Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis

Abstract Carmine radish (Raphanus sativus L.) is cultivated in Fuling, Chongqing, for its red color. Dof-TFs are critical in regulating plant growth, development, stress responses, and signal transduction.This work comprehensively examined the structure, evolution, and expression of the carmine radi...

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Main Authors: Caiming Gou, Jia Li, Bo Chen, Guoting Cheng, Zhangfei Zheng, Hua Peng, Ahmed H. El-Sappah
Format: Article
Language:English
Published: Nature Portfolio 2025-02-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-88308-6
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author Caiming Gou
Jia Li
Bo Chen
Guoting Cheng
Zhangfei Zheng
Hua Peng
Ahmed H. El-Sappah
author_facet Caiming Gou
Jia Li
Bo Chen
Guoting Cheng
Zhangfei Zheng
Hua Peng
Ahmed H. El-Sappah
author_sort Caiming Gou
collection DOAJ
description Abstract Carmine radish (Raphanus sativus L.) is cultivated in Fuling, Chongqing, for its red color. Dof-TFs are critical in regulating plant growth, development, stress responses, and signal transduction.This work comprehensively examined the structure, evolution, and expression of the carmine radish Dof gene and its behavior under cadmium (Cd) stress. The radish genome has 59 RsDofs, which are divided into nine clusters (A: 8, B1: 10, B2: 10, C1: 3, C2.1: 5, C2.2: 4, C3: 11, D1: 4, and D2: 4). Phylogenetic tree analysis revealed significant Dof gene family resemblance between Arabidopsis thaliana and Brassica napus. Perhaps segment duplication resulted in RsDof gene family expansion. Cd stress-induced RsDof expression patterns were studied using an RNA-seq atlas and qRT-PCR. The majority of RsDofs were tissue-specific and Cd-sensitive. The involvement of RsDof genes in Cd stress response and anthocyanin synthesis was verified using qRT-PCR. RsDof33 is involved in Cd stress response and anthocyanin synthesis. A. thaliana overexpressed the recombinant fusion protein RsDof33-GFP, which was localized to the nucleus, resulting in fewer rosette leaves, delayed flowering, and higher anthocyanin concentration. RsDof33-expressing plants had significantly higher transcript levels of the auxin biosynthetic genes YUCCA (AtYUC2), auxin efflux carrier (AtPIN4), and AtKNAT2, which are involved in leaf shape development, as well as AtPAL, AtCHS, AtCHI, AtDFR, AtLDOX, and AtUF3GT. These findings indicate that RsDofs are critical to plant development and stress responses.
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spelling doaj-art-250c95414d854a0292fe465cf1fe36362025-02-09T12:32:58ZengNature PortfolioScientific Reports2045-23222025-02-0115112010.1038/s41598-025-88308-6Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesisCaiming Gou0Jia Li1Bo Chen2Guoting Cheng3Zhangfei Zheng4Hua Peng5Ahmed H. El-Sappah6School of Agriculture, Forestry and Food Engineering, Yibin UniversitySchool of Agriculture, Forestry and Food Engineering, Yibin UniversitySchool of Agriculture, Forestry and Food Engineering, Yibin UniversityShaanxi Key Laboratory of Research and Utilization of Resource Plants On the Loess Plateau, College of Life Sciences, ‘Yan’an UniversityCollege of Agriculture, Fujian Agriculture and Forestry UniversityResearch Center for Tourism Agriculture Development, Sichuan Tourism CollegeSchool of Agriculture, Forestry and Food Engineering, Yibin UniversityAbstract Carmine radish (Raphanus sativus L.) is cultivated in Fuling, Chongqing, for its red color. Dof-TFs are critical in regulating plant growth, development, stress responses, and signal transduction.This work comprehensively examined the structure, evolution, and expression of the carmine radish Dof gene and its behavior under cadmium (Cd) stress. The radish genome has 59 RsDofs, which are divided into nine clusters (A: 8, B1: 10, B2: 10, C1: 3, C2.1: 5, C2.2: 4, C3: 11, D1: 4, and D2: 4). Phylogenetic tree analysis revealed significant Dof gene family resemblance between Arabidopsis thaliana and Brassica napus. Perhaps segment duplication resulted in RsDof gene family expansion. Cd stress-induced RsDof expression patterns were studied using an RNA-seq atlas and qRT-PCR. The majority of RsDofs were tissue-specific and Cd-sensitive. The involvement of RsDof genes in Cd stress response and anthocyanin synthesis was verified using qRT-PCR. RsDof33 is involved in Cd stress response and anthocyanin synthesis. A. thaliana overexpressed the recombinant fusion protein RsDof33-GFP, which was localized to the nucleus, resulting in fewer rosette leaves, delayed flowering, and higher anthocyanin concentration. RsDof33-expressing plants had significantly higher transcript levels of the auxin biosynthetic genes YUCCA (AtYUC2), auxin efflux carrier (AtPIN4), and AtKNAT2, which are involved in leaf shape development, as well as AtPAL, AtCHS, AtCHI, AtDFR, AtLDOX, and AtUF3GT. These findings indicate that RsDofs are critical to plant development and stress responses.https://doi.org/10.1038/s41598-025-88308-6Raphanus sativus L.Dof transcription factorsAnthocyanin biosynthesisExpression profile: OERsDof33
spellingShingle Caiming Gou
Jia Li
Bo Chen
Guoting Cheng
Zhangfei Zheng
Hua Peng
Ahmed H. El-Sappah
Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
Scientific Reports
Raphanus sativus L.
Dof transcription factors
Anthocyanin biosynthesis
Expression profile: OERsDof33
title Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
title_full Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
title_fullStr Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
title_full_unstemmed Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
title_short Genome wide identification of Dof transcription factors in Carmine radish reveals RsDof33 role in cadmium stress and anthocyanin biosynthesis
title_sort genome wide identification of dof transcription factors in carmine radish reveals rsdof33 role in cadmium stress and anthocyanin biosynthesis
topic Raphanus sativus L.
Dof transcription factors
Anthocyanin biosynthesis
Expression profile: OERsDof33
url https://doi.org/10.1038/s41598-025-88308-6
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