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Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals

Ripe rot caused by Botryosphaeria dothidea is one of the serious diseases of postharvest kiwifruit. In order to control ripe rot on Actinidia chinensis cultivar ‘Zesy002’, several commercial agrofungicides were selected by an antifungal test on an artificial medium. Furthermore, disease suppression...

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Autores principales: Shin, Yong Ho, Ledesma, Magda, Whitman, Sonia, Tyson, Joy, Zange, Birgit, Kim, Ki Deok, Jeun, Yong Chull
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Plant Pathology 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8357569/
https://www.ncbi.nlm.nih.gov/pubmed/34365746
http://dx.doi.org/10.5423/PPJ.OA.03.2021.0046
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author Shin, Yong Ho
Ledesma, Magda
Whitman, Sonia
Tyson, Joy
Zange, Birgit
Kim, Ki Deok
Jeun, Yong Chull
author_facet Shin, Yong Ho
Ledesma, Magda
Whitman, Sonia
Tyson, Joy
Zange, Birgit
Kim, Ki Deok
Jeun, Yong Chull
author_sort Shin, Yong Ho
collection PubMed
description Ripe rot caused by Botryosphaeria dothidea is one of the serious diseases of postharvest kiwifruit. In order to control ripe rot on Actinidia chinensis cultivar ‘Zesy002’, several commercial agrofungicides were selected by an antifungal test on an artificial medium. Furthermore, disease suppression by the selected fungicides was evaluated on the kiwifruit by inoculation with a conidial suspension of B. dothidea. On the artificial media containing boscalid + fludioxonil was shown to be the most effective antifungal activity. However, in the bio-test pyraclostrobin + boscalid and iminoctadine-tris were the most effective agrochemicals on the fruit. On the other hand, the infection structures of B. dothidea on kiwifruit treated with pyraclostrobin + boscalid were observed with a fluorescent microscope. Most of the fungal conidia had not germinated on the kiwifruit treated with the agrochemicals whereas on the untreated fruit the fungal conidia had mostly germinated. Electron microscopy of the fine structures showed morphological changes to the conidia and branch of hyphae on the kiwifruit pre-treated with pyraclostrobin + boscalid, indicating its suppression effect on fungal growth. Based on this observation, it is suggested that ripe rot by B. dothidea may be suppressed through the inhibition of conidial germination on the kiwifruit treated with the agrochemicals.
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spelling pubmed-83575692021-08-13 Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals Shin, Yong Ho Ledesma, Magda Whitman, Sonia Tyson, Joy Zange, Birgit Kim, Ki Deok Jeun, Yong Chull Plant Pathol J Research Article Ripe rot caused by Botryosphaeria dothidea is one of the serious diseases of postharvest kiwifruit. In order to control ripe rot on Actinidia chinensis cultivar ‘Zesy002’, several commercial agrofungicides were selected by an antifungal test on an artificial medium. Furthermore, disease suppression by the selected fungicides was evaluated on the kiwifruit by inoculation with a conidial suspension of B. dothidea. On the artificial media containing boscalid + fludioxonil was shown to be the most effective antifungal activity. However, in the bio-test pyraclostrobin + boscalid and iminoctadine-tris were the most effective agrochemicals on the fruit. On the other hand, the infection structures of B. dothidea on kiwifruit treated with pyraclostrobin + boscalid were observed with a fluorescent microscope. Most of the fungal conidia had not germinated on the kiwifruit treated with the agrochemicals whereas on the untreated fruit the fungal conidia had mostly germinated. Electron microscopy of the fine structures showed morphological changes to the conidia and branch of hyphae on the kiwifruit pre-treated with pyraclostrobin + boscalid, indicating its suppression effect on fungal growth. Based on this observation, it is suggested that ripe rot by B. dothidea may be suppressed through the inhibition of conidial germination on the kiwifruit treated with the agrochemicals. Korean Society of Plant Pathology 2021-08 2021-08-01 /pmc/articles/PMC8357569/ /pubmed/34365746 http://dx.doi.org/10.5423/PPJ.OA.03.2021.0046 Text en © The Korean Society of Plant Pathology https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0 (https://creativecommons.org/licenses/by-nc/4.0/) ) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Shin, Yong Ho
Ledesma, Magda
Whitman, Sonia
Tyson, Joy
Zange, Birgit
Kim, Ki Deok
Jeun, Yong Chull
Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title_full Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title_fullStr Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title_full_unstemmed Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title_short Suppression of Ripe Rot on ‘Zesy002’ Kiwifruit with Commercial Agrochemicals
title_sort suppression of ripe rot on ‘zesy002’ kiwifruit with commercial agrochemicals
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8357569/
https://www.ncbi.nlm.nih.gov/pubmed/34365746
http://dx.doi.org/10.5423/PPJ.OA.03.2021.0046
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