大家要來種菜了嗎!! 氫水蔬菜 讚啦!!
氫氣生物學效應研究方面，植物效應研究中國學者，尤其是南京農業大學獨樹一幟，最近崔瑾教授課題組連續發表氫對蔬菜品質影響的研究，剛剛線上發表一篇論文證明，氫氣水可以提高常見蔬菜，小白菜能耐受重金屬鎘污染，減少蔬菜中重金屬水準，提高蔬菜抗氧化物質水準。研究說明，氫水在蔬菜生產中具有應用前景。
Fig. 2. HRW pretreatment alleviated Cd stress-induced Chinese cabbage seedlings growth inhibition. The seedlings in solution were supplemented with 0 or 50% saturationof HRW for 48 h, followed by another 24 h incubation in 0 or 50 _M CdCl2. Bar = 3 cm (A). Changes in root length (B) and fresh weight (C) during the 24 h treated with 0 or50 _M CdCl2. Data are means ± SE from three independent experiments. Bars with different letters are significantly different at P < 0.05 according to Duncan’s multiple rangetest.
Fig. 4. Cadmium localization in root tissues of Chinese cabbage. The roots were pretreatment with 0 or 50% saturation of HRW solution for 48 h, followed by exposure to 0or 50 _M CdCl2for another 24 h. Bar = 20 _m. Arrows point to precipitates of cadmium–dithizone.
J Plant Physiol. 2014 Nov 18;175C:174-182. doi: 10.1016/j.jplph.2014.09.017. [Epub ahead of print]
Hydrogen-rich water enhances cadmium tolerance in Chinese cabbage by reducing cadmium uptake and increasing antioxidant capacities.
Wu Q1, Su N1, Cai J1, Shen Z1, Cui J2.
Author information1College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.2College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China. Electronic address: cuijin@njau.edu.cn.
The aim of the present paper was to understand the specific mechanism of hydrogen-rich water (HRW) in alleviating cadmium (Cd) toxicity in Chinese cabbage (Brassica campestris spp. chinensis L.). Our results showed that the addition of 50% saturation HRW significantly alleviated the Cd toxic symptoms, including the improvement of both root elongation and seedling growth inhibition. These responses were consistent with a significant decrease of Cd accumulation in roots and shoots, which was further confirmed by the histochemical staining. Molecular evidence illustrated that Cd-induced up-regulations of IRT1 and Nramp1 genes, responsible for Cd absorption, were blocked by HRW. By contrast, Cd-induced up-regulation of the HMA3 gene, which regulates Cd sequestration into the root vacuoles, was substantially strengthened by HRW. Furthermore, compared with those in Cd stress alone, the expressions of HMA2 and HMA4, which function in the transportation of Cd to xylem, were repressed by co-treatment with HRW. HRW enhanced the activities of antioxidant enzymes, including superoxide dismutase, guaiacol peroxidase, catalase and ascorbate peroxidase. These results were further confirmed by the alleviation of oxidative damage, as indicated by the decrease of thiobarbituric acid reactive substances (TBARS) and reactive oxygen species (ROS) production. Taken together, these results suggest that the improvement of Cd tolerance by HRW was associated with reduced Cd uptake and increased antioxidant defense capacities. Therefore, the application of HRW may be a promising strategy to improve Cd tolerance of Chinese cabbage.
文章來源：http://blog.sciencenet.cn/blog-41174-856258.html
留言列表
