Analysis of the expression patterns of the heat-resistant gene of Syntrichia caninervis under different abiotic stresses based on RT-qPCR technology
Received date: 2025-01-10
Revised date: 2025-03-26
Online published: 2026-03-12
Based on transcriptomic data of the desiccation-tolerant moss Syntrichia caninervis under prior 55 ℃ heat stress, this study employed real-time fluorescent quantitative PCR (RT-qPCR) to investigate the expression patterns of nine heat-responsive differentially expressed genes (ScLEA14, ScGSTF11, ScHSP70-17, ScHsfB4b, ScMYB117, ScGLK1, ScERF039, ScERF016, and ScbHLH104) under high temperature, drought-rehydration, and NaCl stress conditions. The aim was to validate the reliability of RNA-Seq data and provide theoretical support for subsequent functional studies on stress-resistant genes in S. caninervis. Results demonstrated that: (1) The expression profiles of all nine genes under high-temperature stress exhibited substantial concordance with RNA-Seq data, confirming the stability of transcriptomic sequencing. (2) Under extreme heat and drought-rehydration stresses, all genes were differentially induced, with three genes attaining peak expression levels following 24-hour drought treatment, while eight genes displayed more prominent transcriptional activation during the rehydration phase. (3) NaCl stress triggered significant upregulation of all nine thermotolerance-associated genes, with six genes demonstrating statistically robust induction. Thus, the results demonstrate that the three genes ScLEA14, ScMYB117, and ScERF016 are strongly induced under extreme high temperature, drought-rehydration, and NaCl-induced high salinity stress, highlighting their potential as key candidate genes for further investigation into stress resistance mechanisms.
HUO Wenting , GU Tianqi , GAO Mengyu , SONG Yanfang , LI Hongbin , ZHUO Lu . Analysis of the expression patterns of the heat-resistant gene of Syntrichia caninervis under different abiotic stresses based on RT-qPCR technology[J]. Arid Zone Research, 2025 , 42(5) : 885 -894 . DOI: 10.13866/j.azr.2025.05.11
表1 齿肋赤藓9个耐热相关基因实时荧光定量PCR引物序列信息Tab. 1 Nine heat tolerance related genes primer sequences information for RT-qPCR analysis of Syntrichia caninervis |
| 基因 | 引物序列(5′→3′) | 产物长度/bp | |
|---|---|---|---|
| 正向引物 | 反向引物 | ||
| ScLEA14 | ATGATCACGATCTGCCCAT | TTATGCGGCTCCCAACTGA | 148 |
| ScGSTF11 | GAGTCTCACCAAGTTAAACAGCC | ATCTTCTTTTCCACGTACTGCAA | 89 |
| ScHSP70-17 | GAAGGACTGAGCATGTTTCCTCT | AGGCCATCTCTGTACAATCAGC | 150 |
| ScHsfB4b | CAGTACCAGTTCAAAGGATCACCC | TTCGTTTGGACAATGCAGTCACT | 84 |
| ScMYB117 | CGGTGCTGCTCTGAAACCAA | CTTGCCTGAAGCACAAACCAC | 82 |
| ScGLK1 | CCTCCTCCGACCTGTTAGATGT | CGCAACTAATCCCCGATGCC | 129 |
| ScERF039 | GTTGCATCTGCCGTCATCGAAC | CCCGCTACTACTGTCCTTCGTC | 118 |
| ScERF016 | AGAAGAATGGGAGTCAGAGAGAAGC | CCTTCACGCTCTTCTTCGCTAC | 81 |
| ScbHLH104 | TCACAACTGCGGTATCTGGT | AATCGTAGCTTTGTCGGTCT | 125 |
| α-TUB | CGGTCATTACACCGTGGGAA | CCTCTCCAGCAACAGCGAA | 243 |
表2 基于RNA-Seq数据筛选的齿肋赤藓耐热相关响应基因Tab. 2 Heat tolerance related genes based on RNA-Seq technique of Syntrichia caninervis |
| 基因分类 | 基因名称 | 基因差异表达倍数变化(Log2) | |||
|---|---|---|---|---|---|
| 10 min | 30 min | 45 min | 60 min | ||
| 功能基因 | ScLEA14 | +0.73 | +0.98 | +1.71 | +1.37 |
| ScGSTF11 | +1.59 | +2.39 | +2.99 | +2.66 | |
| ScHSP70-17 | +0.67 | +0.95 | +0.90 | +0.77 | |
| 转录因子 | ScHsfB4b | +1.54 | +2.27 | +2.42 | +2.25 |
| ScMYB117 | +1.28 | +1.43 | +1.58 | +1.37 | |
| ScGLK1 | +2.45 | +2.76 | +3.10 | +3.31 | |
| ScERF039 | +0.67 | +0.68 | +0.68 | +0.70 | |
| ScERF016 | +0.76 | +1.39 | +1.95 | +1.75 | |
| ScbHLH104 | +1.33 | +1.45 | +1.51 | +1.60 | |
注:+为表达上调。 |
图1 齿肋赤藓9个耐热相关基因在高温处理下实时荧光定量PCR分析和RNA-Seq基因表达谱注:FPKM是指每百万个比对上的reads中比对到外显子的每1000个碱基上的片段个数;相同小写字母为差异不显著,不同小写字母为差异显著,小写字母表示显著水平α=0.05。下同。 Fig. 1 Quantitative real-time PCR analysis and RNA-Seq gene expression profiles of nine heat-tolerance-associated genes under high-temperature treatment of Syntrichia caninervis |
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