A multidrug and toxic compound extrusion (MATE) transporter modulates auxin levels in root to regulate root development and promotes aluminium tolerance

• DOI: 10.1111/pce.13658
• Publication Date: 2019-11-02T00:38:47Z
• Authors: Neha Upadhyay; Debojyoti Kar; Sourav Datta
• Keywords: Root (linguistics)

MATE (multidrug and toxic compound extrusion) transporters play multiple roles in plants including detoxification, secondary metabolite transport, aluminium (Al) tolerance, disease resistance. Here we identify characterize the role of Arabidopsis transporter DETOXIFICATION30. AtDTX30 regulates auxin homeostasis roots to modulate root development Al-tolerance. DTX30 is primarily expressed localizes plasma membrane epidermal cells hairs. dtx30 mutants exhibit reduced elongation primary root, hairs, lateral roots. The mutant seedlings accumulate more their tips indicating maintaining root. Al induces expression promotes its localization distal transition zone. but are hyposensitive Al-mediated rhizotoxicity perhaps due saturation growth inhibition. Increase ethylene biosynthesis genes presence absent dtx30. exude less citrate under conditions, which might be misregulation AtSTOP1 AtMATE. In conclusion, modulates levels regulate indirectly exudation promote tolerance.