Ethylene-Nitric Oxide Interplay During Selenium-induced Lateral Root Emergence in Arabidopsis

• DOI: 10.1007/s00344-019-09950-9
• Publication Date: 2019-03-28T12:21:56Z
• Authors: Gábor Feigl; Edit Horváth; Árpád Molnár; Dóra Oláh; Péter Poór; Zsuzsanna Kolbert
• Keywords: Plant Physiology; Lateral root

Selenium (Se) results in primary root shortening and the concomitant induction of lateral roots (LRs) (stress-induced morphogenic response, SIMR). Both ethylene (ET) nitric oxide (NO) are gasotransmitters interacting with each other during plant growth regulation; however, their involvement interplay LR have not been examined so far. This study investigates effect Se on ET NO levels interaction wild-type (WT) insensitive etr1-1 Arabidopsis. In WT, at 15 µM concentration triggered emergence (LRem) slight level elevation but Se-induced inhibition was accompanied by four-fold increase which can be associated increased expression ACS2 ACS8. Treatment ACC + decreased LRem whereas AVG plants resulted enhanced indicating that may inhibit both formation Se-stressed The NO-associated genes (NR1, NR2, GSNOR1, GLB1, GLB2), did correlate levels. Application GSNO together outgrowth WT etr1-1, this could reversed a scavenger indicates positive regulatory role emergence. Moreover, has clear inhibitory cPTIO an inducing These data indicate for first time antagonistic between regulates Arabidopsis under stress.