A Possible Target Site of 1, 3, 5-Triazine Nitrification Inhibitors

DOI NDL Digital Collections JASI Web Site Web Site 5 Citations 11 References

Bibliographic Information

Other Title
  • 1, 3, 5-トリアジン系硝酸化成抑制剤の作用部位
  • 1,3,5-トリアジン系硝酸化成抑制剤の作用部位〔英文〕
  • 1 3 5 トリアジンケイ ショウサン カセイ ヨクセイザイ ノ サヨウ ブイ

Search this article

Abstract

Trichloromethyl-1, 3, 5-triazines were synthesized and their nitrification inhibitory activity in upland soil was evaluated by measuring pI50 (soil) values, the negative logarithm of molar I50 (soil). Furthermore, pI50 (soil-water) values were calculated using the soil adsorption coefficient. Measurement of accumulated nitrification intermediates, NH2OH and NO2--N, revealed a possibility that the nitrite formation step was blocked by the triazine inhibitors. The active triazines inhibited ammonia-oxidation step, but did not inhibit hydroxylamineoxidation step in Nitrosomonas europaea ATCC 25978. The formers inhibitory indices were expressed as pI50 (cell suspension) values. These results suggest that the target enzyme of 1, 3, 5-triazine nitrification inhibitors may be the ammonia monooxygenase in N. europaea ATCC 25978. In addition, a good correlation was found between the three types of pI50-values and hydrophobic parameter, logP, by quantitative structure activity relationship. The optimum logP values in the three equations obtained using pI50 (soil), pI50 (soil-water) and pI50 (cell suspension) values, were calculated as 2.65, 5.03 and 5.04, respectively.

Journal

Citations (5)*help

See more

References(11)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top