The structure and behavior of fungus nuclei

Olive, Lindsay S.

doi:10.1007/bf02861808

Cited by 131 publications

(51 citation statements)

References 257 publications

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“…The presence of more than one nucleus per cell in these genera is apparently not dependent on anastomosis or any other mechanism leading to heterokaryosis and the ultimate production of the sexual stage, as has been suggested by Olive (1953) as typical for many Hymenomycetes. The multinucleate condition of Thanatepho1'us and TVaitea represents a group behaviour of the nuclei which was demonstrated most clearly in those isolates in whioh two side branohes arose from the penultimate cell of a hypha.…”

Section: Discussion (A) Vegetative Phasementioning

confidence: 53%

“…Studies on isolates of Waitea circinata and a species of Cemtobasidium were included for comparison vlith those on Thanatepho1'us. Olive (1953), in his comprehensive review of the structure and behaviour of fungal nuclei, suggests that the typical life history among the Hymenomycetes involves the production by the germinating basidiospores of monokaryotic mycelia which have uninucleate cells and lack clamp connections. Most of these fungi are heterothallic, and the dikaryotic mycelium with clamp connections and binucleate cells is produced by hyphal anastomoses between compatible monokaryotic mycelia.…”

Section: Introduction (A) Taxonomymentioning

confidence: 99%

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Nuclear Distribution and Behaviour Throughout the Life Cycles of Thanatephoru8, Waitea, and Ceratobasidium Species

Flentje¹,

Stretton²,

Hawn³

1963

Aust. Jnl. Of Bio. Sci.

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and Ceratobasidium species was studied in both living and stained preparations.In the vegetative phase young cells of Thanateplwrus and Waitea commonly contained 4--12 nuclei, whereas those of Ceratobasidium were binucleate. The multinucleate condition of the vegetative cells was independent of the origin of the isolates, whether naturally occurring in the field or derived from single basidiospol'cs. In aU three genera nuclear division in the vegetative cells was found to be conjugate, followed by au even segregation of the daughter nuclei. Frequent malfunction of t.he conjugate division resulting in uneven segregation of the daughter nuclei was almost certainly the reason for different numbers of nuclei in sueeessive cells of young hyphae. No nuclear migration through septa was observed. In older hyphae, secondary septa formed without nuclear division, resulting in reduced numbers of nuclei per cell.The change from vegetative to reproductive phase was associated with septation of hyphae cutting off eells with only two nuelei. In the basidia karyogamy and meiosis oceurred, resulting in four haploid nuclei which migrated through the four sterigmata to fonn four uninucleate spores. Aberrations also occurred in the reproductive phase; three nuclei instead of two were sometimes included initially in t.he basidium or two nuclei sometimes migrated from the basidium into one spore. These aberrations complicate any genetical analysis based on single-spore cultures.

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Section: Discussion (A) Vegetative Phasementioning

confidence: 53%

Section: Introduction (A) Taxonomymentioning

confidence: 99%

Nuclear Distribution and Behaviour Throughout the Life Cycles of Thanatephoru8, Waitea, and Ceratobasidium Species

Flentje¹,

Stretton²,

Hawn³

1963

Aust. Jnl. Of Bio. Sci.

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“…The scanty genetical observations on the group can be explained more easily on the basis of diploidy rather than of haploidy. The cytological evidence taken to indicate that meiosis occurs in the oospore is far from convincing as pointed out by Olive (1953) and Sansome (1963).…”

Section: Introductionmentioning

confidence: 99%

Meiosis in Diploid and Polyploid Sex Organs of <i>Phytophthora</i> and <i>Achlya</i>

Sansome

1965

CYTOLOGIA

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“…The karyological phenomena in many Hymenomycetes have already been reported (OLIVE 1953) but investigations of this nature in India are so far very few (BosE 1937, BANERJEE et al 1955, 1956, 1957, 1960, 1961. It is, therefore, worthwhile to study the karyological conditions in the life-cycle of Flammula dilepis B.…”

Section: Introductionmentioning

confidence: 99%

Contribution to the Cytology of Hymenomycetes. VI. Karyological Studies inFlammula DilepisB. & Br.

Banerjee

Nandi

1962

Caryologia

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The structure and behavior of fungus nuclei

Cited by 131 publications

References 257 publications

Nuclear Distribution and Behaviour Throughout the Life Cycles of Thanatephoru8, Waitea, and Ceratobasidium Species

Nuclear Distribution and Behaviour Throughout the Life Cycles of Thanatephoru8, Waitea, and Ceratobasidium Species

Meiosis in Diploid and Polyploid Sex Organs of <i>Phytophthora</i> and <i>Achlya</i>

Contribution to the Cytology of Hymenomycetes. VI. Karyological Studies inFlammula DilepisB. & Br.

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