Excess copper inhibits the growth of rice seedlings by decreasing uptake of nitrate
作者: Kai HuoXiangchao ShangguanYan XiaZhenguo ShenChen Chen
作者单位: 1College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
刊名: Ecotoxicology and Environmental Safety, 2020, Vol.190
来源数据库: Elsevier Journal
DOI: 10.1016/j.ecoenv.2019.110105
关键词: Copper toxicityNitrogen formsNitrate uptakeNitrate transporterOryza sativa
英文摘要: Abstract(#br)Copper (Cu) toxicity has a deleterious effect on plant growth, and different nitrogen (N) forms have significantly different impacts on the uptake and accumulation of heavy metals by plants. However, it remains unclear how excess Cu inhibits the growth of rice seedlings under different N forms. Here, we examined the mechanism of Cu toxicity inhibiting the growth of rice supplied with different N forms. Rice seedlings were grown in a nutrient solution with 0.81 mmol L −1 N, as ammonium (NH 4 + ), nitrate (NO 3 − ) and NH 4 + + NO 3 − , or without N (0 N) in the presence of 0.2 μmol L −1 CuSO 4 or 10 μmol L −1 CuSO 4 . The inhibition of shoot growth under excess Cu was more pronounced in plants that were supplied with NO 3 − than NH 4 + ; such inhibition was not induced by...
全文获取路径: Elsevier  (合作)
影响因子:2.203 (2012)

  • nitrate 硝酸盐
  • decreasing 递减
  • growth 生长
  • copper 
  • uptake 上风口