First Report of <i>Dickeya fangzhongdai</i> Causing Soft Rot of <i>Phalaenopsis aphrodite</i> in China

Shen, Yanqiong; Lv, Wenxuan; Du, Yunpeng; Zhang, Y. X.; Li, H. P.

doi:10.1094/pdis-01-19-0234-pdn

Cited by 7 publications

(4 citation statements)

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“…Repeated reports of D. fangzhongdai outbreaks in Asia indicate that the pathogen is posing a threat to cultivation of various crops, ornamental plants and trees ( Tian et al, 2016 ; Zhang et al, 2018 ; Jaffar et al, 2019 ; Shen et al, 2019 ; Tsai et al, 2019 ; Balamurugan et al, 2020 ; Choi et al, 2021 ; Huang et al, 2021 ; Wang et al, 2021 ). There have been no reports of D. fangzhongdai outbreaks or infections of plants in the open environment in Europe, however due to lack of specific testing for D. fangzhongdai species, isolates can be overlooked or assigned to Dickeya spp.…”

Section: Discussionmentioning

confidence: 99%

“…However, based on the outbreak reports, it has a more significant impact on agriculture in Asia. While data on losses is limited, several authors report outbreaks on various economically important plants such as orchids ( Shen et al, 2019 ; Balamurugan et al, 2020 ; Wei et al, 2021 ; Chi et al, 2022 ), banana ( Yang et al, 2022 ), onion ( Tsai et al, 2019 ; Wei et al, 2021 ), jack fruit ( Jaffar et al, 2019 ), Asian pear ( Tian et al, 2016 ; Choi et al, 2021 ), and even staple food crops such as taro ( Dobhal et al, 2020 ; Huang et al, 2021 ; Hugouvieux-Cotte-Pattat et al, 2022 ). Based on the reports, it can be surmised that D. fangzhongdai is well established in Asia.…”

Section: Introductionmentioning

confidence: 99%

“…Multiple D. fangzhongdai outbreaks ( Tian et al, 2016 ; Jaffar et al, 2019 ; Shen et al, 2019 ; Tsai et al, 2019 ; Balamurugan et al, 2020 ; Ma et al, 2020 ; Choi et al, 2021 ; Zhou et al, 2021 ; Chi et al, 2022 ; Yang et al, 2022 ) in recent years suggest that the pathogen is present and spreading in Asia and also other continents. It was indicated before that trade plays can promote the spread of the Dickeya disease ( Toth et al, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

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Retrospective survey of Dickeya fangzhongdai using a novel validated real-time PCR assay

Alič,

Bačnik,

Dreo

2024

Front. Microbiol.

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Dickeya fangzhongdai, an aggressive plant pathogen, causes symptoms on a variety of crops and ornamental plants including bleeding canker of Asian pear trees. Historical findings stress the need for a specific detection tool for D. fangzhongdai to prevent overlooking the pathogen or assigning it to general Dickeya spp. Therefore, a qualitative real-time PCR for specific detection of D. fangzhongdai has been developed and validated. The developed assay shows selectivity of 100%, diagnostic sensitivity of 76% and limit of detection with 95% confidence interval in plant matrices ranging from 311 to 2,275 cells/mL of plant extracts. The assay was successfully used in a retrospective survey of selected host plants of relevance to Europe and environmental niches relevant to D. fangzhongdai. Samples of potato tubers and plants, plants from the Malinae subtribe (apple, pear, quince, and Asian pear tree) and fresh surface water from Slovenia were analyzed. D. fangzhongdai was not detected in any plant samples, however, 12% of surface water samples were found to be positive.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Retrospective survey of Dickeya fangzhongdai using a novel validated real-time PCR assay

Alič,

Bačnik,

Dreo

2024

Front. Microbiol.

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“…For instance, D. oryzae (formerly belonged to D. zeae ) has been the primary pathogen causing soft rot disease on crops in south China since the 1980s ( Hong et al, 1983 ; Yang, 2000 ; Lin and Feng, 2006 ). In recent years, however, D. zeae and D. fangzhongdai are more frequently isolated from crops, fruit trees, vegetables, ornamentals, and even herbaceous plants ( Lin et al, 2010 ; Zhang et al, 2014 ; Hu et al, 2018 ; Shen et al, 2019 ; Chen et al, 2020 ; Boluk et al, 2021 ; Huang et al, 2021 ; Wang et al, 2021 ). Therefore, the success of control efforts against SRP diseases depends on a good understanding of the pathogens and their pathogenicity-related characteristics.…”

Section: Discussionmentioning

confidence: 99%

Isolation and Genome Analysis of Pectobacterium colocasium sp. nov. and Pectobacterium aroidearum, Two New Pathogens of Taro

Zhou

et al. 2022

Front. Plant Sci.

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Bacterial soft rot is one of the most destructive diseases of taro (Colocasia esculenta) worldwide. In recent years, frequent outbreaks of soft rot disease have seriously affected taro production and became a major constraint to the development of taro planting in China. However, little is known about the causal agents of this disease, and the only reported pathogens are two Dickeya species and P. carotovorum. In this study, we report taro soft rot caused by two novel Pectobacterium strains, LJ1 and LJ2, isolated from taro corms in Ruyuan County, Shaoguan City, Guangdong Province, China. We showed that LJ1 and LJ2 fulfill Koch’s postulates for taro soft rot. The two pathogens can infect taro both individually and simultaneously, and neither synergistic nor antagonistic interaction was observed between the two pathogens. Genome sequencing of the two strains indicated that LJ1 represents a novel species of the genus Pectobacterium, for which the name “Pectobacterium colocasium sp. nov.” is proposed, while LJ2 belongs to Pectobacterium aroidearum. Pan-genome analysis revealed multiple pathogenicity-related differences between LJ1, LJ2, and other Pectobacterium species, including unique virulence factors, variation in the copy number and organization of Type III, IV, and VI secretion systems, and differential production of plant cell wall degrading enzymes. This study identifies two new soft rot Pectobacteriaceae (SRP) pathogens causing taro soft rot in China, reports a new case of co-infection of plant pathogens, and provides valuable resources for further investigation of the pathogenic mechanisms of SRP.

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Characterization of Dickeya fangzhongdai causing bacterial soft rot disease on Dendrobium nobile in India

et al. 2020

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First Report of Dickeya fangzhongdai Causing Soft Rot of Phalaenopsis aphrodite in China

Cited by 7 publications

References 0 publications

Retrospective survey of Dickeya fangzhongdai using a novel validated real-time PCR assay

Retrospective survey of Dickeya fangzhongdai using a novel validated real-time PCR assay

Isolation and Genome Analysis of Pectobacterium colocasium sp. nov. and Pectobacterium aroidearum, Two New Pathogens of Taro

Characterization of Dickeya fangzhongdai causing bacterial soft rot disease on Dendrobium nobile in India

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