TABLE 1.
Bioactivity of methanolic extracts of Nostoc strains ATCC 53789 and UTEX 2493
| Target organism | Bioactivity ofa:
|
|||
|---|---|---|---|---|
|
Nostoc strain ATCC 53789
|
Nostoc strain UTEX 2493
|
|||
| BE | WE | BE | WE | |
| Fungi | ||||
| Armillaria sp. | 0.25 g liter−1 | 1 g liter−1 | NA | NA |
| Colletotrichum coffeanum | NAb | NA | NA | NA |
| Colletotrichum trifolii | NA | NA | NA | NA |
| Fusarium solani | NA | NA | NA | NA |
| Fusarium oxysporum f. sp. melonis | 2.50 g liter−1 | 10 g liter−1 | NA | NA |
| Penicillium expansum | 0.25 g liter−1 | 10 g liter−1 | NA | NA |
| Phytophthora cambivora | 25 g liter−1 | 100 g liter−1 | NA | NA |
| Phytophthora cinnamomi | 25 g liter−1 | 100 g liter−1 | NA | NA |
| Rhizoctonia solani | 2.50 g liter−1 | 10 g liter−1 | NA | NA |
| Rosellinia sp. | 0.25 g liter−1 | 10 g liter−1 | 34.5 g liter−1 | 100 g liter−1 |
| Sclerotinia sclerotiorum | 0.25 g liter−1 | 1 g liter−1 | NA | NA |
| Verticillium albo-atrum | 2.50 g liter−1 | 10 g liter−1 | NA | NA |
| Bacteria | ||||
| Agrobacterium tumefaciens | NA | NA | NA | NA |
| Pseudomonas aeruginosa | NA | NA | NA | NA |
| Insects | ||||
| Galleria mellonella | NA | NA | NA | NA |
| Helicoverpa armigera | 2.20 mg cm−2 | NA | NA | NA |
| Nematodes | ||||
| Caenorhabditis elegans | 0.02 mg cm−2 | 1.82 mg cm−2 | NA | NA |
| Crustaceans | ||||
| Artemia salina | 0.27 g liter−1 | NA | NA | NA |
a
Expressed as grams (dry weight) of extracted biomass which inhibit the growth of the target organism in 1 liter of inoculated medium of at least 75% compared to the control after 24 h (bacteria and A. salina) or 72 h (fungi) of incubation, or expressed as milligrams (dry weight) of extracted biomass per square centimeter of agarized medium which causes 100% mortality.
b
NA, no activity.