Abstract:
:The growth, duplication and fate of multikaryotic hyphae bearing true clamp connections, as derived from compatible matings of Schizophyllum commune, were studied by phase contrast microscopy. The nuclei (N) of multikaryotic apices maintained a near central position during hyphal growth. True clamp connection formation occurred with near synchronous mitosis followed by septal synthesis across the clamp neck and main hyphal axis. Nuclear progeny after mitosis in a hexakaryon included 6 N in the apex, 1 N in the clamp and 5 N in the penultimate cell; the solitary nucleus in the clamp later entered the penultimate cell. Similar events occurred for clamp connection formation and mitosis in the trikaryon, quadrikaryon or pentakaryon, whether in the apex or primary branches. Nuclear content of the multikaryotic apex (2 N through 10 N) had no apparent effect on the rate of individual hyphal growth. Reduction of the nuclear number in a trikaryon occurred by long-term entrapment of a solitary nucleus in the clamp and subsequent outgrowth of the dikaryotic penultimate cell. Occasionally, more than one nucleus became entrapped in the clamp cell. The ephemeral nature of the multikaryon was indicated by the fact that older cultures appeared to be exclusively dikaryotic hyphae at the colony periphery.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Niederpruem DJdoi
10.1007/BF00406155subject
Has Abstractpub_date
1980-12-01 00:00:00pages
172-8issue
2eissn
0302-8933issn
1432-072Xjournal_volume
128pub_type
杂志文章abstract::The fate of 35S label was studied during cystine degradation by mycelia of the dermatophytic fungus Microsporum gypseum. Excess free cystine in the medium was readily taken up and its sulfur moiety excreted as inorganic sulfate and sulfite. At intervals after 3-60 min of incubation with 35S cystine the products of cys...
journal_title:Archives of microbiology
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journal_title:Archives of microbiology
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journal_title:Archives of microbiology
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journal_title:Archives of microbiology
pub_type: 杂志文章
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更新日期:1981-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:1977-05-13 00:00:00
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journal_title:Archives of microbiology
pub_type: 杂志文章
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更新日期:1989-01-01 00:00:00
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journal_title:Archives of microbiology
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更新日期:1994-01-01 00:00:00
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journal_title:Archives of microbiology
pub_type: 杂志文章
doi:10.1007/BF00429648
更新日期:1987-06-01 00:00:00
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更新日期:1997-01-01 00:00:00
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journal_title:Archives of microbiology
pub_type: 杂志文章
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更新日期:2008-11-01 00:00:00
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journal_title:Archives of microbiology
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更新日期:2001-01-01 00:00:00
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journal_title:Archives of microbiology
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更新日期:2004-05-01 00:00:00
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journal_title:Archives of microbiology
pub_type: 杂志文章
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更新日期:2001-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:1996-03-01 00:00:00