Biological Control of Leaf Spot and Growth Promotion of Eucalyptus Plants by Trichoderma spp.

Filho, M. R. Carvalho; Martins, Irene; Peixoto, Gustavo Henrique Silva; Muniz, Paulo Henrique Pereira Costa; Carvalho, Daniel Diego Costa; Mello, S. C. M.

doi:10.5539/jas.v10n9p459

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…In the literature, there are numerous other studies evaluating fungi of the genus Trichoderma as a biocontrol agent of diseases, as promoter of growth of agricultural, or forest species, presenting promising results [25,[50][51][52][53][54][55][56][57][58]. The results for E. oleracea found in this work show that Trichoderma can contribute to the growth of plants of this palm tree, allowing that sustainable practices can be adopted in the preparation of seedlings of this species.…”

Section: Discussionmentioning

confidence: 77%

Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

et al. 2020

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The application of Trichoderma fungus can be used to obtain seedlings of higher quality for plantations. The objective of this study was to evaluate the effects of Trichoderma isolates on the germination and initial growth of açaí seedlings. Two trials were set up. In the laboratory, the seeds were inoculated in suspensions prepared with each of the isolates for 24 h, and they were arranged in trays containing filter paper in a completely randomized design with five replicates containing 50 seeds each. For the control, the seeds were submerged only in water. Part of the seedlings resulting from seeds treated and not treated with Trichoderma were transferred to bags containing forest soil and were submitted to seven modes of application of Trichoderma and kept in a nursery. The speed of germination and hypocotyl were not influenced by the biological treatment. The application of the different Trichoderma isolates positively influenced the height, collar diameter, number of leaves, root size, leaf area and root, and aerial part dry mass of the açaí seedlings. The application of the Trichoderma isolate TAM01 on the preplanting substrate and biweekly applications on the postplanting substrate was the combination that most positively influenced the development of açai seedlings.

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Section: Discussionmentioning

confidence: 77%

Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

et al. 2020

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“…The interaction between plants and endophytic microorganisms is complex [42]. Several factors, such as host species and cultivar, endophyte species and strain, inoculum concentration or method, developmental phase of the host plant, and abiotic conditions can influence the artificial introduction of entomopathogenic endophytes [30,[43][44][45].…”

Section: Discussionmentioning

confidence: 99%

Effects of Trichoderma strigosellum in Eucalyptus urophylla Development and Leaf-Cutting Ant Behavior

Batista

Silva

Nascimento

et al. 2021

JoF

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Fungal endophytes can protect plants against herbivory and be used to control leaf-cutting ants. In this study, we aimed to evaluate the potential of endophytic colonization of Eucalyptus urophylla by three filamentous fungal species and their influence on the plant development and foraging behavior of Atta sexdens. The study design was completely randomized and comprised a factorial scheme of 4 × 3, three antagonistic fungal species (Escovopsis sp., Metarhizium anisopliae, and Trichoderma strigosellum) of the leaf-cutting ant, and one control and three inoculation methods (conidial suspension via foliar spray [FS] and soil drench [SD] inoculation, and seedlings inoculated with mycelium [SWM]). The SWM method allowed T. strigosellum to colonize all plant organs, and these plants exhibited higher height, leaf number, shoot dry mass, and total dry mass than the ones subjected to the other inoculation methods. The SWM method increased the plant height than the control plants and those inoculated with Escovopsis sp. and M. anisopliae. Trichoderma strigosellum, previously isolated from soil, colonized E. urophylla plants and positively influenced their development, as demonstrated by the SWM method. Trichoderma strigosellum promoted the increase in E. urophylla height compared with when the FS and SD methods were used (by 19.62% and 18.52%, respectively). Our results reveal that A. sexdens workers preferentially began cutting the leaves from plants not previously colonized by T. strigosellum. This behavior can be explained by modifications in the phenotypic traits of the eucalyptus leaves.

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“…Consequently, disease control of these fungi becomes even more difficult. With regards to C. reteaudii, it is one of the most virulent fungal diseases affecting Eucalyptus trees (Pongpanich et al, 2010;Devi, 2011;Filho et al, 2018). However, disease management of this pathogen is still poorly understood, particularly after the application of biological agents.…”

Section: Discussionmentioning

confidence: 99%

In Vitro and In Vivo Inhibition of Cylindrocladium reteaudii by Essential Oils of Acorus calamus Rhizomes

Sintawarak¹,

Uthairatsamee²,

Keawgrajang³

2020

Environ. Nat. Resour. J.

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Cylindrocladium reteaudii (Bugnic.) Boesew. is a severe pathogen which can cause leaf blight disease in Eucalyptus seedlings in tropical countries. This study investigated the antifungal activity of essential oils extracted from Acorus calamus L. rhizomes in inhibiting the growth of C. reteaudii, both in in vitro and in vivo experiments. The extraction of essential oils from rhizomes was carried out by hydro-distillation technique and the in vitro antifungal testing was done by using the poisoned food technique. The results indicated that an essential oil concentration of 2,000 ppm can completely inhibit the fungal growth with a 50% inhibitory concentration value of 54.76 ppm. For the in vivo experiment, it was found that an essential oil concentration of 500 ppm and Captan® of 1,000 ppm were not significantly different in inhibiting the growth of C. reteaudii. However, these two treatments significantly inhibited the fungal growth (p<0.05) when compared with the control treatments. Physiological and anatomical characteristics were investigated to check for the antifungal activity after the application of essential oils. Results showed that essential oil spraying had no effect on the leaf transpiration rate and temperature of the Eucalyptus seedlings, but the incident disease ratio was high when an essential oil concentration of more than 1,500 ppm was applied. Therefore, it can be inferred that the essential oils from A. calamus rhizomes at an optimum concentration can be an efficient antifungal compound with a potential to control leaf and shoot blight diseases in Eucalyptus seedlings in a nursery.

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Biological Control of Leaf Spot and Growth Promotion of Eucalyptus Plants by Trichoderma spp.

Cited by 7 publications

References 28 publications

Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

Trichoderma Contributes to the Germination and Seedling Development of Açaí Palm

Effects of Trichoderma strigosellum in Eucalyptus urophylla Development and Leaf-Cutting Ant Behavior

In Vitro and In Vivo Inhibition of Cylindrocladium reteaudii by Essential Oils of Acorus calamus Rhizomes

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