Seeds coated with Trichoderma atroviride and soil amended with silicon improve the resistance of Lolium multiflorum against Pyricularia oryzae

Arellano, Alfonso D. Victoria; Silva, Gustavo Martins da; Guatimosim, Eduardo; Dorneles, Keilor da Rosa; Moreira, Luana Geri; Dallagnol, Leandro José

doi:10.1016/j.biocontrol.2020.104499

Cited by 10 publications

(7 citation statements)

References 48 publications

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“…multiflorum plants were pretreated with T . atroviride TR10, indicating that defence responses could be systemically induced (Victoria Arellano et al, 2021a, 2021b). Furthermore, plants grown in soil supplied with silicon show a similar resistance to plants treated with T .…”

Section: Discussionmentioning

confidence: 99%

“…atroviride when challenged with P . oryzae (Victoria Arellano et al, 2021a, 2021b). These results were confirmed in the present research under natural field conditions for grey leaf spot, indicating that any of these strategies could be employed for disease management, especially in the seed‐producing areas, where the entry of animals is limited and does not allow the reduction of the inoculum source.…”

Section: Discussionmentioning

confidence: 99%

“…oryzae infection by 50%, resulting in equal protection to that conferred by T . atroviride inoculation on seeds (Victoria Arellano et al, 2021a, 2021b). However, in this study under field conditions, a residual effect of the calcium silicate fertilization was also demonstrated that lasted for two seasons.…”

Section: Discussionmentioning

confidence: 99%

“…Seeds used in treatments b (T) and c (TSi) were inoculated with T . atroviride strain TR10, which was previously characterized by Victoria Arellano et al (2021b). The antagonist was grown for 10 days on potato dextrose agar at 25°C with a 12‐h photoperiod.…”

Section: Methodsmentioning

confidence: 99%

“…The results indicated that both strategies, alone or in combination, reduced the intensity of grey leaf spot due to potentiating of plant defences against P . oryzae (Victoria Arellano et al, 2021b).…”

Section: Introductionmentioning

confidence: 99%

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Silicon, biological seed treatment and cutting reduce the intensity of leaf spot diseases affecting Lolium multiflorum

et al. 2022

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Italian ryegrass is a major pasture crop cultivated mainly for feeding cattle in southern Brazil. The choice of crop is based on nutritional quality and the shortage of pastures that occur during the winter in the southernmost part of Brazil. In this region, the production of biomass and seeds are threatened by diseases, in particular fungal diseases that affect the foliage. In this study we identified and monitored the natural occurrence of a complex of leaf spotting diseases and evaluated the effects of combined management practices to reduce the intensity of foliar diseases: seed treatment with Trichoderma atroviride, soil amendment with silicon and cutting frequency (none, one or two cuts). Three diseases were present in a two‐season experiment: grey leaf spot (Pyricularia oryzae), brown leaf spot (Bipolaris sorokiniana) and parrot's eye leaf spot (Cercospora sp.). Grey leaf spot had the highest severity, regardless of treatment, during the first season, and was the only disease present in the following season. Grey leaf spot dominated, and plants receiving only one cut were more prone to P. oryzae infection. The treatments with silicon or T. atroviride reduced the relative disease by 40% to 80%, in relation to untreated and uncut regimes. This study showed the main leaf spot diseases associated with L. multiflorum. Moreover, it demonstrates for the first time in the region the effectiveness of reducing leaf spot via the application of silicon in the soil, inoculation of seeds with T. atroviride and managing the cutting regime.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silicon, biological seed treatment and cutting reduce the intensity of leaf spot diseases affecting Lolium multiflorum

et al. 2022

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Hydrogel capsules as new delivery system for Trichoderma koningiopsis Th003 to control Rhizoctonia solani in rice (Oryza sativa)

Cruz-Barrera,

Izquierdo-García,

Gómez-Marroquín

et al. 2024

World J Microbiol Biotechnol

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The incorporation of biological control agents (BCAs) such as Trichoderma spp. in agricultural systems favors the transition towards sustainable practices of plant nutrition and diseases control. Novel bioproducts for crop management are called to guarantee sustainable antagonism activity of BCAs and increase the acceptance of the farmers. The encapsulation in polymeric matrices play a prominent role for providing an effective carrier/protector and long-lasting bioproduct. This research aimed to study the influence of biopolymer in hydrogel capsules on survival and shelf-life of T. koningiopsis. Thus, two hydrogel capsules prototypes based on alginate (P1) and amidated pectin (P2), containing conidia of T. koningiopsis Th003 were formulated. Capsules were prepared by the ionic gelation method and calcium gluconate as crosslinker. Conidia releasing under different pH values of the medium, survival of conidia in drying capsules, storage stability, and biocontrol activity against rice sheath blight (Rhizoctonia solani) were studied. P2 prototype provided up to 98% survival to Th003 in fluid bed drying, faster conidia releasing at pH 5.8, storage stability greater than 6 months at 18 °C, and up to 67% of disease reduction. However, both biopolymers facilitate the antagonistic activity against R. solani, and therefore can be incorporated in novel hydrogel capsules-based biopreparations. This work incites to develop novel biopesticides-based formulations with potential to improve the delivery process in the target site and the protection of the active ingredient from the environmental factors.

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Silicon complements disease control by fungicides by enhancing the biochemical defense responses of barley against Bipolaris sorokiniana

Holz,

Dorneles,

Brunetto

et al. 2023

J Plant Pathol

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Seeds coated with Trichoderma atroviride and soil amended with silicon improve the resistance of Lolium multiflorum against Pyricularia oryzae

Cited by 10 publications

References 48 publications

Silicon, biological seed treatment and cutting reduce the intensity of leaf spot diseases affecting Lolium multiflorum

Silicon, biological seed treatment and cutting reduce the intensity of leaf spot diseases affecting Lolium multiflorum

Hydrogel capsules as new delivery system for Trichoderma koningiopsis Th003 to control Rhizoctonia solani in rice (Oryza sativa)

Silicon complements disease control by fungicides by enhancing the biochemical defense responses of barley against Bipolaris sorokiniana

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