Research Article
Streptomyces rochei ACTA1551, an Indigenous Greek Isolate Studied as a Potential Biocontrol Agent against Fusarium oxysporum f.sp. lycopersici
Table 1
Streptomyces strains with antifungal activity originated from twelve studied Greek habitats.
| Sampling area | Number of isolates tested | Number (percentage) of isolates with antifungal activity against F. oxysporum DSM62059 |
| (A) Rhizosphere samples | | | (1) Rhizosphere of Ebenus sibthorpii | 28 | 3 (10.7%) | (2) Rhizosphere of Ceratonia siliqua | 42 | 1 (2.4%) | (3) Rhizosphere of Olea europea | 73 | 6 (8.2%) | (4) Rhizosphere of Pinus brutia from Crete | 20 | 3 (15.0%) | (5) Rhizosphere of evergreen woody shrubs from an island of the Aegean Sea | 21 | 5 (23.8%) | (6) Rhizosphere of evergreen woody shrubs from an island of the Ionian Sea | 28 | 0 (0.0%) | (7) Rhizosphere of coniferous trees (Arcadian forest) | 84 | 6 (7.1%) | Rhizosphere subtotals | 296 | 21 (7.0%) | (B) Nonrhizosphere samples | | | (8) Hot spring water of Thermopiles thermal springs (Viotia district) | 22 | 2 (9.1%) | (9) Sediment from a volcanic area (Santorini island—Aegean sea) | 5 | 1 (20%) | (10) Soil derived from cultivated area (Marathon, Attica district) | 179 | 10 (5.6%) | (11) Soil from protected natural forest area (Kessariani, Attica District) | 26 | 2 (7.7%) | Nonrhizosphere subtotals | 232 | 15 (6.0%) |
| Total | 528 | 39 (7.0%) |
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Antagonistic activity levels as expressed by the quotient of the inhibition zone area over streptomycete colony area (See Section 2.2).
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