DECIPHERING AUXIN-REGULATED MECHANISMS DURING PLANT ACCLIMATION TO SALINITY

IGLESIAS, M. J.; TERRILE, M. C.; CASALONGUE, C.

Potrero de los Funes, San Luis

Congreso; XLVII Reunión Anual SAIB; 2011

SAIB

The phytohormone auxin regulates gene expression through direct physical interaction with TIR1/AFB receptor proteins, which in turn remove the Aux/IAA family of transcriptional repressors. We have previously demonstrated that the double mutant, tir1 afb2 displays increased tolerance against salinity. Thus, we hypothesized that down-regulation of auxin signaling could be part of acclimation to salinity in Arabidopsis thaliana plants. In this work, we demonstrated that NaCl-mediated salt stress inhibited GUS expression in a dose response manner in the Arabidopsis auxinsignaling...