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Construction and analysis of the tapping panel dryness-related lncRNA/ circRNA-miRNA-mRNA ceRNA network in latex of Hevea brasiliensis

文献类型: 外文期刊

作者: Liu, Hui 1 ; Yuan, Kun 1 ; Hu, Yiyu 1 ; Wang, Shuai 1 ; He, Qiguang 1 ; Feng, Chengtian 1 ; Liu, Jinping 2 ; Wang, Zhenhui 1 ;

作者机构: 1.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Rubber Tree, State Key Lab Incubat Base Cultivat & Physiol Trop, Rubber Res Inst,Minist Agr & Rural Affairs, Haikou 571101, Peoples R China

2.Hainan Univ, Sch Trop Agr & Forestry, Haikou 570228, Peoples R China

关键词: Circular RNA; Competing endogenous RNA; Hevea brasiliensis; Long noncoding RNA; microRNA; Tapping panel dryness; Transcriptome

期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:6.5; 五年影响因子:6.4 )

ISSN: 0981-9428

年卷期: 2023 年 205 卷

页码:

收录情况: SCI

摘要: Tapping panel dryness (TPD) results in a severe reduction in latex yield in Hevea brasiliensis. However, the molecular regulatory mechanisms of TPD occurrence are still largely unclear. In this study, whole-transcriptome sequencing was carried out on latex from TPD and healthy trees. In total, 7078 long noncoding RNAs (lncRNAs), 3077 circular RNAs (circRNAs), 4956 miRNAs, and 25041 mRNAs were identified in latex, among which 435 lncRNAs, 68 circRNAs, 320 miRNAs, and 1574 mRNAs were differentially expressed in the latex of TPD trees. GO and KEGG analyses indicated that plant hormone signal transduction, MAPK signaling pathway, and ubiquitinmediated proteolysis were the key pathways associated with TPD onset. Phytohormone profiling revealed significant changes in the contents of 28 hormonal compounds, among which ACC, ABA, IAA, GA, and JA contents were increased, while SA content was reduced in TPD latex, suggesting that hormone homeostasis is disrupted in TPD trees. Furthermore, we constructed a TPD-related competitive endogenous RNA (ceRNA) regulatory network of lncRNA/circRNA-miRNA-mRNA with 561 edges and 434 nodes (188 lncRNAs, 5 circRNAs, 191 miRNAs, and 50 mRNAs) and identified two hub lncRNAs (MSTRG.11908.1 and MSTRG.8791.1) and four hub miRNAs (hbr-miR156, miR156-x, miRf10477-y, and novel-m0452-3p). Notably, the lncRNA-miR156/157-SPL module containing three hubs probably plays a crucial role in TPD onset. The expression of network hubs and the lncRNA-miR156/157-SPL module were further validated by qRT-PCR. Our results reveal the TPD-associated ceRNA regulatory network of lncRNA/circRNA-miRNA-mRNA in latex and lay a foundation for further investigation of molecular regulatory mechanisms for TPD onset in H. brasiliensis.

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