| Literature DB >> 26408972 |
Nhan Le Van1, Chuanxin Ma2, Jianying Shang3, Yukui Rui4, Shutong Liu3, Baoshan Xing2.
Abstract
Nanoparticles and transgenic plants are recent scientific developments that require systematic study to understand their potential risks to human health. The effects of CuO nanoparticles (NPs) on Bt-transgenic cotton and conventional cotton are reported here. CuO NPs inhibited the growth, development, nutrient content, and indole-3-acetic acid (IAA) and abscisic acid (ABA) concentrations of transgenic and conventional cotton. Transmission electron microscopy (TEM) images showed CuO NPs aggregated on the epidermis of conventional cotton leaves, whereas it had reached into the cells of transgenic cotton leaves by endocytosis. Most CuO NPs aggregates were found on the root outer epidermis and the rest were located in intercellular spaces of both conventional and Bt-transgenic cottons. CuO NPs enhanced the expression of the exogenous gene encoding of Bt toxin protein in leaves and roots, especially at low CuO NP concentrations, providing an important benefit for Bt cotton insect resistance.Entities:
Keywords: Bt-transgenic cotton; CuO nanoparticle; Expression of Bt toxin protein; Nutrient element; Phytotoxicity; Plant hormone
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Year: 2015 PMID： 26408972 DOI： 10.1016/j.chemosphere.2015.09.028
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086