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Hu XG, Zhuang H, Lin E, Borah P, Du M, Gao S, Wang T, Tong Z, Huang H. Full-Length Transcriptome Sequencing and Comparative Transcriptomic Analyses Provide Comprehensive Insight Into Molecular Mechanisms of Cellulose and Lignin Biosynthesis in Cunninghamia lanceolata. FRONTIERS IN PLANT SCIENCE 2022; 13:883720. [PMID: 35712576 PMCID: PMC9194830 DOI: 10.3389/fpls.2022.883720] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 05/06/2022] [Indexed: 05/31/2023]
Abstract
Cunninghamia lanceolata is an essential timber species that provide 20%-30% raw materials for China's timber industry. Although a few transcriptomes have been published in C. lanceolata, full-length mRNA transcripts and regulatory mechanisms behind the cellulose and lignin biosynthesis have not been thoroughly investigated. Here, PacBio Iso-seq and RNA-seq analyses were adapted to identify the full-length and differentially expressed transcripts along a developmental gradient from apex to base of C. lanceolata shoots. A total of 48,846 high-quality full-length transcripts were obtained, of which 88.0% are completed transcriptome based on benchmarking universal single-copy orthologs (BUSCO) assessment. Along stem developmental gradient, 18,714 differentially expressed genes (DEGs) were detected. Further, 28 and 125 DEGs were identified as enzyme-coding genes of cellulose and lignin biosynthesis, respectively. Moreover, 57 transcription factors (TFs), including MYB and NAC, were identified to be involved in the regulatory network of cellulose and lignin biosynthesis through weighted gene co-expression network analysis (WGCNA). These TFs are composed of a comparable regulatory network of secondary cell wall formation in angiosperms, revealing a similar mechanism may exist in gymnosperms. Further, through qRT-PCR, we also investigated eight specific TFs involved in compression wood formation. Our findings provide a comprehensive and valuable source for molecular genetics breeding of C. lanceolata and will be beneficial for molecular-assisted selection.
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Affiliation(s)
- Xian-Ge Hu
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Hebi Zhuang
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Erpei Lin
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Priyanka Borah
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Mingqiu Du
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Shiya Gao
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Tongli Wang
- Department of Forest and Conservation Sciences, Faculty of Forestry, The University of British Columbia, Vancouver, BC, Canada
| | - Zaikang Tong
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
| | - Huahong Huang
- The State Key Laboratory of Subtropical Silviculture, Institute of Biotechnology, College of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, China
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Zhao Y, Wang XQ. VvMYB1 potentially affects VvTOR gene expression by regulating VvTOR promoter and participates in glucose accumulation. JOURNAL OF PLANT PHYSIOLOGY 2022; 272:153668. [PMID: 35306297 DOI: 10.1016/j.jplph.2022.153668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 03/12/2022] [Accepted: 03/12/2022] [Indexed: 06/14/2023]
Abstract
MYB (v-myb avian myeloblastosis viral oncogene homolog) transcription factors make up one of the largest protein families in plants. The TOR (target of rapamycin) signaling network plays a pivotal role in sugar metabolism and plant growth. In this article, we utilized grape (Vitis vinifera) calli to explore the relationship between VvMYB1 and VvTOR. By using yeast one-hybrid and dual-luciferase reporter system, we speculated that there may be other proteins that help VvMYB1 and VvTOR promoter bond in grape calli, and the interaction action sites were located between the VvTOR 400-bp promoter fragment and the 1200-bp promoter fragment. The subcellular localization results suggest that VvMYB1 is found in the nucleus. Moreover, the expression level of VvTOR increased in the transgenic calli with overexpression of VvMYB1. These findings provide further evidence that VvMYB1 regulates VvTOR expression. We also found that overexpression of VvMYB1 increased glucose accumulation and affected expression of sugar-related genes. Our results suggest that there is a crosstalk between VvMYB1, VvTOR, and glucose accumulation.
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Affiliation(s)
- Ying Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China.
| | - Xiu-Qin Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China.
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