Strigolactone-mediated amelioration of salinity stress in bread wheat: Insights from phytochemical and ion channels related genes expression analyses

• DOI: 10.1016/j.stress.2023.100324
• Publication Date: 2023-12-17T06:33:45Z
• Authors: Shadi Sadat Mehrabi; Manije Sabokdast; Mohammad Reza Bih...; Jahad Soorni; Iman Mirmazloum
• Keywords: APX; Strigolactone

Foliar application of growth regulators seems to alleviate the adverse effects abiotic stresses in plants through different mechanisms such as antioxidative and gene expression regulation. As an important stress, salinity has enormous negative impact on crop bread wheat. In present study, exogenous strigolactone (GR24) was considered for its potential stress-mitigating effect two contrasting wheats cultivars ('Arta' 'Karchia') grown under 2053100 mM NaCl stress (10 dS m−1). Yield-related traits, oxidative (APX, POX, CAT, H2O2, MDA, GB Proline), ionic indices (Na+ K+ content leaf root), a selected set related genes (TaAPX, TaGPX, TaP5CS, TaNHX2, TaSOS1, TaHAK, TaAKT2 TaHKT2;1) were surveyed flowering stage. Strigolactone μM) had significant induction improvement biochemical features reducing electrolyte leakage, H2O2 MDA or increasing grain yield, total protein, proline, antioxidant enzymes POX) activity, salinity-stressed plants. The analysis with real-time PCR showed transcriptional variation response salt GR24. Improved homeostasis Na+ their ratio found be correlated antiporter consequent reduction ion toxicity. findings this study can improve our knowledge about complex mechanism plant hormone during plans mitigation stress.