Summary
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(1)
Blister formation occurs when eggs ofCoccophora Langsdorfii, Fucus evanescens, andSargassum confusum are immersed in zinc chloride solution at a density higher than 25 per cent.
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(2)
When the egg is stained vitally with brilliant green, neutral red, or with toluidin blue, then immersed in zinc chloride, coloured blisters appear, and their colour is the same as that of the stained egg.
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(3)
A giant oily blister appears at the centripetal end where the oil drops were stratified but normal blisters appear in the other region, when the centrifuged eggs are immersed in zinc chloride.
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(4)
Normally, the blister, seems to be the extrusion of the hyaline plasm through small holes of the plasma membrane made by zinc chloride.
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Literature
Nakazawa, S., 1953: Vital staining of the plasm in the eggs ofCoccophora andSargassum. Sci. Rep. TÔhoku Univ., 4th Ser.20, 89–92.
—, 1957: Developmental mechanics of Fucaceous algae VI. A unified theory of the polarity determination inCoccophora, Fucus, andSargassum eggs. Sci. Rep. TÔhoku Univ., 4th Ser.23, 119–130.
—, 1958: Do VIII. Blister formation in some fucoid eggs. Bot. Mag. (Tokyo)71, 23–25.
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Aided by a grant from the Saito Gratitude Foundation, Sendai.
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Nakazawa, S. Developmental mechanics of fucaceous algae XII. Further studies on the blister formation in fucoid eggs. Protoplasma 51, 123–126 (1959). https://doi.org/10.1007/BF01893248
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DOI: https://doi.org/10.1007/BF01893248