Genome-wide identification of lncRNAs, miRNAs, mRNAs and their regulatory networks involved in tapping panel dryness in rubber tree (Hevea brasiliensis)
文献类型： 外文期刊
作者： Liu, Hui 1 ; Hu, Yiyu 1 ; Yuan, Kun 1 ; Feng, Chengtian 1 ; He, Qiguang 1 ; Sun, Liang 1 ; Wang, Zhenhui 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Rubber Res Inst, Hainan Prov Key Lab Trop Crops Cultivat & Physiol, Key Lab Biol & Genet Resources Rubber Tree,Minist, Haikou 571101, Hainan, Peoples R China
关键词： long noncoding RNA; microRNA; rubber biosynthesis; rubber tree; tapping panel dryness; transcriptome
期刊名称：TREE PHYSIOLOGY （ 影响因子：4.561； 五年影响因子：5.121 ）
ISSN： 0829-318X
年卷期：
页码：
收录情况： SCI
摘要： Noncoding RNAs (ncRNAs) play pivotal roles in various biological processes in plants. However, the role of ncRNAs in tapping panel dryness (TPD) of rubber tree (Hevea brasiliensis Muell. Arg.) is largely unknown. Here, the whole transcriptome analyses of bark tissues from healthy and TPD trees were performed to identify differentially expressed long ncRNAs (DELs), microRNAs/miRNAs (DEMs), genes (DEGs) and their regulatory networks involved in TPD. A total of 263 DELs, 174 DEMs and 1574 DEGs were identified in the bark of TPD tree compared with that of healthy tree. Kyoto Encyclopedia of Genes and Genomes analysis revealed that most of the DEGs and targets of DELs and DEMs were mainly enriched in metabolic pathways, biosynthesis of secondary metabolites and plant hormone signal transduction. Additionally, the majority of DEGs and DELs related to rubber biosynthesis were downregulated in TPD trees. Furthermore, 98 DEGs and 44 DELs were targeted by 54 DEMs, 190 DEGs were identified as putative targets of 56 DELs, and 2 and 44 DELs were predicted as precursors and endogenous target mimics of 2 and 6 DEMs, respectively. Based on these, the DEL-DEM-DEG regulatory network involved in TPD was constructed, and 13 hub DELs, 3 hub DEMs and 2 hub DEGs were identified. The results provide novel insights into the regulatory roles of ncRNAs underlying TPD and lay a foundation for future functional characterization of long ncRNAs, miRNAs and genes involved in TPD in rubber tree.
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