Relationship between the distribution of Cd and Zn in root tissue and the heavy metal tolerance of mulberry and Athyrium yokoscense
Relationship between the distribution of Cd and Zn in root tissue and the heavy metal tolerance of mulberry and Athyrium yokoscense
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桑、横香根组织中Cd、Zn的分布与重金属耐受性的关系
DOI：
10.11416/kontyushigen1930.65.286
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
X. Xian
中科院分区：
文献类型：
--
作者：
X. Xian
在Cd和Zn混合水培养条件下，将桑树和横叶松根分成4个亚细胞部分：F1（细胞壁）、F2（细胞核）、F3（线粒体和质体）和F4（一些微小的细胞器和可溶性物质）。研究了这些馏分中Cd和Zn的分布。在桑树根细胞中，F4中Cd和Zn的分布分别在30%和40%以上，FI中Cd和Zn的分布在40%左右。另一方面，横叶草根细胞的FI似乎是一个出色的重金属蓄积器，其Cd和Zn含量超过80%。在该植物中，F4中的这些金属含量低至10%以下。阳阳杉对Cd和Zn的耐受性分别比桑树高100倍和10倍，这至少可以部分解释为阳阳杉根细胞壁具有较高的金属积累能力。猫环境科学实验室，茨城市，302-01。
The roots of mulberry and Athyrium yokoscense grown in water culture, which was mixed with Cd and Zn, were separated into 4 subcellular fractions: F1 (cell wall), F2 (cell nuclei), F3 (mitochondria and plastids) and F4 (some tiny organelles and soluble materials). These fractions were investigated for the Cd and Zn distributions. In the case of mulberry root cells, the Cd and Zn distributed in F4 were more than 30 and 40%, respectively, and in FI about 40%. On the other hand, FI of A. yokoscense root cells seemed to be an outstanding heavy metal accumulator, possessing Cd and Zn more than 80%. In this plant, these metals in F4 were as low as less than 10%. The tolerance of A. yokoscense for Cd and Zn was 100 times and 10 times higher, respectively, than mulberry, and this may be interpreted at least partly by the high metal-accumulation capacity of the root cell wall of this plant. Cats Environmental Science Laboratories, Ibaraki, 302-01.