Incidence Rates of Major Diseases on Green-Fleshed Kiwifruit cv. Hayward and Yellow-Fleshed Kiwifruit cv. Haegeum

Kim, Gyoung Hee; Koh, Young Jin

doi:10.5423/rpd.2018.24.3.175

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…This results in complete decay after 6-10 days and leads to a yield loss exceeding 21%. 4 To date, chemical fungicides have been the primary means of controlling B. dothidea. 5 Nevertheless, prolonged usage of such fungicides could lead to the build-up of fungicide residues and cause environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

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Honokiol inhibits Botryosphaeria dothidea, the causal pathogen of kiwifruit soft rot, by targeting membrane lipid biosynthesis

Zhang,

Chen,

Yin

et al. 2023

Pest Management Science

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BACKGROUNDKiwifruit soft rot is mainly caused by Botryosphaeria dothidea, representing a considerable threat to kiwifruit industry. This investigation assessed the inhibitory consequences and mechanisms of honokiol against B. dothidea, evaluating the inhibitory effects and underlying mechanism.RESULTSA strain of B.dothidea (XFCT‐2) was isolated from infected soft rot kiwifruit. The findings indicate that honokiol hindered the mycelial growth, conidial germination, and pathogenicity of B. dothidea in a dose‐dependent manner, both in vitro and in vivo. Furthermore, ultrastructural examinations showed that honokiol impaired the integrity of B. dothidea, leading to an elevation in cell membrane permeability, engendering a multitude of intracellular substance extravasations and hampering energy metabolism. Transcriptome analysis exhibited that honokiol‐regulated genes were related to membrane lipid biosynthesis, comprising ACC1, FAS2, Arp2, gk, Cesle, and Etnk1. These findings indicate that honokiol impedes B. dothidea by obstructing lipid biosynthesis within the cell membrane and compromising its integrity, halting the growth of the mycelia, which could potentially cause cellular demise.CONCLUSIONThis investigation illustrates how honokiol functions as an eco‐friendly approach to prevent the occurrence of soft rot in kiwifruits. © 2023 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

“…Soft rot causes the epidermis of the infected fruit to become concave and soft, with milky white flesh at the center of the disease. This results in complete decay after 6–10 days and leads to a yield loss exceeding 21% 4 . To date, chemical fungicides have been the primary means of controlling B. dothidea 5 .…”

Section: Introductionmentioning

confidence: 99%

Honokiol inhibits Botryosphaeria dothidea, the causal pathogen of kiwifruit soft rot, by targeting membrane lipid biosynthesis

Zhang,

Chen,

Yin

et al. 2023

Pest Management Science

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show abstract

“…In Korea, 20.5% of kiwifruit cultivar 'Hayward' (Actinidia chinensis var. deliciosa) was lost with ripe rot caused by B. dothidea in 2014 (Kim and Koh, 2018). Another cultivar of A. chinensis var.…”

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confidence: 99%

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

Shin

Ledesma

Whitman³

et al. 2021

Plant Pathol J

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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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Occurrence and Distribution of Root-Knot Nematodes in Kiwifruit Orchard

Kang¹,

Je²,

Choi³

2023

Res. Plant Dis

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The study was conducted to investigate the infestation and distribution of plant-parasitic nematodes on kiwi orchards in Korea. Plant parasitic nematodes genus and densities were investigated at a total of 102 sites in Jeollanam-do, Gyeongsangnam-do, and Jeju-do, which are the main production areas of domestic kiwi orchards. Plant parasitic nematodes detected were of 9 genera, including root-knot nematodes (Meloidogyne spp.), spiral nematodes (Helicotylenchus spp.), and needle nematodes (Paratylenchus spp.), and 56% of the 102 plantations were infected with root-knot nematodes. Root-knot nematodes were found to be the most important plant parasitic nematode in domestic kiwi orchards. The average density of root-knot nematodes is 97 per 300 cm<sup>3</sup> soil, and there is concern about the kiwi yield reduction. As a result of identifying the root-knot nematode species: M. arenaria, M. hapla, M. incognita, and M. javanica. Among them, M. arenaria is the most dominant. As the plant parasitic nematode infection route in fruit trees is often spread through the transplantation of infected seedlings, attention should be paid to the production of nematode-free plants during the production and supply of kiwifruit plants.

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Incidence Rates of Major Diseases on Green-Fleshed Kiwifruit cv. Hayward and Yellow-Fleshed Kiwifruit cv. Haegeum

Cited by 3 publications

References 12 publications

Honokiol inhibits Botryosphaeria dothidea, the causal pathogen of kiwifruit soft rot, by targeting membrane lipid biosynthesis

Honokiol inhibits Botryosphaeria dothidea, the causal pathogen of kiwifruit soft rot, by targeting membrane lipid biosynthesis

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

Occurrence and Distribution of Root-Knot Nematodes in Kiwifruit Orchard

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