1. Transcriptome analysis of biological pathways associated with heterosis in Chinese cabbage.
- Author
-
Kong, Xiaoping, Chen, Lin, Wei, Tingzhen, Zhou, Hongwei, Bai, Chengfang, Yan, Xiangping, Miao, Zenjian, Xie, Jianming, and Zhang, Lugang
- Subjects
- *
CHINESE cabbage , *HETEROSIS , *PLANT hormones , *ABSCISIC acid , *GENE expression , *TRANSCRIPTION factors , *AUXIN - Abstract
Chinese cabbage is an important vegetable in Asia, and high-yielding hybrids are needed to cope with the growing demand. A comparative transcriptome profiling was conducted to reveal the differentially expressed genes (DEGs) associated with heterosis in two hybrids relative to their parents. Our data suggests that heterosis is underlined by a significant upregulation of gene expression. High expression of DEGs in glycolysis and photosynthesis pathways in hybrids depicted their relation with growth and hybrid vigor. Besides, DEGs related to auxin, abscisic acid, ethylene and gibberellin were identified, implying that these hormones may boost the mechanisms of growth and developmental processes in the hybrids. Furthermore, transcription factors, including bHLH, ERF, MYB and WRKY were predicted to regulate downstream genes linked to hybrid vigor. Collectively, the present study will be helpful for a better understanding of the regulation mechanisms of heterosis to aid cabbage yield improvement. • Transcriptional mechanisms of heterosis in Chinese cabbage was studied. • Heterosis is underlined by a significant upregulation of gene expression. • Heterosis is mainly associated with non-additive expression. • Glycolysis and photosynthesis pathways were altered in hybrids. • Phytohormones related genes play crucial role in heterosis. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF