Jiali Wei*, Ying Zou, Ping Li, Xiaojun Yuan
Phyton-International Journal of Experimental Botany, Vol.89, No.4, pp. 883-891, 2020, DOI:10.32604/phyton.2020.010973
Abstract TiO2 nanoparticles (nano-TiO2) are widely used in the world, and a
considerable amount of nano-TiO2 is released into the environment, with toxic
effects on organisms. In the various species of higher plants, growth, including
seed germination, root elongation, and biomass accumulation, is affected by
nano-TiO2. However, the underlying molecular mechanisms remain to be elucidated. In this study, we observed that nano-TiO2 promoted root elongation in a
dose-dependent manner. Furthermore, we found that nano-TiO2 elevated auxin
accumulation in the root tips of the auxin marker lines DII-VENUS and DR5::
GUS, and, correspondingly, quantitative real-time PCR analysis revealed that
nano-TiO2 increased the… More >
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