Elemental composition of plants from the serpentine soil of Sugashima Island, Japan
Elemental composition of plants from the serpentine soil of Sugashima Island, Japan
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日本菅岛蛇纹土植物的元素组成
DOI：
10.1071/bt14226
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发表时间：
2015
影响因子：
1.1
通讯作者：
Takafumi Mizuno and Yoko Kirihata
中科院分区：
文献类型：
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作者：
高務淳;仲井まどか;Takafumi Mizuno and Yoko Kirihata
Sugashima岛有日本最大的小叶黄杨群落和一些独特的蛇形相关植物区系。我们测定了生长在该地区的75种植物的金属（铁（Fe）、锰（Mn）、锌（Zn）、铜（Cu）、钴（Co）、镍（Ni）、铬（Cr）和锶（Sr））和常量元素(钾（K)、钙（Ca）和镁（Mg））的浓度，并认为这是它们适应高金属环境的关键。土壤呈现出高Ni、Cr、Co、低Ca: Mg商的典型蛇形特征，pH（H2O）在6.2 ~ 8.6之间。其中，小叶黄杨（Buxus microphylla）的Ni含量最高，为400 mg kg-1，紫堇（Viola grypoceras）和獐牙菜（Swertia japonica）的Ni含量均在100 mg kg-1以上。其中，日本獐牙菜积累的Fe、Cr和Co含量最高，三叶松积累的Mn和Zn含量最高。在植物中，特别是在日本钙质土壤地区发现的一些嗜碱植物中，镍和铁的浓度呈显著相关。本研究结果表明，尽管小叶白莲的优势可能与其在不积累高浓度铁的情况下具有较强的耐镍性有关，但积极的铁吸收可能是植物在Sugashima岛蛇形土壤上适应和生存的关键特征之一。
Sugashima Island has the largest community of Buxus microphylla in Japan and a unique flora of several serpentine-associated plants. We determined the concentrations of metals (iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), cobalt (Co), nickel (Ni), chromium (Cr) and strontium (Sr)) and macro elements (potassium (K), calcium (Ca) and magnesium (Mg)) in 75 plants inhabiting this area and considered the key to their adaptation to the high-metal environment. The soil showed typical serpentine characteristics of high Ni, Cr, Co and low Ca : Mg quotient, and the soil pH(H2O) ranged from 6.2 to 8.6. Buxus microphylla had the highest Ni concentration (400 mg kg–1) among the plants collected, and Viola grypoceras and Swertia japonica accumulated over 100 mg kg–1 Ni. Swertia japonica accumulated the highest concentrations of Fe, Cr and Co, and Dendropanax trifidus accumulated the highest concentrations of Mn and Zn. The concentrations of Ni and Fe in the plants, particularly in some alkalophilic plants that are found in areas with calcareous soil in Japan, were significantly correlated. Our results suggested that active Fe uptake could be one of the key characteristics for plant adaptation to and survival on the serpentine soils of Sugashima Island, although the dominance of B. microphylla may be associated with its strong Ni tolerance without accumulating high concentrations of Fe.