Transcriptome comparison of different ploidy reveals the mechanism of photosynthetic efficiency superiority of triploid poplar

文献类型： 外文期刊

第一作者： Wu, Wenqi

作者： Wu, Wenqi;Du, Kang;Kang, Xiangyang;Liao, Ting;Du, Kang;Kang, Xiangyang;Du, Kang;Kang, Xiangyang;Wei, Hairong

作者机构：

关键词： Triploid poplar; Net photosynthetic rate; Growth-regulating factors; Co-expression network; Leaf development

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2021 年 113 卷 4 期

页码：

收录情况： SCI

摘要： Triploid poplars have obvious growth advantages, especially in leaf development and photosynthetic characteristics, but the molecular mechanism has not been revealed yet. In order to better understand the regulation mechanisms of leaf and chlorophyll development in the triploid poplars, we combined the leaf phenotypic data with the transcriptomic data of the 5th, 10th, and 25th leaves from triploid and diploid poplars, using weighted gene co-expression network analysis (WGCNA), and revealed that PpnGRF5-1 had a strong correlation with leaf development and net photosynthetic rate (Pn). PpnGRF5-1 overexpression transgenic plants showed that the leaf area, Pn, and chlorophyll concentration were significantly increased. Transcriptomic data analysis of the third leaf from PpnGRF5-1 overexpression transgenic plants showed that PpnGRF5-1 could up-regulate the expression levels of chlorophyll synthesis genes and down-regulate the transcription of chlorophyll degradation enzymes. Overall, our studies have greatly expanded our understanding of the molecular mechanisms regulating triploid growth dominance.

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