Emergence of multiple Diaporthe species causing kiwifruit rot and occurrence of resistance to a methyl benzimidazole carbamate fungicide in South Korea

Gi, Seungeun; Kim, Wonyong; Yang, Kwang-Yeol

doi:10.1016/j.cropro.2022.106016

Cited by 6 publications

(3 citation statements)

References 45 publications

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“…Microscope analysis showed that the B4 colonies were white and fluffy with short mycelia, and further evaluations revealed that they had α-conidia and β-conidia (Figure 2). The morphological analysis showed that the conidia of strain B4 were similar to those previously reported for Diaporthe [43]. The fruit pathogenicity of B4 was further tested, and the results demonstrated that the fruits inoculated with the B4 strain all showed symptoms of disease consistent with those of brown rot under natural conditions in passion fruit (Figure 3).…”

Section: Discussionsupporting

confidence: 73%

Insights into the Isolation, Identification, and Biological Characterization Analysis of and Novel Control Strategies for Diaporthe passiflorae in Postharvest Passion Fruit

Wang,

Chen,

Lin

et al. 2023

JoF

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Postharvest diseases seriously restrict developments in the passion fruit industry. In this study, we aimed to identify the postharvest pathogen affecting passion fruit, investigate its pathogenicity, and explore relevant control methods. The pathogen was isolated from rotting passion fruit and identified using morphological characteristics, ITS sequences, and phylogenetic tree analyses. Additionally, preliminary studies were conducted to assess the biological characteristics of the pathogen and evaluate the efficacy of various treatments for disease control. The fungus on the passion fruit called B4 was identified as Diaporthe passiflorae. Optimal conditions for mycelial growth were observed at 25–30 °C and pH 5–6, with starch as the carbon source and peptone as the nitrogen source. Infection by D. passiflorae accelerated fruit decay, reduced the h° value of the peel, and increased the peel cell membrane permeability when compared to the control. Notably, treatments with appropriate concentrations of ɛ-poly-l-lysine, salicylic acid, and melatonin showed inhibitory effects on the pathogen’s growth in vitro and may thus be potential postharvest treatments for controlling brown rot caused by D. passiflorae in passion fruit. The results provide a scientific basis for the development of strategies to control postharvest decay and extend the storage period of passion fruit.

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Section: Discussionsupporting

confidence: 73%

Insights into the Isolation, Identification, and Biological Characterization Analysis of and Novel Control Strategies for Diaporthe passiflorae in Postharvest Passion Fruit

Wang,

Chen,

Lin

et al. 2023

JoF

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“…Colletotrichum scovillei strain KC05, isolated from an infected pepper fruit in Gangwon province, South Korea, was generously provided by Dr. Kyoung Su Kim (Kangwon National University, Chuncheon, South Korea) (Fu et al, 2021). while the Diaporthe eres strain D-5, isolated from an infected kiwifruit in Boseong county of South Korea, was provided by Dr. Kwang-Yeol Yang (Chonnam National University, Gwangju, South Korea) (Gi et al, 2022). Among these taxonomically diverse phytopathogenic fungi and oomycetes, C. gloeosporioides, C. scovillei, Phytophthora capsici, and Pythium ultimum are known to be pathogenic to pepper, causing serious problems in South Korea and many other pepper-growing countries.…”

Section: Sources Of Phytopathogenic Fungimentioning

confidence: 99%

Cercosporamide, a polyketide-derived fungal metabolite, serves as an antifungal agent against phytopathogenic fungi

Liu,

Paguirigan,

Hur

et al. 2024

Mycoscience

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An endophytic fungus, Phoma sp. NG-25, produces a set of structurally related polyketides including cercosporamide, phomodione, and usnic acid, among which, cercosporamide has been reported to have strong antifungal and anticancer activities. In this study, Phoma sp. NG-25 was grown in seven growth media to determine the optimal culture condition conducive for cercosporamide production. Cercosporamide production peaked on the eighteenth day of incubation in beef peptone dextrose (BPD) broth media. The cercosporamide titer reached to an average of 77.5 µg/mL in BPD. Paper disk diffusion assay revealed that culture filtrate containing cercosporamide as a major constituent inhibited the growth of taxonomically diverse plant pathogens, including ascomycetous, basidiomycetous, and oomycete fungi. Cercosporamide exhibited strong antifungal activities against two pepper anthracnose pathogens, Colletotrichum gloeosporioides and C. scovillei with EC 50 values of 3.8 and 7.0 µg/mL, respectively. This study suggests the potential application of cercosporamide as an effective antifungal agent in controlling anthracnose in pepper.

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“…Diaporthe eres has been reported in association with postharvest fruit rot in hardy kiwifruit in China, causing severe disease and thus significant economic losses in Northeast China ( Liu et al, 2021 ). In recent years, D. eres is reported to cause the rotting of kiwifruit ( A. deliciosa ) in South Korea ( Gi et al, 2022 ).…”

mentioning

confidence: 99%

Rapid and Sensitive Detection of the Causal Agents of Postharvest Kiwifruit Rot, Botryosphaeria dothidea and Diaporthe eres, Using a Recombinase Polymerase Amplification Assay

Park,

Kim,

Yang

2023

Plant Pathol J

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The occurrence of postharvest kiwifruit rot has caused great economic losses in major kiwifruit-producing countries. Several pathogens are involved in kiwifruit rot, notably Botryosphaeria dothidea, and Diaporthe species. In this study, a recombinase polymerase amplification (RPA) assay was developed for the rapid and sensitive detection of the pathogens responsible for posing significant threats to the kiwifruit industries. The RPA primer pairs tested in this study were highly specific for detection of B. dothidea and D. eres. The detection limits of our RPA assays were approximately two picograms of fungal genomic DNA. The optimal conditions for the RPA assays were determined to be at a temperature of 39°C maintained for a minimum duration of 5 min. We were able to detect the pathogens from kiwifruit samples inoculated with a very small number of conidia. The RPA assays enabled specific, sensitive, and rapid detection of B. dothidea and D. eres, the primary pathogens responsible for kiwifruit rots in South Korea.

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Emergence of multiple Diaporthe species causing kiwifruit rot and occurrence of resistance to a methyl benzimidazole carbamate fungicide in South Korea

Cited by 6 publications

References 45 publications

Insights into the Isolation, Identification, and Biological Characterization Analysis of and Novel Control Strategies for Diaporthe passiflorae in Postharvest Passion Fruit

Insights into the Isolation, Identification, and Biological Characterization Analysis of and Novel Control Strategies for Diaporthe passiflorae in Postharvest Passion Fruit

Cercosporamide, a polyketide-derived fungal metabolite, serves as an antifungal agent against phytopathogenic fungi

Rapid and Sensitive Detection of the Causal Agents of Postharvest Kiwifruit Rot, Botryosphaeria dothidea and Diaporthe eres, Using a Recombinase Polymerase Amplification Assay

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