2004
DOI: 10.1007/s11557-006-0084-x
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Irregular growth forms and cell wall modifications, polygalacturonase detection, and endocell formation in Fusarium oxysporum f. sp. radicis-lycopersici infecting tomato plants, as studied ultrastructurally and cytochemically

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Cited by 12 publications
(22 citation statements)
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“…Although the OPs were not detected in that matter in vessel lumina in the resistant plants, they were associated with it in parenchyma cells. As shown here and in previous reports (Charest et al 2004;Ouellette and Rioux 1993;Ouellette et al 1995Ouellette et al , 1999aOuellette et al , 1999bOuellette et al , 2001Ouellette et al , 2002Ouellette et al , 2004aOuellette et al , 2004bOuellette et al , 2004cOuellette et al , 2004d, the release of fungal components would also be facilitated by modifications or the local absence of fungal walls. In elms, eggplant, and staghorn sumac, large masses and long stretches of opaque matter also occur, related to tissue alterations, and small particles are likewise connected to the coating as well as to fungal cells.…”
Section: Discussionsupporting
confidence: 82%
“…Although the OPs were not detected in that matter in vessel lumina in the resistant plants, they were associated with it in parenchyma cells. As shown here and in previous reports (Charest et al 2004;Ouellette and Rioux 1993;Ouellette et al 1995Ouellette et al , 1999aOuellette et al , 1999bOuellette et al , 2001Ouellette et al , 2002Ouellette et al , 2004aOuellette et al , 2004bOuellette et al , 2004cOuellette et al , 2004d, the release of fungal components would also be facilitated by modifications or the local absence of fungal walls. In elms, eggplant, and staghorn sumac, large masses and long stretches of opaque matter also occur, related to tissue alterations, and small particles are likewise connected to the coating as well as to fungal cells.…”
Section: Discussionsupporting
confidence: 82%
“…For example, O. novo-ulmi growing in its hosts as well as on various substrates, including growth through Millipore membranes (Ouellette et al 1995), may produce various irregular growth forms and subsequently revert to so-called typical growth forms. Similar irregular growth forms were reported for Fusarium infection in carnation and tomato (Charest et al 2004;Ouellette et al 2001). …”
Section: Introductionsupporting
confidence: 80%
“…If they were of pathogen origin, it means that they could maintain a potential for infection, as shown here and in other works for more typical larger fungal cells with defective walls, particularly in microhyphae spanning, non septate, long distances in host cell walls (Charest et al 2004;Ouellette et al 2001Ouellette et al , 2002Ouellette et al , 2004a, for example). Alterations or absence of fungal walls in hyphae penetrating host walls have numerous gold particles have attached to large IEs which are delimited solely by opaque bands.…”
Section: Discussionsupporting
confidence: 59%
“…Observations of the apparent absence of a nuclear envelope in some fungal cells in the present study are also similar to those of O. novo-ulmi and of other F. oxysporum f. spp. (Chamberland and Ouellette 1977a;Charest et al 2004;Ouellette et al 2004c). It is not impossible that the components of high opacity in this OM concealed some structural DNA (see Fig.…”
Section: Discussionmentioning
confidence: 88%