MYB公司
生物
非生物胁迫
RNA干扰
非生物成分
转基因作物
转录因子
甘氨酸
野生型
盐度
基因
突变体
转基因
生物化学
植物
细胞生物学
核糖核酸
氨基酸
生态学
古生物学
作者
Yuxuan He,Yingshan Dong,Xiangdong Yang,Dongquan Guo,Xueyan Qian,Fan Yan,Ying Wang,Jing Wang,Qingyu Wang
出处
期刊:Genome
[Canadian Science Publishing]
日期:2020-01-01
卷期号:63 (1): 13-26
被引量:33
标识
DOI:10.1139/gen-2018-0132
摘要
Soil salinity significantly reduces soybean (Glycine max L.) production worldwide. Plants resistance to stress conditions is a complex characteristic regulated by multiple signaling pathways. The v-Myb avian myeloblastosis viral oncogene homolog (MYB) transcription factor (TF) plays a crucial role in plant development, secondary metabolism, and abiotic stress responses. GmMYB68-overexpression and RNA interference (RNAi) lines were established for examining the function of G. max GmMYB68 in plant responses to abiotic stresses. The predicted amino acid sequence of GmMYB68 was similar to that of R2R3-MYB proteins. Quantitative real-time PCR analysis revealed that GmMYB68 expression varied in response to abiotic stresses. GmMYB68-overexpression lines showed enhanced resistance to salt and alkali stresses and their osmotic adjustment and photosynthetic rates were also stronger than that of GmMYB68-RNAi and wild type plants. Although wild type and transgenic plants showed no significant differences in agronomic traits under normal conditions, the overexpression of GmMYB68 increased grain number and 100-grain weights under salt stress. Our study identified a valuable TF associated with stress response in soybean, as its overexpression might help improve salt and alkali tolerance in soybean and other crops.
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