...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Pollution >Selenium induces changes of rhizosphere bacterial characteristics and enzyme activities affecting chromium/selenium uptake by pak choi (Brassica campestris L. ssp. Chinensis Makino) in chromium contaminated soil
【24h】

Selenium induces changes of rhizosphere bacterial characteristics and enzyme activities affecting chromium/selenium uptake by pak choi (Brassica campestris L. ssp. Chinensis Makino) in chromium contaminated soil

机译：硒在铬污染土壤中诱导影响铬/硒摄取的根际细菌特征和酶活性的变化，铬污染土壤

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Understanding the chemical response and characteristics of bacterial communities in soil is critical to evaluate the effects of selenium (Se) supplement on plant growth and chromium (Cr)/Se uptake in Cr contaminated soil. The rhizosphere soil characteristics of pak choi (Brassica campestris L ssp. Chinensis Makino) were investigated in soil contaminated with different levels and forms of Cr when supplemented with Se. Although inhibition of plant growth caused by Cr stress was not completely alleviated by Se, Cr content in plant tissues decreased in Cr(VI)120Se5 treatment (Cr(VI): 120 mg kg(-1) soil; Se: 5 mg kg(-1) soil) and its bioavailability in soil decreased in Cr(III)200Se5 (Cr(III): 200 mg kg(-1) soil; Se: 5 mg kg(-1) soil) treatment. Moreover, antagonism of Cr and Se on soil enzyme activities and bacterial communities were revealed. Notably, results of Cr(VI) reduction and Se metabolism functional profiles confirmed that bacterial communities play a critical role in regulating Cr/Se bioavailability. Additionally, the increases of Se bioavailability in Cr contaminated soil were ascribed to oxidation of Cr(VI) and reduction of Se reductases proportions, as well as the enhancing of pH in soil. These findings reveal that Se has the potential capacity to sustain the stability of microdomain in Cr contaminated soil. (C) 2019 Elsevier Ltd. All rights reserved.
机译：了解土壤中细菌群落的化学反应和特征对于评估硒（SE）补充对Cr受污染土壤植物生长和铬（Cr）/ Se摄取的影响至关重要。 Pak Choi（芸苔Camestris L SSP）的根际土壤特性。在用SE补充有不同水平和Cr形式的土壤中研究了污染的土壤中的土壤。虽然Cr应激引起的植物生长的抑制不完全缓解，但植物组织中的Cr含量在Cr（VI）120se5处理中减少（Cr（VI）：120 mg kg（-1）土壤; SE：5毫克千克（ -1）土壤）和其在土壤中的生物利用度降低（III）200SE5（Cr（iii）：200mg kg（-1）土壤; SE：5mg kg（-1）土壤）处理。此外，揭示了Cr和Se对土壤酶活性和细菌群落的拮抗作用。值得注意的是，Cr（VI）还原和Se代谢功能谱的结果证实，细菌社区在调节Cr / SE生物利用度方面发挥着关键作用。另外，Cr受污染土壤中的SE生物利用度的增加归因于Cr（VI）的氧化，并减少Se还原酶比例，以及土壤中pH的增强。这些发现表明，SE具有维持Cr受污染土壤中微米域稳定性的潜在能力。 （c）2019 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Environmental Pollution》 |2019年第6期|716-727|共12页
  • 作者

    Cai Miaomiao; Hu Chengxiao; Wang Xu; Zhao Yuanyuan; Jia Wei; Sun Xuecheng; Elyamine Ali Mohamed; Zhao Xiaohu;

  • 作者单位

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Minist Agr Key Lab Testing & Evaluat Agroprod Safety & Qual Guangzhou 510640 Guangdong Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

    Huazhong Agr Univ Res Ctr Trace Elements Coll Resources & Environm Key Lab Arable Land Conservat Middle & Lower Reac Minist Agr Hubei Prov Engn Lab New Fertilizers Re Wuhan 430070 Hubei Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chromium; Selenium; Bacterial community; Enzyme activity; Rhizosphere soil;

    机译：铬;硒;细菌群落;酶活性;根际土壤;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号