An exclusion mechanism is epistatic to an internal detoxification mechanism in aluminum resistance in Arabidopsis.

ABSTRACT: BACKGROUND:In Arabidopsis, the aluminum (Al) exclusion mechanism is mainly facilitated by ALMT1-mediated malate exudation and MATE-mediated citrate releases from the root. Recently, we have demonstrated that coordinated functioning between an ALMT1-mediated Al exclusion mechanism, via exudation of malate from the root tip, and a NIP1;2-facilitated internal detoxification mechanism, via removal of Al from the root cell wall and subsequent root-to-shoot Al translocation, plays critical roles in achieving overall Al resistance. However, the genetic relationship between ALMT1 and NIP1;2 in these processes remained unclear. RESULTS:Through genetic and physiological analyses, we demonstrate that unlike ALMT1 and MATE, which function independently and additively, ALMT1 and NIP1;2 show an epistati

SUBMITTER: Wang Y 

PROVIDER: S-EPMC7079475 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature