First Report of Bacterial Soft Rot Disease on Mammillaria mystax Caused by Enterobacter cloacae subsp. dissolvens in Mexico

Reyes-García, Guadalupe; Ortega-Acosta, Santo Ángel; Palemón-Alberto, Francisco; Romero‐Ramírez, Yanet; Toribio-Jiménez, Jeiry; Vargas-Álvarez, Dolores; Damián-Nava, Agustín; Cruz-Lagunas, Blas

doi:10.1094/pdis-08-19-1662-pdn

Cited by 2 publications

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“…For example, symptoms of infected ginger consisting primarily of water‐soaked tubers and rotted vascular bundles are caused by Enterobacter asburae (Zhang et al, 2020). Another species, Enterobacter cloacae , causes brownish soft, watery patches in the tubercles of Mammillaria mystax , and tan‐to‐brown rotten tissue in onion bulbs (Reyes‐García et al, 2020; Schroeder et al, 2009). Members of Erwinia and Pectobacterium are also recognized as pathogenic agents of soft rot in potatoes (Pérombelon, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…Many of these bacteria are capable of inducing soft rot in a wide range of host crops, vegetables, fruits and ornamentals plants that eventually culminates in severe yield loss. Particularly affected and well‐studied are Zea mays (Prokić et al, 2020), Solanum tuberosum (Sławiak et al, 2009), Allium cepa (Ma et al, 2020), Prunus persica (Ahmad et al, 2021), Mammillaria mystax (Reyes‐García et al, 2020) and Phalaenopsis orchid (Alič et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Identification and characterization of pathogenicity of Lelliottia nimipressuralis causing soft rot of Codonopsis pilosula (dangshen) roots in China

et al. 2022

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The roots of Codonopsis pilosula, a crucial ingredient in Chinese medicine, are prone to soft rot disease soon after transplanting seedlings in the second year. This almost always causes severe losses in yield at harvest, with severe economic consequences for farmers of this perennial vine. However, the pathogens involved remain understudied, although some gram‐negative bacteria of the Enterobacteriaceae family are well‐known pathogens of soft rot in many other plants. Here, the isolate B5‐2‐1‐30 was suspected of being a key pathogen of C. pilosula in China according to counts of bacteria from diseased, healthy and adjacent tissues of roots. Results of morphological and phylogenetic analyses, including microscopic observations, in addition to a multilocus sequence analysis (MLSA) of the concatenated partial 16S rDNA, rpoB, atpD and gyrB genes, revealed that this isolate belongs to Lelliottia nimipressuralis. In vitro and in vivo pathogenicity tests showed that L. nimipressuralis B5‐2‐1‐30 could cause root soft rot in seedlings of C. pilosula, with symptoms similar to those observed in the field. Further experiments suggested the typical symptoms of softened rotting roots and wilting shoots arose from phloem necrosis and vessel plugging, as inferred by observed anatomical characteristics of roots, providing clues for elucidating the infection mechanism of phytopathogens in L. nimipressuralis.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Identification and characterization of pathogenicity of Lelliottia nimipressuralis causing soft rot of Codonopsis pilosula (dangshen) roots in China

et al. 2022

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Enterobacter

Coutinho,

de Maayer,

Jordan

et al. 2024

Bergey's Manual of Systematics of Archaea and Bacteria

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En.te.ro.bac'ter. Gr. neut. n. enteron , intestine; N.L. masc. n. bacter , a small rod; N.L. masc. n. Enterobacter , intestinal small rod. Pseudomonadota / Gammaproteobacteria / Enterobacterales / Enterobacteriaceae / Enterobacter Cells of the genus Enterobacter are Gram‐stain‐negative, straight rods (0.3–2.0 μm × 1.8–5.0 μm), and the majority are motile with peritrichous flagella. The optimal growth temperature is 30°C, with clinical strains growing at 37°C. They are facultatively anaerobic, ferment glucose with the production of acid and gas, and reduce nitrate to nitrite. The majority of strains are positive for Voges–Proskauer, arginine dihydrolase, and ornithine decarboxylase and negative for indole, lysine decarboxylase, and H 2 S production. The major fatty acids are C 16:0 , C 18:1 ω7 c , C 17:0 cyclo, and summed feature 2 (iso‐C 16:1 and/or C 14:0 3‐OH). The fatty acids C 13:0 and summed feature 1 (C 15:1 iso H and/or C 13:0 3‐OH) are generally present in low amounts (minimum 1.4 and 1.6% of the total amount, respectively). Genome‐based phylogenetic analyses separate the majority of species of this genus; the exception is Enterobacter siamensis for which no genome sequence is available. They are widely distributed in nature, occurring in clinical, terrestrial, and aquatic environments. DNA G + C content (mol%) : 52–58.5 ( T m ). Type species : Enterobacter cloacae AL .

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First Report of Bacterial Soft Rot Disease on Mammillaria mystax Caused by Enterobacter cloacae subsp. dissolvens in Mexico

Cited by 2 publications

References 2 publications

Identification and characterization of pathogenicity of Lelliottia nimipressuralis causing soft rot of Codonopsis pilosula (dangshen) roots in China

Identification and characterization of pathogenicity of Lelliottia nimipressuralis causing soft rot of Codonopsis pilosula (dangshen) roots in China

Enterobacter

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