ADVANCED JOURNAL OF PLANT BIOLOGY
Integrity Research Journals
ISSN: 2992-4928
Model: Open Access/Peer Reviewed
DOI: 10.31248/AJPB
Start Year: 2019
Email: ajpb@integrityresjournals.org
Studies on bioactivities of various parts of Murraya koeningii (l) spreng (curry tree) on fungal isolates from tomatoes
https://doi.org/10.31248/AJPB2021.015 | Article Number: 190E820E1 | Vol.3 (1) - February 2022
Received Date: 18 October 2021 | Accepted Date: 30 December 2021 | Published Date: 28 February 2022
Authors: Ijato, J. Y. , Olajide, O. O. and Ojo, B. O.
Keywords: Antifungal, fungal, Murraya koeningii, tomatoes.
Antifungal in vitro effects of the aqueous extracts of different parts (leaves, stem and root) of Murraya koenigii were evaluated against six rot fungi of tomato fruits namely, Aspergillus niger, Aspergillus flavus, Fusarium oxysporum, Mucor sp, Rhizoconia solani and Rhizopus stolonifer. These fungi were identified based on microscopic and macroscopic characteristics. Hot aqueous extracts of the plants were obtained using standard techniques. Sensitivity test was done using agar well diffusion method; the set up was incubated at room temperature (28 ± 2°C) for 24 hours. Development of zones of inhibition on the plates were observed and measured. The results showed that the tested extracts exhibited antifungal activities against the test (rot) organisms. The therapeutic values of various concentrations of aqueous Murraya koenigii extracts (5, 10, 15, 20 and 25%) were evaluated against fungal rot isolates. All the extracts showed significant (p<0.05) reduction of mycelia growth of the fungal isolates. Higher concentration of 25% favoured higher mycelial growth reduction. Maximum percentage inhibition was observed with the leaf extracts (F. oxysporum, 77.91%, followed by A. flavus, 77.10%), followed by the stem extract (A. flavus, 73.80%, followed by F. oxysporum, 71.43%) and lastly the root extract (A. flavus, 71.90%, followed by F. oxysporum, 67.10%). The extracts similarly inhibited vegetative growth and displayed significant effects on the morphology of the fungal hyphae. M. koeningii as the test plant is readily available as it offers potential safe alternative for use as biocide and it could be harnessed for effective management of post-harvest tropical fruit diseases.
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