Details for A promoter-swap strategy between the AtALMT and AtMATE genes increased Arabidopsis aluminium resistance and improved carbon-use efficiency for aluminium resistance

Liu J, Luo X, Shaff J, Liang C, Jia X, Li Z, Magalhães J and Kochian LV (2012). A promoter-swap strategy between the AtALMT and AtMATE genes increased Arabidopsis aluminium resistance and improved carbon-use efficiency for aluminium resistance. The Plant Journal 71(2):327–337. (DOI: 10.1111/j.1365-313X.2012.04994.x).

The primary mechanism of Arabidopsis aluminum (Al) resistance is based on root Al exclusion, resulting from Al-activated root exudation of the Al3+-chelating organic acids, malate and citrate. Root malate exudation is the major contributor to Arabidopsis Al resistance, and is conferred by expression of AtALMT1, which encodes the root malate transporter. Root citrate exudation plays a smaller but still significant role in Arabidopsis Al resistance, and is conferred by expression of AtMATE, which encodes the root citrate transporter. In this study, we demonstrate that levels of Al-activated root organic acid exudation are closely correlated with expression of the organic acid transporter genes AtALMT1 and AtMATE.

 Full article (561.83 kB)