DNA-Binding with One Finger (Dof) Transcription Factor Gene Family Study Reveals Differential Stress-Responsive Transcription Factors in Contrasting Drought Tolerance Potato Species

被引:9
作者
Jin, Xin [1 ,2 ]
Wang, Zemin [1 ,2 ]
Ai, Qianyi [2 ]
Li, Xuan [2 ]
Yang, Jiangwei [1 ,2 ]
Zhang, Ning [1 ,2 ]
Si, Huaijun [1 ,2 ]
机构
[1] Gansu Agr Univ, State Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China
[2] Gansu Agr Univ, Coll Life Sci & Technol, Lanzhou 730070, Peoples R China
关键词
potato; Dof family; drought; stress response; CDF; lncRNA; FLOWERING TIME; PROTEIN; OVEREXPRESSION; IDENTIFICATION; ACTIVATOR; INTERACTS; GROWTH;
D O I
10.3390/ijms25063488
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
DNA-binding with one finger (Dof) proteins comprise a large family that play central roles in stress tolerance by regulating the expression of stress-responsive genes via the DOFCORE element or by interacting with other regulatory proteins. Although the Dof TF has been identified in a variety of species, its systemic analysis in potato (Solanum tuberosum L.) is lacking and its potential role in abiotic stress responses remains unclear. A total of 36 potential Dof genes in potato were examined at the genomic and transcriptomic levels in this work. Five phylogenetic groups can be formed from these 36 Dof proteins. An analysis of cis-acting elements revealed the potential roles of Dofs in potato development, including under numerous abiotic stress conditions. The cycling Dof factors (CDFs) might be the initial step in the abiotic stress response signaling cascade. In potato, five CDFs (StCDF1/StDof19, StCDF2/StDof4, StCDF3/StDof11, StCDF4/StDof24, and StCDF5/StDof15) were identified, which are homologs of Arabidopsis CDFs. The results revealed that these genes were engaged in a variety of abiotic reactions. Moreover, an expression analysis of StDof genes in two potato cultivars ('Long10 ' (drought tolerant) and 'DXY' (drought susceptible)) of contrasting tolerances under drought stress was carried out. Further, a regulatory network mediated by lncRNA and its target Dofs was established. The present study provides fundamental knowledge for further investigation of the roles of Dofs in the adaptation of potato to drought stress, aiming to provide insights into a viable strategy for crop improvement and stress-resistance breeding.
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页数:17
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