Overexpression of the Peach Transcription Factor Early Bud-Break 1 Leads to More Branches in Poplar
文献类型： 外文期刊
作者： Zhao, Xuehui 1 ; Wen, Binbin 1 ; Li, Chen 1 ; Tan, Qiuping 1 ; Liu, Li 4 ; Chen, Xiude 1 ; Li, Ling 1 ; Fu, Xiling 1 ;
作者机构： 1.Shandong Agr Univ, Coll Hort Sci & Engn, Tai An, Peoples R China
2.Shandong Agr Univ, State Key Lab Crop Biol, Tai An, Peoples R China
3.Shandong Collaborat Innovat Ctr Fruit & Vegetable, Tai An, Peoples R China
4.Shandong Acad Agr Sci, Shandong Acad Grape, Jinan, Peoples R China
关键词： PpEBB1; shoot branching; sugars; amino acids; brassinosteroids; light response
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）
ISSN： 1664-462X
年卷期： 2021 年 12 卷
页码：
收录情况： SCI
摘要： Shoot branching is an important adaptive trait that determines plant architecture. In a previous study, the Early bud-break 1 (EBB1) gene in peach (Prunus persica var. nectarina) cultivar Zhongyou 4 was transformed into poplar (Populus trichocarpa). PpEBB1-oe poplar showed a more branched phenotype. To understand the potential mechanisms underlying the EBB1-mediated branching, transcriptomic and proteomics analyses were used. The results showed that a large number of differentially expressed genes (DEGs)/differentially expressed proteins (DEPs) associated with light response, sugars, brassinosteroids (BR), and nitrogen metabolism were significantly enriched in PpEBB1-oe poplar. In addition, contents of sugars, BR, and amino acids were measured. Results showed that PpEBB1 significantly promoted the accumulation of fructose, glucose, sucrose, trehalose, and starch. Contents of brassinolide (BL), castasterone (CS), and 6-deoxocathasterone (6-deoxoCS) were all significantly changed with overexpressing PpEBB1. Various types of amino acids were measured and four of them were significantly improved in PpEBB1-oe poplar, including aspartic acid (Asp), arginine (Arg), cysteine (Cys), and tryptohpan (Trp). Taken together, shoot branching is a process controlled by a complex regulatory network, and PpEBB1 may play important roles in this process through the coordinating multiple metabolic pathways involved in shoot branching, including light response, phytohormones, sugars, and nitrogen.
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