Isolation and Characterization of Plant Growth Promoting Fungi from the Rhizosphere and Bulk Soil of Abelmouschus esculentus L.
Imad Ahmad Noor1, Abdullah1, Ihteram Ullah2*, Kashif ur Rahman4, Imtiaz Ahmed1 and Habib Ur Rahman3
1Department of Botany, Abdul Wali Khan University, Mardan, Pakistan; 2Department of Plant Breeding and Genetics, Gomal University, D.I. Khan, Pakistan; 3Department of Horticulture, Gomal University, Dera Ismail Khan, Pakistan; 4Department of Botany, University of Malakand, Pakistan.
*Correspondence | Ihteram Ullah, Department of Plant Breeding and Genetics, Gomal University, D.I. Khan, Pakistan; Email:
[email protected]
Figure 1:
Fungal strains a) ZIR1, b) ZIR4 and c) ZIR6 isolated from the rhizosphere, and strains d) ZIB1 and e) ZIB8 isolated from the bulk soil of the okra plant.
Figure 2:
Effects of isolated fungi on a) root length, b) shoot length, c) number of roots, d) fresh weight and e) dry weight of okra seedlings. Mean values (± standard deviation) are shown, with significant differences between treatments indicated by different letters (p < 0.05).
Figure 3:
Ability of fungal strains isolated from the rhizosphere and bulk soil of okra to release a) salicylic acid, b) sugars and c) proteins in the culture broth. The strains were cultivated for 10 days in Czapek liquid broth, and the culture filtrate was analyzed for the selected metabolites. Mean values (± standard deviation) are shown, with significant differences between strains indicated by different letters (p < 0.05).
Figure 4:
Effect of fungal strains isolated from the rhizosphere and bulk soil of okra on the endogenous levels of a) salicylic acid, b) sugars and c) proteins in okra seedlings grown for 30 days in fungal-inoculated soil. Mean values (± standard deviation) are presented. Significant differences between strains are indicated by different letters (p < 0.05).
Figure 5:
Figure shows mean salicylic acid concentrations (± standard deviation) in different parts of the okra plant. Significant differences among concentrations in various plant parts are indicated by different letters (p < 0.05).
Figure 6:
Pots containing okra seedlings in soil inoculated with fungi compared to those in non-inaculated soil. a) ZIR1 treated vs control seedling b) ZIR4 treated vs control seedling c) ZIR6 treated vs control seedling d) ZIB1 treated vs control seedling and e) ZIB8 treated vs control seedling of okra are shown for comparison.
Figure 7:
Interaction between ZIR6 and ZIB1 grown on PDA plate. Both the strains grow without any inhibition.