2. Articole

Permanent URI for this collectionhttps://msuir.usm.md/handle/123456789/13419

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Author: search.filters.author.Moldovan, CristinaSubject: search.filters.subject.antifungal activity

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    Aquatic basins – natural source of fungi with antifungal potential [Articol]
    (Editura USM, 2025) Sîrbu, Tamara; Moldovan, Cristina
    The study of aquatic fungi is an area of major interest in microbiology, due to their essential ecological role and valuable biotechnological potential. In this context, the purpose of the paper was to test 71 strains of aquatic micromycetes isolated from the water basins of Chisinau municipality, in order to evaluate their antifungal activity against phytopathogens of agricultural importance. The results showed that over 80% of the analysed strains showed high antifungal activity, the most effective being against Fusarium solani (93%) and Botrytis cinerea (85.9%). The Trichoderma genus was shown to have remarkable antifungal potential, with inhibition areas ranging from 16 to 40 mm. Following the tests, two strains - T. atrobruneum CNMN FD 25 and T. longibrachiatum CNMN FD 27 - were selected to obtain biopreparations, which demonstrated increased efficiency in inhibiting the development of phytopathogenic fungi.
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    Antagonistic activity of bacterial isolates against fusarium pathogens
    (CEP USM, 2024) Bîrsa, Maxim; Balan, Ludmila; Bogdan-Golubi, Nina; Moldovan, Cristina
    Actinobacteria and bacteria stored in NCNM were tested against F. oxysporum CNMN-FF-06 and F. solani CNMN-FF-07. In case of antagonistic activity against F. solani, results were much higher in comparison with F. oxysporum, ranged between 12.3 – 19.3 mm. The highest result of antifungal activity of bacteria against F. oxysporum was registered for the strain Bacillus velezensis CNMN-BB-16 (25.0 mm). For F. solani, the highest result was registered for the strain Micrococcus yunnanensis CNMN-BM-19 (33.0 mm). Results of the present research had shown that biocontrol agents can be used as an alternative for chemical pesticides utilized against phytopathogenic fungi.
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    Acțiunea antifungică a trichodermei atrobrunneum asupra unor fungi fitopatogeni cultivată în prezența unor substanțe utilizate în calitate de stimulatori în mediul de cultivare
    (CEP USM, 2024) Țurcan, Olga; Sîrbu, Tamara; Moldovan, Cristina; Chiselița, Oleg; Chiselița, Natalia
    The action of the cultivation medium and some substances used as stimulators on the productivity of the T. atrobrunneum CNMN FD 25 strain was studied. The obtained results allow us to summarize that of all the variations of media used for the cultivation of T. atrobrunneum, the M(Gl,Z) medium proved to be the most optimal, registering a productivity of 15 g/l. T. atrobrunneum cultivated on nutrient medium M (Gl, Z) has a strong antagonistic effect against phytopathogenic fungi: Alternaria alternata, Botrytis cinerea, Fusarium solani, Fusarium oxysporum, the diameter of the inhibition zones varied from 20 to 32 mm in relation to strain grown on M (Gl) and M (Z) medium, supplemented with iron compounds and exometabolites of S. cerevisiae.