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首页> 外文期刊>Environmental Science & Technology >Graphene Oxide as an Effective Soil Water Retention Agent Can Confer Drought Stress Tolerance to Paeonia ostii without Toxicity
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Graphene Oxide as an Effective Soil Water Retention Agent Can Confer Drought Stress Tolerance to Paeonia ostii without Toxicity

机译：石墨烯氧化物作为一种有效的土壤水保留剂可以赋予芍药胁迫耐受性，没有毒性

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摘要

Graphene oxide (GO) is considered to be an emerging environmental pollutant with its inevitable release into the environment. Thus, its potential environmental risks and biosafety are receiving increased attention. In this study, Paeonia ostii was exposed to GO under drought stress. The results demonstrated that GO prevented soil water from evaporating due to its hydrophilic oxygen-containing functional groups and did not change the soil pH. Moreover, GO treatment resulted in lower increases in reactive oxygen species, relative electrical conductivity and free proline content, and greater increases in the antioxidant enzyme activities of P. ostii under drought stress compared with those in the control. And under drought stress, higher photosynthesis, more intact mesophyll cells and organelles and open stomata were found in P. ostii under GO treatment. Furthermore, GO treatment induced greater changes in the expression patterns of genes required for lignin biosynthesis, photosynthesis-antenna proteins, carbon fixation in photosynthetic organisms, and glyoxylate and dicarboxylate metabolism. Additionally, GO did not accumulate in P. ostii due to the soil environment and the electrostatic repulsion between GO and the roots. GO did not have toxic effects on P. ostii and was an effective soil water retention agent; therefore, it could be economically beneficial for the production of plants under drought stress.
机译：石墨烯氧化物（GO）被认为是一种新兴的环境污染物，其不可避免地释放到环境中。因此，其潜在的环境风险和生物安全受到增加的关注。在这项研究中，Paeonia Ostii暴露在干旱胁迫下。结果证明，由于其亲水性含氧官能团，因此逐渐防尘蒸发，并且没有改变土壤pH。此外，去处理导致反应性氧物质，相对导电性和游离脯氨酸含量下降，并且与对照中的干旱胁迫下，P. Ostii的抗氧化酶活性的较高增加。在干旱胁迫下，较高的光合作用，更完整的嗜培素细胞和细胞器，在去治疗中发现了ostii中的开放气孔。此外，去治疗诱导木质素生物合成，光合作用 - 天线蛋白质，光合生物中碳固定和乙醛酸和二羧酸盐代谢所需的基因表达模式的更大变化。此外，由于土壤环境和Go和根部之间的静电排斥，去没有在P. Ostii中积累。 Go对P. Ostii没有毒性作用，是一种有效的土壤水保留剂;因此，在干旱胁迫下生产植物可能是经济上有益的。

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  • 来源
    《Environmental Science & Technology》 |2020年第13期|8269-8279|共11页
  • 作者

    Daqiu Zhao; Ziwen Fang; Yuhan Tang; Jun Tao;

  • 作者单位

    College of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 P. R. China;

    College of Horticulture and Plant Protection Yangzhou University Yangzhou 22S009 P. R. China;

    College of Horticulture and Plant Protection Yangzhou University Yangzhou 225009 P. R. China;

    College of Horticulture and Plant Protection and Joint International Research Laboratory of Agriculture and Agri- Product Safety the Ministry of Education of China Yangzhou University Yangzhou 22S009 P. 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);
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  • 正文语种 eng
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