Relationship between metal and pigment concentrations in the Fe-hyperaccumulator moss Scopelophila ligulata
Relationship between metal and pigment concentrations in the Fe-hyperaccumulator moss Scopelophila ligulata
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DOI：
10.1007/s10265-016-0867-3
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发表时间：
2016
影响因子：
2.8
通讯作者：
H. Nakajima;K. Itoh
中科院分区：
文献类型：
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作者：
H. Nakajima;K. Itoh
Scopelophila ligulatais是一种铁超富集植物，但其富集机制和铁对色素的影响尚不清楚。为了澄清这些影响，我们测量了它的金属和色素浓度。结果表明，该藓类植物体内铁含量是正常藓类植物的10-61倍，是铁超富集植物。S.结果表明，铁的含量以紫花苜蓿最高（2.9wt%），其次为紫花苜蓿，铁的含量依次降低（2.2wt%），这说明紫花苜蓿的颜色和过量的铁分布在植物体内。此外，我们观察到，Ca的浓度与色素的浓度呈负相关，相反，K的浓度与色素的浓度呈正相关。Ca和K的浓度呈负相关，这可能是由于在Ca胁迫下，舌音对K的吸收减少所致。这些研究结果提供了一个更好的理解铁超富集植物苔藓中的金属和色素之间的关系。舌形。
Scopelophila ligulatais known to be a Fe-hyperaccumulator moss; however, its mechanism of accumulation and the effects of Fe on pigments remain unclear. To clarify the effects, we measured its metal and pigment concentrations. The Fe concentration inS. ligulatawas 10–61 times higher than that in normal mosses, confirming that the moss is a Fe-hyperaccumulator. The black samples ofS. ligulatahad the highest Fe concentration (2.9 wt%) and the second in the order of decreasing Fe concentration (2.2 wt%), which explains their color and indicates that the excess amount of Fe is distributed through the plant body. Moreover, we observed that the concentration of Ca is negatively correlated with the concentrations of pigments and, conversely, that the concentration of K is positively correlated with the concentrations of pigments. This inverse relationship between Ca and K can be explained by the reduced uptake of K inS. ligulatain response to Ca stress, which is supported by the fact that the concentration of Ca is negatively correlated with that of K. These findings provide a better understanding of the relationships between metals and pigments in the Fe-hyperaccumulator mossS. ligulata.