Journal
CIENCIA E AGROTECNOLOGIA
Volume 32, Issue 3, Pages 731-739Publisher
UNIV FEDERAL LAVRAS-UFLA
DOI: 10.1590/S1413-70542008000300005
Keywords
endophytes; tomato; nitrogen fixation; Ralstonia solanacearum; Solanum lycopersicum
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Out of one hundred and fifty isolates of endophytic bacteria from leaves, stems and roots of healthy tomatoes (Solanum lycopersicum L.), fifty three showed ability to promote tomato plant growth, among these, ten isolates UFV-E17, UFV-E22, UFV-E25, UFV-E26, UFV-E27, Bacillus cereus (UFV-E29), UFV-E49, UFLA 06-LS, UFLA 08-LS and UFLA 11-LS, provided the largest plant growth promotion. Weekly assessment of plant height and number of leaves and leaflets were carried out during 45 days. After the sixth evaluation, the leaf area and the fresh and dry weight of the aerial part of plants and of the roots were measured. Isolate UFV-E49 provided the largest values of height, leaf area, number of leaves and fresh and dry weight of the aerial part of plants as well as the root. From the selected isolates, only two presented antimicrobial activity against Ralstonia solanacearum.
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