Effects of silicon on biochemical and physiological aspects in Theobroma cacao under inoculation with Moniliophthora perniciosa

This study aimed to verify the efficiency of silicon leaf application in the physiological and biochemical characteristics in a Theobroma cacao genotype inoculated with Moniliophthora perniciosa fungus, which causes the witches’ broom disease, important cocoa disease in Brazil and worldwide. Seedlin...

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Veröffentlicht in:Revista de ciências agrárias 2019-01, Vol.41 (3), p.841-848
Hauptverfasser: Fantinato, Dayana E., Zanetti, Leonardo V., Aguilar, Marco Antonio G., Souza, Carlos Alberto S., Cuzzuol, Geraldo Rogério F., Gama, Vinícius N., Milanez, Camilla R.D.
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container_title Revista de ciências agrárias
container_volume 41
creator Fantinato, Dayana E.
Zanetti, Leonardo V.
Aguilar, Marco Antonio G.
Souza, Carlos Alberto S.
Cuzzuol, Geraldo Rogério F.
Gama, Vinícius N.
Milanez, Camilla R.D.
description This study aimed to verify the efficiency of silicon leaf application in the physiological and biochemical characteristics in a Theobroma cacao genotype inoculated with Moniliophthora perniciosa fungus, which causes the witches’ broom disease, important cocoa disease in Brazil and worldwide. Seedlings of Catongo genotype were used.  The experimental design used was a randomized block design with four replicates, including two inoculation factors (inoculated and non-inoculated plants), each one with two levels of silicon application (0.0 mg and 1.0 mg mL-1 with AgriSil containing 98% of SiO2). We observed that plants that were inoculated with M. perniciosa and subjected to leaf application with silicon presented enhanced photosynthesis, peroxidases, chitinase, polyphenoloxidases activities and stomatal density. Results have shown that silicon application is beneficial and increases the defenses against Moniliophthora perniciosa in cocoa seedlings. Objetivou-se avaliar a eficácia da aplicação foliar de silício nos aspectos fisiológicos e bioquímicos em um genótipo de Theobroma cacao inoculado com Moniliophthora perniciosa, fungo causador da vassoura-de-bruxa, importante doença da cacauicultura. Mudas do genótipo Catongo foram submetidas a um experimento com dois fatores (inoculação e não inoculação das plantas com M. perniciosa) cada um com dois níveis de Si (0.0 mg e 1.0 mg mL-1de AgriSil contendo 98% de SiO2 aplicado por pulverização). Verificou-se que plantas inoculadas e submetidas à aplicação foliar com Si apresentaram aumento na fotossíntese, das atividades de peroxidases, quitinases e polifenoloxidases e da densidade estomática. Os resultados indicam que a aplicação de silício é benéfica aumentando as defesas contra Moniliphthora perniciosa em mudas de cacaueiros.
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Seedlings of Catongo genotype were used.  The experimental design used was a randomized block design with four replicates, including two inoculation factors (inoculated and non-inoculated plants), each one with two levels of silicon application (0.0 mg and 1.0 mg mL-1 with AgriSil containing 98% of SiO2). We observed that plants that were inoculated with M. perniciosa and subjected to leaf application with silicon presented enhanced photosynthesis, peroxidases, chitinase, polyphenoloxidases activities and stomatal density. Results have shown that silicon application is beneficial and increases the defenses against Moniliophthora perniciosa in cocoa seedlings. Objetivou-se avaliar a eficácia da aplicação foliar de silício nos aspectos fisiológicos e bioquímicos em um genótipo de Theobroma cacao inoculado com Moniliophthora perniciosa, fungo causador da vassoura-de-bruxa, importante doença da cacauicultura. Mudas do genótipo Catongo foram submetidas a um experimento com dois fatores (inoculação e não inoculação das plantas com M. perniciosa) cada um com dois níveis de Si (0.0 mg e 1.0 mg mL-1de AgriSil contendo 98% de SiO2 aplicado por pulverização). Verificou-se que plantas inoculadas e submetidas à aplicação foliar com Si apresentaram aumento na fotossíntese, das atividades de peroxidases, quitinases e polifenoloxidases e da densidade estomática. 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Seedlings of Catongo genotype were used.  The experimental design used was a randomized block design with four replicates, including two inoculation factors (inoculated and non-inoculated plants), each one with two levels of silicon application (0.0 mg and 1.0 mg mL-1 with AgriSil containing 98% of SiO2). We observed that plants that were inoculated with M. perniciosa and subjected to leaf application with silicon presented enhanced photosynthesis, peroxidases, chitinase, polyphenoloxidases activities and stomatal density. Results have shown that silicon application is beneficial and increases the defenses against Moniliophthora perniciosa in cocoa seedlings. Objetivou-se avaliar a eficácia da aplicação foliar de silício nos aspectos fisiológicos e bioquímicos em um genótipo de Theobroma cacao inoculado com Moniliophthora perniciosa, fungo causador da vassoura-de-bruxa, importante doença da cacauicultura. 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Seedlings of Catongo genotype were used.  The experimental design used was a randomized block design with four replicates, including two inoculation factors (inoculated and non-inoculated plants), each one with two levels of silicon application (0.0 mg and 1.0 mg mL-1 with AgriSil containing 98% of SiO2). We observed that plants that were inoculated with M. perniciosa and subjected to leaf application with silicon presented enhanced photosynthesis, peroxidases, chitinase, polyphenoloxidases activities and stomatal density. Results have shown that silicon application is beneficial and increases the defenses against Moniliophthora perniciosa in cocoa seedlings. Objetivou-se avaliar a eficácia da aplicação foliar de silício nos aspectos fisiológicos e bioquímicos em um genótipo de Theobroma cacao inoculado com Moniliophthora perniciosa, fungo causador da vassoura-de-bruxa, importante doença da cacauicultura. Mudas do genótipo Catongo foram submetidas a um experimento com dois fatores (inoculação e não inoculação das plantas com M. perniciosa) cada um com dois níveis de Si (0.0 mg e 1.0 mg mL-1de AgriSil contendo 98% de SiO2 aplicado por pulverização). Verificou-se que plantas inoculadas e submetidas à aplicação foliar com Si apresentaram aumento na fotossíntese, das atividades de peroxidases, quitinases e polifenoloxidases e da densidade estomática. Os resultados indicam que a aplicação de silício é benéfica aumentando as defesas contra Moniliphthora perniciosa em mudas de cacaueiros.</abstract><pub>Sociedade de Ciências Agrárias de Portugal</pub><oa>free_for_read</oa></addata></record>
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title Effects of silicon on biochemical and physiological aspects in Theobroma cacao under inoculation with Moniliophthora perniciosa
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