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Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease

The tendency towards application of natural products and botanical extracts as safer antimicrobial agents against plant pathogens has recently been increased. Plant Tonic9 (EOX-SOV) is an environmentally friendly product and by its application there is no concern of resistance as it is with conventi...

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Main Authors: Ashtiani, Farnaz Abed, Arzanlou, Mahdi, Nasehi, Abbas, Kadir, Jugah, Vadamalai, Ganesan, Damirchi, Sodeif Azadmard
Format: Article
Language:English
Published: Elsevier 2018
Online Access:http://psasir.upm.edu.my/id/eprint/73533/1/Plant%20tonic%2C%20a%20plant-derived%20bioactive%20natural%20product%2C%20exhibits%20antifungal%20activity%20against%20rice%20blast%20disease.pdf
http://psasir.upm.edu.my/id/eprint/73533/
https://www.sciencedirect.com/science/article/abs/pii/S092666901730763X
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spelling my.upm.eprints.735332020-05-31T00:00:10Z http://psasir.upm.edu.my/id/eprint/73533/ Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease Ashtiani, Farnaz Abed Arzanlou, Mahdi Nasehi, Abbas Kadir, Jugah Vadamalai, Ganesan Damirchi, Sodeif Azadmard The tendency towards application of natural products and botanical extracts as safer antimicrobial agents against plant pathogens has recently been increased. Plant Tonic9 (EOX-SOV) is an environmentally friendly product and by its application there is no concern of resistance as it is with conventional pesticides. The goal of the present research was to determine the effect of application of this product against Magnaporthe oryzae, the causal agent of rice blast. The efficacy of plant tonic against M. oryzae was evaluated through in vitro and in vivo experiments. Under in vitro conditions, application of plant tonic at all rates (2, 3, and 4 mL/L) could significantly inhibit the mycelial growth and conidial germination of fungus with the highest inhibition (83.63% and 95.15%, respectively) recorded by the rate of 4 mL. Plant tonic treatment (3 and 4 mL) was more effective than fungicide treatment (propiconazole 25% EC (0.1%); 250 ppm) to inhibit mycelial growth and conidial germination of M. oryzae. Under in vivo conditions, plant tonic application (4 mL) was also the most effective treatment and resulted in a significant reduction (57.12%) of the area under the disease progress curve (AUDPC) value as compared with the control. Application of plant tonic also caused increased accumulation of phenolic compounds and higher activity of peroxidase and polyphenol oxidase enzymes than the control. The maximum amount of phenolic compounds (0.49 mg Gallic acid equivalent/g leaf fresh weight) and the highest activity of the enzymes (1.24 and 7.85 Units/mL for peroxidase and polyphenol oxidase, respectively) were observed in plants treated with plant tonic (4 mL) and challenged with M. oryzae as compared with other treatments. No phytotoxicity was observed in plant tonic treated rice plants when compared with the control. Results of the present study confirmed the beneficial effects of plant tonic in controlling rice blast disease. Therefore, its application may help to develop appropriate management strategies and provide with the opportunity to have cleaner and safer environment for agriculture. Elsevier 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/73533/1/Plant%20tonic%2C%20a%20plant-derived%20bioactive%20natural%20product%2C%20exhibits%20antifungal%20activity%20against%20rice%20blast%20disease.pdf Ashtiani, Farnaz Abed and Arzanlou, Mahdi and Nasehi, Abbas and Kadir, Jugah and Vadamalai, Ganesan and Damirchi, Sodeif Azadmard (2018) Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease. Industrial Crops and Products, 112. 105 - 112. ISSN 0926-6690 https://www.sciencedirect.com/science/article/abs/pii/S092666901730763X 10.1016/j.indcrop.2017.11.013
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The tendency towards application of natural products and botanical extracts as safer antimicrobial agents against plant pathogens has recently been increased. Plant Tonic9 (EOX-SOV) is an environmentally friendly product and by its application there is no concern of resistance as it is with conventional pesticides. The goal of the present research was to determine the effect of application of this product against Magnaporthe oryzae, the causal agent of rice blast. The efficacy of plant tonic against M. oryzae was evaluated through in vitro and in vivo experiments. Under in vitro conditions, application of plant tonic at all rates (2, 3, and 4 mL/L) could significantly inhibit the mycelial growth and conidial germination of fungus with the highest inhibition (83.63% and 95.15%, respectively) recorded by the rate of 4 mL. Plant tonic treatment (3 and 4 mL) was more effective than fungicide treatment (propiconazole 25% EC (0.1%); 250 ppm) to inhibit mycelial growth and conidial germination of M. oryzae. Under in vivo conditions, plant tonic application (4 mL) was also the most effective treatment and resulted in a significant reduction (57.12%) of the area under the disease progress curve (AUDPC) value as compared with the control. Application of plant tonic also caused increased accumulation of phenolic compounds and higher activity of peroxidase and polyphenol oxidase enzymes than the control. The maximum amount of phenolic compounds (0.49 mg Gallic acid equivalent/g leaf fresh weight) and the highest activity of the enzymes (1.24 and 7.85 Units/mL for peroxidase and polyphenol oxidase, respectively) were observed in plants treated with plant tonic (4 mL) and challenged with M. oryzae as compared with other treatments. No phytotoxicity was observed in plant tonic treated rice plants when compared with the control. Results of the present study confirmed the beneficial effects of plant tonic in controlling rice blast disease. Therefore, its application may help to develop appropriate management strategies and provide with the opportunity to have cleaner and safer environment for agriculture.
format Article
author Ashtiani, Farnaz Abed
Arzanlou, Mahdi
Nasehi, Abbas
Kadir, Jugah
Vadamalai, Ganesan
Damirchi, Sodeif Azadmard
spellingShingle Ashtiani, Farnaz Abed
Arzanlou, Mahdi
Nasehi, Abbas
Kadir, Jugah
Vadamalai, Ganesan
Damirchi, Sodeif Azadmard
Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
author_facet Ashtiani, Farnaz Abed
Arzanlou, Mahdi
Nasehi, Abbas
Kadir, Jugah
Vadamalai, Ganesan
Damirchi, Sodeif Azadmard
author_sort Ashtiani, Farnaz Abed
title Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
title_short Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
title_full Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
title_fullStr Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
title_full_unstemmed Plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
title_sort plant tonic, a plant-derived bioactive natural product, exhibits antifungal activity against rice blast disease
publisher Elsevier
publishDate 2018
url http://psasir.upm.edu.my/id/eprint/73533/1/Plant%20tonic%2C%20a%20plant-derived%20bioactive%20natural%20product%2C%20exhibits%20antifungal%20activity%20against%20rice%20blast%20disease.pdf
http://psasir.upm.edu.my/id/eprint/73533/
https://www.sciencedirect.com/science/article/abs/pii/S092666901730763X
_version_ 1669008819707969536
score 13.211869

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