Auxin-sensitive Aux/IAA proteins mediate drought tolerance in Arabidopsis by regulating glucosinolate levels

Abstract

Brassicaceae produce glucosinolates to protect against herbivory and pathogens. Here the authors show that auxin-sensitive Aux/IAA repressor proteins regulate aliphatic glucosinolate levels in Arabidopsis and this promotes stomatal closure via reactive oxygen species during drought stress.