Silver staining of lily microsporocytes during meiotic prophase.
نویسندگان
چکیده
منابع مشابه
Characterization of cDNAs induced in meiotic prophase in lily microsporocytes.
To identify and analyze genes functioning during reproductive cell formation in higher plants, cDNAs harboring the messages induced in meiotic prophase were isolated and characterized. A cDNA library constructed from microsporocytes in meiotic prophase of Lilium longiflorum was screened with a subtraction probe specific to meiotic prophase. Clones selected were classified into 18 groups by cros...
متن کاملChanges in intracellular cAMP level and activities of adenylcyclase and phosphodiesterase during meiosis of lily microsporocytes.
In the yeasts, Saccharomyces cerevisiae and Schyzosaccharomyces pombe, reduction of intracellular cyclic adenosine monophosphate (cAMP) is known to trigger the sporulation processes by activating various meiosis specific genes. In order to ascertain whether a similar mechanism is operative in higher plants, we carried out preliminary studies on lily microsporocytes. Measurement of cAMP levels a...
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REC8 is a master regulator of chromatin structure and function during meiosis. Here, we dissected the functions of absence of first division (afd1), a maize rec8/alpha-kleisin homolog, using a unique afd1 allelic series. The first observable defect in afd1 mutants is the inability to make a leptotene chromosome. AFD1 protein is required for elongation of axial elements but not for their initial...
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Histone H3 lysine 9 (H3K9) methylation is a crucial epigenetic mark of heterochromatin formation and transcriptional silencing. G9a is a major mammalian H3K9 methyltransferase at euchromatin and is essential for mouse embryogenesis. Here we describe the roles of G9a in germ cell development. Mutant mice in which G9a is specifically inactivated in the germ-lineage displayed sterility due to a dr...
متن کاملChromosome mobility during meiotic prophase in Saccharomyces cerevisiae.
In many organisms, a synaptonemal complex (SC) intimately connects each pair of homologous chromosomes during much of the first meiotic prophase and is thought to play a role in regulating recombination. In the yeast Saccharomyces cerevisiae, the central element of each SC contains Zip1, a protein orthologous to mammalian SYCP1. To study the dynamics of SCs in living meiotic cells, a functional...
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ژورنال
عنوان ژورنال: Cell Structure and Function
سال: 1987
ISSN: 0386-7196,1347-3700
DOI: 10.1247/csf.12.197