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Histopathological studies on grapevine die-back [electronic resource].

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Atia, M. M

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Language: English Summary language: Arabic Description: p.25-40Other title:

دراسات على التشريح المرضى لمرض موت الأطارف ( الموت الرجعى ) فى العنب [Added title page title]

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Egyptian journal of agricultural research, 2012 v. 90 (3) , Special issue [electronic resource]:

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In: Egyptian Journal of Agricultural Research 2012.v.90(3),SISummary: Histopathological investigations of Botryodiplodia theobromae Pat., Phomopsis viticola sacc. And Fusarium solani (Mart.) sacc. on artificially inoculated grapevine shoots revealed the induction of various cytological and histological defects. Immediately after inoculation (ai), the investigated sections exhibited similar structure in both inoculated and non-inoculated shoots. Seven days after Inoculation (day), 8. theobromae induced disorganized epidermal and cortical cells with a dark brown color consisting of plasmolysis cells and tissues. No such disorders were noticed in case of Ph. viticola or F. solani. The above mentioned pathogenic fungal hyphae were clearly noticed 21 day in both xylem parenchyma and xylem vessels causing necrosis at these tissues. Not only the pathogenic fungi caused necrosis in xylem parenchyma and xylem vessels, but also colonized the tissues with their hyphae and dark inclusions bodies as well as abundant production of tyloses were clearly noticed.

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Histopathological investigations of Botryodiplodia theobromae Pat., Phomopsis viticola sacc. And Fusarium solani (Mart.) sacc. on artificially inoculated grapevine shoots revealed the induction of various cytological and histological defects. Immediately after inoculation (ai), the investigated sections exhibited similar structure in both inoculated and non-inoculated shoots. Seven days after Inoculation (day), 8. theobromae induced disorganized epidermal and cortical cells with a dark brown color consisting of plasmolysis cells and tissues. No such disorders were noticed in case of Ph. viticola or F. solani. The above mentioned pathogenic fungal hyphae were clearly noticed 21 day in both xylem parenchyma and xylem vessels causing necrosis at these tissues. Not only the pathogenic fungi caused necrosis in xylem parenchyma and xylem vessels, but also colonized the tissues with their hyphae and dark inclusions bodies as well as abundant production of tyloses were clearly noticed.

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