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Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize

The Curvularia Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of Cymbopogon citratus upon the phytopathogen Curvularia lunata, causative...

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Autores principales: Mourão, Dalmarcia de Sousa Carlos, Ferreira de Souza Pereira, Talita, de Souza, Danival José, Chagas Júnior, Aloísio Freitas, Dalcin, Mateus Sunti, Veloso, Ronice Alves, Leão, Evelynne Urzêdo, dos Santos, Gil Rodrigues
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5622397/
https://www.ncbi.nlm.nih.gov/pubmed/28930276
http://dx.doi.org/10.3390/medicines4030062
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author Mourão, Dalmarcia de Sousa Carlos
Ferreira de Souza Pereira, Talita
de Souza, Danival José
Chagas Júnior, Aloísio Freitas
Dalcin, Mateus Sunti
Veloso, Ronice Alves
Leão, Evelynne Urzêdo
dos Santos, Gil Rodrigues
author_facet Mourão, Dalmarcia de Sousa Carlos
Ferreira de Souza Pereira, Talita
de Souza, Danival José
Chagas Júnior, Aloísio Freitas
Dalcin, Mateus Sunti
Veloso, Ronice Alves
Leão, Evelynne Urzêdo
dos Santos, Gil Rodrigues
author_sort Mourão, Dalmarcia de Sousa Carlos
collection PubMed
description The Curvularia Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of Cymbopogon citratus upon the phytopathogen Curvularia lunata, causative agent of the Curvularia Leaf Spot. There was realized pathogenicity tests of C. lunata in maize plants, phytotoxicity of the essential oil of C. citratus and gas chromatography attached, germination tests of the conidia, and of in vitro inhibition of C. lunata. Also, there were realized tests aiming at verifying the phytopathogen control in vivo. In the pathogenicity tests, there were verified symptoms of the disease in all of the suspensions tested on plants. It was observed that the essential oil concentrations of 7.5 µL mL(−1) to 50 µL mL(−1) were phytotoxic. The majoritarian chemical components of the essential oil of C. citratus were Geranial (41.46%) and Neral (32.43%). The concentrations of 5 and 7.5 µL mL(−1) inhibited 100% of conidia germination. None of the concentrations evaluated effectively inhibited C. lunata mycelial growth in in vitro tests. In the preventive control, the concentration of 7.5 µL mL(−1) was sufficient for the reduction of the progress of the disease, however the curative control was not efficient on the tested dosages.
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spelling pubmed-56223972017-10-05 Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize Mourão, Dalmarcia de Sousa Carlos Ferreira de Souza Pereira, Talita de Souza, Danival José Chagas Júnior, Aloísio Freitas Dalcin, Mateus Sunti Veloso, Ronice Alves Leão, Evelynne Urzêdo dos Santos, Gil Rodrigues Medicines (Basel) Article The Curvularia Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of Cymbopogon citratus upon the phytopathogen Curvularia lunata, causative agent of the Curvularia Leaf Spot. There was realized pathogenicity tests of C. lunata in maize plants, phytotoxicity of the essential oil of C. citratus and gas chromatography attached, germination tests of the conidia, and of in vitro inhibition of C. lunata. Also, there were realized tests aiming at verifying the phytopathogen control in vivo. In the pathogenicity tests, there were verified symptoms of the disease in all of the suspensions tested on plants. It was observed that the essential oil concentrations of 7.5 µL mL(−1) to 50 µL mL(−1) were phytotoxic. The majoritarian chemical components of the essential oil of C. citratus were Geranial (41.46%) and Neral (32.43%). The concentrations of 5 and 7.5 µL mL(−1) inhibited 100% of conidia germination. None of the concentrations evaluated effectively inhibited C. lunata mycelial growth in in vitro tests. In the preventive control, the concentration of 7.5 µL mL(−1) was sufficient for the reduction of the progress of the disease, however the curative control was not efficient on the tested dosages. MDPI 2017-08-20 /pmc/articles/PMC5622397/ /pubmed/28930276 http://dx.doi.org/10.3390/medicines4030062 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mourão, Dalmarcia de Sousa Carlos
Ferreira de Souza Pereira, Talita
de Souza, Danival José
Chagas Júnior, Aloísio Freitas
Dalcin, Mateus Sunti
Veloso, Ronice Alves
Leão, Evelynne Urzêdo
dos Santos, Gil Rodrigues
Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title_full Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title_fullStr Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title_full_unstemmed Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title_short Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize
title_sort essential oil of cymbopogon citratus on the control of the curvularia leaf spot disease on maize
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5622397/
https://www.ncbi.nlm.nih.gov/pubmed/28930276
http://dx.doi.org/10.3390/medicines4030062
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