Chen Yan, Chen Zhangliang, Kang Juqing, Kang Dingming, Gu Hongya, Qin Genji
Plant Mol Biol Report. 2013;31(1):87-97. doi: 10.1007/s11105-012-0481-z.
Low temperature affects plant growth and crop productivity. The genes are a class of transcription factors that play important roles in cold response. Here we report that AtMYB14 participates in freezing tolerance in by affecting expression of genes. The gene was down-regulated by cold treatment. encodes a nuclear protein that functions as an R2R3-MYB transcription activator. Knock-down of by artificial microRNA increased the tolerance to freezing stress. Both the genes and the downstream genes were induced to a much higher level in knock-down plants than in wild type under cold treatment. Our results suggest that AtMYB14 plays an important role in the plant response to cold stress.
低温影响植物生长和作物生产力。这些基因是一类在冷响应中起重要作用的转录因子。在此我们报道，AtMYB14通过影响这些基因的表达参与拟南芥的耐冻性。该基因经冷处理后表达下调。AtMYB14编码一种核蛋白，作为R2R3-MYB转录激活因子发挥作用。通过人工microRNA敲低AtMYB14可提高对冻害胁迫的耐受性。在冷处理下，与野生型相比，AtMYB14敲低植株中这些基因及其下游基因均被诱导到更高水平。我们的结果表明，AtMYB14在植物对冷胁迫的响应中起重要作用。
