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Distribution and mobility of aluminium in an Al-accumulating plant, Fagopyrum esculentum Moench.
J Exp Bot. 2001 Aug; 52(361):1683-7.JE

Abstract

Buckwheat (Fagopyrum esculentum Moench. cv. Jianxi) accumulates high concentrations of Al in the leaves without showing any toxicity. To understand the accumulation mechanism of Al in buckwheat, the distribution and mobility of Al in buckwheat were investigated. Relatively long-term treatment (28 d) with Al led to a decrease in Al concentration from old to young leaves, while a short-term (1 d) exposure to Al resulted in a uniform distribution of Al in the leaves. When the fourth leaf was wrapped inside a transparent plastic bag to suppress transpiration, the Al concentration of this leaf was only one-quarter of that in the corresponding leaf without wrapping. Within a leaf, the Al concentration at the margins was much higher than that in the centre. These results indicate that Al distribution in the leaves is controlled by both rate and duration of transpiration. The mobility of Al between old and new leaves was studied by first growing plants in a solution with Al, followed by culture in a solution without Al. The Al content in the two new leaves appeared after removal of external Al was very low, whereas that in the old leaves did not decrease but continued to increase. The increased Al content was found to be translocated from Al remaining in the roots. It is concluded that Al is not mobile once it is accumulated in the leaf.

Authors+Show Affiliations

Faculty of Agriculture, Kagawa University, Miki-cho, Kita-gun, Kagawa 761-0795, Japan.No affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

11479333

Citation

Shen, R, and J F. Ma. "Distribution and Mobility of Aluminium in an Al-accumulating Plant, Fagopyrum Esculentum Moench." Journal of Experimental Botany, vol. 52, no. 361, 2001, pp. 1683-7.
Shen R, Ma JF. Distribution and mobility of aluminium in an Al-accumulating plant, Fagopyrum esculentum Moench. J Exp Bot. 2001;52(361):1683-7.
Shen, R., & Ma, J. F. (2001). Distribution and mobility of aluminium in an Al-accumulating plant, Fagopyrum esculentum Moench. Journal of Experimental Botany, 52(361), 1683-7.
Shen R, Ma JF. Distribution and Mobility of Aluminium in an Al-accumulating Plant, Fagopyrum Esculentum Moench. J Exp Bot. 2001;52(361):1683-7. PubMed PMID: 11479333.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Distribution and mobility of aluminium in an Al-accumulating plant, Fagopyrum esculentum Moench. AU - Shen,R, AU - Ma,J F, PY - 2001/8/2/pubmed PY - 2001/10/5/medline PY - 2001/8/2/entrez SP - 1683 EP - 7 JF - Journal of experimental botany JO - J Exp Bot VL - 52 IS - 361 N2 - Buckwheat (Fagopyrum esculentum Moench. cv. Jianxi) accumulates high concentrations of Al in the leaves without showing any toxicity. To understand the accumulation mechanism of Al in buckwheat, the distribution and mobility of Al in buckwheat were investigated. Relatively long-term treatment (28 d) with Al led to a decrease in Al concentration from old to young leaves, while a short-term (1 d) exposure to Al resulted in a uniform distribution of Al in the leaves. When the fourth leaf was wrapped inside a transparent plastic bag to suppress transpiration, the Al concentration of this leaf was only one-quarter of that in the corresponding leaf without wrapping. Within a leaf, the Al concentration at the margins was much higher than that in the centre. These results indicate that Al distribution in the leaves is controlled by both rate and duration of transpiration. The mobility of Al between old and new leaves was studied by first growing plants in a solution with Al, followed by culture in a solution without Al. The Al content in the two new leaves appeared after removal of external Al was very low, whereas that in the old leaves did not decrease but continued to increase. The increased Al content was found to be translocated from Al remaining in the roots. It is concluded that Al is not mobile once it is accumulated in the leaf. SN - 0022-0957 UR - https://www.unboundmedicine.com/medline/citation/11479333/Distribution_and_mobility_of_aluminium_in_an_Al_accumulating_plant_Fagopyrum_esculentum_Moench_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=11479333.ui DB - PRIME DP - Unbound Medicine ER -