华北农学报 ›› 2021, Vol. 36 ›› Issue (1): 81-94. doi: 10.7668/hbnxb.20191253

所属专题: 小麦

• 作物遗传育种·种质资源·生物技术 • 上一篇    下一篇

雌雄蕊原基分化期低温胁迫下2个小麦品种幼穗miRNA表达谱分析

张自阳, 王斌, 王智煜, 王志伟, 朱启迪, 茹振钢, 刘明久   

  1. 河南科技学院, 河南省现代生物育种协同创新中心, 河南 新乡 453003
  • 收稿日期:2020-11-07 出版日期:2021-02-28
  • 通讯作者: 刘明久(1966-),男,河南获嘉人,教授,主要从事小麦抗逆育种研究。
  • 作者简介:张自阳(1984-),男,河南舞钢人,讲师,硕士,主要从事小麦抗逆育种研究。
  • 基金资助:
    科技部创新方法专项(2018IM030100);河南省基础与前沿技术研究计划项目(162300410142);河南省科技攻关项目(212102110298)

Analysis of miRNA Expression Profile in Young Ear of Two Wheat Varieties Under Low Temperature Stress at the Female Stamen Primordium Differentiation Stage

ZHANG Ziyang, WANG Bin, WANG Zhiyu, WANG Zhiwei, ZHU Qidi, RU Zhengang, LIU Mingjiu   

  1. Henan Institute of Science and Technology, Collaborative Innovation Center of Modern Biological Breeding, Xinxiang 453003, China
  • Received:2020-11-07 Published:2021-02-28

摘要: 为探讨春季低温(倒春寒)胁迫下抗倒春寒能力不同的小麦品种相关miRNA及其响应规律,提供miRNA的表达谱和差异表达miRNA的信息,揭示差异表达miRNA在小麦抗倒春寒中的作用,采用高通量测序(Small RNA-seq)技术对雌雄蕊原基分化期0℃低温胁迫72 h及未低温处理(对照)的矮抗58(AK58)和郑麦366(ZM366)幼穗进行测序,通过生物信息学分析,以padj<0.05且|log2(Fold_change)|≥1为条件,筛选低温胁迫下差异表达显著的miRNA,利用psRobot(v1.2)对差异表达miRNA靶基因进行预测,然后对差异表达显著miRNA的靶基因进行GO富集分析和KEGG Pathway分析。结果表明,小麦幼穗测序共鉴定到112类miRNA,分属于38个不同的MIRNA家族。AK58、ZM366分别鉴定出85,88个差异表达miRNA,AK58有27个miRNA表达有显著差异,其中23个显著上调表达,4个显著下调表达,差异表达极显著的miRNA为2个,分别是tae-miR9672b、tae-miR9672a-3p;ZM366有48个差异表达显著的miRNA,13个显著上调表达,35个显著下调表达,差异表达极显著的miRNA为4个,分别为tae-miR9672b、tae-miR9672a-3p、tae-miR6201、tae-miR9674b-5p。对低温胁迫下AK58与ZM366差异表达的miRNA进行靶基因预测,AK58 85个差异表达miRNA对应848个靶基因;ZM366 88个差异表达miRNA对应6 537个靶基因。GO功能富集分析结果显示,AK58差异表达miRNA靶基因有20个生物学过程、6个细胞成分、6个分子功能类别极显著富集(FDR<0.01);ZM366有10个生物学过程、14个细胞成分、19个分子功能类别极显著富集(FDR<0.01)。对2个小麦品种幼穗中差异表达miRNA靶基因进行KEGG代谢通路(Pathway)富集分析,AK58差异表达miRNA靶基因显著富集(P<0.05)到RNA聚合酶,嘌呤代谢,嘧啶代谢,光合生物固碳途径,自噬,托烷、哌啶和吡啶生物碱的生物合成,核苷酸切除修复,错配修复,DNA复制,核糖体,烟酸和烟酰胺代谢11个代谢通路;ZM366差异表达miRNA靶基因显著富集(P<0.05)在植物-病原互作,植物昼夜节律,缬氨酸、亮氨酸和异亮氨酸降解,细胞周期,苯丙氨酸代谢,苯丙烷生物合成,RNA聚合酶,植物激素信号转导,氰胺酸代谢,次生代谢产物的生物合成,光合生物中碳固定,丙酮酸代谢,类胡萝卜素生物合成13个代谢通路。miRNA调控mRNA参与小麦应答低温胁迫中,小麦可能通过miRNA171a、miRNA156、miRNA398等多个miRNA的介导调控来抵御倒春寒胁迫,植物昼夜节律代谢途径可能与低温胁迫密切相关。2个小麦品种抗倒春寒能力不同的原因可能与miRNA调控光形态建成转导途径和开花过程的靶基因表达模式不同有关。

关键词: 小麦, 幼穗, 低温胁迫, RNA-seq, miRNA

Abstract: To explore the relevant miRNAs and their response laws of wheat varieties with different resistance to cold in spring under the stress of low temperature in spring(late spring cold), high-throughput sequencing(Small RNA-seq) technology was used to analyze the young panicles of Aikang 58(AK58) and Zhengmai 366(ZM366) in the differentiation stage of pistil and stamen primordium at 0℃ low temperature stress for 72 h and without low temperature treatment(control).The purpose of sequencing is provide miRNA expression profiles and information on differentially expressed miRNAs, and reveal the role of differentially expressed miRNAs in wheat resistance to late spring cold. Through bioinformatics analysis, under the condition of padj<0.05 and|log2(Fold_change)| ≥ 1, the miRNAs with significant differential expression was screened under low temperature stress;using psRobot(v1.2) to predict the differentially expressed miRNA target genes, and then target genes with significantly differentially expressed miRNAs were subjected to GO enrichment analysis and KEGG Pathway analysis. The results showed that 112 types of miRNAs were identified by sequencing of wheat ears, belonging to 38 different MIRNA families.AK58 and ZM366 identified 85 and 88 differentially expressed miRNAs, respectively. AK58 had 27 miRNAs with significant differences in expression, 23 of which were significantly up-regulated, 4 were significantly down-regulated, and 2 miRNAs with extremely significant differential expression were tae-miR9672b, tae-miR9672a-3p;ZM366 had 48 miRNAs with significant differential expression, 13 with significantly up-regulated expression, 35 with significantly down-regulated expression, 4 miRNAs with extremely significant differential expression, tae-miR9672b, tae-miR9672a-3p, tae-miR6201, tae-miR9674b-5p.Target genes were predicted for the differentially expressed miRNAs of AK58 and ZM366 under low temperature stress. 85 differentially expressed miRNAs of AK58 correspond to 848 target genes;88 differentially expressed miRNAs of ZM366 correspond to 6 537 target genes.GO function enrichment analysis results showed that AK58 differentially expressed miRNA target genes had 20 biological processes, 6 cell components, and 6 molecular function categories extremely significantly enriched(FDR<0.01).ZM366 had 10 biological processes, 14 cell components, and 19 molecular functional categories extremely significantly enriched(FDR<0.01).The KEGG metabolic pathway(Pathway) enrichment analysis of the differentially expressed miRNA target genes in the young ears of two wheat varieties showed that AK58 differentially expressed miRNA target genes were significantly enriched(P<0.05) to RNA polymerase, purine metabolism, and pyrimidine metabolism, photosynthetic organism carbon fixation pathway, autophagy, tropane, piperidine and pyridine alkaloid biosynthesis, nucleotide excision repair, mismatch repair, DNA replication, ribosome, niacin and nicotinamide metabolism 11 metabolic pathways.ZM366 differentially expressed miRNA target genes were significantly enriched(P<0.05) in plant pathogen interactions, plant circadian rhythms, degradation of valine, leucine and isoleucine, cell cycle, phenylalanine metabolism, propionic acid biology synthesis, RNA polymerase, plant hormone signal transduction, cyanamide acid metabolism, biosynthesis of secondary metabolites, carbon fixation of photosynthetic organisms, pyruvate metabolism, carotenoid biosynthesis, 13 metabolic pathways.Wheat miRNA regulation of mRNA participates in wheat response to low temperature stress. It is possible that miRNAs such as miRNA171a, miRNA156, miRNA398 and other miRNAs can mediate regulation to resist cold stress. Plant circadian rhythms may be closely related to low temperature stress.The reason for the different resistance to spring cold of the two wheat varieties may be related to the different expression patterns of target genes in the miRNA-regulated photomorphogenesis pathway and flowering process.

Key words: Wheat, Young spike, Low-temperature stress, RNA-seq, miRNA

中图分类号: 

引用本文

张自阳, 王斌, 王智煜, 王志伟, 朱启迪, 茹振钢, 刘明久. 雌雄蕊原基分化期低温胁迫下2个小麦品种幼穗miRNA表达谱分析[J]. 华北农学报, 2021, 36(1): 81-94. doi: 10.7668/hbnxb.20191253.

ZHANG Ziyang, WANG Bin, WANG Zhiyu, WANG Zhiwei, ZHU Qidi, RU Zhengang, LIU Mingjiu. Analysis of miRNA Expression Profile in Young Ear of Two Wheat Varieties Under Low Temperature Stress at the Female Stamen Primordium Differentiation Stage[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(1): 81-94. doi: 10.7668/hbnxb.20191253.

使用本文

0
    /   /   推荐 /   导出引用

链接本文: http://www.hbnxb.net/CN/10.7668/hbnxb.20191253

               http://www.hbnxb.net/CN/Y2021/V36/I1/81