生物技术通报 ›› 2025, Vol. 41 ›› Issue (9): 168-181.doi: 10.13560/j.cnki.biotech.bull.1985.2025-0279
• 研究报告 • 上一篇
刘建国1,2(
), 刘格儿2(
), 郭颖欣2, 王斌1,2, 王玉昆1,2, 卢金凤2, 黄文庭3, 朱云娜1,2(
)
收稿日期:2025-03-15
出版日期:2025-09-26
发布日期:2025-09-24
通讯作者:
朱云娜,女,博士,副教授,研究方向 :园艺作物栽培生理与分子生物学;E-mail: zhuyn326@126.com作者简介:刘建国,男,博士,实验师,研究方向 :园艺作物生理生态;E-mail: jgliu@sgu.edu.cn基金资助:
LIU Jian-guo1,2(
), LIU Ge-er2(
), GUO Ying-xin2, WANG Bin1,2, WANG Yu-kun1,2, LU Jin-feng2, HUANG Wen-ting3, ZHU Yun-na1,2(
)
Received:2025-03-15
Published:2025-09-26
Online:2025-09-24
摘要:
目的 解析自花授粉品种‘桂柚1号’和母本‘沙田柚’果实品质、转录调控与代谢差异,为深入研究柚果实品质形成机制及代谢调控提供理论依据。 方法 采用生化指标检测、转录组学和广泛靶向代谢组学技术,对‘桂柚1号’和‘沙田柚’果实品质、差异表达基因和代谢物谱进行系统分析。 结果 ‘桂柚1号’和‘沙田柚’在单果重、可溶性固形物、可滴定酸、VC含量等指标无显著差异;但‘桂柚1号’果实的果形指数显著大于‘沙田柚’,而其总氨基酸含量显著低于‘沙田柚’。与‘沙田柚’相比,‘桂柚1号’中筛选到285个差异表达基因,其中表达上调和下调基因分别为190和95个。这些差异基因主要富集在精氨酸和脯氨酸代谢、脂肪酸代谢、苯丙烷生物合成等途径。与‘沙田柚’相比,‘桂柚1号’中显著上调和下调的差异代谢物分别为17和30种,上调代谢物主要为生物碱和香豆素,下调代谢物则为氨基酸、类黄酮、酚酸等。转录组与代谢组联合分析发现,‘桂柚1号’与‘沙田柚’果实品质差异主要受氨基酸、生物碱、苯丙烷等代谢途径影响,筛选出GOT2、COMT、UGT73C、CYP71A、PAIC等关键基因,推测这些差异基因可能在柚果品质形成中发挥重要作用。 结论 ‘桂柚1号’与‘沙田柚’成熟期果实常规品质指标相差不大,但在氨基酸、类黄酮、酚酸、生物碱等方面存在明显不同,二者的差异基因与代谢物主要富集在氨基酸、苯丙烷等物质代谢通路。
刘建国, 刘格儿, 郭颖欣, 王斌, 王玉昆, 卢金凤, 黄文庭, 朱云娜. 转录组和代谢组联合解析‘桂柚1号’和‘沙田柚’果实品质差异[J]. 生物技术通报, 2025, 41(9): 168-181.
LIU Jian-guo, LIU Ge-er, GUO Ying-xin, WANG Bin, WANG Yu-kun, LU Jin-feng, HUANG Wen-ting, ZHU Yun-na. Integrate Transcriptomic and Metabolomic Analysis of Fruits Quality Differences between ‘Guiyou No. 1’ and ‘Shatianyou’ Pomelo (Citrus maxima)[J]. Biotechnology Bulletin, 2025, 41(9): 168-181.
基因序号 Gene ID | 基因名称 Gene name | 上游引物序列 Forward primers sequence (5′-3′) | 下游引物序列 Reverse primers sequence (5′-3′) | 用途 Usage |
|---|---|---|---|---|
| Cg8g019990 | PAL | GAAAGTCCTGACGATGGGGG | GCATCAACGGGTAAGTTGCG | 荧光定量PCR Quantitative real-time PCR |
| Cg2g026340 | 4CL | GGCTGCTTGCATTTTTCGGA | AGGCAGCACACATAGGATCG | |
| Cg4g020580 | C4H | CTGAGGAGTTTCGGCCAGAG | TGCAATCACAAGCCCCAAGA | |
| Cg1g010540 | GPPK | GGAAGCCGAAGAGATGGAGG | TGAGGGGTTTGTTGTGGCAA | |
| Cg7g018290 | CYP71A | TCTGGGCAATGTCAGAGCTA | GTCTTGGGAGTAGCATCGGG | |
| Cg7g005510 | CSE | CTCCACGGCGAAGAGGATAA | GTGCCACATCCCCTCGTAAA | |
| Cg4g014720 | CAD | GCTCGGATTGACCCAAGAAG | AGCTTCTTTTGGAATTGGCTCTATC | |
| Cg3g013930 | CER | CCTGATCTCGCATTCTCCCC | GGCTCGTGTAGAGACTTCGG | |
| Cg6g013340 | HCT | CCCTTCGCCGAATCATCAGT | ACACGTTCGCCTTTGCATTC | |
| Cg5g006480 | GAPC | GGTGGCAGGGCTGCTTCATT | AGCGTCCTTCTCCAGCCTCA | 荧光定量PCR内参基因 Reference gene for RT-qPCR |
表1 RT-qPCR验证基因及引物信息
Table 1 RT-qPCR validation gene and primer information
基因序号 Gene ID | 基因名称 Gene name | 上游引物序列 Forward primers sequence (5′-3′) | 下游引物序列 Reverse primers sequence (5′-3′) | 用途 Usage |
|---|---|---|---|---|
| Cg8g019990 | PAL | GAAAGTCCTGACGATGGGGG | GCATCAACGGGTAAGTTGCG | 荧光定量PCR Quantitative real-time PCR |
| Cg2g026340 | 4CL | GGCTGCTTGCATTTTTCGGA | AGGCAGCACACATAGGATCG | |
| Cg4g020580 | C4H | CTGAGGAGTTTCGGCCAGAG | TGCAATCACAAGCCCCAAGA | |
| Cg1g010540 | GPPK | GGAAGCCGAAGAGATGGAGG | TGAGGGGTTTGTTGTGGCAA | |
| Cg7g018290 | CYP71A | TCTGGGCAATGTCAGAGCTA | GTCTTGGGAGTAGCATCGGG | |
| Cg7g005510 | CSE | CTCCACGGCGAAGAGGATAA | GTGCCACATCCCCTCGTAAA | |
| Cg4g014720 | CAD | GCTCGGATTGACCCAAGAAG | AGCTTCTTTTGGAATTGGCTCTATC | |
| Cg3g013930 | CER | CCTGATCTCGCATTCTCCCC | GGCTCGTGTAGAGACTTCGG | |
| Cg6g013340 | HCT | CCCTTCGCCGAATCATCAGT | ACACGTTCGCCTTTGCATTC | |
| Cg5g006480 | GAPC | GGTGGCAGGGCTGCTTCATT | AGCGTCCTTCTCCAGCCTCA | 荧光定量PCR内参基因 Reference gene for RT-qPCR |
图1 ‘桂柚1号’和‘沙田柚’果实表型(A)与品质指标(B-G)*表示在P < 0.05 水平上差异显著,ns表示差异不显著
Fig. 1 Phenotypes (A) and quality indexes (B-G) of 'Guiyou No.1' and 'Shatianyou' fruits* indicates significant differences at P < 0.05 level, ns indicates no significant differences
图3 ‘桂柚1号’和‘沙田柚’果实差异表达基因的GO富集分析(A)、KEGG通路分析(B)及代谢途径差异基因的表达热图(C)
Fig. 3 GO enrichment analysis (A), KEGG analysis of differentially expressed genes (B), and expressed heatmap involved in metabolites pathways in (C) 'Guiyou No.1' and 'Shatianyou' fruits
图6 ‘桂柚1号’和‘沙田柚’果实代谢物的主成分分析(A)和层次聚类分析(B)
Fig. 6 Principal components analysis (A) and hierarchical clustering analysis (B) of metabolites in 'Guiyou No.1' and 'Shatianyou' fruits
图7 ‘桂柚1号’和‘沙田柚’果实代谢物的OPLS-DA得分图、模型验证图及差异代谢物分析A:OPLS-DA得分图;B:模型验证图;C:火山图;D:差异代谢物分类图;E:差异代谢物热图
Fig. 7 OPLS-DA score diagram and verification diagram of model of metabolites in 'Guiyou No.1' and 'Shatianyou' fruits, as well as analysis of differential metabolitesA: OPLS-DA score diagram. B: Verification diagram of model. C: Volcano plot. D: Classification of differential metabolites. E: The heatmap of differential metabolites
图8 ‘桂柚1号’和‘沙田柚’果实差异代谢物的代谢通路富集分析A:KEGG分类图;B:差异丰度得分图
Fig. 8 Metabolic pathway enrichment analysis of differential metabolites between 'Guiyou No.1' and 'Shatianyou' fruitsA: KEGG classification plot. B: Differential abundance score plot
图9 ‘桂柚1号’和‘沙田柚’果实转录-代谢主要的映射通路A:相关性分析九象限图;B:KEGG富集分析;C:主要代谢通路的差异代谢物和差异基因分析
Fig. 9 Main common mapping pathways of transcription and metabolism in 'Guiyou No.1' and 'Shatianyou' fruitsA: Scatter plot of 9-quadrant associate analyses. B: KEGG enrichment analysis. C: Differential metabolites and genes analysis in major metabolic pathways
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