Results 161 to 170 of about 1,993 (204)

Sporogenesis in Streptomyces melanochromogenes

Archives of Microbiology, 1978
The mode of spore differentiation in a strain of Streptomyces melanochromogenes was followed by analysis of ultrathin sections of sporulating aerial hyphae at various stages of sporogenesis. A special accent was laid on the formation of the sporulation septum and its alterations in the course of spore delimitation and separation.
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Male and female sporogenesis and gametogenesis in apomictic Brachiaria brizantha, Brachiaria decumbens and F1 hybrids with sexual colchicine induced tetraploid Brachiaria ruziziensis

Euphytica, 1994
A calendar of female sporogenesis and gametogenesis was made for both apomictic tetraploid (2n = 4x = 36) Brachiaria brizantha and Brachiaria decumbens and their apomictic Fl hybrids with sexual tetraploid (2n = 4x = 36) Brachiaria ruziziensis ...
Lutts, Stanley, Louant, BP., Ndikumana, J.   +2 more
exaly   +1 more source

Role of glutamate in the sporogenesis of Bacillus cereus

Journal of Bacteriology, 1977
Bacillus cereus T, sporulating in a chemically defined medium under optimum conditions, requires substrate quantities of glutamate during the first 4 h of sporogenesis. Seventy percent of the glutamate utilized was catabolized to CO2 during this period, with the remaining glutamate carbon assimilated into various spore constituents, principally protein
J F, Charba, H M, Nakata
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In vitro sporogenesis in a fern

Zeitschrift für Pflanzenphysiologie, 1972
Summary In vitro developed plants of Ceratopteris thalictroides, obtained from gametophytes, developed sporangia and functional spores on a simple nutrient medium. Fertility was beset with senescence.
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Sporogenesis and gametogenesis of some Boraginaceae

Feddes Repertorium, 1992
AbstractEmbryological details pertaining to the development and structure of anther and ovule, sporogenesis, gametogenesis and gametophytes of 9 species of 7 genera belonging to Boraginaceae are described. Anther is tetrasporangiate with ‘Dicotyledonous type’ of wall development.
B. Hanumantha Rao, P. S. Prakasa Rao
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‘Endogenous Factor’ in Sporogenesis in Bacteria

Nature, 1963
EXTENSIVE investigations on the morphological changes during sporogenesis have afforded valuable information about this phenomenon1. The initiation of eporulation can be better understood if the metabolic events during the transition from a vegetative cell to its sporulating phase are known. Several attempts have been made to investigate the physiology
V. R. SRINIVASAN, H. ORIN HALVORSON
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Sporogenesis in Reboulia hemisphaerica

Botanical Gazette, 1926
1. The premeiotic protoplast shrinks away from its angular sporogenous walls. Within the space created it secretes a special external membrane that functions as the wall of the spore mother cell. 2. A marked contraction of the nuclear network is preliminary to the reduction division.
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Substructural study of sporogenesis in Streptomyces griseus

Zeitschrift für allgemeine Mikrobiologie, 1984
AbstractA Streptomyces griseus strain deficient in the formation of aerial mycelium and arthrospore development (Amy−) was studied by electron microscopy and compared with the sporulating parental strain (Amy+). The investigations were performed with colonies grown on solid medium.
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Accumulation of Free Proline during Yeast Sporogenesis

Nature, 1963
ALTHOUGH the composition of the pool of free amino-acids in the yeast cell has been much investigated, this has been done using commercially supplied yeast1,2 or vegetative cells from growth cultures3,4. No work has been reported on the amino-acid content of sporulated cells. We have undertaken to compare vegetative, sporulating and sporulated cells in
C, RAMIREZ, J J, MILLER
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Sporogenesis and gametogenesis in some Cyperaceae

Proceedings / Indian Academy of Sciences, 1976
The paper is an account of some salient embryological features in four genera and five species belonging to the family Cyperaceae (Eleocharis atropurpurea, E. congesta, Fimbristylis tetragona, Fuirena trilobites andScirpus lateriflorus). InE. atropurpurea double pollen grains are occasionally observed. Their significance in systematic considerations of
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