Silicon enhances the tolerance of Poa annua to cadmium by inhibiting its absorption and oxidative stress
作者: P. LiC. Z. ZhaoY. Q. ZhandX. M. WangJ. F. WangF. WangY. R. Bi
作者单位: 1Lanzhou University
2Qinhai University
刊名: Biologia Plantarum, 2017, Vol.61 (4), pp.741-750
来源数据库: Springer Journal
DOI: 10.1007/s10535-017-0731-x
关键词: Ascorbate proxidaseCatalaseGlucose-6-phosphate dehydrogenaseMalondialdehydeNa3PO4PeroxidaseSuperoxide dismutase
英文摘要: Silicon (Si) could enhance plant tolerance to heavy metals; however, the mechanism of Si-mediated alleviation of cadmium (Cd) toxicity in Poa annua was not clear. In this study, we found that 100 μM Cd significantly inhibited the growth of Poa annua seedlings. Furthermore, Cd enhanced the H2O2 and malondialdehyde content. The activities of superoxide dismutase and ascorbate peroxidase were enhanced, but the catalase and peroxidase activities were reduced by Cd treatment. Cd also altered the activity and expression of glucose-6-phosphate dehydrogenase (G6PDH) in Poa annua roots. Application of Na3PO4, an inhibitor of G6PDH, decreased the activity of G6PDH, the expression of G6PDH , and increased the Cd toxicity, suggesting that G6PDH is involved...
原始语种摘要: Silicon (Si) could enhance plant tolerance to heavy metals; however, the mechanism of Si-mediated alleviation of cadmium (Cd) toxicity in Poa annua was not clear. In this study, we found that 100 μM Cd significantly inhibited the growth of Poa annua seedlings. Furthermore, Cd enhanced the H2O2 and malondialdehyde content. The activities of superoxide dismutase and ascorbate peroxidase were enhanced, but the catalase and peroxidase activities were reduced by Cd treatment. Cd also altered the activity and expression of glucose-6-phosphate dehydrogenase (G6PDH) in Poa annua roots. Application of Na3PO4, an inhibitor of G6PDH, decreased the activity of G6PDH, the expression of G6PDH , and increased the Cd toxicity, suggesting that G6PDH is involved...
全文获取路径: Springer  (合作)
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影响因子:1.692 (2012)

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关键词翻译
关键词翻译
  • expression 表示
  • stress 应力
  • oxidative 氧化的
  • demonstrated 探明的储量
  • phosphate 磷酸盐
  • catalase 过氧化氢酶
  • tolerance 耐性
  • together 共同
  • alleviation 缓和
  • dehydrogenase 脱氢酶