Resistência do algodoeiro à ferrugem tropical potencializada pelo silício

Guerra, Antonia Mirian Nogueira de Moura; Rodrigues, Fabrício Ávila; Berger, Paulo Geraldo; Barros, Alexandre Guimarães de Almeida; Rodrigues, Yasmim Cristina; Lima, Tricia Costa

doi:10.1590/brag.2013.037

Cited by 7 publications

(3 citation statements)

References 31 publications

(29 reference statements)

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“…PEREIRA et al (2009) found out that the application of potassium silicate to the leaves of coffee plants infected with Hemileia vastatrix led to an increase in the activities of quitinase (QUI) and glucanase (GLU) in intermediate stages of the infectious process. According to GUERRA et al (2013), the activities of these two enzymes may be related to the defense mechanisms of plants suppressed with Si, impeding the pathogen from entering, growing and colonizing the cells of the leaf tissue. In a previous study, Si enhanced the resistance to the coffee plant pathogen Cercospora coffeicola, with increase in cuticle thickness (POZZA et al, 2004).…”

Section: Resultsmentioning

confidence: 99%

Induction of resistance to Colletotrichum truncatum in lima bean

Gomes

Nascimento

2018

Arq. Inst. Biol.

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Anthracnose (Colletotrichum truncatum) is one of the major diseases of the lima bean culture, found in production fields, causing decrease in productivity. The objective of this study was to evaluate the effect of abiotic and biotic inducers applied in lima bean plants to reduce anthracnose severity. Lima bean accessions were used and treated with: the abiotic inducers calcium silicate (Agrosilício Plus) and silicate clay (Rocksil), using the 3 g dose.L-1; the biotic inducer citric biomass extract (Ecolife), at the dose of 3 mL.L-1; and distilled water as control. To evaluate the resistance induction, the results of severity and degree of resistance of fava bean at 7, 11, 15, 19 and 23 days after inoculation were considered according to the scale of grades and classes of reactions. The design was a randomized block in a factorial arrangement 4 × 15 (treatments × hits) with four blocks. Resistance inducers Agrosilicon Plus, Ecolife and Rocksil have potential to be used in the management of anthracnose in fava bean. The studied accesses showed degree of resistance, being able to be explored in relation to obtaining anthracnose resistant cultivars in future breeding programs of this crop.

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Section: Resultsmentioning

confidence: 99%

Induction of resistance to Colletotrichum truncatum in lima bean

Gomes

Nascimento

2018

Arq. Inst. Biol.

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“…O silício (Si) é um micronutriente com efeito pronunciado em plantas expostas a condições de estresse, bem como ao ataque de patógenos, podendo reduzir a severidade de doenças em algumas culturas (PEREIRA et al, 2009;CARRÉ-MISSIO et al, 2010;CRUZ et al, 2013;SANTOS et al, 2014). O aumento da lignificação da parede celular (CRUZ et al, 2012), a ativação de enzimas de defesa (quitinases, β-1,3-glucanases, peroxidases, polifenoloxidases, lipoxigenases e fenilalanina amônia-liases) (GUERRA et al, 2013) e a ação tóxica contra determinadas espécies de fungos (GOMES et al, 2011), são alguns dos efeitos promovidos pelo Si em plantas, que dificulta a infecção de fitopatógenos.…”

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Silício e microrganismos antagonistas no controle de Fusarium sp. na soja

Rodrigues¹,

Fidélis²,

Tavares³

2017

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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ResumoA cultura da soja é afetada negativamente por diversas doenças de importância econômica, principalmente aquelas causadas por fungos. O objetivo do trabalho foi avaliar o efeito do manejo com silício, isoladamente ou associado com Bacillus subtilis e Trichoderma sp., no controle de Fusarium sp. em plantas de soja. O delineamento experimental utilizado foi de blocos casualizados, com quatro repetições, em sacos plásticos à campo. Sementes de soja cultivar M9144RR foram tratadas com Bacillus subtilis e Trichoderma sp.. As aplicações foliares de silício nas doses 0; 1,0; 2,5; 4,0 e 5,5 ml L -1 foram realizadas nos estádios V6 e R1. Foram avaliados: severidade da doença, área abaixo da curva de progresso da doença, altura de plantas, número de vagens por planta, número de grãos por planta e massa total de grãos por planta. As aplicações foliares de silício (isoladamente) promoveram maior granação, com incrementos superiores a 12 grãos por planta. O manejo com silício, B. subtilis, Trichoderma sp. controla a severidade de Fusarium sp. em plantas de soja. O uso de silício, nas doses mais elevadas, associado à B. subtilis tem efeito promotor de crescimento em plantas de soja.Palavras chave: Bacillus subtilis; Trichoderma sp., micronutriente. Abstract Silicon and antagonistic microorganisms in the control of Fusarium sp. on soybeanSoybean cultivation is negatively affected by several diseases of economic importance, especially those caused by fungi. The objective of this work was to evaluate the effect of silicon handling, either alone or in association with Bacillus subtilis and Trichoderma sp., on the control of Fusarium sp. in soybean plants. The experimental design was a randomized block design, with four replications, in plastic field bags. The foliar applications of silicon at doses 0.0; 1.0; 2.5; 4.0 and 5.5 ml L -1 were performed at the V6 and R1 stages. Disease severity, area under disease progress curve, plant height, number of pods per plant, number of grains per plant and total grains per plant were evaluated. Foliar applications of silicon (alone) promoted greater granulation, with increments greater than 12 grains per plant. Management with silicon, B. subtilis, Trichoderma sp. controls the severity of Fusarium sp. in soybean plants. Silicon at the highest doses associated with B. subtilis has a growth promoting effect on soybean plants.

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“…O silício é considerado um potencializador de resistência em plantas, devido à barreira mecânica que se forma nos tecidos pelo acúmulo deste mineral, além do incremento de compostos secundários que podem afetar o desenvolvimento de insetos e patógenos (ALCANTRA et al, 2010;GUERRA et al, 2013).…”

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Entomopatógenos e óleo de nim associados a silício no manejo de tripes e míldio e rendimento de cebola

Gonçalves¹,

Araújo²

2019

RAC

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Resistência do algodoeiro à ferrugem tropical potencializada pelo silício

Cited by 7 publications

References 31 publications

Induction of resistance to Colletotrichum truncatum in lima bean

Induction of resistance to Colletotrichum truncatum in lima bean

Silício e microrganismos antagonistas no controle de Fusarium sp. na soja

Entomopatógenos e óleo de nim associados a silício no manejo de tripes e míldio e rendimento de cebola

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