文献类型： 外文期刊
作者： Zhan, Ni 1 ; Shang, Xiuhua 1 ; Wang, Zhen 3 ; Xie, Yaojian 1 ; Liu, Guo 1 ; Wu, Zhihua 1 ;
作者机构： 1.Chinese Acad Forestry, China Eucalypt Res Ctr, Zhanjiang 524022, Guangdong, Peoples R China
2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Lingnan Inst Survey & Design Co Ltd, Guangzhou 510000, Guangdong, Peoples R China
关键词： Eucalyptus; Synthesis of cellulose; Transcriptome analysis; Genetic transformation
期刊名称：GENE （ 影响因子：3.913； 五年影响因子：3.48 ）
ISSN： 0378-1119
年卷期： 2022 年 824 卷
页码：
收录情况： SCI
摘要： Eucalyptus (including Eucalyptus grandis) is an excellent wood forest tree species that provides a large number of plant fiber raw materials for the paper and timber industries. Cellulose, an essential structural component in plant cell walls, is a renewable biomass resource that plays a very important role in nature. There is still a lack of research on the role of gene regulation in cellulose synthesis. To study the genes of cellulose synthesis, the wood chemical indexes of Eucalyptus grandis were analyzed by taking three different parts from the main stem of Eucalyptus grandis as raw materials. The results showed that the cellulose content in the middle of the trunk was significantly higher than that at the chest diameter and at the upper part of the trunk. A total of 296 differentially expressed genes (DEGs) were obtained from the three site by transcriptome, and 19 key candidate genes were related to the synthesis of cellulose in Eucalyptus grandis. EgrEXP1 and EgrHEX4 were overexpressed in 84 K poplar, the content of cellulose and lignin in genetically modified plants was significantly higher than that of wild type 84 K poplar. Also, the average plant height and average root count were significantly higher than those of control plants, and the average diameter of the middle and stem bases were significantly larger than those of control plants. In this study, the genes related to cellulose synthesis in Eucalyptus grandis are studied, which serve as a strong foundation for understanding the molecular regulation of cellulose synthesis in plants.
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