Regulation of root hair development in Arabidopsis thaliana (L.) Heynh. by magnesium is involved in calcium and reactive oxygen species

ABSTRACT: Physiological mechanisms involved in root hair development in response to magnesium (Mg) availability are unclear. This study investigated the influence of Mg availability on root hair development in arabidopsis grown in different Mg concentrations ranging from 0.5 μM to 10 mM. After 7-d treatment, root hair development was enhanced in roots exposed to low Mg but was inhibited severely in roots grown in high Mg. Low Mg (0.5 µM) enhanced many genes like LRX1, COW1, EXP7 and ROP2 that control root hair development. Low Mg supply also increased concentrations of total Ca2+ and ROS in roots, but application of either BAPTA or DPI to low Mg treatment blocked the enhanced development of root hairs. The opposite was true when the plants under high Mg (3 mM) were supplied with Ca2+ or PMS. Beside

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Gulei Jin 

PROVIDER: E-GEOD-42899 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress