Xun Hongwei, Ma Xintong, Chen Jing, Yang Zhongzhou, Liu Bao, Gao Xiang, Li Guo, Yu Jiamiao, Wang Li, Pang Jinsong
Key Laboratory of Molecular Epigenetics of MOE, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
Key Laboratory of Molecular Epigenetics of MOE, School of Life Sciences, Northeast Normal University, Changchun 130024, China.
Environ Pollut. 2017 Oct;229:479-488. doi: 10.1016/j.envpol.2017.05.066. Epub 2017 Jun 30.
The potential impacts of environmentally accumulated zinc oxide nanoparticles (nZnOs) on plant growth have not been well studied. A transcriptome profile analysis of maize exposed to nZnOs showed that the genes in the shoots and roots responded differently. Although the number of differentially expressed genes (DEGs) in the roots was greater than that in the shoots, the number of up- or down-regulated genes in both the shoots and roots was similar. The enrichment of gene ontology (GO) terms was also significantly different in the shoots and roots. The "nitrogen compound metabolism" and "cellular component" terms were specifically and highly up-regulated in the nZnO-exposed roots, whereas the categories "cellular metabolic process", "primary metabolic process" and "secondary metabolic process" were down-regulated in the exposed roots only. Our results revealed the DEG response patterns in maize shoots and roots after nZnO exposure.
环境中积累的氧化锌纳米颗粒（nZnOs）对植物生长的潜在影响尚未得到充分研究。对暴露于nZnOs的玉米进行转录组图谱分析表明，地上部和根部的基因反应不同。虽然根部差异表达基因（DEGs）的数量多于地上部，但地上部和根部上调或下调基因的数量相似。基因本体（GO）术语的富集在地上部和根部也有显著差异。“氮化合物代谢”和“细胞成分”术语在暴露于nZnO的根部中特异性且高度上调，而“细胞代谢过程”、“初级代谢过程”和“次级代谢过程”类别仅在暴露的根部中下调。我们的结果揭示了nZnO暴露后玉米地上部和根部的DEG反应模式。
