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Open AccessArticle

Transcriptome-Wide Identification, Evolutionary Analysis, and GA Stress Response of the GRAS Gene Family in Panax ginseng C. A. Meyer

by Nan Wang 1,2,†, Kangyu Wang 1,2,†, Shaokun Li 1,2, Yang Jiang 1,2, Li Li 1,2, Mingzhu Zhao 1,2, Yue Jiang 1,2, Lei Zhu 1,2, Yanfang Wang 2,3, Yingjie Su 1, Yi Wang 1,2,* and Meiping Zhang 1,2,*
1
College of Life Science, Jilin Agricultural University, Changchun 130118, Jilin, China
2
Research Center Ginseng Genetic Resources Development and Utilization, Changchun 130118, Jilin, China
3
College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, Jilin, China
*
Authors to whom correspondence should be addressed.
These two authors contributed equally to this work.
Plants 2020, 9(2), 190; https://doi.org/10.3390/plants9020190
Received: 10 December 2019 / Revised: 22 January 2020 / Accepted: 24 January 2020 / Published: 4 February 2020
(This article belongs to the Special Issue Plant Molecular Phylogenetics and Evolutionary Genomics)
GRAS transcription factors are a kind of plant-specific transcription factor that have been found in a variety of plants. According to previous studies, GRAS proteins are widely involved in the physiological processes of plant signal transduction, stress, growth and development. The Jilin ginseng (Panax ginseng C.A. Meyer) is a heterogeneous tetraploid perennial herb of the Araliaceae family, ginseng genus. Important information regarding the GRAS transcription factors has not been reported in ginseng. In this study, 59 Panax ginseng GRAS (PgGRAS) genes were obtained from the Jilin ginseng transcriptome data and divided into 13 sub-families according to the classification of Arabidopsis thaliana. Through systematic evolution, structural variation, function and gene expression analysis, we further reveal GRAS’s potential function in plant growth processes and its stress response. The expression of PgGRAS genes responding to gibberellin acids (GAs) suggests that these genes could be activated after application concentration of GA. The qPCR analysis result shows that four PgGRAS genes belonging to the DELLA sub-family potentially have important roles in the GA stress response of ginseng hairy roots. This study provides not only a preliminary exploration of the potential functions of the GRAS genes in ginseng, but also valuable data for further exploration of the candidate PgGRAS genes of GA signaling in Jilin ginseng, especially their roles in ginseng hairy root development and GA stress response. View Full-Text
Keywords: Panax ginseng; GRAS transcription factor; DELLA sub-family; Evolutionary analysis; Gibberellin acid (GA); Stress response Panax ginseng; GRAS transcription factor; DELLA sub-family; Evolutionary analysis; Gibberellin acid (GA); Stress response
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Wang, N.; Wang, K.; Li, S.; Jiang, Y.; Li, L.; Zhao, M.; Jiang, Y.; Zhu, L.; Wang, Y.; Su, Y.; Wang, Y.; Zhang, M. Transcriptome-Wide Identification, Evolutionary Analysis, and GA Stress Response of the GRAS Gene Family in Panax ginseng C. A. Meyer. Plants 2020, 9, 190.

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