...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural and Food Chemistry >Sodium Hydrosulfide Mitigates Cadmium Toxicity by Promoting Cadmium Retention and Inhibiting Its Translocation from Roots to Shoots in Brassica napus
【24h】

Sodium Hydrosulfide Mitigates Cadmium Toxicity by Promoting Cadmium Retention and Inhibiting Its Translocation from Roots to Shoots in Brassica napus

机译：氢磺化钠通过促进镉潴留和抑制从根部的猪肉中的易位来减轻镉的毒性，以在Brassica Napus拍摄

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The association between hydrogen sulfide (H2S) and cell wall composition with regard to the mitigation of cadmium (Cd) toxicity in Brassica napus L. was investigated. Cd caused growth retardation, leaf chlorosis, and decreased endogenous H2S content in Brassica napus roots. Stimulating L-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth, reduced Cd content in stems and leaves, and rescued Cd-induced chlorosis. Furthermore, increased Cd retention was observed in root cell walls, indicating that NaHS reduced Cd movement from the roots to upper-plant parts. Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots, thereby increasing Cd retention in pectin fractions. However, intensification of H2S barely affected hemicellulose content under Cd stress. Intensified H2S signal, therefore, alleviates Cd toxicity in Brassica napus by increasing pectin content and its demethylation, increasing Cd fixation in cell walls, and reducing root-to-shoot Cd translocation.
机译：研究了硫化氢（H2S）与细胞壁组合物的关联关于芸苔纳珀L.缓解镉（CD）毒性的毒性。 CD引起了生长延迟，叶氯阳，并降低了芸苔Napus Roots的内源H2S含量。用H 2 S释放器（NaHs）刺激L-半胱氨酸脱硫胺（LCD）介导的H2S产生显着改善了植物生长，茎和叶中的CD含量降低，并垄断了CD诱导的氯化。此外，在根细胞壁中观察到增加的Cd保持，表明NaHs从根部到上部植物部分降低了CD运动。外源性NaH也显着提高了果胶含量的含量和果胶甲基酯酶的根壁中的含量，从而增加了果胶级分中的CD保留。然而，在CD胁迫下，H2S的强化几乎影响了半纤维素含量。因此，增强的H 2 S信号通过增加果胶含量及其去甲基化，增加细胞壁中的CD固定，降低根对芽CD易位，减轻了芸苔类内部内部的CD毒性。

著录项

相似文献

  • 外文文献
  • 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