Involvement of ASR genes in aluminium tolerance mechanisms in rice (pages 52–67)
RAFAEL AUGUSTO ARENHART, JULIO CÉSAR DE LIMA, MARCELO PEDRON, FABRICIO E. L. CARVALHO, JOAQUIM ALBENISIO GOMES DA SILVEIRA, SILVIA BARCELOS ROSA, ANDREIA CAVERZAN, CLAUDIA M. B. ANDRADE, MARIANA SCHÜNEMANN, ROGÉRIO MARGIS and MÁRCIA MARGIS-PINHEIRO
Article first published online: 4 JUL 2012 | DOI: 10.1111/j.1365-3040.2012.02553.x
A number of studies have demonstrated that rice plants achieve aluminum (Al) tolerance through a novel mechanism that can be independent of root tip Al exclusion. Here we analyzed changes in gene expression of the rice ASR (Abscisic acid, stress and ripening) gene family in response to Al treatment. Transgenic knockdown plants for ASR genes presented increased Al susceptibility. Our results suggest that the ASR5 protein acts as a transcription factor regulating the expression of genes that collectively protect rice cells from aluminum-induced stress responses.