Global expression pattern comparison betweenlow phosphorus insensitive 4and WT Arabidopsis reveals an important role of reactive oxygen species and jasmonic acid in the root tip response to phosphate starvation

• DOI: 10.4161/psb.6.3.14160
• Publication Date: 2011-06-07T18:28:17Z
• Authors: Alejandra Chacón-...; Enrique Ibarra-La...; Lenin Sánchez-Cal...; Dolores Gutiérrez...; Luis Herrera-Estr...
• Keywords: Jasmonic acid; Lateral root

Plants are exposed to several biotic and abiotic stresses. A common environmental stress that plants have face both in natural agricultural ecosystems impacts its growth development is low phosphate (Pi) availability. There has been an important progress the knowledge of molecular mechanisms by which cope with Pi deficiency. However, mediate alterations architecture Arabidopsis root system responses starvation still largely unknown. One most conspicuous developmental effects on inhibition primary accompanied loss meristematic activity. To identify signalling pathways potentially involved Arabidpsis meristem response Pi-deprivation, here we report global gene expression analysis tip wild type phosphorus insensitive4 (lpi4) mutant grown under limiting conditions. Differential physiological experiments show changes redox status, probably mediated jasmonic acid ethylene, play role exhaustion process triggered Pi-starvation.