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首页> 外文期刊>Chinese science bulletin >Subcellular distribution and compartmentalization of arsenic in Pteris vittata L.
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Subcellular distribution and compartmentalization of arsenic in Pteris vittata L.

机译：凤尾蕨中砷的亚细胞分布和区室化

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摘要

The subcellular distribution of arsenic (As) in Pteris vittata L., an As-hyperaccumulator, was studied to determine As compartmentalization and to explore the mechanisms that confer As tolerance. When the plant was grown in a nutrient solution without additional As, most of the accumulated As was isolated to the cell wall. However, in plants growing in a nutrient solution containing 0.1 or 0.2 mmol/L As, approximately 78% of the total As accumulated within the pinna. The proportions of As accumulation in the cyto-plasmic supernatant fraction were 78% of that in the pinna and 61% of that in the plant. In either treatment group (0.1 or 0.2 mmol/L As), the fraction containing the lowest level of As was the organelle fraction. These results suggest that As accumulates in the pinna where it is primarily distributed in the cytoplasmic supernatant fraction. The role of As compartmentalization may be intricately linked with As detoxification in P. vittata L.
机译：研究了砷（Pteris vittata L.）中的砷（As）的亚细胞分布。当植物在无其他As的营养液中生长时，大部分积累的As被分离到细胞壁上。但是，在生长于含有0.1或0.2 mmol / L As的营养液中的植物中，大约有78％的总As积累在耳廓内。胞质上清液中砷的积累比例为品纳中的78％，植物中的61％。在任一治疗组（0.1或0.2 mmol / L As）中，As含量最低的组分是细胞器组分。这些结果表明，As在耳廓中积累，其主要分布在细胞质上清液级分中。 As隔室的作用可能与P. vittata L中的As排毒错综复杂。

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