First Report of <i>Dickeya dadantii</i> Causing Stem Rot of Poinsettia in Taiwan

Wei, Xian-Yong; Chiu, Yu‐Lung; Deng, Wen-Ling; Chu, Chia‐Ching

doi:10.1094/pdis-03-18-0397-pdn

Cited by 7 publications

(1 citation statement)

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“…Since most of these previous reports have classified the pathogens as E. chrysanthemi or P . chrysanthemi , and only a few recent studies have identified the pathogens using the current classification system (Tsai et al., 2019; Wei et al., 2019), the genetic diversity and phenotypic variation of Dickeya strains in Taiwan remain elusive. To fill this knowledge gap, this study gathered bacterial strains from preserved laboratory cultures of E .…”

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confidence: 99%

Phylogenetic and phenotypic analyses on Dickeya spp. isolated from different host plants in Taiwan

Wei

Deng

Chu

2021

Journal of Phytopathology

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Dickeya spp. cause severe diseases in many crops. Most previous studies in Taiwan identified these pathogens as a single species (Erwinia chrysanthemi), and little is known about their genetic and phenotypic diversity. This study collected 40 Dickeya strains isolated from different host plants in Taiwan and conducted a series of phylogenetic and phenotypic analyses. Reconstruction of maximum likelihood trees revealed that the isolated strains belonged to D. dadantii, D. chrysanthemi, D. undicola, and D. fangzhongdai. Among the 40 tested strains, 32 collected from Phalaenopsis orchids and Welsh onions were classified as D. fangzhongdai, while those isolated from the other hosts were assigned to D. dadantii, D. chrysanthemi, and D. undicola, suggesting that some of these bacteria exhibit host preferences. Inoculation of representative strains of the four Dickeya species onto potato, Phalaenopsis and African violet showed that the maceration potentials varied inter‐ and intra‐specifically and that the differential infection patterns were host‐dependent. Phenotypic assays also revealed that strain‐level variation in maceration potential was associated (in part) with the pathogens' tolerance to hostile pH and temperature or regulation of indigoidine production. Although comparisons of colony morphology and pigment production were not sufficient to differentiate Dickeya species, Biolog analyses identified several nutrients and chemicals potentially capable of differentiating among different species. Overall, our data revealed the genetic diversity and phenotypic characteristics of Dickeya spp. in Taiwan and provided information useful for their identification. The study also presented the first evidence showing that D. undicola, a recently identified species inhabiting surface waters, could naturally infect plants.

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Section: Introductionmentioning

confidence: 99%

Phylogenetic and phenotypic analyses on Dickeya spp. isolated from different host plants in Taiwan

Wei

Deng

Chu

2021

Journal of Phytopathology

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Pectobacterium and Dickeya: Environment to Disease Development

Toth

Barny

Brurberg

et al. 2021

Plant Diseases Caused by Dickeya and Pectobacterium Species

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Article 25fa states that the author of a short scientific work funded either wholly or partially by Dutch public funds is entitled to make that work publicly available for no consideration following a reasonable period of time after the work was first published, provided that clear reference is made to the source of the first publication of the work.This publication is distributed under The Association of Universities in the Netherlands (VSNU) 'Article 25fa implementation' project. In this project research outputs of researchers employed by Dutch Universities that comply with the legal requirements of Article 25fa of the Dutch Copyright Act are distributed online and free of cost or other barriers in institutional repositories. Research outputs are distributed six months after their first online publication in the original published version and with proper attribution to the source of the original publication.

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Dickeya dadantii (bacterial wilt and soft rot of ornamentals and potato)

Osdaghi¹

2022

CABI Compendium

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First Report of Dickeya dadantii Causing Stem Rot of Poinsettia in Taiwan

Cited by 7 publications

References 5 publications

Phylogenetic and phenotypic analyses on Dickeya spp. isolated from different host plants in Taiwan

Phylogenetic and phenotypic analyses on Dickeya spp. isolated from different host plants in Taiwan

Pectobacterium and Dickeya: Environment to Disease Development

Dickeya dadantii (bacterial wilt and soft rot of ornamentals and potato)

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