First Report of Pectobacterium aroidearum Causing Soft Rot Disease of White Calla Lily in Taiwan

Chen, L. R.; Lin, Pei-Rong; Huang, Chang‐Jen

doi:10.1094/pdis-07-19-1462-pdn

Cited by 3 publications

(2 citation statements)

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“…The pectinolytic soft rot Pectobacteriaceae, a group of bacterial plant pathogens, consists of two genera: Pectobacterium and Dickeya (Adeolu et al, 2016). Recently, Pectobacterium aroidearum has been reported to affect various plants, including alocasia, konjac, Chinese cabbage, and pumpkin (Chen et al, 2020;Mikicińsk et al, 2023;Moraes et al, 2017;Wei et al, 2020;Xie et al, 2018;Xu et al, 2020). However, P. aroidearum has never been reported to cause soft rot disease in F. carica.…”

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“…in Ja- maica, Persea americana, Ornithogalum dubium in Israel, and Amorphophallus konjac in East Asia (Li et al, 2022;Nabhan et al, 2013;Sun et al, 2019). Recent studies have confirmed the presence of P. aroidearum in several plant species, including alocasia, konjac, Chinese cabbage, and pumpkin (Chen et al, 2020;Mikicińsk et al,2023;Moraes et al, 2017;Wei et al, 2020;Xie et al, 2018;Xu et al, 2020). However, there have been no recorded cases of P. aroidearum causing soft rot disease in figs until now.…”

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First Report of Pectobacterium aroidearum Causing Soft Rot on Ficus carica in Korea

Park,

Ten,

Hong

et al. 2024

Res. Plant Dis

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In July 2021, symptoms of soft rot were observed on the stems of Ficus carica in Yeongam, Jeollanamdo, Korea. To accurately diagnose the cause, infected stem was collected and bacterial strain was isolated. Among these, the pathogenic strain KNUB-08-21 was identified as Pectobacterium aroidearum through 16S rRNA gene sequencing and phylogenetic analysis based on the concatenated sequences of the dnaX, leuS, and recA genes. The affiliation of the isolate with this bacterial species was also confirmed by its biochemical characteristics obtained using API ID 32 GN system. Artificial inoculation confirmed the strain’s pathogenicity in figs, causing significant damage to both stems and fruits. To our knowledge, this is the first report of P. aroidearum causing soft rot disease in F. carica in Korea.

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First Report of Pectobacterium aroidearum Causing Soft Rot on Ficus carica in Korea

Park,

Ten,

Hong

et al. 2024

Res. Plant Dis

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Pectobacterium aroidearum

2021

CABI Compendium

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Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022

Ma,

Zhang,

Stodghill

et al. 2024

Front. Microbiol.

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IntroductionSoft rot Pectobacteriaceae (SRP) bacteria are globally dispersed pathogens that cause significant economic loss in potato and other crops. Our understanding of the SRP species diversity has expanded in recent years due to advances and adoption of whole-genome sequence technologies. There are currently 34 recognized SRP species that belong to the Dickeya and Pectobacterium genera.MethodsWe used whole-genome sequencing based analysis to describe the current distribution and epidemiology of SRP isolated from diseased potato samples obtained from commercial potato cropping systems in the United States. Our primary objectives in the present study were to: (1) identify the species of these SRP isolates recovered from potato samples across 14 states in the US, (2) describe the variation among SRP isolates from various US locations and track their temporal changes, and (3) evaluate the evolutionary relationships among these SRP isolates to deduce their source. We collected 118 SRP strains from diseased potato plants and tubers in 14 states between 2015 and 2022.ResultsWe identified three Dickeya and eight Pectobacterium species from diseased potato samples. Dickeya dianthicola, Pectobacterium parmentieri, P. carotovorum, and P. versatile appeared to be the predominant species, constituting 83% of the isolates. Furthermore, all D. dianthicola strains studied here as well as 90% of US D. dianthicola isolates sequenced to date exhibit significant clonality.DiscussionThe prevalence of this specific group of D. dianthicola, temporally and geographically, aligns with the occurrence of blackleg and soft rot outbreaks in the northeastern US after 2014. The genomic diversity observed in P. parmentieri implies multiple introductions to the US from at least four distinct sources, earlier than the arrival of the predominant group of D. dianthicola. In contrast, P. carotovorum and P. versatile appear to be widespread, long-term endemic strains in the US.

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First Report of Pectobacterium aroidearum Causing Soft Rot Disease of White Calla Lily in Taiwan

Cited by 3 publications

References 4 publications

First Report of Pectobacterium aroidearum Causing Soft Rot on Ficus carica in Korea

First Report of Pectobacterium aroidearum Causing Soft Rot on Ficus carica in Korea

Pectobacterium aroidearum

Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022

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