文献类型：期刊文献

英文题名：Molecular and Metabolic Insights into Anthocyanin Biosynthesis for Leaf Color Change in Chokecherry (Padus virginiana)

作者：Li, Xiang[1] Li, Yan[1] Zhao, Minghui[1] Hu, Yanbo[1] Meng, Fanjuan[1] Song, Xingshun[1] Tigabu, Mulualem[2] Chiang, Vincent L.[1,3] Sederoff, Ronald[3] Ma, Wenjun[4] Zhao, Xiyang[1,5]

第一作者：Li, Xiang

通信作者：Zhao, XY[1];Ma, WJ[2];Zhao, XY[3]

机构：[1]Northeast Forestry Univ, Sch Forestry, State Key Lab Tree Genet & Breeding, Harbin 150040, Peoples R China;[2]Swedish Univ Agr Sci, Southern Swedish Forest Res Ctr, S-23053 Alnarp, Sweden;[3]North Carolina State Univ, Dept Forestry & Environm Resources, Forest Biotechnol Grp, Raleigh, NC 27695 USA;[4]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat State Forestry A, Beijing 100091, Peoples R China;[5]Jilin Agr Univ, Coll Forestry & Grassland, Changchun 130118, Peoples R China

年份：2021

卷号：22

期号：19

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000708064300001)】；

基金：This work was funded by the Fundamental Research Funds for the Central Universities (2572020DR01) and Heilongjiang Touyan Innovation Team Program (Tree Genetics and Breeding Innovation Team).

语种：英文

外文关键词：Padus virginiana; leaf color; anthocyanin biosynthesis; transcriptomics; metabolomic

摘要：Chokecherry (Padus virginiana L.) is an important landscaping tree with high ornamental value because of its colorful purplish-red leaves (PRL). The quantifications of anthocyanins and the mechanisms of leaf color change in this species remain unknown. The potential biosynthetic and regulatory mechanisms and the accumulation patterns of anthocyanins in P. virginiana that determine three leaf colors were investigated by combined analysis of the transcriptome and the metabolome. The difference of chlorophyll, carotenoid and anthocyanin content correlated with the formation of P. virginiana leaf color. Using enrichment and correlation network analysis, we found that anthocyanin accumulation differed in different colored leaves and that the accumulation of malvidin 3-O-glucoside (violet) and pelargonidin 3-O-glucoside (orange-red) significantly correlated with the leaf color change from green to purple-red. The flavonoid biosynthesis genes (PAL, CHS and CHI) and their transcriptional regulators (MYB, HD-Zip and bHLH) exhibited specific increased expression during the purple-red periods. Two genes encoding enzymes in the anthocyanin biosynthetic pathway, UDP glucose-flavonoid 3-O-glucosyl-transferase (UFGT) and anthocyanidin 3-O-glucosyltransferase (BZ1), seem to be critical for suppressing the formation of the aforesaid anthocyanins. In PRL, the expression of the genes encoding for UGFT and BZ1 enzymes was substantially higher than in leaves of other colors and may be related with the purple-red color change. These results may facilitate genetic modification or selection for further improvement in ornamental qualities of P. virginiana.