Results 121 to 130 of about 554 (149)

Scanning Electron Microscopy of Eimeria tenella Microgametogenesis and Fertilization

The Journal of Parasitology, 1977
Microgametes of Eimeria tenella were observed in cecal tissue from infected chicks killed six days after inoculation with oocysts. Development from the microgamont stage to maturity was followed. We observed three commonly found, but distinctly different, stages in developing microgametes while they were still associated with microgamonts. In the first,
P A, Madden, J M, Vetterling
openaire   +2 more sources

Fine structural study of the microgametogenesis of Eimeria auburnensis

Zeitschrift f�r Parasitenkunde, 1969
The microgametogenesis of Eimeria auburnensis from experimentally infected calves killed 16 to 18 days after inoculation was investigated with the electron microscope. Early microgametocytes had nuclei with compact nucleoli and relatively few electron-dense masses.
D M, Hammond, E, Scholtyseck, B, Chobotar   +2 more
openaire   +2 more sources

Morphogenesis, megagametogenesis, and microgametogenesis in Actinidia arguta flower buds

Scientia Horticulturae
Guangli Shi
exaly   +2 more sources

Electron microscope studies of microgametogenesis in coccidia and related groups

Zeitschrift f�r Parasitenkunde, 1972
The fine structure of the microgamonts and microgametes of coccidia and related groups was investigated and is herein described and diagrammatically depicted. Particular attention is given to the developmental processes during the differentiation of the microgametes. The species included in the study are: Eimeria perforans, E. maxima, E.
E, Scholtyseck, H, Mehlhorn, D M, Hammond   +2 more
openaire   +2 more sources

The Fine Structure of Microgametogenesis in Haemoproteus columbae Kruse*

The Journal of Protozoology, 1968
SYNOPSIS. The structural changes leading to the formation of motile microgametes from a single immobile intracellular gametocyte have been examiued in the electron microscope. After pigeon blood infected with Haemoproteus columbae was exposed to the air at room temperature for a few minutes axonemes appeared in the parasite's cytoplasm and the ...
P C, Bradbury, W, Trager
openaire   +2 more sources

Fine structure of leucocytozoon caulleryi during microgametogenesis and fertilization

Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. 1. Abt. Originale. A, Medizinische Mikrobiologie, Infektionskrankheiten und Parasitologie, 1984
The fine structure of microgametogenesis and fertilization in Leucocytozoon caulleryi was studied. When the peripheral blood of chickens containing mature gametocytes was withdrawn or ingested by Culicoides arakawae , differentiation of the microgametocytes began immediately.
T, Morii, T, Iijima, M, Fukuda
openaire   +2 more sources

Arabidopsis exocyst subunit SEC6 is involved in cell plate formation during Microgametogenesis

Biochemical and Biophysical Research Communications, 2022
Cytokinesis during pollen mitosis I is critical for cell division and differentiation in the male gametophyte development, but the vesicle trafficking mechanisms in this process are largely unknown. Exocyst is an octameric tethering complex which plays multiple important roles in plant cell vesicle trafficking.
Xiaoyun Tan, Haoyue Xu, Jie Ye, Jin Wang, Wenlong Liu, Feng Liu, Qingchen Rui, Yiqun Bao   +7 more
openaire   +2 more sources

Mitochondrial atp6 transcript editing during microgametogenesis in male-sterile sorghum

Current Genetics, 2001
A marked reduction of mitochondrial atp6 transcript-editing capability in sorghum anthers and pollen has been invoked as a factor in the loss of viability of male gametophytes in lines carrying the IS1112C male-sterile cytoplasm. We initiated a systematic examination of transcript editing of sorghum atp6 during microgametogenesis, from microspores ...
D R, Pring, H, Van Tang
openaire   +2 more sources

Ultrastructural observations of microgametogenesis in Eimeria bakuensis (Syn. E. ovina) of sheep

Parasitology Research, 1988
The ultrastructure of microgametogenesis of Eimeria bakuensis was studied in the intestinal epithelium of an experimentally infected sheep. During development the nuclei became situated peripherally in the microgamont. Nuclear chromatin condensed into peripheral, dense portions that became the nuclei of the microgametes.
S J, Ball, R M, Pittilo
openaire   +2 more sources

Microsporogenesis and microgametogenesis of Cardiospermum grandiflorum and Urvillea chacoensis (Sapindaceae, Paullinieae)

Australian Journal of Botany, 2010
Microsporogenesis and microgametogenesis of two species, Cardiospermum grandiflorum Sw. and Urvillea chacoensis Hunz. (Sapindaceae, Paullinieae), were studied using light and transmission electron microscopy. Both species are monoecious, with staminate and hermaphrodite, although functionally pistillate, flowers.
Stella M. Solís, Beatriz Galati, María S. Ferrucci   +2 more
openaire   +1 more source