Current Challenges in Introducing Beneficial Microorganisms into the Rhizosphere

Molecular Ecology of Rhizosphere Microorganisms: Biotechnology and the Release of GMOs

Volumn , Issue , 2007, Pages 1-18

  Weller, David M ^a   Thomashow, Linda S ^a  

^a AGRICULTURAL RESEARCH SERVICE   (United States)

Author keywords

Bacteria; Epidermal; P. fluorescens; Rhizosphere; Ultrastructure

Indexed keywords

EID: 84950274684     PISSN: None     EISSN: None     Source Type: Book    
DOI: 10.1002/9783527615810.ch1     Document Type: Chapter

References (111)

1. Kloepper, J. W., B. Schippers, and P.A.H.M. Bakker. Proposed elimination of the term en-dorhizosphere. Phytopathology. 82 (1992) 726-727.
2. Curl, E.A., and B. Truelove. The Rhizosphere, Springer-Verlag, Berlin 1986.
3. Foster, R.C., A.D. Rovira, and T.W. Cock. Ultrastructure of the root-soil interface. Am. Phytopathol. Soc, St. Paul. 1983.
4. Kloepper J.W., R. Lifshitz, M.N. Schroth. Pseudomonas inoculants to benefit plant production. In: ISI Atlas of Science. Institute for Scientific Information, Philadelphia 1988, pp. 60-64.
5. Schroth, M.N. and J.G. Hancock. Selected topics in biological control. Annu. Rev. Microbiol. 35 (1981) 453-476.
6. Schroth, M.N. and J.G. Hancock. Disease-suppressive soil and root colonizing bacteria. Science 216 (1982) 1376-1381.
7. Lugtenberg, B.J.J., L.A. de Weger, and J.W. Bennett. Microbial stimulation of plant growth and protection from disease. Current Opinion in Microbiology 2 (1991) 457-464.
8. O'Sullivan, D.J., and F. O'Gara. Traits of fluorescent Pseudomonas spp. involved in suppression of plant root pathogens. Microbiol. Rev. 56 (1992) 662-676.
9. Weller, D.M. Biological control of soilborne pathogens in the rhizosphere with bacteria. Ann. Rev. Phytopathol. 26 (1988) 379-407.
10. Salt, G.A. The increasing interest in "minor pathogen". In: B. Schippers and W. Gams (Eds.), Soil-Borne Plant Pathogens. Academic, London/New York/SanFrancisco 1979, pp. 209-227.
11. Schippers, B., A.W. Bakker, and P.A.H.M. Bakker. Interactions of deleterious and beneficial rhizosphere microorganisms and the effect of cropping practice. Ann. Rev. Phytopathol. 25 (1987) 339-358.
12. Suslow, TV., and M.N. Schroth. Role of deleterious rhizobacteria as minor pathogens in reducing crop growth. Phytopathology. 72 (1982) 111-115.
13. Parke, J.L. Root colonization by indigenous and introduced microorganisms. In: D.L. Keister and P.B. Cregan (Eds.), The rhizosphere and plant growth. Kluwer Academic Publishers, Dordrecht 1991, pp. 33-42.
14. Deacon, J.W. Significance of ecology in the development of biocontrol agents against soil-borne plant pathogens. Biocontrol Science and Technology I (1991) 5-20.
15. Lidded, CM., and J.L. Parke. Enhanced colonization of pea tap roots by a fluorescent pseudomonad biocontrol agent by water infiltration into soil. Phytopathology 79 (1989) 1327-1332.
16. Loper, J.E., C. Haack, M.N. Schroth. Population dynamics of soil pseudomonads in the rhizosphere of potato (Solanum tuberosum L.). Appl. Environ. Microbiol. 49 (1985) 416-422.
17. Suslow, TV. Role of root-colonizing bacteria in plant growth. In: M.S. Mount, G.H. Lacy (Eds.), Phytopathogenic Prokaryotes. Academic, London 1982, pp. 187-223.
18. Caesar, A.J., and T.J. Burr. Growth promotion of apple seedlings and root-stocks by specific strains of bacteria. Phytopathology 77(1987) 1583-1588.
19. Kloepper, J.W., and M.N. Scroth. Relationship of in vitro antibiosis of plant growth-promoting rhizobacteria to plant growth and the displacement of root microflora. Phytopathology 71 (1981) 1020-1024.
20. Yuen G.Y., M.N. Schroth. Interactions of Pseudomonas fluorescens strain E6 with ornamental plants and its effect on the composition of root-colonizing microflora. Phytopathology 76 (1986) 176-180.
21. Xu, G.-W., and D.C. Gross. Field evaluations of the interactions among fluorescent pseudomonads, Erwinia carotovora, and potato yields. Phytopathology 76 (1986) 423-430.
22. Bull, C.T., D.M. Weller, and L.S. Thomashow. Relationship between root colonization and suppression of Gaeumannomyces graminis vai.tritici by Pseudomonas fluorescens strain 2-79. Phytopathology 81 (1991) 954-959.
23. Howie, W.J., R.J. Cook, and D.M. Weller. Effects of soil matric potential and cell motility on wheat root colonization by fluorescent pseudomonads suppressive to take-all. Phytopathology 77 (1987) 286-292.
24. Bahme, J.B., and M.N. Schroth. Spatial-temporal colonization patterns of a rhizobacterium on underground organs of potato. Phytopathology 77 (1987) 1093-1100.
25. Bull, C.T. Wheat root colonization by disease-suppressive or nonsuppressive bacteria and the effect of population size on severity of take-all caused by Gaeumannomyces graminis var. tritici. M.S. Thesis, Wash. State University, Pullman, 1987, pp. 75.
26. Gutterson N., W. Howie, and T. Suslow. Enhancing effects of biocontrol agents by use of biotechnology. In: R.R. Baker and P.E. Dunn (Eds.), New Directions in biological control: Alternatives for suppressing agricultural pests and diseases. Alan R. Liss, Inc., New York 1990, pp. 749-765.
27. Seong, K-Y, M. Hofte, J. Boelens, and W. Verstraete. Growth, survival, and root colonization of plant growth beneficial Pseudomonas fluorescens ANP15 and Pseudomonas aeruginosa 7NSK2 at different temperatures. Soil Biol. Biochem. 23 (1991) 423-428.
28. Vandenhove, H., R. Merckx, H. Wilmots, and K. Vlassak. Survival of Pseudomonas fluorescens inocula of different physiological stages in soil. Soil Biol. Biochem. 23 (1991) 1133-1142.
29. Howie, W.J. Factors affecting colonization of wheat roots and suppression of take-all by pseudomonads antagonistic to Gaeumannomyces graminis var. tritici. Ph.D. Dissertation. Wash. State. Univ., Pullman, 1985.
30. Bowen, G.D., and A.D. Rovira. Microbial colonization of plant roots. Ann. Rev. Phytopathol. 14 (1976) 121-144.
31. Stephens, P.M., M. O'Sullivan, and F. O'Gara. Effect of bacteriophage on colonization of sugarbeet roots by fluorescent Pseudomonas spp. Appl. Environ. Microbiol. 53 (1987) 1164-1167.
32. Casida, L.E. Competitive ability and survival in soil of Pseudomonas strain 679-2, a dominant, nonobligate bacterial predator of bacteria. Appl. Environ. Microbiol. 58 (1992) 32-37.
33. Shikano, S., L.S. Luckinbill, and Y. Kurihara. Changes of traits in a bacterial population associated with protozoal predation. Microb. Ecol. 20 (1990) 75-84.
34. Kremer, R.J., M.F.T. Begonia, L. Stanley and E.T. Lanham. Characterization of rhizobacteria associated with weed seedlings. Appl. Environ. Microbiol. 56 (1990) 1649-1655.
35. Atkinson, T.O., J.L. Neal Jr. and R.I. Larson. Genetic control of the rhizosphere microflora of wheat. In: G.W. Bruehl (Ed.), Biology and control of soil-borne plant pathogens. Am. Phytopathol. Sot, St. Paul 1975, pp. 116-122.
36. Azad, H.R., J.R. Davis, W.C. Schnathorst and C.I. Kado. Relationship between rhizoplane and rhizosphere bacteria and verticillium wilt resistance in potato. Arch. Microbiol. 140 (1985) 347-351.
37. Miller, H.J., G. Henken, J.A. van Veen. Variation and composition of bacterial populations in the rhizospheres of maize, wheat, and grass cultivars. Can. J. Microbiol. 35 (1989) 656-660.
38. Weller, D.M. Effects of wheat genotype on root colonization by a take-all suppressive strain of Pseudomonas fluorescens. Phytopathology. 76 (1986) 1059 (Abstr.).
39. Weller, D.M. Colonization of wheat roots by a fluorescent pseudomonad suppressive to take-all. Phytopathology. 73 (1983) 1548-1553.
40. Mazzola, M. and R.J. Cook. Effects of fungal root pathogens on the population dynamics of biocontrol strains of fluorescent pseudomonads in the wheat rhizosphere. Appl. Environ. Microbiol. 57 (1991) pp. 2171-2178.
41. James, D.W. Jr., TV. Suslow, and K.E. Steinback. Relationship between rapid, firm adhesion and long-term colonization of roots by bacteria. Appl. Environ. Microbiol. 50 (1985) 392-397.
42. Anderson, A.J., P. Habibzadegah-Tari, and C.S. Tepper. Molecular studies on the role of a root surface agglutinin in adherence and colonization by Pseudomonas putida. Appl. Environ. Microbiol. 54 (1988) 375-380.
43. Tari, P.H., A.J. Anderson. Fusarium wilt suppression and agglutinability of Pseudomonas putida. Appl. Environ. Microbiol. 54 (1988) 2037-2041.
44. Buell, C.R., and A.J. Anderson. Genetic analysis of the aggA locus involved in agglutination and adherence of Pseudomonas putida, a beneficial fluorescent pseudomonad. Mol. Plant-Microbe Interact. 5 (1992) 154-162.
45. van Peer, R., H.L.M. Punte, L.A. de Weger, and B. Schippers. Characterization of root surface and endorhizosphere pseudomonads in relation to their colonization of roots. Appl. Environ. Microbiol. 56 (1990) 2462-2470.
46. Chao, W-L., R-K. Li, W-T Chang. Effect of root agglutinin of microbial activities in the rhizosphere. Appl. Environ. Microbiol. 54 (1988) 1838-1841.
47. De Mot, R., H. Joos, A. Van Gool, and J. Vanderleyden. Colonization of wheat roots by Pseudomonas fluorescens: Scanning electron microscopy and biochemical analysis. In: D.L. Keister and P.B. Cregan (Eds.), The rhizosphere and plant growth. Kluwer Academic Publishers, Dordrect, 1991.
48. De Mot, R., and J. Vanderleyden. Purification of a root-adhesive outer membrane protein of root-colonizing Pseudomonas fluorescens. FEMS Microbiology Letters. 81 (1991) 323-328.
49. De Mot, R., P. Proost, J. van Damme, and J. Vanderleyden. Homology of the root adhesin of Pseudomonas fluorescens OE 28.3 with porin F of P. aeroginosa and P. syringae. Mol. Gen. Genet. 231 (1992) 489-493.
50. Finnen, R.L., N.L. Martin, R.J. Siehnel, W.A. Woodruff, M. Rosok and R.E.W. Hancock. Analysis of the Pseudomonas aeruginosa major outer membrane protein OprF by use of truncated OprF derivatives and monoclonal antibodies. J. Bacteriol. 174 (1992) 4977-4985.
51. Douglas, C.J., W. Halperin, and E.W. Nester. Agrobacterium tumefaciens mutants affected in attachment to plant cells. J. Bacteriol. 152 (1982) 1265-1275.
52. Douglas, C.J., R.J. Staneloni, R.A. Rubin, E.W. Nester. Identification and genetic analysis of an Agrobacterium tumefaciens chromosomal virulence region. J. Bacteriol. 161 (1985) 850-860.
53. Thomashow, M.F., J.E. Karlinsey, J.R. Marks, R.E. Hurlbert. Identification of a new virulence locus in Agrobacterium tumefaciens that affects polysaccharide composition and plant cell attachment. J. Bacteriol. 169 (1987) 3209-3216.
54. Cangelosi, G.A., L. Hung, V. Puvanesarajah, G. Stacey, D.A. Ozga, J.A. Leigh, and E.W. Nester. Common loci for Agrobacterium tumefaciens and Rhizobium meliloti exopolysaccharide synthesis and their roles in plant interactions. J. Bacteriol. 169 (1987) 2086-2091.
55. Leigh, J.A., E.R. Signer and G.C. Walker. Exopolysaccharide-deficient mutants of Rhizobium meliloti that form ineffective nodules. Proc. Natl. Acad. Sci. USA 82 (1985) 6231-6235.
56. Waelkens, F., M. Maris, C. Verreth, J. Vanderleyden and A. Van Gool. Azospirillum DNA shows homology with Agrobacterium chromosomal virulence genes. FEMS Microbiol. Lett. 43 (1987) 241-246.
57. Dobereiner, J. and F.O. Pedrosa. Nitrogen-fixing bacteria in non-leguminous crop plants. Science Tech., Madison, 1987.
58. Michiels, K.W., J. Vanderleyden, A.P. Van Gool, and E.R. Signer. Isolation and characterization of Azospirillum brasilense loci that correct Rhizobium meliloti exoB and exoC mutations. J. Bacteriol. 170 (1988) 5401-5404.
59. Haahtela, K., and T.K. Korhonen. In vitro adhesion of Nrfixing enteric bacteria to roots of grasses and cereals. Appl. Environ. Microbiol. 49 (1985) 1186-1190.
60. Haahtela, K., E. Tarkka and T.K. Korhonen. Type 1 fimbria-mediated adhesion of enteric bacteria to grass roots. Appl. Environ. Microbiol. 49 (1985) 1182-1185.
61. Korhonen, T.K., E.-L. Nurmiaho-Lassila, T. Laakso and K. Haahtella. Adhesion of fimbriated nitrogen-fixing enteric bacteria to roots of grasses and cereals. Plant and Soil. 90 (1986) 59-69.
62. Korhonen, T.K., E. Tarkka, H. Ranta, and K. Haahtella. Type 3 fimbriae of Klebsiella sp.: molecular characterization and role in bacterial adhesion to plant roots. J. Bacteriol. 155 (1983) 860-865.
63. Vesper, S.J. Production of pili (fimbriae) by Pseudomonas fluorescens and correlation with attachment to corn roots. Appl. Environ. Microbiol. 53 (1987) 1397-1403.
64. Vesper, S.J. and W.D. Bauer. Role of pili (fimbriae) in attachment of Bradyrhizobium japonicum to soybean roots. Appl. Environ. Microbiol. 52 (1986) 134-141.
65. Vesper, S.J., N.S.A. Malik and W.D. Bauer. Transposon mutants of Bradyrhizobium japonicum altered in attachment to host roots. Appl. Environ. Microbiol. 53 (1987) 1959-1961.
66. Scher, EM., J.W. Kloepper, C. Singleton, I. Zaleska, and M. Laliberte. Colonization of soybean roots by Pseudomonas and Serratia species: relationship to bacterial motility, Chemotaxis, and generation time. Phytopathology. 78 (1988) 1055-1059.
67. De Weger, L.A., C.I.M. van der Vlugt, A.H.M. Wijfjes, P.A.H.M. Bakker, B. Schippers, B. Lugtenberg. Flagella of a plant-growth-stimulating Pseudomonas fluorescens strain are required for colonization of potato roots. J. Bacteriol. 169 (1987) 2769-2773.
68. Weller, D.M., and L.S. Thomashow. Advances in rhizobacteria for biocontrol. Current Opinion in Biotechnology. 4 (1993) 306-311.
69. Mazzola, M., R.J. Cook, L.S. Thomashow, D.M. Weller, and L.S. Pierson III. Contribution of phenazine antibiotic biosynthesis to the ecological competence of fluorescent pseudomonads in soil habitats. Appl. Environ. Microbiol. 58 (1992) 2616-2624.
70. Scher, F.M., J.W. Kloepper and CA. Singleton. Chemotaxis of fluorescent Pseudomonas spp. to soybean seed exudates in vitro and in soil. Can. J. Microbiol. 31 (1985) 570-574.
71. Heinrich, D., and D. Hess. Chemotactic attraction of Azospirillum lipoferum by wheat roots and characterization of some attractants. Can. J. Microbiol. 31 (1985) 26-31.
72. Ahmad, J.S., and R. Baker. Rhizosphere competence of TYichoderma harzianum. Phytopathology. 77 (1987) 182-189.
73. Ahmad, J.S., and R. Baker. Competitive saprophytic ability and cellulotytic activity of rhizosphere-competent mutants of THchoderma harzianum. Phytopathology. 77 (1987) 358-362.
74. Weller, D.M. Distribution of a take-all suppressive strain of Pseudomonas fluorescens on seminal roots of winter wheat. Appl. Environ. Microbiol. 48 (1984) 897-899.
75. Kluepfel, D.A., E.L. Kline, H.D. Skipper, T.A. Hughes, DJ. Gooden, D.J. Drahos, G.F. Barry, B.C. Hemming, and E.J. Brandt. The release and tracking of genetically engineered bacteria in the environment. Pythopathology. 81 (1991) 348-352.
76. Drahos, D.J., B.C. Hemming, and S. McPherson. Tracking recombinant organisms in the environment: β-galactosidase as a selectable non-antibiotic marker for fluorescent pseudomonads. Bio/Technology 4 (1986) 439-444.
77. Cook, R.J., D.M. Weller, P. Kovacevich, D. Drahos, B. Hemming, G. Barnes, and E.A. Pierson. Establishment, monitoring, and termination of field tests with genetically altered bacteria applied to wheat for biological control of take-all. In: The biosafety results of field tests of genetically modified plants and microorganisms. Agricultural Research Institute, Bethesda 1990, pp. 177-187.
78. Paulitz, T.C Effect of Pseudomonas putida on the stimulation of Pythium ultimum by seed volatiles of pea and soybean. Phytopathology. 81 (1991) 1282-1287.
79. Nelson, E.B., and A.P. Maloney. Molecular approaches for understanding biological control mechanisms in bacteria: studies of the interaction of Enterobacter cloacae with Pythium ultimum. Can. J. Plant Pathology. 14 (1992) 106-114.
80. Nelson, E.B. Exudate molecules initiating fungal responses to seeds and roots. Plant and Soil. 129 (1990) 61-73.
81. Wei, G., J.W. Kloepper, and S. Tuzun. Induction of systematic resistance of cucumber to Col-letotrichum orbiculare by select strains of plant growth-promoting rhizobacteria. Phytopathology. 81 (1991) 1508-1512.
82. van Peer, R., G.J. Niemann, and B. Schippers. Induced resistance and phytoalexin accumulation in biological control of fusarium wilt of carnation by Pseudomonas sp. strain WCS417r. Phytopathology. 81 (1991) 728-734.
83. Leong, J. Siderophores: their biochemistry and possible role in the biocontrol of plant pathogens. Annu. Rev. Phytopathol. 24 (1986) 187-209.
84. Howell, C.R., and R.D. Stipanovic. Suppression of Pythium ultimum-indnced damping-off of cotton seedlings by Pseudomonas fluorescens and its antibiotic, pyoluteorin. Phytopathology. 70 (1980) 712-715.
85. Howell, C.R., and R.D. Stipanovic. Control of Rhizoctonia solani on cotton seedlings with Pseudomonas fluorescens and with an antibiotic produced by the bacterium. Phytopathology. 69 (1979) 480-482.
86. Howie, W.J., and T.V. Suslow. Role of antibiotic biosynthesis in the inhibition of Pythium ultimum in the cotton spermosphere and rhizosphere by Pseudomonas fluorescens. Mol. Plant-Microbe Interact. 4 (1991) 393-399.
87. Thomashow, L.S., and D.M. Weller, Role of a phenazine antibiotic from Pseudomonas fluorescens in biological control of Gaeumannomyces graminis var. tritici. J. Bacteriol. 170 (1988) 3499-3508.
88. Cook, R.J., and D.M. Weller. Management of take-all in consecutive crops of wheat or barley. In: I. Chet (Ed.), Innovative approaches to plant disease control. John Wiley & Sons, Inc., New York 1986, pp. 41-76.
89. Pierson III, L.S., and L.S. Thomashow. Cloning and heterologous expression of the phenazine biosynthetic locus from Pseudomonas aureofaciens 30-84. Mol. Plant-Microbe Interact. 5 (1992) 330-339.
90. Pierson III, L.S., and V.D. Keppenne. Identification of a locus that acts in trans to stimulate phenazine gene expression in Pseudomonas aureofaciens 30-84. Abstract 197, 6th International Symposium on Molecular Plant-Microbe Interactions, Seattle, 1992.
91. Thomashow, L.S., D.W. Essar, D.K. Fujimoto, L.S. Pierson III, C. Thrane, and D.M. Weller. Genetic and biochemical determinants of phenazine antibiotic production in fluorescent pseudomonads that suppress take-all disease of wheat. In: E.W. Nester and D.P.S. Verma (Eds.), Advances in molecular genetics of plant-microbe interactions, Vol 2. Kluwer Academic Publishers, Dordrecht 1993, 535-541.
92. Thomashow, L.S., D.M. Weller, R.F. Bonsall and L.S. Pierson III. Production of the antibiotic Phenazie-l-Carboxylic acid by fluorescent Pseudomonas species in the rhizophere of wheat. Appl. environ, microbiol. 56 (1990) 908-912.
93. Haas, D., C. Keel, J. Laville, M. Maurhofer, T. Oberhansli, U. Schnider, C. Voisard, B. Wüthrich, and G. Defago. Secondary metabolites of Pseudomonas fluorescens strain CHA0 involved in the suppression of root diseases. In: H. Hennecke and D.P.S. Verma (Eds.), Advances in molecular genetics of plant-microbe interactions. Kluwer Academic Publishers, Dordrecht 1991, pp. 450-456.
94. Keel, C, U. Schnider, M. Maurhofer, C. Voisard, J. Laville, U. Burger, P. Wirthner, D. Haas, and G. Defago. Suppression of root diseases by Pseudomonas fluorescens CHA0: importance of the bacterial secondary metabolite 2,4-diacetylphloroglucinol. Mol. Plant-Microbe Interact. 5 (1992) 4-13.
95. Keel, C, P. Wirthner, T. Oberhansli, C. Voisard, U. Burger, D. Haas, and G. Defago. Pseudomonads as antagonists of plant pathogens in the rhizosphere: role of the antibiotic 2,4-diacetylphloroglucinol in the suppression of black root rot of tobacco. Symbiosis. 9 (1990) 327-341.
96. Voisard, C., C. Keel, D. Haas, and G. Defago. Cyanide production by Pseudomonas fluorescens helps suppress black root rot of tobacco under gnotobiotic conditions. EMBO J. 8 (1989) 361-358.
97. Maurhofer, M., C. Keel, U. Schnider, C. Voisard, D. Haas, and G. Defago. Influence of enhanced antibiotic production in Pseudomonas fluorescens strain CHA0 on its disease suppressive capacity. Phytopathology. 82 (1992) 190-195.
98. Vincent, M.N., L.A. Harrison, J.M. Brackin, P.A. Kovacevich, P. Mukerji, D.M. Weller, and E.A. Pierson. Genetic analysis of the antifungal activity of a soilborne Pseudomonas aureofaciens strain. Appl. Environ. Microbiol. 57 (1991) 2928-2934.
99. Harrison, L.A., L. Letendre, P. Kovacevich, E. Pierson, and D. Weller. Purification of an antibiotic effective against Gaeumannomyces graminis var. tritici produced by a biocontrol agent, Pseudomonas aureofaciens. Soil Biol. Biochem. 25 (1993) 215-221.
100. Fenton, A.M., P.M. Stephens, J. Crowley, M. O'Callaghan, and F. O'Gara. Exploitation of gene(s) involved in 2,4-diacetylphloroglucinol biosynthesis to confer a new biocontrol capability to a Pseudomonas strain. Appl. Environ. Microbiol. 58 (1992) 3873-3878.
101. Shanahan, P., D.J. O'Sullivan, P. Simpson, J.D. Glennon, and F. O'Gara. Isolation of 2,4-diacetylphloroglucinol from a fluorescent pseudomonad and investigation of physiological parameters influencing its production. Appl. Environ. Microbiol. 58 (1992) 352-358.
102. Kanner, D., N.N. Gerber, and R. Bartha. Pattern of phenazine pigment production by a strain of Pseudomonas aeruginosa. J. Bacteriol. 134 (1978) 690-692.
103. Thomashow, L.S., and Pierson III, L.S. Genetic aspects of phenazine antibiotic production by fluorescent pseudomonads that suppress take-all disease of wheat. In H. Hennecke and D.P.S. Verma (Eds.), Advances in molecular genetics of plant-microbe interactions. Kluwer Academic Publishers, Dordrecht 1991, 443-449.
104. Ownley, B.H., D.M. Weller, and J.R. Alldredge. Relation of soil chemical and physical factors with suppression of take-all by Pseudomonas fluorescens 2-79. In: C. Keel, B. Koller and G. Defago (Eds.), Plant growth-promoting rhizobacteria-progress and prospects. WPRS Bulletin, 1991/XIV/8, pp. 299-301.
105. Slininger, P.J., and M.A. Jackson. Nutritional factors regulating growth and accumulation of phenazine 1-carboxylic acid by Pseudomonas fluorescens 2-79. Appl. Microbiol. Biotechnol. 37 (1992) 388-392.
106. Bashan, Y. Migration of the rhizosphere bacteria Azospirillium brasilense and Pseudomonas fluorescens toward wheat roots in soil. J. Gen. Microbiol. 132 (1986) 3407-3414.
107. Osburn, R.M., M.N. Schroth, J.G. Hancock, and M. Hendson. Dynamics of sugar beet seed colonization by Pythium ultimum and Pseudomonas species: effects on seed rot and damping-off. Phytopathology. 79 (1989) 709-716.
108. Baker, C.A. and J.M.S. Henis. Commercial production and formulation of microbial biocontrol agents. In: R.R. Baker and P.E. Dunn (Eds.), New Directions in Biological Control: Alternatives for Suppressing Agricultural Pests and Diseases. Alan R. Liss, New York 1990, pp. 333-334.
109. Weller, D.M., and R.J. Cook. Suppression of take-all of wheat by seed treatments with fluorescent pseudomonads. Phytopathology. 73 (1983) 463-469.
110. Pierson, E.A., and D.M. Weller. Recent work on control of take-all of wheat by fluorescent pseudomonads. In: C. Keel, B. Koller and G. Defago (Eds.), Plant growth-promoting rhizobacteria-progress and prospects, WPRS Bulletin 1991/XIV/8, pp. 96-97.
111. Kerr, A. The impact of molecular genetics on plant pathology. Ann. Rev. Phytopathol. 25 (1987) 87-110.