Potassium

Identification of low potassium stress-responsive proteins in tobacco (Nicotiana tabacum) seedling roots using an iTRAQ-based analysis

X. L. Ren, Li, L. Q., Xu, L., Guo, Y. S., Lu, L. M., Ren, X. L., Li, L. Q., Xu, L., Guo, Y. S., and Lu, L. M., Identification of low potassium stress-responsive proteins in tobacco (Nicotiana tabacum) seedling roots using an iTRAQ-based analysis, vol. 15, p. -, 2016.

Potassium is one of the three main mineral nutrients, and is vital for leaf growth and the quality of tobacco (Nicotiana tabacum) plants. In recent years, the isobaric tags for relative and absolute quantitation (iTRAQ) method has been one of the most popular techniques for quantitative proteomic analysis. In this study, we used iTRAQ to compare protein abundances in the roots of control and low potassium-treated tobacco seedlings, and found that 108 proteins were differentially expressed between the two treatments.

Potassium contributes to zinc stress tolerance in peach (Prunus persica) seedlings by enhancing photosynthesis and the antioxidant defense system

Z. Z. Song, Duan, C. L., Guo, S. L., Yang, Y., Feng, Y. F., Ma, R. J., and Yu, M. L., Potassium contributes to zinc stress tolerance in peach (Prunus persica) seedlings by enhancing photosynthesis and the antioxidant defense system, vol. 14, pp. 8338-8351, 2015.

Zinc (Zn) is considered to be a major industrial pollutant because excessive amounts can impair plant growth. In this paper, we found that peach ‘Yoshihime’ seedlings are promising Zn tolerant plants. However, heavy Zn toxicity (2 mM) damaged plant performance by disrupting biochemical processes, including photosynthesis, proline production, and K+ nutrition. Notably, elevated external K+ supply (10 mM) alleviated peach seedlings from Zn toxicity, evidenced by enhanced photosynthesis, antioxidant defense systems, and plant K+ nutritional status.

Subscribe to Potassium