1970
DOI: 10.1139/b70-051
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Ultrastructure of hyphomycetes. Conidium ontogeny in Peziza ostracoderma

Abstract: Light microscope and electron microscope studies of conidium ontogeny in the Chromelosporium state of Peziza ostracoderma Korf show that the solitary blastoconidia are produced synchronously on swollen elongate divergent ampullae through a process involving denticle development at localized 'soft spots' in the ampulla wall followed by a 'ballooning' of the denticle tip to form the conidium. Cytoplasm and nuclei move from the ampullae into the developing conidia. The occurrence and position of lomasomes in dent… Show more

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Cited by 20 publications
(6 citation statements)
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“…The present work shows that Oedocephalum roseum also belongs to the first group. The ultrastructural details of blastospore formation from ampullae in Chromelosporium (Hughes and Bisalputra, 1970) are essentially similar to those observed in the present study of Oedocephalum roseum: the denticle develops to its full length before the conidium forms, the ampulla wall is not ruptured at any time during denticle and conidium development, and nuclei enter the conidium late in development and before a septum develops in the conidium stalk.…”
Section: Discussionsupporting
confidence: 83%
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“…The present work shows that Oedocephalum roseum also belongs to the first group. The ultrastructural details of blastospore formation from ampullae in Chromelosporium (Hughes and Bisalputra, 1970) are essentially similar to those observed in the present study of Oedocephalum roseum: the denticle develops to its full length before the conidium forms, the ampulla wall is not ruptured at any time during denticle and conidium development, and nuclei enter the conidium late in development and before a septum develops in the conidium stalk.…”
Section: Discussionsupporting
confidence: 83%
“…This difference can only be decided with certainty, however, by using the transmission electron microscope. Cole placed Chromelosporium species in his second group on light microscopic evidence, but Hughes and Bisalputra (1970) found by means of electron microscopy that there was no rupture of the ampulla wall in the Chromelosporium state of Peziza ostracoderma and that this species therefore belonged to the first group. The present work shows that Oedocephalum roseum also belongs to the first group.…”
Section: Discussionmentioning
confidence: 99%
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“…7 may be involved in wall synthesis (Cole and Aldrich 1971;Hawes and Beckett 1977) as may the lomasomes observed in Fig. 9 (Carroll and Carroll 19746;Hughes and Bisalputra 1970). With regard to wall structure in N .…”
Section: Discussionmentioning
confidence: 95%
“…Ainsi, Greenhalgh (1967) a examink au microscope Clectronique i balayage (MEB) la cicatrice conidienne chez la forme imparfaite de quelques Xylariaceae. Hughes et Bisalputra (1970) ont suivi i l'aide du microscope Clectronique a transmission (MET) le fonctionnement de l'appareil sporif2re de Peziza ostrocoderma. Stiers et al (1973) ont CtudiC les organes de multiplication asexues chez Poronia punctata, Cole (1973) phCnomene, nous avons encore distinguk trois Ctapes successives : (a) initiation du primordium; (6) maturation conidienne; et (c) liberation des propagules (Mangenot et Reisinger 1973).…”
Section: Introductionunclassified