Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt
Internal stipe necrosis of cultivated button mushrooms (Agaricus bisporus) is caused by the bacterium Ewingella americana (Enterobacteriaceae), which is part of the endogenous bacterial population in mushroom sporocarp tissues. Isolation of the causal agent of stipe necrosis led to the recovery of t...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2014-04-01
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| Series: | Phytopathologia Mediterranea |
| Subjects: | |
| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/5556 |
| _version_ | 1818775820238323712 |
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| author | Adel MADBOULY Einas EL-SHATOURY Mohamed ABOUZEID |
| author_facet | Adel MADBOULY Einas EL-SHATOURY Mohamed ABOUZEID |
| author_sort | Adel MADBOULY |
| collection | DOAJ |
| description | Internal stipe necrosis of cultivated button mushrooms (Agaricus bisporus) is caused by the bacterium Ewingella americana (Enterobacteriaceae), which is part of the endogenous bacterial population in mushroom sporocarp tissues. Isolation of the causal agent of stipe necrosis led to the recovery of three bacterial morphotypes. Ewingella americana was isolated from 90% of mushroom samples showing mild stipe browning, while Pseudomonas fluorescens and P. tolaasii were also isolated. Inoculation with E. americana into button mushroom sporocarps yielded typical browning symptoms which were distinguishable from those of the bacterial soft rot. This bacterium was re-isolated and its identification was verified, thus fulfilling Koch’s postulates. However, inoculations with P. fluorescens and P. tolaasii caused no stipe browning. The strain identities were verified by biochemical identification and through analysis of their 16S rRNA gene sequences. This study has outlined the etiology of stipe necrosis of cultivated button mushroom in Egypt, and is the first report of E. americana in this country. |
| first_indexed | 2024-12-18T11:03:07Z |
| format | Article |
| id | doaj.art-de8493334cab4d75b2e409dea4226e53 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-12-18T11:03:07Z |
| publishDate | 2014-04-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-de8493334cab4d75b2e409dea4226e532022-12-21T21:10:11ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952014-04-0153110.14601/Phytopathol_Mediterr-1322412247Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in EgyptAdel MADBOULY0Einas EL-SHATOURYMohamed ABOUZEIDAin Shams UniversityInternal stipe necrosis of cultivated button mushrooms (Agaricus bisporus) is caused by the bacterium Ewingella americana (Enterobacteriaceae), which is part of the endogenous bacterial population in mushroom sporocarp tissues. Isolation of the causal agent of stipe necrosis led to the recovery of three bacterial morphotypes. Ewingella americana was isolated from 90% of mushroom samples showing mild stipe browning, while Pseudomonas fluorescens and P. tolaasii were also isolated. Inoculation with E. americana into button mushroom sporocarps yielded typical browning symptoms which were distinguishable from those of the bacterial soft rot. This bacterium was re-isolated and its identification was verified, thus fulfilling Koch’s postulates. However, inoculations with P. fluorescens and P. tolaasii caused no stipe browning. The strain identities were verified by biochemical identification and through analysis of their 16S rRNA gene sequences. This study has outlined the etiology of stipe necrosis of cultivated button mushroom in Egypt, and is the first report of E. americana in this country.https://oajournals.fupress.net/index.php/pm/article/view/5556stipe browningbacterial diseasespathogenicity |
| spellingShingle | Adel MADBOULY Einas EL-SHATOURY Mohamed ABOUZEID Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt Phytopathologia Mediterranea stipe browning bacterial diseases pathogenicity |
| title | Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt |
| title_full | Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt |
| title_fullStr | Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt |
| title_full_unstemmed | Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt |
| title_short | Etiology of stipe necrosis of cultivated mushrooms (<em>Agaricus bosporus</em>) in Egypt |
| title_sort | etiology of stipe necrosis of cultivated mushrooms em agaricus bosporus em in egypt |
| topic | stipe browning bacterial diseases pathogenicity |
| url | https://oajournals.fupress.net/index.php/pm/article/view/5556 |
| work_keys_str_mv | AT adelmadbouly etiologyofstipenecrosisofcultivatedmushroomsemagaricusbosporuseminegypt AT einaselshatoury etiologyofstipenecrosisofcultivatedmushroomsemagaricusbosporuseminegypt AT mohamedabouzeid etiologyofstipenecrosisofcultivatedmushroomsemagaricusbosporuseminegypt |