منابع مشابه
Timing of nuclear division cycle in Neurospora crassa.
The timing of the nuclear division cycle in Neurospora crassa was studied by inhibiting DNA synthesis with hydroxyurea added to exponentially growing cultures at concentrations that do not inhibit cytoplasmic growth. After the addition of hydroxyurea only the nuclei that have passed the S-phase divide, and therefore by counting the increase in the average number of nuclei per hypha, the stage i...
متن کاملSynchronous Mitochondrial Division in Neurospora Crassa Emerson
Samples of mycelium of Neurospora crassa of known age were harvested from agar plates and examined with the electron microscope. The relative volume of the mitochondria was determined for mycelium of different ages. The volume measurements indicated that the mitochondria were dividing synchronously in fronts 6, 13, and 22k• hr behind the growing hyphal tips. The sequence of mitochondrial divisi...
متن کاملSynchronous Mitochondrial Division in Neurospora Crassa
Samples of mycelium of Neurospora crassa of known age were harvested from agar plates and examined with the electron microscope. The relative volume of the mitochondria was determined for mycelium of different ages. The volume measurements indicated that the mitochondria were dividing synchronously in fronts 6, 13, and 22(1/2) hr behind the growing hyphal tips. The sequence of mitochondrial div...
متن کاملControl points in Neurospora crassa nuclear division cycle: different effects of the inhibition of protein accumulation.
The correlation between protein synthesis and the nuclear division cycle in Neurospora crassa hyphae was studied by inhibiting protein accumulation by two different experimental procedures: (1) starvation for lysine in a lysine-requiring mutant (lys-1); and (2) addition of cycloheximide. Lysine starvation in a lys-1 strain of N. crassa quickly blocked the nuclear division cycle and nuclei accum...
متن کاملSome observations on the nucleolus in Spirogyra.
Several species of Spirogyra have been collected and fixed for electron microscopy in either 2 % osmium tetroxide or 5 % glutaraldehyde. Mitotic cells were selected with the light microscope from filaments of Spirogyra embedded in Epon. Evidence is given for an interphase cycle in the nucleolus of Spirogyra. A clear association between nucleolar material and chromosomes occurs at mitosis. The b...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1913
ISSN: 0006-8071
DOI: 10.1086/331169