F. Shaki, Hasan Ebrahimzadeh Maboud, V. Niknam
2019
Citations
0
Influential Citations
2
Citations
Journal
Agronomy Journal
Abstract
It has been shown that penconazole (PEN) acts as an endogenous signal molecule responsible for inducing stress tolerance in plants. The effect of PEN (15 mg L–¹) and sodium chloride (0, 100, and 200 mM NaCl) on some biochemical and molecular responses of safflower (Carthamus tinctorius L.) were studied. Results revealed that K⁺ and Ca²⁺ contents, and some growth parameters decreased under salinity however, Na⁺ content, compatible solutes, H₂O₂ and malondialdehyde (MDA) levels, phenolic compounds, phenylalanine ammonia-lyase (PAL) gene expression, and antioxidant enzyme activities increased. The exogenous PEN had a positive effect on K⁺ and Ca²⁺ contents, growth parameters, compatible solutes, antioxidant enzyme activities, and H₂O₂ content, but decreased Na⁺ and MDA contents. In addition, quantitative real-time (qRT)-polymerase chain reaction (PCR) analysis showed that exogenous PEN induced expression of PAL gene in both untreated and salt-treated plants. Our data indicate that PEN helps safflower plants to better cope with salt stress. The results provide new insights to mechanisms that help regulate salinity resistance in safflower. Penconazole may be considered as a foliar application to ameliorate salinity effects, due to its low price and availability.