Using Isoform Sequencing for De Novo Transcriptome Sequencing and the Identification of Genes Related to Drought Tolerance and Agronomic Traits in Tall Fescue (Festuca arundinacea Schreb.)
文献类型： 外文期刊
作者： Yang, Chunyan 1 ; Zhong, Li 2 ; Ou, Erling 2 ; Tian, Fang 2 ; Yao, Mei 2 ; Chen, Ming 5 ; Yan, Xu 1 ; Li, Yingzheng 1 ; Li, Xiaofeng 1 ; He, Ruyu 1 ; He, Jianmei 1 ; Tang, Qilin 1 ; Zhao, Degang 4 ;
作者机构： 1.Sichuan Agr Univ, Maize Res Inst, Chengdu 611130, Peoples R China
2.Guizhou Acad Agr Sci, Guizhou Inst Prataculture, Guiyang 550006, Peoples R China
3.Guizhou Qian Da Inst Ecoenvironm & Hlth, Guiyang 550025, Peoples R China
4.Guizhou Univ, Key Lab Plant Resources Conservat & Germplasm Inno, Guiyang 550025, Peoples R China
5.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improve, Beijing 100081, Peoples R China
关键词： tall fescue; isoform sequencing; transcriptome; drought; agronomic traits
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 6 期
页码：
收录情况： SCI
摘要： Plant height and tillering are the key traits of tall fescue (Festuca arundinacea Schreb.), a perennial turf grass widely used for forage and turf worldwide. It exhibits excellent abiotic stress tolerance. However, the investigation of these traits at the genetic level is limited by the lack of a completely sequenced genome of tall fescue. Here, we generated genome-wide transcriptome data using PacBio isoform sequencing (Iso-Seq) technology. We obtained 73,628 transcripts with an average length of 2410 bp. Among these transcripts, 42,265 (60.09%) were predicted as complete full-length open reading frames. The dataset contained 11,520 simple sequence repeats; 737 bp long non-coding RNAs; and 1599 alternative splicing sites in unigenes. Sixty-three unigenes involved in abscisic acid biosynthesis, catabolism, and signaling pathways were identified. The Illumina-sequencing analysis results, further verified using qRT-PCR, revealed the significant upregulation of nine unigenes under drought stress. Ninety-three unigenes involved in controlling plant height and tillering were also identified, of which FaMAX1 was functionally verified to regulate plant tillering. Our results provide a valuable genetic resource about the complete transcriptome of tall fescue; the identified candidate genes can aid in improving the drought tolerance and agronomic traits in tall fescue and other related plants.
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