ULTRASTRUCTURE OF VEGETATIVE ORGANIZATION AND CELL-DIVISION IN GLAUCOSPHAERA-VACUOLATA KORSHIKOV (PORPHYRIDIALES, RHODOPHYTA)

被引:12
作者
BROADWATER, ST [1 ]
SCOTT, JL [1 ]
GOSS, SPA [1 ]
SAUNDERS, BD [1 ]
机构
[1] MED COLL WISCONSIN,BIOPHYS RES INST,MILWAUKEE,WI 53226
关键词
D O I
10.2216/i0031-8884-34-5-351.1
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The ultrastructure of vegetative cells and cell division has been examined in Glaucosphaera vacuolata Korshikov. Features either not found or not denoted before include apparent intercisternal fusions within each Golgi body and fibrillar tracts possibly utilized by Golgi vesicles. Mitosis is closed except for large polar gaps and a spherical, presumptive MTOC (microtubule organizing centre) is present at prophase. The MTOC Battens by metaphase to fill the polar gap, becoming the focus of spindle microtubules. No NAO (nucleus associated organelle) was observed. All aspects of mitosis except the absence of an NAO are consistent with mitosis in red algae; most are not consistent with members of the Glaucophyta. Characteristics of mitosis and vegetative features, both those newly observed and those confirmed (especially the presence of connections between chloroplast lobes), support the removal of G. vacuolata from the Glaucophyta and its placement in the Rhodophyta. Also noted in this investigation were potential pyrenoid regions of the chloroplast and large complex bodies in the cytoplasm of dividing and non-dividing cells. The latter structures appear to be polycomplexes (polymerized units of the synaptonemal complex).
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页码:351 / 361
页数:11
相关论文
共 20 条
[11]   TYPIFICATION OF THE GLAUCOCYSTOPHYTA [J].
KIES, L ;
KREMER, BP .
TAXON, 1986, 35 (01) :128-133
[12]  
KORSHIKOV AA, 1930, ARCH PROTISTENKD, V95, P217
[13]   A BIOCHEMICAL AND ULTRASTRUCTURAL EVALUATION OF THE TAXONOMIC POSITION OF GLAUCOSPHAERA-VACUOLATA KORSH [J].
MCCRACKEN, DA ;
NADAKAVUKAREN, MJ ;
CAIN, JR .
NEW PHYTOLOGIST, 1980, 86 (01) :39-&
[15]   REDUCTION OF FADING OF FLUORESCENT REACTION-PRODUCT FOR MICROPHOTOMETRIC QUANTITATION [J].
PICCIOLO, GL ;
KAPLAN, DS .
ADVANCES IN APPLIED MICROBIOLOGY, 1984, 30 :197-234
[16]  
Pueschel C. M., 1990, BIOL RED ALGAE, P7
[17]   GLAUCOSPHAERA-VACUOLATA, ITS ULTRASTRUCTURE AND PHYSIOLOGY [J].
RICHARDSON, FL ;
BROWN, TE .
JOURNAL OF PHYCOLOGY, 1970, 6 (02) :165-+
[18]   ULTRASTRUCTURE OF CELL-DIVISION IN THE UNICELLULAR RED ALGA PORPHYRIDIUM-PURPUREUM [J].
SCHORNSTEIN, KL ;
SCOTT, J .
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE, 1982, 60 (01) :85-97
[19]  
Sheath R., 1990, BIOL RED ALGAE, P123
[20]  
STARR RC, 1971, J PHYCOL, V7, P350