Kim Tae Yoon, Lee Sang-Hyo, Ku Hara, Lee Seung-Yop
Department of Biomedical Engineering, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul 04107, Korea.
Department of Mechanical Engineering, Sogang University, Baekbeom-ro 35, Mapo-gu, Seoul 04107, Korea.
Plants (Basel). 2019 Oct 24;8(11):446. doi: 10.3390/plants8110446.
Stress induced by climate change is a widespread and global phenomenon. Unexpected drought stress has a substantial effect on the growth and productivity of valuable crops. The effects of carbon materials on living organisms in response to abiotic stresses remain poorly understood. In this study, we proposed a new method for enhancing drought tolerance in cucumber ( L.) using carbon nanotubes and natural carbon materials called shungite, which can be easily mixed into any soil. We analyzed the phenotype and physiological changes in cucumber plants grown under conditions of drought stress. Shungite-treated cucumber plants were healthier, with dark green leaves, than control plants when watering was withheld for 21 days. Furthermore, compared with the control cucumber group, in the shungite-treated plants, the monodehydroascorbate content of the leaf, which is a representative marker of oxidative damage, was 66% lower. In addition, major scavenger units of reactive oxygen species and related drought stress marker genes were significantly upregulated. These results indicate that successive pretreatment of soil with low-cost natural carbon material improved the tolerance of cucumber plants to drought stress.
气候变化引发的胁迫是一种广泛存在的全球现象。意外的干旱胁迫对重要作物的生长和生产力有重大影响。碳材料对生物应对非生物胁迫的影响仍知之甚少。在本研究中，我们提出了一种新方法，即使用碳纳米管和一种名为水云母的天然碳材料来增强黄瓜（L.）的耐旱性，这种材料可轻松混入任何土壤中。我们分析了在干旱胁迫条件下生长的黄瓜植株的表型和生理变化。当停水21天时，经水云母处理的黄瓜植株比对照植株更健康，叶片呈深绿色。此外，与对照黄瓜组相比，经水云母处理的植株中，作为氧化损伤代表性标志物的叶片单脱氢抗坏血酸含量降低了66%。此外，活性氧的主要清除单元和相关干旱胁迫标记基因显著上调。这些结果表明，用低成本天然碳材料对土壤进行连续预处理可提高黄瓜植株对干旱胁迫的耐受性。
