Eficiência de Trichoderma harzianum e Gliocladium viride na redução da incidência de Botrytis cinerea em tomateiro cultivado sob ambiente protegido

Lisboa, Bruno Brito; Bochese, Carla Centeno; Vargas, Luciano Kayser; Silveira, José Ricardo Pfeifer; Radin, Bernadete; Oliveira, Andréia Mara Rota de

doi:10.1590/s0103-84782007000500006

Cited by 11 publications

(4 citation statements)

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“…It is usually assumed that young plants are not very susceptible to this pathogen and that older plants are more commonly infected (10), although plants aged between 28 and 120 days have been successfully inoculated (21,25). However, several authors have inoculated plants at approximately 60 days after sowing (1, 22), and upon natural inoculation, the first symptoms appeared at day 64 (18). Thus, given these findings and those of the present study, it is recommended to inoculate tomato plants that are at least 65 days old, preferably close to flowering.…”

Section: Resultsmentioning

confidence: 99%

Key factors to inoculate Botrytis cinerea in tomato plants

2014

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Studies addressing the biological control of Botrytis cinerea have been unsuccessful because of fails in inoculating tomato plants with the pathogen. With the aim of establishing a methodology for inoculation into stems, experiments were designed to assess: i. the aggressiveness of pathogen isolates; ii. the age at which tomato plants should be inoculated; iii. the susceptibility of tissues at different stem heights; iv. the need for a moist chamber after inoculation; and v. the effectiveness of gelatin regarding inoculum adhesion. Infection with an isolate from tomato plants that was previously inoculated into petioles and then re-isolated was successful. An isolate from strawberry plants was also aggressive, although less than that from tomato plants. Tomato plants close to flowering, at 65 days after sowing, and younger, middle and apical stem portions were more susceptible. There was positive correlation between lesion length and sporulation and between lesion length and broken stems. Lesion length and the percentage of sporulation sites were reduced by using a moist chamber and were not affected by adding gelatin to the inoculum suspension. This methodology has been adopted in studies of B. cinerea in tomato plants showing reproducible results. The obtained results may assist researchers who study the gray mold.

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Section: Resultsmentioning

confidence: 99%

Key factors to inoculate Botrytis cinerea in tomato plants

2014

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“…(Etebarian et al, 2000;Ezziyyani et al, 2007), and shoot pathogens such as Venturia spp., Botrytis spp. (Hjeljord et al, 2001;Lisboa et al, 2007), Crinipellis perniciosa, causal agent of the cocoa witch's broom (Sanogo et al, 2002). Thus, species of the genus Trichoderma are relevant for their favorable characteristics to survival in the environment, such as saprophytic nature and rapid colonization of substrates with minimal nutritional requirements, and resistance structures to survive environmental adversities.…”

Section: Use Of Trichoderma In Agriculturementioning

confidence: 99%

Trichoderma: biological control efficiency and perspectives for the Brazilian Midwest states and Tocantins

et al. 2022

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Brazil is one of the world leaders in the agribusiness sector tending to directly influence a growing dependence on imported inputs, specifically synthetic agrochemicals. At the state level, in 2013, Tocantins stood out in first place in the ranking of agrochemical consumers, however, these products can cause several problems, such as poisoning to humans, environmental contamination, and increased resistance to phytopathogens. Biological control is an alternative to the use of agrochemicals towards eliminating pests naturally by using living organisms called Biological Control Agents (BCA). Currently, fungi of the Trichoderma genus are some of the most used organisms in biological pest control for their relevant characteristics that favor them in terms of survival in the environment, such as high capacity to adapt to ecological conditions, potential to colonize the rhizosphere of plants, mycoparasitism, production of volatile and non-volatile metabolites. In addition, it works on plant growth and productivity. In general, the use of Trichoderma favors the control of soil pathogens, such as Rhizoctonia, Pythium, Sclerotinia, and nematodes. Thus, this review aims to demonstrate the importance of using Trichoderma in biological control, as well as to present an overview and perspectives of research developed by respondents in the Brazilian Midwest region and Tocantins state.

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“…Além do Fusarium subglutinans, existem diversas espécies de fungos fitopatógenos. Podemos destacar o Botrytis cinerea 18, Sclerotinia sclerotiorum 19 , Rhizoctonia solani e Fusarium solani 20 . Para o combate a esses fitopatógenos, uma alternativa que visa à substituição da utilização de pesticidas é o uso de mecanismos de biocontrole.…”

Section: Utilização De Glicoproteínas Fúngicasunclassified