Different effects of calcium and penconazole on primary and secondary metabolites of Brassica napus under drought

Abstract

The effects of penconazole (PEN) and calcium (Ca 2?) on physiological and biochemical parameters were investigated in two canola cultivars (RGS003 and Sarigol) under water stress. Drought increased protein content in RGS003, but PEN, Ca 2? and PEN-Ca 2? treatment induced protein content in Sarigol. PEN, Ca 2? and PEN-Ca 2? treatment enhanced soluble sugar content in RGS003. In contrast to Sarigol, drought and PEN treatment induced total phenol content in RGS003. Flavonoid content increased by drought, but Ca 2? and PEN-Ca 2? treatment decreased it in both cultivars. Ca 2? and PEN-Ca 2? treatment enhanced tocopherol content in both cultivars under drought stress. Drought stress increased Phenylalanine ammonia-lyase (PAL) activity in Sarigol. PEN-Ca 2? treatment increased relative expression of PAL and its activity in RGS003. Fatty acid composition was modified by drought, PEN and Ca 2?. Saturated fatty acid (stearic acid) content declined but unsaturated fatty acid (oleic acid) content enhanced in both cultivars under drought. The application of PEN and Ca 2? decreased unsaturated fatty acids (linoleic and linolenic acid) in RGS003 under drought. According to our results, PEN and Ca 2? changed physiological and biochemical parameters and therefore these compounds are suggested for reduction of the negative effects of drought stress in canola.

Probiotics, Proline and Calcium Induced Protective Responses of Triticum aestivum under Drought Stress

“…Different physiological operations have been exerted to reduce the negative effects of drought stress. For example, some researchers used compounds such as plant growth regulators, amino acids, calcium ions, and other chemicals for the recovery of plant growth under drought stress [ 5 , 6 , 7 ]. Currently, we find data that plant probiotics can significantly improve the growth and yield of winter wheat grown under drought conditions [ 8 , 9 , 10 ].…”