Differences in the Apparent Permeability of Spore Walls and Prothallial Cell Walls in Onoclea sensibilis
نویسندگان
چکیده
منابع مشابه
Biochemistry of Fern Spore Germination: GLYOXYLATE AND GLYCOLATE CYCLE ACTIVITY IN ONOCLEA SENSIBILIS L.
In chlorophyll-containing spores of Onoclea sensibilis, depletion of lipid reserves during germination is correlated with increases in the activity of the glyoxylate cycle enzymes isocitrate lyase and malate synthase. In Onoclea, the heterotrophic activity associated with lipid catabolism occurs at the same time that autotrophic activity is taking place. Increases in chlorophyll content and in ...
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15 صفحه اولOn Antheridial Metabolism in the Fern Species Onoclea sensibilis L.
Dopp (1) demonstrated that the extract from mature prothalli of the fern species Ptcridiwtn1 aquiilinunil (L.) Kuhln hastened the onset of antheridium formation in young prothalli of this species by several days and in the prothalli of Dryopteris filixwwlas (L). Schott by several weeks. Dopp's conclusion that the prothalli of P. aquilinit elaborate a specific antheridium-inducing factor was con...
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از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...
15 صفحه اولReversal by Light of Ethylene-induced Inhibition of Spore Germination in the Sensitive Fern Onoclea sensibilis: An Action Spectrum.
Spores of the fern Onoclea sensibilis L. normally germinate to produce two cells of unequal size. The larger cell divides to produce the familiar heart-shaped prothallus. The smaller cell elongates and differentiates into the rhizoid but normally does not divide again. Onoclea spores germinate in complete darkness. Dark germination can be completely inhibited by ethylene gas (10 microliters per...
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ژورنال
عنوان ژورنال: American Fern Journal
سال: 1980
ISSN: 0002-8444
DOI: 10.2307/1546753