Cheng Fan, Liu Yu-Feng, Lu Guang-Yuan, Zhang Xue-Kun, Xie Ling-Li, Yuan Cheng-Fei, Xu Ben-Bo
College of Life Science, Yangtze University, Jingzhou 434025, China.
Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, China.
J Plant Physiol. 2016 Apr 1;193:57-63. doi: 10.1016/j.jplph.2016.02.011. Epub 2016 Mar 3.
Researchers have proven that nanomaterials have a significant effect on plant growth and development. To better understand the effects of nanomaterials on plants, Zhongshuang 11 was treated with different concentrations of graphene oxide. The results indicated that 25-100mg/l graphene oxide treatment resulted in shorter seminal root length compared with the control samples. The fresh root weight decreased when treated with 50-100mg/l graphene oxide. The graphene oxide treatment had no significant effect on the Malondialdehyde (MDA) content. Treatment with 50mg/l graphene oxide increased the transcript abundance of genes involved in ABA biosynthesis (NCED, AAO, and ZEP) and some genes involved in IAA biosynthesis (ARF2, ARF8, IAA2, and IAA3), but inhibited the transcript levels of IAA4 and IAA7. The graphene oxide treatment also resulted in a higher ABA content, but a lower IAA content compared with the control samples. The results indicated that graphene oxide modulated the root growth of Brassica napus L. and affected ABA and IAA biosynthesis and concentration.
研究人员已证明纳米材料对植物生长发育有显著影响。为了更好地理解纳米材料对植物的影响，用不同浓度的氧化石墨烯处理中双11。结果表明，与对照样品相比，25 - 100mg/l氧化石墨烯处理导致种子根长度缩短。用50 - 100mg/l氧化石墨烯处理时，鲜根重量下降。氧化石墨烯处理对丙二醛（MDA）含量没有显著影响。用50mg/l氧化石墨烯处理增加了参与脱落酸生物合成的基因（NCED、AAO和ZEP）以及一些参与生长素生物合成的基因（ARF2、ARF8、IAA2和IAA3）的转录丰度，但抑制了IAA4和IAA7的转录水平。与对照样品相比，氧化石墨烯处理还导致脱落酸含量较高，但生长素含量较低。结果表明，氧化石墨烯调节了甘蓝型油菜的根系生长，并影响了脱落酸和生长素的生物合成及浓度。
