Article(id=1309569823923864397, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309569821424051089, articleNumber=null, orderNo=null, doi=10.11733/j.issn.1007-0435.2026.03.007, pmid=null, cstr=null, oa=null, hot=0, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1756137600000, receivedDateStr=2025-08-26, revisedDate=1761062400000, revisedDateStr=2025-10-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1790155376653, onlineDateStr=2026-09-23, pubDate=null, pubDateStr=null, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790155376653, onlineIssueDateStr=2026-09-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790155376653, creator=13701087609, updateTime=1790155376653, updator=13701087609, issue=Issue{id=1309569821424051089, tenantId=1146029695717560320, journalId=1308397196074385509, year='2026', volume='34', issue='3', pageStart='745', pageEnd='1136', issueExtLink='null', onlineDate='null', pubDate='1773504000000', pubDateStr='2026-03-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1790155376058, creator='13701087609', updateTime=1790156773348, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1309575682133422151, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309569821424051089, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1309575682133422152, tenantId=1146029695717560320, journalId=1308397196074385509, issueId=1309569821424051089, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=804, endPage=816, ext={EN=ArticleExt(id=1309569825853244239, articleId=1309569823923864397, tenantId=1146029695717560320, journalId=1308397196074385509, language=EN, title=Analysis of Karyotype and Gene Expression Characteristics in Three Elytrigia elongata Germplasms, columnId=null, journalTitle=Acta Agrestia Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=Elytrigia elongata (Host) Nevski, a perennial bunchgrass, possesses outstanding stress tolerance and forage quality. This study aimed to examine the chromosome number, karyotype composition, and gene expression profiles across various ploidy levels within E. elongata germplasm. Three accessions, designated EE030, EE031, and Ae4x, were used as experimental materials. Karyotype analysis was conducted via an enzymatic maceration method, and differences in gene expression among accessions with varying ploidy levels were analyzed through full-length transcriptome sequencing on the PacBio platform. The results revealed that accession EE031 is a diploid (2n=2x=14) with a karyotype formula of K(2n)=2x=10m+4sm, classified as the “1A” type. Accession Ae4x is identified as a tetraploid (2n=4x=28) with a karyotype formula of K(2n)=4x=20m+6sm+2st, classified as the “2A” type. Accession EE030 is a decaploid (2n=10x=70) with a karyotype formula of K(2n)=10x=56m+12sm+2st, also categorized as the “2A” type. In parallel, transcriptome analysis revealed that increased ploidy level was associated with an essential expansion in transcript abundance and functional diversity. Differentially expressed genes in EE031, Ae4x, and EE030 were enriched in 10, 12, and 15 KEGG metabolic pathways, as well as in 39, 38, and 64 GO functional terms, respectively. Furthermore, core functional pathways specific to each ploidy level were identified: (1) EE031 (diploid) was enriched in proteins related to Chromosomes and Chromosome-binding, Stress response, and Signal receptor activity; (2) Ae4x (tetraploid) was enriched in Transporter and Hydrolase activities; (3) EE030 (decaploid) was associated with Metabolism, Transporter, and Transferase activities., authors=YU Ting1,2, MA Shuai2, MENG Lin2, MAO Pei-chun2, ZHENG Ming-li2, YANG Pei-zhi1, LI Zi-yan1, authorsList=YU Ting, MA Shuai, MENG Lin, MAO Pei-chun, ZHENG Ming-li, YANG Pei-zhi, LI Zi-yan, authorCompany=1 College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
2 Institute of Grassland, Flowers, and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1309569824188105550, articleId=1309569823923864397, tenantId=1146029695717560320, journalId=1308397196074385509, language=CN, title=三份长穗偃麦草种质核型与基因表达特征分析, columnId=1309565024058835950, journalTitle=草地学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=长穗偃麦草[Elytrigia elongata (Host) Nevski]作为多年生疏丛型禾草,具有突出的抗逆性及饲用价值。为探究长穗偃麦草种质染色体数目、核型组成及不同倍性种质的基因表达特性,以编号EE030,EE031和Ae4x的三份长穗偃麦草种质为材料,采用酶解法进行染色体核型分析,并利用PacBio平台全长转录组测序技术,分析不同倍性种质间基因表达差异。结果表明,种质EE031为二倍体(2n=2x=14),核型公式为K(2n)=2x=10m+4sm,属“1A”型;Ae4x种质为四倍体(2n=4x=28),核型公式为K(2n)=4x=20m+6sm+2st,属“2A”型;EE030为十倍体(2n=10x=70),核型公式为K(2n)=10x=56m+12sm+2st,属“2A”型。随着倍性增加,转录本丰度和功能多样性显著扩展,EE031,Ae4x和EE030差异性表达基因分别富集并注释到10条、12条和15条KEGG代谢通路,以及39个、38个和64个GO功能条目。三种不同倍性长穗偃麦草特异表达基因富集的核心通路和条目分别包括EE031中染色体及其结合蛋白、应激响应和信号受体等;Ae4x中转运蛋白、水解酶等;EE030中代谢、转运蛋白和转移酶活性等。, authors=余婷1,2, 马帅2, 孟林2, 毛培春2, 郑明利2, 杨培志1, 李紫燕1, authorsList=余婷, 马帅, 孟林, 毛培春, 郑明利, 杨培志, 李紫燕, authorCompany=1 西北农林科技大学草业与草原学院, 陕西 杨凌 712100;
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三份长穗偃麦草种质核型与基因表达特征分析
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余婷, 马帅, 孟林, 毛培春, 郑明利, 杨培志, 李紫燕
草地学报 | 研究论文 2026,34(3): 804-816
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草地学报 |研究论文 2026 , 34 (3) : 804 -816
三份长穗偃麦草种质核型与基因表达特征分析
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余婷, 马帅, 孟林, 毛培春, 郑明利, 杨培志, 李紫燕
作者信息
作者简介:
余婷(2000-),女,汉族,重庆人,硕士研究生,主要从事牧草耐盐性状鉴定与评价研究,E-mail:13594543503@163.com
Analysis of Karyotype and Gene Expression Characteristics in Three Elytrigia elongata Germplasms
YU Ting, MA Shuai, MENG Lin, MAO Pei-chun, ZHENG Ming-li, YANG Pei-zhi, LI Zi-yan
Affiliations
    1 College of Grassland Agriculture, Northwest A&F University, Yangling, Shaanxi Province 712100, China;
    2 Institute of Grassland, Flowers, and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
doi: 10.11733/j.issn.1007-0435.2026.03.007
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长穗偃麦草[Elytrigia elongata (Host) Nevski]作为多年生疏丛型禾草,具有突出的抗逆性及饲用价值。为探究长穗偃麦草种质染色体数目、核型组成及不同倍性种质的基因表达特性,以编号EE030,EE031和Ae4x的三份长穗偃麦草种质为材料,采用酶解法进行染色体核型分析,并利用PacBio平台全长转录组测序技术,分析不同倍性种质间基因表达差异。结果表明,种质EE031为二倍体(2n=2x=14),核型公式为K(2n)=2x=10m+4sm,属“1A”型;Ae4x种质为四倍体(2n=4x=28),核型公式为K(2n)=4x=20m+6sm+2st,属“2A”型;EE030为十倍体(2n=10x=70),核型公式为K(2n)=10x=56m+12sm+2st,属“2A”型。随着倍性增加,转录本丰度和功能多样性显著扩展,EE031,Ae4x和EE030差异性表达基因分别富集并注释到10条、12条和15条KEGG代谢通路,以及39个、38个和64个GO功能条目。三种不同倍性长穗偃麦草特异表达基因富集的核心通路和条目分别包括EE031中染色体及其结合蛋白、应激响应和信号受体等;Ae4x中转运蛋白、水解酶等;EE030中代谢、转运蛋白和转移酶活性等。
长穗偃麦草  /  多倍体  /  核型分析  /  全长转录组测序  /  差异性表达基因
Elytrigia elongata (Host) Nevski, a perennial bunchgrass, possesses outstanding stress tolerance and forage quality. This study aimed to examine the chromosome number, karyotype composition, and gene expression profiles across various ploidy levels within E. elongata germplasm. Three accessions, designated EE030, EE031, and Ae4x, were used as experimental materials. Karyotype analysis was conducted via an enzymatic maceration method, and differences in gene expression among accessions with varying ploidy levels were analyzed through full-length transcriptome sequencing on the PacBio platform. The results revealed that accession EE031 is a diploid (2n=2x=14) with a karyotype formula of K(2n)=2x=10m+4sm, classified as the “1A” type. Accession Ae4x is identified as a tetraploid (2n=4x=28) with a karyotype formula of K(2n)=4x=20m+6sm+2st, classified as the “2A” type. Accession EE030 is a decaploid (2n=10x=70) with a karyotype formula of K(2n)=10x=56m+12sm+2st, also categorized as the “2A” type. In parallel, transcriptome analysis revealed that increased ploidy level was associated with an essential expansion in transcript abundance and functional diversity. Differentially expressed genes in EE031, Ae4x, and EE030 were enriched in 10, 12, and 15 KEGG metabolic pathways, as well as in 39, 38, and 64 GO functional terms, respectively. Furthermore, core functional pathways specific to each ploidy level were identified: (1) EE031 (diploid) was enriched in proteins related to Chromosomes and Chromosome-binding, Stress response, and Signal receptor activity; (2) Ae4x (tetraploid) was enriched in Transporter and Hydrolase activities; (3) EE030 (decaploid) was associated with Metabolism, Transporter, and Transferase activities.
Elytrigia elongata  /  Polyploidy  /  Karyotype analysis  /  Full-length transcriptome sequencing  /  Differentially expressed genes
余婷, 马帅, 孟林, 毛培春, 郑明利, 杨培志, 李紫燕. 三份长穗偃麦草种质核型与基因表达特征分析. 草地学报, 2026 , 34 (3) : 804 -816 . DOI: 10.11733/j.issn.1007-0435.2026.03.007
YU Ting, MA Shuai, MENG Lin, MAO Pei-chun, ZHENG Ming-li, YANG Pei-zhi, LI Zi-yan. Analysis of Karyotype and Gene Expression Characteristics in Three Elytrigia elongata Germplasms[J]. Acta Agrestia Sinica, 2026 , 34 (3) : 804 -816 . DOI: 10.11733/j.issn.1007-0435.2026.03.007

    北京市农林科学院科技创新能力建设专项 (KJCX20251303,KJCX20230109)

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doi: 10.11733/j.issn.1007-0435.2026.03.007
  • 接收时间:2025-08-26
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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