转录因子
脱落酸
生物
非生物胁迫
锌指
过氧化氢酶
超氧化物歧化酶
盐度
非生物成分
细胞生物学
植物
抄写(语言学)
基因
生物化学
抗氧化剂
生态学
语言学
哲学
作者
Yang Li,Miaomiao Tian,Feng Zhu,Jingjing Zhang,Jianhua Lü,Xiaokang Fu,Liang Ma,Hengling Wei,Hantao Wang
出处
期刊:Plants
[MDPI AG]
日期:2023-10-31
卷期号:12 (21): 3740-3740
被引量:1
标识
DOI:10.3390/plants12213740
摘要
Salt stress is a major abiotic stressor that can severely limit plant growth, distribution, and crop yield. DNA-binding with one finger (Dof) is a plant-specific transcription factor that plays a crucial role in plant growth, development, and stress response. In this study, the function of a Dof transcription factor, GhDof1.7, was investigated in upland cotton. The GhDof1.7 gene has a coding sequence length of 759 base pairs, encoding 252 amino acids, and is mainly expressed in roots, stems, leaves, and inflorescences. Salt and abscisic acid (ABA) treatments significantly induced the expression of GhDof1.7. The presence of GhDof1.7 in Arabidopsis may have resulted in potential improvements in salt tolerance, as suggested by a decrease in H2O2 content and an increase in catalase (CAT) and superoxide dismutase (SOD) activities. The GhDof1.7 protein was found to interact with GhCAR4 (C2-domain ABA-related 4), and the silencing of either GhDof1.7 or GhCAR4 resulted in reduced salt tolerance in cotton plants. These findings demonstrate that GhDof1.7 plays a crucial role in improving the salt tolerance of upland cotton and provide insight into the regulation of abiotic stress response by Dof transcription factors.
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