Heterochromatin in Anthers of <i>Reseda arabica</i>
نویسندگان
چکیده
منابع مشابه
Colchicine-induced paracrystals in the tapetum of wheat anthers.
Prolonged colchicine treatment induced the formation of numerous cytoplasmic para-crystals in tapetal cells of wheat anthers containing germ line cells at pre-meiotic mitosis or early pre-meiotic interphase. Such paracrystals were up to 8 microns long and 0.7 microns in diameter, and filled up to about 8% of the volume of the cytoplasm. Paracrystals were not bounded by a membrane. A paracrystal...
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We used proteomic analysis to investigate the changing patterns of protein synthesis during pollen development in anthers from rice plants grown under strictly controlled growth conditions. Cytological analysis and external growth measurements such as anther length, auricle distances and days before flowering were used to determine pollen developmental stages. This allowed the collection of syn...
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2. p-Coumaroyl-CoA, caffeoyl-CoA and feruloyl-CoA were found to be efficient substrates of the synthase. The products formed were naringenin (5,7,4'-trihydroxyflavanone), eriodictyol (5,7,3',4'-tetrahydroxyflavanone) and homoeriodictyol (5,7,4'-trihydroxy-3'-methoxyflavanone), re spectively. Addition of thiol reagents at concentrations exceeding 10~ 3 m caused inhibition of the enzyme. “Releas...
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15 صفحه اولAwakening heterochromatin
Awakening heterochromatin ites in the human genome once thought to be inert structural material are brought to life in response to stress, according to results from Jolly et al. (page 25). These inactive DNA stretches are binding sites for HSF1, a transcription factor that activates individual heat shock genes and accumulates in nuclear granules after heat shock. These granules were, like HSF1,...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 1975
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.40.45