Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em>
Summary. Phaeomoniella chlamydospora (Pch) is one of the main causal agents of tracheomycosis in grapevine. We characterize how this fungus affects the response of Vitis vinifera cv. Cabernet Sauvignon to bark and xylem-tissue wounding after six weeks post-treatment. A histological investigation sho...
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| Format: | Article |
| Language: | English |
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Firenze University Press
2013-07-01
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| Series: | Phytopathologia Mediterranea |
| Subjects: | |
| Online Access: | https://oajournals.fupress.net/index.php/pm/article/view/5522 |
| _version_ | 1828333379340206080 |
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| author | Jérôme POUZOULET Alban JACQUES Xavier BESSON Jean DAYDE Nathalie MAILHAC |
| author_facet | Jérôme POUZOULET Alban JACQUES Xavier BESSON Jean DAYDE Nathalie MAILHAC |
| author_sort | Jérôme POUZOULET |
| collection | DOAJ |
| description | Summary. Phaeomoniella chlamydospora (Pch) is one of the main causal agents of tracheomycosis in grapevine. We characterize how this fungus affects the response of Vitis vinifera cv. Cabernet Sauvignon to bark and xylem-tissue wounding after six weeks post-treatment. A histological investigation shows that, in xylem tissue, cell-wall modifications in response to wounding are related to suberin deposits rather than to lignin-induced wall thickening. The xylem response does not appear to be disturbed by Pch infection. Therefore, cell-wall modification strongly inhibits the development of wound-closure tissue (WCT) but does not prevent the differentiation of the necro-phylactic periderm. Hyphae localization in tissue surrounding the wound or inoculation sites indicates that Pch colonizes all cell types, such as vascular tissues, paratracheal parenchyma cells, fibers and rays. The results also suggest that efficient compartmentalization separating fascicular xylem portions is assured by thick suberized cell walls bordering the ray parenchyma. |
| first_indexed | 2024-04-13T21:18:24Z |
| format | Article |
| id | doaj.art-1e6c831787094cfdb190510735ff8167 |
| institution | Directory Open Access Journal |
| issn | 0031-9465 1593-2095 |
| language | English |
| last_indexed | 2024-04-13T21:18:24Z |
| publishDate | 2013-07-01 |
| publisher | Firenze University Press |
| record_format | Article |
| series | Phytopathologia Mediterranea |
| spelling | doaj.art-1e6c831787094cfdb190510735ff81672022-12-22T02:29:35ZengFirenze University PressPhytopathologia Mediterranea0031-94651593-20952013-07-0152210.14601/Phytopathol_Mediterr-1258111335Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em>Jérôme POUZOULET0Alban JACQUES1Xavier BESSON2Jean DAYDE3Nathalie MAILHAC4Ecole d'Ingénieurs de Purpan, 75, voie du TOEC, 31076 ToulouseEcole d'Ingénieurs de Purpan, 75, voie du TOEC, 31076 ToulouseLVVD, ZA du Landreau, 49610 Mozé sur LouetEcole d'Ingénieurs de Purpan, 75, voie du TOEC, 31076 ToulouseEcole d'Ingénieurs de Purpan, 75, voie du TOEC, 31076 ToulouseSummary. Phaeomoniella chlamydospora (Pch) is one of the main causal agents of tracheomycosis in grapevine. We characterize how this fungus affects the response of Vitis vinifera cv. Cabernet Sauvignon to bark and xylem-tissue wounding after six weeks post-treatment. A histological investigation shows that, in xylem tissue, cell-wall modifications in response to wounding are related to suberin deposits rather than to lignin-induced wall thickening. The xylem response does not appear to be disturbed by Pch infection. Therefore, cell-wall modification strongly inhibits the development of wound-closure tissue (WCT) but does not prevent the differentiation of the necro-phylactic periderm. Hyphae localization in tissue surrounding the wound or inoculation sites indicates that Pch colonizes all cell types, such as vascular tissues, paratracheal parenchyma cells, fibers and rays. The results also suggest that efficient compartmentalization separating fascicular xylem portions is assured by thick suberized cell walls bordering the ray parenchyma.https://oajournals.fupress.net/index.php/pm/article/view/5522Grapevine vine-trunk diseasePhaeomoniella chlamydosporaCODITcompartmentalization |
| spellingShingle | Jérôme POUZOULET Alban JACQUES Xavier BESSON Jean DAYDE Nathalie MAILHAC Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> Phytopathologia Mediterranea Grapevine vine-trunk disease Phaeomoniella chlamydospora CODIT compartmentalization |
| title | Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> |
| title_full | Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> |
| title_fullStr | Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> |
| title_full_unstemmed | Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> |
| title_short | Histopathological study of response of <em>Vitis vinifera</em> cv. Cabernet Sauvignon to bark and wood injury with and without inoculation by <em>Phaeomoniella chlamydospora</em> |
| title_sort | histopathological study of response of em vitis vinifera em cv cabernet sauvignon to bark and wood injury with and without inoculation by em phaeomoniella chlamydospora em |
| topic | Grapevine vine-trunk disease Phaeomoniella chlamydospora CODIT compartmentalization |
| url | https://oajournals.fupress.net/index.php/pm/article/view/5522 |
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