Detoxifying aluminium with buckwheat

Jian Feng Ma (), Shao Jian Zheng, Hideaki Matsumoto and Syuntaro Hiradate
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Jian Feng Ma: Research Institute for Bioresources, Okayama University
Shao Jian Zheng: Research Institute for Bioresources, Okayama University
Hideaki Matsumoto: Research Institute for Bioresources, Okayama University
Syuntaro Hiradate: National Institute of Agroenvironmental Sciences, Tsukuba Norin Danchi

Nature, 1997, vol. 390, issue 6660, 569-570

Abstract: Abstract Aluminium toxicity is a major problem limiting crop production in acid soils, which account for around 40% of the world's arable land1. Some plants have developed strategies to avoid or tolerate aluminium, including buckwheat (Fagopyrum esculentum Moench cv. Jianxi), which has a high resistance to aluminium, but the mechanism responsible for resistance is not known. We have found that the aluminium-resistant Juanxi cultivar of buckwheat secretes oxalic acid from its roots specifically and quickly in response to aluminium stress. Further, aluminium accumulates in the leaf cells in a non-toxic Al-oxalate complex with a 1:3 ratio of aluminium to oxalic acid.

Date: 1997
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DOI: 10.1038/37518

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