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首页> 外文期刊>Journal of Hazardous Materials >Hydrogen-rich water alleviates aluminum-induced inhibition of root elongation in alfalfa via decreasing nitric oxide production
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Hydrogen-rich water alleviates aluminum-induced inhibition of root elongation in alfalfa via decreasing nitric oxide production

机译：富氢水通过减少一氧化氮的产生减轻铝诱导的苜蓿根系伸长抑制

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摘要

One of the earliest and distinct symptoms of aluminum (Al) toxicity is the inhibition of root elongation. Although hydrogen gas (H_2) is recently described as an important bio-regulator in plants, whether and how H_2 regulates Al-induced inhibition of root elongation is largely unknown. To address these gaps, hydrogen-rich water (HRW) was used to investigate a physiological role of H_2 and its possible molecular mechanism. Individual or simultaneous (in particular) exposure of alfalfa seedlings to Al, or a fresh but not old nitric oxide (NO)-releasing compound sodium nitroprusside (SNP), not only increased NO production, but also led to a significant inhibition of root elongation. Above responses were differentially alleviated by pretreatment with 50% saturation of HRW. The addition of HRW also alleviated the appearance of Al toxicity symptoms, including the improvement of seedling growth and less accumulation of Al. Subsequent results revealed that the removal of NO by the NO scavenger, similar to HRW, could decrease NO production and alleviate Al- or SNP-induced inhibition of root growth. Thus, we proposed that HRW alleviated Al-induced inhibition of alfalfa root elongation by decreasing NO production. Such findings may be applicable to enhance crop yield and improve stress tolerance.
机译：铝（Al）毒性的最早且独特的症状之一是对根伸长的抑制。尽管最近将氢气（H_2）描述为植物中的重要生物调节剂，但H_2是否以及如何调节Al诱导的根伸长抑制作用尚不清楚。为了解决这些差距，富氢水（HRW）用于研究H_2的生理作用及其可能的分子机制。苜蓿幼苗单独或同时（特别是）暴露于Al或新鲜但不老的释放一氧化氮（NO）的硝普钠（SNP），不仅增加了NO的产生，而且还显着抑制了根伸长。通过用HRW饱和度达到50％的预处理，上述反应得到了不同程度的缓解。加入HRW还可以减轻Al毒性症状的出现，包括改善幼苗生长和减少Al的积累。随后的结果表明，类似于HRW的NO清除剂清除NO可以减少NO的产生并减轻Al-或SNP诱导的根生长抑制。因此，我们提出，HRW通过减少NO的产生减轻Al诱导的苜蓿根伸长的抑制。这些发现可能适用于提高农作物产量和改善胁迫耐受性。

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  • 来源
    《Journal of Hazardous Materials》 |2014年第28期|40-47|共8页
  • 作者

    Meng Chen; Weiti Cui; Kaikai Zhu; Yanjie Xie; Chunhua Zhang; Wenbiao Shen;

  • 作者单位

    College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;

    College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;

    College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;

    College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;

    Laboratory Center of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China;

    College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, 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

    Aluminum (Al) toxicity; Hydrogen-rich water; Medicago sativa; Nitric oxide; Root elongation inhibition;

    机译：铝（Al）毒性;富氢水;紫花苜蓿;一氧化氮;根伸长抑制;

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