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当前位置: 首页 > 文章 > BpMADS12 gene role in lignin biosynthesis of Betula platyphylla Suk by transcriptome analysis 林业研究(英文版) 2016,27 (5)
Position: Home > Articles > BpMADS12 gene role in lignin biosynthesis of Betula platyphylla Suk by transcriptome analysis Journal of Forestry Research 2016,27 (5)

BpMADS12 gene role in lignin biosynthesis of Betula platyphylla Suk by transcriptome analysis

作  者：
Huiyu Li;Yang Yang;Zijia Wang;Xiaohong Guo;Feifei Liu;Jing Jiang;Guifeng Li
单  位：
Northeast Forestry University;Heilongjiang Bayi Agricultural University;Northeast Forestry Universit
关键词：
Betula platyphylla;BpMADS12;Lignin biosynthesis;Transcriptome analysis;MADS-BOX GENES;ROOT DEVELOPMENT;DOWN-REGULATION;RICE;IDENTIFICATION;REVEALS;METABOLISM;ABC
摘  要：
MADS-box transcription factors show highly diverse regulatory functions in a wide variety of organisms. In this study, we characterized a MADS-box gene (BpMADS12) from the white birch (Betula platyphylla Suk). This gene is a member of the suppressor of overexpression of CO 1/ tomato MADS 3 class of MADS-box genes. We generated lines overexpressing BpMADS12 and found that these had higher levels of lignin compared to that observed in nontransgenic lines. Transcriptome analysis revealed numerous changes in gene expression patterns. In total, 8794 differentially expressed genes were identified, including 5006 upregulated unigenes and 3788 downregulated unigenes in BpMADS-overexpression lines. Differentially expressed genes involved in the pathways for lignin and brassinosteroid biosynthesis were significantly enriched and may have contributed to phenotypic changes. The results from a quantitative RT-PCR analysis were consistent those obtained with the transcriptome analysis. Our transcriptome analysis, in combination with measurement of lignin level, indicated that BpMADS12 promotes lignin synthesis through regulation of key enzymes in response to brassinosteroid signaling. These results suggest that this MADS-box protein is crucial to all subsequent structural events and provide a good foundation for studies aiming to elucidate the developmental mechanisms underlying formation of wood.

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