Summary
Rhizobacteria applied into pathogen-free soil or peat vermiculite medium, were established in the rhizosphere of plants in population densities of up to 1.9×109 cfu/g. Pseudomonads induced up to 78% bigger roots in tomatoes rooted in water. Pythium-suppressive bacteria increased dry weight of either roots or shoots of tomato, pepper, melon or bean. Fusarium-suppressive bacteria increased emergence of tobacco, cucmber or radish by 10–31% and dry weight by up to 165%. Isolates of the tested bacteria varied in their ability to induce increased emergence and growth of the treated crops.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Baker R 1968 Mechanisms of biological control of soilborne pathogens. Annu. Rev. Phytopathol. 6, 263–294.
Baker R, Elad Y and Chet I 1984 The controlled experiment in the scientific method with special emphasis on biological control. Phytopathology 74, 1019–1021.
Scher F and Baker R 1980 Mechanisms of biological control in Fusarium-suppressive soil. Phytopathology 70, 412–417.
Chang Y, Chang Y, Baker R, Kleifeld O and Chet I 1986 Increased growth of plant induced by the biological control agent,Trichoderma harzianum. Plant Diseases 70, 145–148.
Elad Y and Baker R 1985 The role of competition for iron and carbon in suppression of chlamydospore germination ofFusarium spp. byPseudomonas spp. Phytopathology 75, 1053–1059.
Elad Y and Chet I 1986 The role of competition for nutrients in biocontrol of Pythium damping-off by bacteria. Phytopathology (In press).
Elad Y, Chet I and Katan J 1980Trichoderma harzianum: a biocontrol agent ofSclerotium rolfsii andRhizoctonia solati. Phytopathology 70, 119–121.
King J V, Campbell B A and Eagles B A 1948 Mineral requirements of fluorescein production byPseudomonas. Can. J. Res. 226, 514–519.
Kloepper J W, Leong J, Tientze M and Schroth M N 1980 Pseudomonas siderophores: a mechanism explaining disease-suppressive soils. Curr. Microbiol. 4, 317–320.
Kloepper J W and Schroth M N 1979 Plant growth promoting rhizobacteria: evidence that the mode of action involves root microflora interactions. Phytopathology 69, 1034.
Kloepper J W and Schroth M N 1981 Plant growth promoting rhizobacteria and plant growth under gnotobiotic conditions. Phytopathology 71, 642–644.
Reed R W and Reed G B 1948 Drop plate method of counting viable bacteria. Can. J. Res. Sect. E. Med. Sci. 26, 317–326.
Salt G A 1978 The increasing interest in “minor pathogens”, pp. 289–312.In Soil-borne Plant Pathogens. Eds. B Schippers and W Gams. Academic Press, NY, 686 p.
Scher F M and Baker R 1982 Effect ofPseudomonas putida and a synthetic iron chelator on induction of soil suppressiveness to Fusarium-wilt pathogens. Phytopathology 72, 1567–1573.
Schroth M N and Hancock J G 1981 Disease suppressive and root colonizing bacteria. Science 216, 1376–1381.
Sneh B, Dupler M, Elad Y and Baker R 1984 Chlamydospore germination ofFusarium oxysporum f. sp.Cucumerinum as affected by fluorescent and lytic bacteria from a Fusarium suppressive soil. Phytopathology 78, 1115–1124.
Suslow J V, Kloepper J W, Schroth M N and Burr J J 1979 Beneficial bacteria enhance growth. Calif. Agric. 33, 15–17.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Elad, Y., Chet, I. & Baker, R. Increased growth response of plants induced by rhizobacteria antagonistic to soilborne pathogenic fungi. Plant Soil 98, 325–330 (1987). https://doi.org/10.1007/BF02378353
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF02378353