First Report of Postharvest Fruit Rot Caused by Botrytis cinerea on Blue Honeysuckle (Lonicera caerulea L.) Fruit in China

First Report of Postharvest Fruit Rot Caused by Botrytis cinerea on Blue Honeysuckle (Lonicera caerulea L.) Fruit in China

Blue honeysuckle (Lonicera caerulea L.) fruit is growing in popularity as a natural, functional 'super fruit', but its storage is challenged by pathogen infection. In June 2022, approximately 30% of 100 kg of blue honeysuckle fruits (cv. Lanjingling) obtained in Harbin, China (128.70°E, 44...

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Veröffentlicht in:Plant disease. - 1997. - (2023) vom: 21. Nov.
1. Verfasser: Yan, Haohao (VerfasserIn)
Weitere Verfasser: Mi, Yaozu, Li, Yuxuan, Zang, Hailian, Guo, Liangchuan, Huo, Junwei, Man, Zijian, Chen, Zexu, Zhang, Bing, Sang, Mingyu, Li, Chunyan, Cheng, Yi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant disease
Schlagworte:Journal Article Causal Agent Crop Type Epidemiology Fruit Fungi Pathogen detection Subject Areas disease development and spread small fruits
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520 |a Blue honeysuckle (Lonicera caerulea L.) fruit is growing in popularity as a natural, functional 'super fruit', but its storage is challenged by pathogen infection. In June 2022, approximately 30% of 100 kg of blue honeysuckle fruits (cv. Lanjingling) obtained in Harbin, China (128.70°E, 44.87°N) showed postharvest fruit rot symptoms after 15 d of storage at 4°C, leading to whole fruit rotting with gray fungal growth (Fig.1 A). Small (1-2 mm) segments of infected tissue were obtained from 20 randomly selected fruits which were surface sterilized with 75% ethanol for 30 s and 5% sodium hypochlorite (NaOCl) for 3 min, rinsed three times with sterile distilled water, dried in paper towel, and plated in 9 cm Petri dishes containing potato dextrose agar (PDA). Five purified cultures were obtained and their front colonies were dark brown (Fig.1 C) on the PDA plates after 5 d at 25°C (Alam et al. 2019; Riquelme-Toledo et al. 2020). The conidia (n = 50) were single-celled, hyaline, either ellipsoid or ovoid, and measured 7.5-15.0 μm (11.7 μm average) × 6.0-11.4 μm (8.3 μm average). The conidiophores (Fig.1 E) were branched at the apex bearing bunches of conidia resembling grape clusters (Ellis 1971). For molecular confirmation, genomic DNA was extracted from a representative isolate LDGS-3 using the Ezup Column Fungi Genomic DNA Purification kit (Sangon Biotech, Shanghai, China). The internal transcribed spacer region (ITS, GenBank ON952502), heat shock protein (HSP60, GenBank OP039103), the second-largest subunit of RNA polymerase II (RPB2, GenBank OP186114) and glyceraldehyde 3-phosphate dehydrogenase (G3PDH, GenBank OQ658508) genes were partially amplified with the respective primers ITS1/ITS4, HSP60f/HSP60r, RPB2f/RPB2r, and G3PDH-F/G3PDH-R (Staats et al. 2005; White et al. 1990). BLAST analysis revealed that the sequences of the four genes showed 100% homology with the MH782039, MH796663, MN448501 and MH796662 sequences for isolates of Botrytis cinerea. Based on morphology and molecular characteristics, the isolate LDGS-3 was identified as B. cinerea. For pathogenicity, twenty healthy blue honeysuckle fruits (cv. Lanjingling) were superficially sterilized with 75% ethanol and washed with distilled water. Ten inoculated blue honeysuckle fruits, which were injected with 10 μL conidial suspension of isolate LDGS-3 (106 spores/mL) displayed fruit rot symptoms (Fig.1 B) inside 9 cm Petri dishes after 10 d at 4°C, while no symptoms were detected on ten fruits inoculated with sterile distilled water (Alam et al. 2019). The same isolate that was reisolated from infected fruits with the same morphological and molecular traits was also identified as B. cinerea, confirming Koch's postulates. B. cinerea was previously reported in Henan Province, China in hawthorn (Zhang et al. 2018). To our knowledge, this is the first report of postharvest fruit rot caused by B. cinerea on blue honeysuckle fruit in China, which will aid future management of this emerging postharvest disease 
650 4 |a Journal Article 
650 4 |a Causal Agent 
650 4 |a Crop Type 
650 4 |a Epidemiology 
650 4 |a Fruit 
650 4 |a Fungi 
650 4 |a Pathogen detection 
650 4 |a Subject Areas 
650 4 |a disease development and spread 
650 4 |a small fruits 
700 1 |a Mi, Yaozu  |e verfasserin  |4 aut 
700 1 |a Li, Yuxuan  |e verfasserin  |4 aut 
700 1 |a Zang, Hailian  |e verfasserin  |4 aut 
700 1 |a Guo, Liangchuan  |e verfasserin  |4 aut 
700 1 |a Huo, Junwei  |e verfasserin  |4 aut 
700 1 |a Man, Zijian  |e verfasserin  |4 aut 
700 1 |a Chen, Zexu  |e verfasserin  |4 aut 
700 1 |a Zhang, Bing  |e verfasserin  |4 aut 
700 1 |a Sang, Mingyu  |e verfasserin  |4 aut 
700 1 |a Li, Chunyan  |e verfasserin  |4 aut 
700 1 |a Cheng, Yi  |e verfasserin  |4 aut 
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