| 裸子植物的生化系统学(三)——从种子蛋白多肽和针叶过氧化物酶探讨红豆杉科的系统位置 |
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| 引用本文： | 胡志昂,王洪新,刘长江,潜忠兴.裸子植物的生化系统学(三)——从种子蛋白多肽和针叶过氧化物酶探讨红豆杉科的系统位置[J].中国科学院研究生院学报,1986,24(4):260-263. |
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| 作者姓名： | 胡志昂 王洪新 刘长江 潜忠兴 |
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| 作者单位： | (中国科学院植物研究所，北京) |
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| 摘 要： | SDS聚丙烯酰胺凝胶电泳揭示红豆杉属和白豆杉的种子蛋白主要多肽的分子量为31、
22和20千道尔顿(K)。穗花杉的多肽谱与上述两属相差较大，没有22K多肽，代之以一个33K
主要多肽。榧树属和穗花杉有很多共同的多肽，但没有44K这个红豆杉科多数种类共有的中
等含量的多肽，并出现一个36K主要多肽。三尖杉属一些种的多肽谱十分接近红豆杉属，竹
柏的种子蛋白与上述分类群也有一定程度的近似。
红豆杉科各属之间针叶过氧化物酶谱差别很大，但三尖杉属一些种与红豆杉属却有些类
似。
两种蛋白质资料一致说明红豆杉科内的进化趋势是从红豆杉属、经白豆杉属和穗花杉属
至榧树属。红豆杉属和三尖杉属之间蛋白质的近似，说明红豆杉科和三尖杉科之间的关系，可
能通过红豆杉属相联系的,述资料也说明红豆杉科应置于松柏目之下。
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Biochemical Systematics of Gymnosperms (3)—On the Systematic Position of Tax aceae from Their Seed Protein Peptides and Needle Peroxidases |
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| Hu Zhi-Ang,Wang Hong-Xin,Liu Chang-Jiang,Qian Zhong-Xing.Biochemical Systematics of Gymnosperms (3)—On the Systematic Position of Tax aceae from Their Seed Protein Peptides and Needle Peroxidases[J].Journal of the Graduate School of the Chinese Academy of Sciences,1986,24(4):260-263. |
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| Authors: | Hu Zhi-Ang Wang Hong-Xin Liu Chang-Jiang Qian Zhong-Xing |
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| Institution: | (Institute of Botany, Academia Sinica, Beijing) |
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| Abstract: | The major peptides in the seed of Taxus and Pseudotaxus have molecular
weight about 31, 22 and 20 kilodaltons (Kd) shown by SDS polyacrylamide gel electrop-
horesis. The seed protein peptides of Cephalotaxus is very similar to those of Taxus
and Pseudotaxus except a few bands of high molecular weight. Some considerable dif-
ferences in peptide pattern exist between Amentotaxus and the three genera cited above.
The former has a new major peptide, 33K, but lacks 22 K. The seed of Torreya does
not contain peptide 44 K, although Torreya and Amentotaxus have many bands in com-
mon. To a certain extent, the seed protein peptides of Podocarpus nagi are similar to
those of the above taxa.
A great range of divergency in needle peroxidases among different genera of Ta-
xaceae has been observed by using electrophoresis, while the zymogram of Cephalotaxus
is somewhat similar to that of Taxus.
Two series of protein data demonstrate, that there is an evolutionary tendency from
Taxus to Torreya through Pseudotaxus and Amentotaxus within Taxaceae. And the
Taxaceae is closely related to Cephalotaxus by way of Taxus. The systematic positionof the Taxaceae, therefore, should be placed under the Coniferales. |
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| Keywords: | Taxaceae Seed protein peptides needle peroxidases Systematic position |
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