Quantitative Proteomic Analysis of Shoot in Stress Tolerant Wheat Varieties on Copper Nanoparticle Exposure

Copper nanoparticles have enhanced the germination and wheat development. To explain the effects of copper nanoparticles on shoot of Pakistan-13 and NARC-11, proteomic technique was used. The physiological responses such as weights/lengths of seedling, shoot, and root of wheat varieties were increased on 10-ppm copper nanoparticle exposure. The number of proteins related to protein metabolism was increased in Pakistan-13 while protein metabolism and photosynthesis-related proteins were increased in NARC-11, treated with copper nanoparticles compared to untreated plants. Abundance of proteins related to glycolysis and tricarboxylic acid cycle was increased on copper nanoparticle exposure in Pakistan-13 and NARC-11. However, the abundance of proteins related to photosynthesis and tetrapyrole synthesis was decreased on copper nanoparticle exposure in Pakistan-13 and NARC-11. Chlorophyll content such as chlorophyll a, chlorophyll b, and total chlorophyll was decreased on copper nanoparticle exposure in Pakistan-13 and NARC-11. The rate of photosynthesis and carbon assimilation decreased on copper nanoparticle exposure. These results suggest that copper nanoparticles mend the seedling growth of wheat, which might be concomitant with the enhancement of protein abundance related to glycolysis and tricarboxylic acid cycle in wheat varieties.