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Full-Length Transcriptome and the Identification of lncRNAs Involved in Salicylic Acid-Induced Flowering in Duckweed (Lemna gibba)

文献类型： 外文期刊

作者： Fu, Lili 1 ; Tan, Deguan 1 ; Sun, Xuepiao 1 ; Ding, Zehong 1 ; Zhang, Jiaming 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Bioenergy Ctr, MOA Key Lab Trop Crops Biol & Genet Resources, Xueyuan Rd 4, Haikou 571101, Peoples R China

2.Chinese Acad Trop Agr Sci, Hainan Acad Trop Agr Resource, Xueyuan Rd 4, Haikou 571101, Peoples R China

3.Chinese Acad Trop Agr Sci, Sanya Res Inst, Gannong Ave, Sanya 572025, Peoples R China

关键词： salicylic acid; flowering; long noncoding RNAs; transcriptome analysis; Lemna gibba

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 10 期

页码：

收录情况： SCI

摘要： Long noncoding RNAs (lncRNAs) are crucial components in regulating the flowering of plants. However, the regulatory mechanism of lncRNAs underlying salicylic acid (SA)-induced flowering remains unknown in duckweed (e.g., Lemna gibba L.), an aquatic model species with significant potential applications in agriculture and industry. In this work, L. gibba plants were collected at four crucial time points during SA-induced flowering and subjected to PacBio full-length sequencing and strand-specific RNA sequencing. A total of 474 lncRNAs were identified, of which 31 were differentially expressed and involved in SA-induced flowering. A trans-regulatory analysis found that these lncRNAs displayed temporal-specific expression trends and mainly participated in stress metabolism, photosynthesis, jasmonate metabolism, and transport under SA treatment. Five lncRNAs were determined to act as targets of miRNAs that played critical roles in regulating flowering. In addition, fifteen lncRNAs showed co-expression with flowering-related genes, and lncRNA03 and lncRNA25 were identified as key players involved in flowering via lncRNA-miRNA-mRNA interactions. Finally, twelve lncRNAs related to trans-regulation, miRNA targets, or co-expression with flowering-related genes were verified by qRT-PCR. These findings deepen our understanding of lncRNAs in SA-induced flowering in duckweed and provide valuable resources for in-depth functional analysis in the future.

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