High-voltage electrostatic fields (HVEFs) can increase the nitrogen uptake of plants. An ammonium cation inhibitor, tetraethylammonium chloride, and a nitrate ion inhibitor, 5-nitro-2-(3-phenylpropylamino)benzoate, were added to ammonium and nitrate growing solutions with and without exposure to HVEFs to investigate the effects of these fields on tomato seedlings. The seedlings were exposed to HVEFs with field intensities of 2.25 and 2.5 kV cm(-1), respectively, for 8 h and the dynamic absorption of nitrogen ions was comparatively analyzed. The seedlings exposed to HVEFs were planted in a greenhouse, the diameter and length of their stems were measured after a 20-d growth period, and their fruit yield was recorded after harvest. Results demonstrated that HVEFs with field intensities of 2.25 and 2.5 kV cm(-1) could respectively improve the dynamic absorption of NH4+ and NO3- by the hydroponically grown tomato seedlings. Many channel proteins were also activated by HVEFs as nitrogen uptake increased. HVEF treatment in the seedling stage is a potential mechanism to enhance nitrogen uptake, cultivate shorter and stockier seedlings, and increase yield.

Publication name	CANADIAN JOURNAL OF PLANT SCIENCE, 98 (1):93-106; 10.1139/cjps-2015-0105 FEB 2018
Author(s)	Li, Meiqing; Wu, Yanyou; Zhang, Mingming; Zhu, Jianyun
Corresponding author(s)	LI Meiqing   lmqljy@163.com    Jiangsu Univ, Inst Agr Equipment Engn, Key Lab Modern Agr Equipment & Technol, Minist Educ Peoples Republ China, Zhenjiang 212013, Peoples R China.
Author(s) from IGCAS	WU Yanyou

View here for the details