Abstract
Zinc phytoextraction capability of the hyperaccumulator is usually limited by zinc content in the soil. To investigate the effects of different zinc fractions (water-soluble, exchangeable, and non-exchangeable) on phytoextraction of Thlaspi caerulescens from medium of vermiculite, 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 is contributed by exchangeable zinc and that a high linear correlation exists between the zinc content in shoot of T. caerulescens and the initial exchangeable zinc in vermiculite. Moreover, 17.73-32.94% of the total zinc uptake by T. careulescens was from non-exchangeable fraction. Thus, it was suggested that exchangeable zinc predominantly influenced the zinc uptake by plants and that T. caerulescens could contribute to the mobilization of non-labile zinc fraction in vermiculite.
| Original language | English |
|---|---|
| Pages (from-to) | 459-469 |
| Number of pages | 11 |
| Journal | Journal of the Faculty of Agriculture, Kyushu University |
| Volume | 50 |
| Issue number | 2 |
| Publication status | Published - Oct 2005 |
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All Science Journal Classification (ASJC) codes
- Agricultural and Biological Sciences (miscellaneous)
Cite this
Effects of zinc chemistry on phytoextraction in Thlaspi caerulescens-vermiculite system. / Qian, Xu Dong; Eguchi, Toshihiko; Yoshida, Satoshi; Chikushi, Jiro.
In: Journal of the Faculty of Agriculture, Kyushu University, Vol. 50, No. 2, 10.2005, p. 459-469.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of zinc chemistry on phytoextraction in Thlaspi caerulescens-vermiculite system
AU - Qian, Xu Dong
AU - Eguchi, Toshihiko
AU - Yoshida, Satoshi
AU - Chikushi, Jiro
PY - 2005/10
Y1 - 2005/10
N2 - Zinc phytoextraction capability of the hyperaccumulator is usually limited by zinc content in the soil. To investigate the effects of different zinc fractions (water-soluble, exchangeable, and non-exchangeable) on phytoextraction of Thlaspi caerulescens from medium of vermiculite, 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 is contributed by exchangeable zinc and that a high linear correlation exists between the zinc content in shoot of T. caerulescens and the initial exchangeable zinc in vermiculite. Moreover, 17.73-32.94% of the total zinc uptake by T. careulescens was from non-exchangeable fraction. Thus, it was suggested that exchangeable zinc predominantly influenced the zinc uptake by plants and that T. caerulescens could contribute to the mobilization of non-labile zinc fraction in vermiculite.
AB - Zinc phytoextraction capability of the hyperaccumulator is usually limited by zinc content in the soil. To investigate the effects of different zinc fractions (water-soluble, exchangeable, and non-exchangeable) on phytoextraction of Thlaspi caerulescens from medium of vermiculite, 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 is contributed by exchangeable zinc and that a high linear correlation exists between the zinc content in shoot of T. caerulescens and the initial exchangeable zinc in vermiculite. Moreover, 17.73-32.94% of the total zinc uptake by T. careulescens was from non-exchangeable fraction. Thus, it was suggested that exchangeable zinc predominantly influenced the zinc uptake by plants and that T. caerulescens could contribute to the mobilization of non-labile zinc fraction in vermiculite.
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M3 - Article
VL - 50
SP - 459
EP - 469
JO - Journal of the Faculty of Agriculture, Kyushu University
JF - Journal of the Faculty of Agriculture, Kyushu University
SN - 0023-6152
IS - 2
ER -