Trichoderma species diversity in rhizosphere soils and potential antagonism with Fusarium oxysporum

Abstract

In this study six different Trichoderma species were isolated form rhizosphere soils of paddy, banana, oil palm, rubber, vegetables and grass land soils. The species are T. harziaum, T. viride, T. koningii, T. asperrelum, and T. parareesei. The morphological study as pigmentation, colony growth and anatomical studies such as, conidiation appearances, size of conidia, conidiophores branching pattern, shapes of phialides, absent or present of chlamydiophores were carried out to identify the species of Trichoderma. The Trchoderma harzianum species were abundant in soil while T. viren was the second highest in the soil. All species showed the antagonistic activity against Fusarium oxysporum. While, T. parareesei showed the highest antagonistic 91.10 % activity against F. oxysporum, reported as best antagonism agent for phytopathogen.

In Vitro Biocontrol Evaluation of Some Selected Trichoderma Strains against the Root Pathogen Fusarium oxysporum of Hot Pepper (Capsicum annum L.) in Bure Woreda, Ethiopia

“…During the dual culture assay, the maximum antagonistic efficiency recorded was 93.57% from the TD7 strain, followed by 90.12% by TD1, and 89.45% by TD5. This finding is consistent with those of Naher et al [ 17 ], who isolated 16 Trichoderma isolates, of which T . parareesei strain TPE7, T .…”

“…To alleviate the effect of chemicals (e.g., fungicides), it is important to develop economically safe, long-lasting, and effective biocontrol methods for the control of plant diseases. Trichoderma species are one excellent model that has been used as effective soil biocontrol agents with significant antagonistic potential against a wide range of fungal phytopathogens [ 16 , 17 ].…”

“…Trichoderma species are one excellent model that has been used as effective soil biocontrol agents with significant antagonistic potential against a wide range of fungal phytopathogens [16,17].…”

Evaluation of native Trichoderma isolates for the management of sugarcane smut (Ustilago scitaminea) in sugar plantations of Ethiopia

“…This variation might probably be attributed to different factors that could be either intrinsic (nature of the fungi) or extrinsic (media, temperature, light, and humidity). Similar to the current study, other previous studies indicated the presence of differences in morphological and cultural features (fast growth, colony color, mycelial growth habit, and colony edge) as typical characteristics of different Trichoderma isolates and as preliminary differentiating criteria(Anwer et al, 2020;Naher et al, 2019).…”

Discovery of a Novel Glucuronan Lyase System in Trichoderma parareesei

“…Although many Trichoderma species are regarded as generalistic cosmopolitans (1), the majority of specialized ecological behaviors observed in this species is rooted in their fundamental nature as mycoparasites (1). T. parareesei is thus known to exert aggressive mycoparasitism and antagonistic action against various fungi, including phytopathogens such as Fusarium oxysporum (2), Rhizoctonia solani (2), and Botrytis cinerea (3,4).…”