文献类型：期刊文献

英文题名：Identification and Functional Prediction of CircRNAs in Leaves of F1 Hybrid Poplars with Different Growth Potential and Their Parents

作者：Zhang, Weixi[1,2] Yuan, Zhengsai[1,2] Zhang, Jing[1,2] Su, Xiaohua[1,2,3] Huang, Qinjun[1,2] Liu, Qi[1,2] Ding, Changjun[1,2]

第一作者：张伟溪

通信作者：Ding, CJ[1];Ding, CJ[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Breeding & Cultivat State Fores, Beijing 100091, Peoples R China;[3]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

年份：2023

卷号：24

期号：3

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;Scopus(收录号：2-s2.0-85147892814);WOS:【SCI-EXPANDED(收录号:WOS:000930757500001)】；

基金：This work was supported by grants from the National Natural Science Foundation of China (grant number 31870662), the National Key Research and Development Program of China (grant number 2021YFD2201205), and the Basic Research Fund of CAF (grant number CAFYBB2020SZ002).

语种：英文

外文关键词：Populus deltoides; CircRNA; heterosis; non-additive expression; single-parent expression; differential expression; WGCNA

摘要：Circular RNAs (CircRNAs) regulate plant growth and development; however, their role in poplar heterosis is unclear. We identified 3722 circRNAs in poplar leaves, most of which were intergenic (57.2%) and exonic (40.2%). The expression of circRNAs in F1 hybrids with high growth potential was higher than that in those with low growth potential. Non-additive expression of circRNAs and single-parent expression of circRNAs (SPE-circRNAs) might regulate poplar heterosis through microRNA sponging and protein translation, respectively. DECs among F1 hybrids with different growth potentials might regulate the growth potential of poplar via microRNA sponging. Correlation analysis between circRNA expression and its parent gene expression showed that SPE-M circRNA (circRNAs expressed by male parent only) might regulate poplar heterosis by inhibiting parent gene expression, while other circRNAs might regulate poplar heterosis by enhancing parent gene expression. Weighted correlation network analysis of gene/circRNA expression showed that circRNAs mainly regulate poplar heterosis via carbohydrate metabolism, amino acid metabolism, energy metabolism, and material transport. In addition, we identified seven circRNAs that positively or negatively regulate poplar heterosis. Thus, non-additively expressed circRNAs and SPE circRNAs are involved in regulating poplar heterosis, and DECs among F1 hybrids with different growth potentials were involved in regulating poplar growth potential.