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Comparing nitrification inhibitors to mitigate cadmium accumulation in pakchoi and elucidating the associated microbial mechanisms
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Wenxin DU, Qingyang ZHU, Xiangting JING, Weijie HU, Yao ZHUANG, Yijie JIANG, Chongwei JIN. Comparing nitrification inhibitors to mitigate cadmium accumulation in pakchoi and elucidating the associated microbial mechanisms[J]. Journal of Zhejiang University Science B, 1998, -1(-1): .
@article{title="Comparing nitrification inhibitors to mitigate cadmium accumulation in pakchoi and elucidating the associated microbial mechanisms",
author="Wenxin DU, Qingyang ZHU, Xiangting JING, Weijie HU, Yao ZHUANG, Yijie JIANG, Chongwei JIN",
journal="Journal of Zhejiang University Science B",
volume="-1",
number="-1",
pages="",
year="1998",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B2300449"
}
%0 Journal Article
%T Comparing nitrification inhibitors to mitigate cadmium accumulation in pakchoi and elucidating the associated microbial mechanisms
%A Wenxin DU
%A Qingyang ZHU
%A Xiangting JING
%A Weijie HU
%A Yao ZHUANG
%A Yijie JIANG
%A Chongwei JIN
%J Journal of Zhejiang University SCIENCE B
%V -1
%N -1
%P
%@ 1673-1581
%D 1998
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B2300449
TY - JOUR
T1 - Comparing nitrification inhibitors to mitigate cadmium accumulation in pakchoi and elucidating the associated microbial mechanisms
A1 - Wenxin DU
A1 - Qingyang ZHU
A1 - Xiangting JING
A1 - Weijie HU
A1 - Yao ZHUANG
A1 - Yijie JIANG
A1 - Chongwei JIN
J0 - Journal of Zhejiang University Science B
VL - -1
IS - -1
SP -
EP -
%@ 1673-1581
Y1 - 1998
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B2300449
Abstract: The use of nitrification inhibitors has been suggested as a strategy to decrease cadmium (Cd) accumulation in crops. However, the most efficient nitrification inhibitor for mitigating crop Cd accumulation remains to be elucidated, and whether and how changes in soil microbial structure are involved in this process also remains unclear. To address these questions, this study applied three commercial nitrification inhibitors, namely, dicyandiamide (DCD), 3,4-dimethylpyrazole phosphate (DMPP), and nitrapyrin, to pakchoi. The results showed that both DCD and DMPP (but not nitrapyrin) could efficiently decrease Cd concentrations in pakchoi in urea- and ammonium-fertilized soils. In addition, among the three tested nitrification inhibitors, DMPP was the most efficient at decreasing the Cd concentration in pakchoi. The nitrification inhibitors decreased pakchoi Cd concentrations by suppressing acidification-induced Cd availability and reshaping the soil microbial structure; the most effective nitrification inhibitor was DMPP. Ammonia oxidation generates the most protons during nitrification and is inhibited by nitrification inhibitors. Changes in environmental factors and predatory bacterial abundance caused by the nitrification inhibitors changed the soil microbial structure and increased the potential participants in plant Cd accumulation. In summary, our study identified DMPP as the most efficient nitrification inhibitor for mitigating crop Cd contamination and observed that the soil microbial structural changes caused by the nitrification inhibitors contributed to decreasing Cd concentration in pakchoi.
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