Macromolecules released by a plant growth-promoting rhizobacterium as elicitors of systemic resistance in tomato to bacterial and fungal pathogens. [Erratum: 2005 Mar., v. 153, no. 3, p. 188.]

• Published in: Journal of phytopathology Vol. 153; no. 2; pp. 120 - 123
• Main Authors: Romeiro, R.S, Lanna Filho, R, Vieira Junior, J.R, Silva, H.S.A, Baracat-Pereira, M.C, Carvalho, M.G
• Format: Journal Article
• Language: English
• Published: Berlin, Germany Blackwell Verlag GmbH 01-02-2005; Blackwell
• Subjects: Alternaria solani; Bacillus cereus; Biological and medical sciences; biological control; Corynespora cassiicola; disease resistance; elicitors; Fundamental and applied biological sciences. Psychology; Fungal plant pathogens; induced systemic resistance; macromolecules; Phytopathology. Animal pests. Plant and forest protection; plant growth-promoting rhizobacteria; plant pathogenic bacteria; plant pathogenic fungi; Pseudomonas syringae pv; Pseudomonas syringae pv. tomato; rhizobacteria; Rhizobium; Solanum lycopersicum var. lycopersicum; systemic acquired resistance; tomato; tomatoes; Xanthomonas campestris pv; Xanthomonas campestris pv. vesicatoria; macromolecules; Plant pathology; Microbiology; Plant pathogen; Xanthomonas campestris pv; biological control; tomato; Elicitor; Pseudomonas syringae pv; Fungi; Resistance; rhizobacteria; Alternaria solani; Bacillus cereus; Vegetable crop; Dicotyledones; Angiospermae; Lycopersicon esculentum; induced systemic resistance; Bacteria; Spermatophyta; Solanaceae; elicitors; Thallophyta
• ISSN: 0931-1785; 1439-0434
• DOI: 10.1111/j.1439-0434.2005.00941.x

One of 500 rhizobacteria isolated from soil, rhizosphere and rhizoplane of healthy tomato plants was previously selected in laboratory, greenhouse and field tests as a good inducer of systemic resistance. This plant growth‐promoting rhizobacterium (PGPR) was identified as Bacillus cereus by fatty‐acid analysis. Bacillus cereus bacterial cells were removed from liquid culture by centrifugation and the supernatant repeatedly dialyzed (cut‐off = 12 000 daltons) against distilled water. Dialysates applied to roots protected tomato plants against leaf fungal and bacterial pathogens, evidence that macromolecules synthesized by the PGPR and released into the environment act as elicitors of systemic resistance.