满江红腺毛细胞的超微结构
THE ULTRASTRUCTURE OF HAIR CELLS IN AZOLLA
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摘要: 用透射和扫描电镜观察了蕨状满江红茎尖、成熟叶腔内以及胚的腺毛超微结构。在满江红不同发育期形成的腺毛细胞均有传递细胞的某些特征。茎尖和胚的腺毛还具有分泌细胞的结构特征。其胞质中有丰富的线粒体、高尔基体、粗糙型内质网、液泡和分泌性颗粒。据此推测此类腺毛可能向共生的鱼腥藻营养细胞或厚垣孢子提供营养物质。成熟叶腔中的单支腺毛可能在蕨藻物质交换中起重要作用。腺毛顶细胞和基细胞结构上的差异可能意味着两者的功能有所不同。Abstract: The ultrastructure of Azolla filiculoides was investigated by means of transmission and scanning electron microscopy .Hairs, epidermal tricho-mes, were found on the shoot tip, the mature leaf cavity and the embryo.The hair cells,during various developing stages,had some of the features transfer cells had.And the hair cells on the shoot tip and the embryo had the structural features secretory cells had. In their cytoplasm, there were abundant mitochodria, dictyosomes, rough endoplasmic reti-culum,vacuoles and secretory granules.From this it is inferred that such hair cells might be involved in supplying the nutrient substances to the non N-fixing vegtative cells and the akinets of Anabacna; that the hair cells in the mature leaf cavity might play an important role in metabolic exchange between Azolla and Anabaena; and that the difference in structure between the terminal and the basal cells might involve their difference in function.
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[11] Ladha, J,K, and I,Watanabe,1984, Antigenic analysis of tlriabaena aollae and presence of lectin in Azolla-Anabaena association,in Advances in nitrogen frxation research,eds Veeger,C,and W,E,Newton, Nijhof/Junk.pp,420.
[12] Tel-or, E.,Sandovsky, T,,Raveed, D,and N,J,Levine,1984, The unique properties of the symbiotie,Anabaena azollae in the water fern Azolla, metabolism and intercellar recognition,in Advances in uitrogPn fixation, eds,Veeger, C, and W.E,Newton, Nijhof/Junk.PP.461~465.
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