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Differential gene expression between the vigorous and dwarf litchi cultivars based on RNA-Seq transcriptome analysis

文献类型： 外文期刊

作者： Hu, Fuchu 1 ; Chen, Zhe; Zhao, Jietang 1 ; Wang, Xianghe; Su, Wenbing 1 ; Qin, Yonghua 1 ; Hu, Guibing 1 ;

作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Key Lab Biol & Genet Improvement Hort Crops South, Minist Agr,Coll Hort, Guangzhou, Guangdong, Peoples R China

2.Hainan Acad Agr Sci, Key Lab Trop Fruit Tree Biol Hainan Prov, Inst Trop Fruit Trees, Haikou, Haina

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2018 年 13 卷 12 期

页码：

收录情况： SCI

摘要： Litchi (Litchi chinesis Sonn.) is the most economically significant member of Sapindaceae family, especially in sub-tropical regions. However, its tall tree body often brings many inconveniences to production management. In order to modify the tree size or growth for productivity optimization and simplifying management, it is urgent to reveal the dwarf mechanism of litchi for dwarfing rootstocks or cultivar breeding. However, to date, the mechanisms on litchi dwarfism is still poor known. In the present study, transcriptome profiling were performed on L. chinensis cv. 'Feizixiao' (FZX, vigorous cultivar) and 'Ziniangx' (ZNX, dwarf cultivar). A total of 55,810 unigenes were obtained, and 9,190 unigenes were differentially expressed between vigorous and dwarf litchi samples. Gene functional enrichment analysis indicated that the differentially expressed unigenes (DEGs) were related to phytohormone metabolism and signal transduction, and energy metabolism pathways. In particular, GA2ox were only up-regulated in ZNX samples, indicating GA might play an important role in regulating huge difference between vigorous and dwarf litchi cultivars. In addition, the 35S::LcGA2ox transgenic tobacco plants were dwarf and had smaller leaves or branches than wild type plants. Our study provided a series of candidate genes to reveal the mechanism of litchi dwarf.

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