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CRUCIFORM NUCLEAR DIVISION IN SOROSPHAERA VERONICAE
Author(s) -
Dylewski Daniel P.,
Braselton James P.,
Miller Charles E.
Publication year - 1978
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1978.tb06066.x
Subject(s) - biology , inner membrane , nuclear lamina , lamin , envelope (radar) , prophase , microbiology and biotechnology , anaphase , nuclear pore , chromatin , mitosis , biophysics , botany , nucleus , meiosis , nuclear protein , genetics , dna , chromosome , mitochondrion , telecommunications , radar , gene , transcription factor , computer science
Sorosphaera veronicae Schroet. is an endobiotic, holocarpic, obligately parasitic fungus presently classified in the Plasmodiophoromycetes. The ultrastructure of nuclear envelope formation in somatic nuclear division in cystosoral plasmodia was studied. The inner membrane of the nuclear envelope during prophase appears to invaginate and blebb off intranuclear membranous vesicles. The intranuclear membranous vesicles become associated with the surface of the separating chromatin in anaphase and eventually are involved in the formation of daughter nuclear envelopes within the original nuclear envelope. The sequence of nuclear envelope breakdown and reformation in S. veronicae is noteworthy because it emphasizes alternate methods of nuclear envelope formation other than the generally considered “typical” formation described in Allium cepa L.