Identification of Carthamus tinctorius NAC gene family and analysis of drought stress response.
10.19540/j.cnki.cjcmm.20220514.104
- Author:
Peng ZHAN
1
;
Zu-Chang ZHONG
1
;
Ni-Yan XIANG
1
;
Rui QIN
1
;
Xiong-Bo JIANG
2
;
Hong LIU
1
Author Information
1. Hubei Provincial Key Laboratory for Protection and Application of Special Plant Germplasm in Wuling Area of China, Key Laboratory of State Ethnic Affairs Commission for Biological Technology, College of Life Sciences, South-Central Minzu University Wuhan 430074, China.
2. Hubei Ecology Polytechnic College Wuhan 430200, China.
- Publication Type:Journal Article
- Keywords:
Carthamus tinctorius;
NAC gene family;
drought stress;
transcription level
- MeSH:
Droughts;
Carthamus tinctorius/genetics*;
Gene Expression Regulation, Plant;
Plant Proteins/metabolism*;
Phylogeny;
Transcription Factors/metabolism*;
Stress, Physiological/genetics*;
Multigene Family
- From:
China Journal of Chinese Materia Medica
2022;47(20):5520-5529
- CountryChina
- Language:Chinese
-
Abstract:
The NAC(NAM/ATAF/CUC) transcription factors are members of the largest transcriptional gene family in plants and play an essential role in the response of plants to drought stress. To identify the number and function of the NAC gene family in Carthamus tinctorius, the present study adopted bioinformatics methods to identify NAC gene family members based on the whole genome data of C. tinctorius, and analyzed their physicochemical properties, chromosomal location, phylogenetic relationship, gene structure, conserved domain, and conserved motif. Meanwhile, the real-time fluorescence-based quantitative RT-PCR(qRT-PCR) was used to analyze the transcription level of four NAC genes under drought stress in different time. The results showed that C. tinctorius contained 87 NAC genes unevenly distributed on 11 chromosomes, while no NAC gene was found on chromosome 12. The encoded proteins were 103-974 amino acids and the number of CDS ranged from 3 to 9. According to the phylogenetic relationships, 87 NAC genes were clustered into17 subfamilies. The analysis of conserved domains and motifs revealed that most of the genes contained five conserved subdomains, A-E and motif2 was the most conserved among NAC genes. The expression pattern analysis showed that the transcription levels of four NAC genes related to drought resistance were all up-regulated after drought stress treatment for different time, suggesting that these four NAC genes may be related to drought resistance of C. tinctorius. This study is expected to provide a theoretical basis for further functional analysis of NAC transcription factors in C. tinctorius and references for the cultivation of drought-tolerant C. tinctorius varieties.
