栽培
转录因子
转基因作物
盐(化学)
基因
基因表达
生物
非生物胁迫
转基因
平衡
盐度
非生物成分
植物
细胞生物学
化学
生物化学
生态学
物理化学
作者
Zhuo Zhang,Youbing Zhao,Yifan Chen,Yueming Li,Luqing Pan,Siyu Wang,Piwu Wang,Shiliang Fan
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2023-07-26
卷期号:18 (7): e0288985-e0288985
被引量:1
标识
DOI:10.1371/journal.pone.0288985
摘要
TEOSINTE BRANCHED1/CYCLOIDEA/PROLIFERATING CELL FACTOR (TCP) transcription factors are a plant-specific family and play roles in plant growth, development, and responses to biotic and abiotic stresses. However, little is known about the functions of the TCP transcription factors in the soybean cultivars with tolerance to salt stress. In this study, TCP9-like, a TCP transcription factor, was identified in the soybean cultivars exposed to salt stress. The expression of TCP9-like gene in the roots of salt-tolerant soybean cultivars was higher than that in salt-sensitive cultivars treated with NaCl. The overexpression of TCP9-like enhanced the salt tolerance of the salt-sensitive soybean cultivar 'DN50'. In T2 generation, the plants with TCP9-like overexpression had significantly lower Na+ accumulation and higher K+ accumulation than the WT plants exposed to 200 or 250 mmol/L NaCl. The K+/Na+ ratio in the plants overexpressing TCP9-like was significantly higher than that in WT plants treated with 200 mmol/L NaCl. Meanwhile, the overexpression of TCP9-like up-regulated the expression levels of GmNHX1, GmNHX3, GmSOS1, GmSOS2-like, and GmHKT1, which were involved in the K+/Na+ homeostasis pathway. The findings indicated that TCP9-like mediated the regulation of both Na+ and K+ accumulation to improve the tolerance of soybean to salt stress.
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