Identification and expression analysis of the bZIP and WRKY gene families during anthocyanins biosynthesis in Lagerstroemia indica L

Cuihua Gu1, Sidan Hong1, Jie Wang2,3,4, Linxue Shang1, Guozhe Zhang1, Yu Zhao1, Qingqing Ma1, Dandan Ma5
1College of Landscape and Architecture, Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, Key Laboratory of National Forestry and Grassland Administration on Germplasm Innovation and Utilization for Southern Garden Plants, Zhejiang A & F University, Hangzhou, China
2Kunpeng Institute of Modern Agriculture at Foshan, Foshan, China
3Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
4College of Science, Health, Engineering and Education, Food Futures Institute, Murdoch University, Murdoch, Australia
5Jiyang College of Zhejiang Agriculture & Forestry University, Shaoxing, China

Tóm tắt

Lagerstroemia indica is a summer ornamental flowering tree, belonging to the Lythraceae family. Its flower color is a key ornamental characteristic. Recent research indicates that WRKY and bZIP transcription factors play important role in flower color formation. Based on the transcriptome database of L. indica, this study identified 85 LibZIPs and 61 LiWRKYs from the L. indica transcriptome database and analyzed their expression profiles using qRT-PCR. Phylogenetic analysis divided LibZIPs into 11 subfamilies and LiWRKYs into six subfamilies. Nine LibZIPs and four LiWRKYs were found to have higher expression in colored samples compared to the white sample. LibZIP31, LibZIP65, LibZIP34, LiWRKY16, LiWRKY25, LiWRKY40, and LiWRKY67 may play important roles in flower color formation in L. indica. These results provide valuable information for further functional analysis of the bZIP and WRKY genes families in L. indica and help clarify their roles in flower color formation.

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