and tuber yieldPotato Research, 1985
- Reduction of Yield Depressions in High Frequency Potato Cropping Soil after Seed Tuber Treatments with Antagonistic Fluorescent Pseudomonas spp.Journal of Phytopathology, 1983
- Selection of Antagonistic Fluorescent Pseudomonas spp. and their Root Colonization and Persistence following Treatment of Seed PotatoesJournal of Phytopathology, 1983
- A Broad Host Range Mobilization System for In Vivo Genetic Engineering: Transposon Mutagenesis in Gram Negative BacteriaBio/Technology, 1983
- Bacterial colonization of seminal wheat rootsSoil Biology and Biochemistry, 1980
- Enhanced plant growth by siderophores produced by plant growth-promoting rhizobacteriaNature, 1980