Genetic control of cellular differentiation in Ulva mutabilis II. Induced chimeras
نویسندگان
چکیده
منابع مشابه
Bacteria-induced morphogenesis of Ulva intestinalis and Ulva mutabilis (Chlorophyta): a contribution to the lottery theory
The green marine macroalgae of the class Ulvophyceae (Ulvophytes) are common algae distributed worldwide particularly in intertidal areas, which play a key role in aquatic ecosystems. They are potentially valuable resources for food, animal feed and fuel but can also cause massive nuisance blooms. Members of Ulvaceae, like many other seaweeds, harbour a rich diversity of epiphytic bacteria with...
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The present work deals with the ultrastructure of the meiotic processes leading to the formation of zoospores. The formation of an exit pore on the outer surface of the sporangium is the first visible sign that the cell will undergo meiosis and not just a somatic division. Prophase I nuclei differ from nuclei in mitotic prophase by having one or several invaginations of the nuclear membrane. El...
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Green Ulvophyte macroalgae represent attractive model systems for understanding growth, development, and evolution. They are untapped resources for food, fuel, and high-value compounds, but can also form nuisance blooms. To fully analyze green seaweed morphogenesis, controlled laboratory-based culture of these organisms is required. To date, only a single Ulvophyte species, Ulva mutabilis Føyn,...
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In mice, thymectomized as young adults, neonatally induced tolerance persists in the putative absence of cell chimerism. The finding provides evidence that a selective deficiency of specific clones of lymphocytes exists in transplantation tolerance when induced under the conditions of these experiments.
متن کاملUltrastructural localization of phosphohydrolases in gametes, zygotes and zoospores of Ulva mutabilis Foyn.
Gametes, zoospores, and zygotes of the multicellular, green alga Ulva mutabilis showed acid phosphatase reaction product in Golgi vesicles and on the membrane lining the vacuole. In addition gametes and zoospores showed enzyme reaction product on the entire surface membrane including the flagellar membrane. The surface membrane enzyme activity disappears from the zygote shortly after copulation...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2009
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1971.tb02418.x