Zoospore Germination in Blastocladiella emersonii: Cell Differentiation without Protein Synthesis?
نویسندگان
چکیده
منابع مشابه
Zoospore germination in Blastocladiella emersonii. IV. Ion control over cell differentiation.
Zoospore germination in B. emersonii is accompanied by a series of abrupt, dramatic changes in cell structure. Membranes appear to be variously involved in many of these changes. Germination is subject to simple manipulations of the ionic environment: swimming zoospores can be maintained for long periods in the buffered CaCl2 solution into which they are initially released, whereas dilution int...
متن کاملZoospore germination in Blastocladiella emersonii. 3. Structural changes in relation to protein and RNA synthesis.
1. Zoospores germinate rapidly and semi-synchronously upon exposure to growth medium or an inorganic salts solution. Amino acid incorporation into protein is detected only after a characteristic lag period, the extent of which is a function of developmental, rather than absolute, time. 2. The ' turn-on' of amino acid incorporation occurs after several of the morphological events of germination ...
متن کاملChanges in the pattern of protein synthesis during zoospore germination in Blastocladiella emersonii.
Using two-dimensional gel electrophoresis, we analyzed the pattern of proteins synthesized during Blastocladiella emersonii zoospore germination in an inorganic solution, in both the presence and absence of actinomycin D. During the transition from zoospore to round cells (the first 25 min), essentially no qualitative differences were noticeable, indicating that the earliest stages of germinati...
متن کاملUltrastructural changes during sporangium formation and zoospore differentiation in Blastocladiella Emersonii.
Samples from synchronized cultures of Rlastorlacliella e m e ~ s o n i i were examined by electron microscopy from t,he late log phase to the completioli of zoospore differentiation, Log-phase plants contain t,he usual cytoplasmic organelles but also have an unusual system of large tubules ca. 45 mp diam that ramify in organized bundles throughout the protoplast,. After induction, zoosporangium...
متن کاملIonic control of germination of Blastocladiella emersonii zoospores.
Encystment and germination of Blastocladiella emersonii zoospores involve a rapid and radical transformation of the motile but nongrowing spore into a sessile, growing germling. Certain inorganic ions, notably 50 mM KCl, are efficient inducers of germination. By use of the carbocyanine dye DiO-C6-(3), we found that KCl depolarizes the plasma membrane of zoospores and noted good correlation betw...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1971
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.68.2.459