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园艺学报 ›› 2025, Vol. 52 ›› Issue (12): 3288-3302.doi: 10.16420/j.issn.0513-353x.2024-0781

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

不同倍性‘凤丹’牡丹叶片转录组差异表达分析

彭朝凤1,2, 齐帅征2, 耿喜宁2, 姚鹏强2, 谢丽华2, 张钰2,3, 陈明辉2, 施江1,*(), 程世平2,*()   

  1. 1 河南科技大学农学院/牡丹学院,河南洛阳 471000
    2 平顶山学院化学与环境工程学院,河南省生态经济型木本植物种质创新与利用重点实验室,河南平顶山 467000
    3 河南科技大学园林与植物保护学院,河南洛阳 471000
  • 收稿日期:2025-05-29 修回日期:2025-09-26 出版日期:2025-12-25 发布日期:2025-12-20
  • 通讯作者:
    *(E-mail:
  • 基金资助:
    河南省科技攻关项目(252102110305)

Differential Expressed Analysis by Transcriptome Sequencing in Leaves of Different Ploidy Paeonia ostii‘Fengdan’

PENG Chaofeng1,2, QI Shuaizheng2, GENG Xining2, YAO Pengqiang2, XIE Lihua2, ZHANG Yu2,3, CHEN Minghui2, SHI Jiang1,*(), CHENG Shiping2,*()   

  1. 1 College of Agriculture/Tree Peony,Henan University of Science & Technology,Luoyang,Henan 471000,China
    2 Henan Province Key Laboratory of Germplasm Innovation and Utilization of Eco-economic Woody Plant,School of Chemistry and Environmental Engineering,Pingdingshan University,Pingdingshan,Henan 467000,China
    3 College of Agriculture/Tree Peony,Henan University of Science & Technology,Luoyang,Henan 471000,China
  • Received:2025-05-29 Revised:2025-09-26 Published:2025-12-25 Online:2025-12-20

摘要:

以不同倍性‘凤丹’牡丹(Paeonia ostii‘Fengdan’)盛花期和花衰败期叶片为试验材料,分析其叶片表型、解剖结构和转录组变化。结果表明,叶面积大小顺序为三倍体 > 四倍体 > 二倍体;叶片厚度与叶脉直径大小为四倍体 > 三倍体 > 二倍体。与二倍体叶片相比,盛开期三倍体叶片中SAUR23SAUR32ARR4IPT3IPT5等19个基因上调表达,四倍体叶片中SAUR78CYCD3ARP5ZOG2HEMDHEME等18个基因上调表达;衰败期三倍体叶片中ARF10IPT9HEMB等10个基因上调表达,四倍体叶片中AHP4CKX7ZOGUGT83A1PAOSGR等13个基因上调表达。对光合生物的固碳作用途径中的差异基因分析表明,GAPCMDH在盛开期三倍体叶片中的表达量较高。加权基因共表达网络分析(weighted gene co-expression network analysis,WGCNA)表明,TCTPBTBBRH1PsMYC2等18个核心基因在三倍体中的表达量较高,GLYNmrA-likeWAT1等15个核心基因在四倍体中高表达, qRT-PCR结果证明转录组测序数据可靠。表明这些基因的差异表达影响了多倍体‘凤丹’牡丹叶片的生长发育。

关键词: 牡丹, 多倍体, 转录组测序, 加权基因共表达网络分析

Abstract:

In this study,the leaves from different ploidy Paeonia ostii‘Fengdan’at blooming and flower decay stage as test materials,the change of leaf phenotype,anatomical structure and transcriptome were analyed. The results showed that the order of leaf area size was triploid > tetraploid > diploid;the order of leaf blade thickness and vein diameter were tetraploid > triploid > diploid. Compared with diploid flowering leaves,19 genes such as SAUR23SAUR32ARR4IPT3,and IPT5 were up-regulated expression in triploid leaves at blooming stage;18 genes,including SAUR78CYCD3ARP5ZOG2HEMD,and HEME,were up-regulated expression in tetraploid leaves at bloom stage. Up-regulated expression of 10 genes including ARF10IPT9,and HEMB in triploid leaves at flower decay stage;13 genes,including AHP4CKX7ZOGUGT83A1PAO,and SGR,were up-regulated expression in tetraploid leaves at flower decay stage. The analysis of differential genes in the pathway of carbon fixation in photosynthetic organisms showed that the expression levels of GAPC and MDH genes were higher in triploid leaves at blooming stage. WGCNA analyses showed that 18 core genes,including TCTPBTBBRH1 and PsMYC2,were expressed at higher levels in triploid,and 15 core genes,such as GLYNmrA-like and WAT1,were highly expressed in tetraploid. The result of qRT-PCR confirmed the reliability of the RNA-seq data. The differential expression of these genes affected the growth and development of polyploid P. ostii‘Fengdan’leaves.

Key words: Paeonia ostii, polyploid, transcriptome sequencing, WGCNA analysis