Effects fo Zinc Chemistry on Phytoextraction in Thlaspi caerulescens - Vermiculite System
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概要
- 論文の詳細を見る
Zinc phytoextration capability of the hyperaccumulator is usually limited by zinc content in the soil. To investigate the effects of different zinc fractions (water-soluble, exchangeble, and non-exchangeble) on phytoextration of Thlaspi caerulescens from medium of vermculite, pot experiments were performed for various zinc application treatments (0～2000 mg kg[-1]). Relationships between zinc quantity accumulated in the plants and zinc content in the medium were investigated. Zinc content accumulated in the shoot of T. caerulescens increased and approached a constant value with zinc content in vermiculite. The analysis of zinc balance in vermiculite before and after the growth of T. caerulescens revealed that more than 40% of the zinc content accumulated by T. caerulescens in contributed by exchangeble zinc and that a high linear correlation exists between the zinc content in shoot of T. caerulescens and the initial exchangeble zinc in vermiculite. Moreover, 17.73-32.94% of the total zinc uptake by T. caerulescens was from non-exchangeble fraction. Thus, it was suggested that exchangeble zinc predominantly influenced the zinc uptake by plants and that T. caerulescens could contribute to the mobilization of non-labile zinc fraction in vermiculite.
- 九州大学の論文
著者
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Qian Xu
Graduate School Of Bioresource And Bioenvironmental Science Kyushu Unviersity
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Chikushi Jiro
Biotron Institute Kyushu University
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Eguchi Toshihiko
Biotron Institute Kyushu University
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Yoshida Satoshi
Biotron Institute Kyushu University
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Yoshida Satoshi
Biotron Institute Kvushu University
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Eguchi Toshihiko
Biotron Application Center Kyushu University
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Yoshida Satoshi
Biotron Institute, Kyushu University
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YOSHIDA Satoshi
Biotron Application Center, Kyushu University
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