Trichoderma harzianum antagonistic activity and competition for seed colonization against seedborne pathogenic fungi of sunflower

dc.contributor.authorGüçlü, T.
dc.contributor.authorÖzer, Nuray
dc.date.accessioned2022-05-11T14:07:07Z
dc.date.available2022-05-11T14:07:07Z
dc.date.issued2022
dc.departmentFakülteler, Ziraat Fakültesi, Bitki Koruma Bölümü
dc.description.abstractThis study investigated the antagonistic effects of Trichoderma harzianum isolate (TRIC8) on mycelial growth, hyphal alteration, conidial germination, germ tube length and seed colonization by the seedborne fungal pathogens Alternaria alternata, Bipolaris cynodontis, Fusarium culmorum and F. oxysporum, the causes of seedling rot in over 30% of sunflowers. The antagonistic effect of TRIC8 on mycelial growth of pathogens was evaluated on dual culture that included two inoculation assays: inoculation of antagonist at 48 h before pathogen (deferred inoculation) and inoculation at the same time with pathogen (simultaneous inoculation). TRIC8 inhibited mycelial growth of the fungal pathogens between 70 center dot 67 and 76 center dot 87% with the strongest inhibition seen with deferred inoculation. Alterations in hyphae were observed in all pathogens. Conidial germination of F. culmorum was inhibited by most of the fungal pathogens (38 center dot 28%) by TRIC8. Inhibition of germ tube length by the antagonist varied from 31 center dot 83 to 37 center dot 67%. In seed colonization experiments, TRIC8 was applied in combination with each pathogen to seeds of a sunflower genotype that is highly tolerant to downy mildew. Seed death was inhibited by TRIC8 and the antagonist did not allow growth of A. alternata, B. cynodontis and F. culmorum on seeds and inhibited the growth of F. oxysporum at the rate of 58 center dot 32%.
dc.identifier.doi10.1111/lam.13698
dc.identifier.issn0266-8254
dc.identifier.issn1472-765X
dc.identifier.pmid35290679
dc.identifier.scopus2-s2.0-85126826692
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1111/lam.13698
dc.identifier.urihttps://hdl.handle.net/20.500.11776/4965
dc.identifier.wosWOS:000770985800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.institutionauthorGüçlü, T.
dc.institutionauthorÖzer, Nuray
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofLetters In Applied Microbiology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectantagonistic activity
dc.subjectseedborne fungi
dc.subjectSeed death
dc.subjectsunflower (Helianthus annuus L
dc.subject)
dc.subjectTrichoderma harzianum
dc.subjectBlack Mold Disease
dc.subjectAntifungal Compounds
dc.subjectBiological-Control
dc.subjectOnion
dc.subjectMycoparasitism
dc.subjectAccumulation
dc.subjectSporulation
dc.subjectAsperellum
dc.subjectManagement
dc.subjectResistance
dc.titleTrichoderma harzianum antagonistic activity and competition for seed colonization against seedborne pathogenic fungi of sunflower
dc.typeArticle

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