Article(id=1307013142593163731, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013104081068276, articleNumber=null, orderNo=null, doi=10.11843/j.issn.0366-6964.2026.02.030, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1749484800000, receivedDateStr=2025-06-10, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1789545816324, onlineDateStr=2026-09-16, pubDate=1771776000000, pubDateStr=2026-02-23, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1789545816324, onlineIssueDateStr=2026-09-16, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1789545816324, creator=13701087609, updateTime=1789545816324, updator=13701087609, issue=Issue{id=1307013104081068276, tenantId=1146029695717560320, journalId=1306274286668972124, year='2026', volume='57', issue='2', pageStart='569', pageEnd='1176', issueExtLink='null', onlineDate='null', pubDate='1771776000000', pubDateStr='2026-02-23', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1789545807142, creator='13701087609', updateTime=1789609910854, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1307281975350419753, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013104081068276, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1307281975350419754, tenantId=1146029695717560320, journalId=1306274286668972124, issueId=1307013104081068276, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=933, endPage=944, ext={EN=ArticleExt(id=1307013142815461844, articleId=1307013142593163731, tenantId=1146029695717560320, journalId=1306274286668972124, language=EN, title=Identification and Analysis of a Multi-lineage Porcine Reproductive and Respiratory Syndrome Virus Co-infection Case Using Metatranscriptomic Sequencing, columnId=1307007432299930010, journalTitle=Acta Veterinaria et Zootechnica Sinica, columnName=PREVENTIVE VETERINARY MEDICINE, runingTitle=null, highlight=null, articleAbstract=

Porcine reproductive and respiratory syndrome virus (PRRSV) remains a pathogen causing substantial economic losses to China’s swine industry. Porcine reproductive and respiratory syndrome virus type 2 (PRRSV-2) currently predominates in China, exhibiting a complex epidemiological pattern characterized by co-circulating multiple lineages, which significantly complicates disease control measures. This study aimed to evaluate the diagnostic potential of metatranscriptomic sequencing in discriminating PRRSV-2 mixed infections involving multiple lineages. A PRRSV-2-positive serum sample collected from a swine farm in Sichuan Province was subjected to metatranscriptomic sequencing. This approach successfully recovered complete viral genome sequences. Subsequent comprehensive analysis, including phylogenetic reconstruction (IQ-TREE), similarity comparison (Megalign), and recombination analysis (RDP4/SimPlot), was employed to elucidate the evolutionary and recombination characteristics of the viruses. The results demonstrate the successful identification of three distinct PRRSV-2 strains from this single serum sample: SC01-2025 (15 023 bp), SC02-2025 (14 954 bp), and SC03-2025 (15 293 bp)—the phylogenetic classification assigned these strains to lineages 1.8, 3, and 8.7, respectively.SC01-2025 was identified as a recombinant between lineage 1.8 (NADC30) and lineage 5 (VR2332). While its full genome shared 88.09% nucleotide similarity with the NADC30 strain, regions encompassing NSP3-7, NSP9-12, and ORF3 exhibited higher similarity to the VR2332 strain. SC02-2025 was found to be a triple-recombinant virus (lineages 1.8/3/8.7). This strain displayed the highest similarity to the NADC30 strain within the NSP2 and NSP3 regions, to the JXA1 strain within NSP1 and NSP7-10 regions, and the QYYZ strain in the remaining genomic segments. SC03-2025 showed 99% full-genome nucleotide similarity to the JXA1-P80 vaccine strain, with no evidence of recombination detected. This study, leveraging metatranscriptomic sequencing, precisely identified a mixed infection involving multiple PRRSV-2 lineages within a single pig farm in Sichuan. It revealed the complex epidemiological scenario involving the concurrent presence of a vaccine strain (JXA1-P80) and field strains (NADC30-like and QYYZ-like viruses). These findings demonstrate that metatranscriptomic sequencing provides high-resolution diagnostic support for PRRSV disease surveillance and monitoring.

, authors=Pandan CHEN1, 2, 3, 4, Xiaolong XU1, 2, 3, 4, Huixin LI1, 2, 3, 4, Liangfeng WANG1, 2, 3, 4, Qianjun ZHANG1, 2, 3, 4, Yana DONG1, 2, 3, 4, Jiatao SU1, 2, 3, 4, Dan XU1, 2, 3, 4, Heng WANG1, 2, 3, 4, Lang GONG1, 2, 3, 4, Yankuo SUN1, 2, 3, 4, Feng QIN5, authorsList=Pandan CHEN, Xiaolong XU, Huixin LI, Liangfeng WANG, Qianjun ZHANG, Yana DONG, Jiatao SU, Dan XU, Heng WANG, Lang GONG, Yankuo SUN, Feng QIN, authorCompany=null, correspAuthors=Yankuo SUN, Feng QIN, authorNote=null, correspAuthorsNote=
SUN Yankuo, E-mail:
QIN Feng, E-mail:
, 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=1307013144186999265, articleId=1307013142593163731, tenantId=1146029695717560320, journalId=1306274286668972124, language=CN, title=基于宏转录组测序技术对一例猪繁殖与呼吸综合征病毒多谱系混合感染的鉴定与分析, columnId=1307007432459313564, journalTitle=畜牧兽医学报, columnName=预防兽医, runingTitle=null, highlight=null, articleAbstract=

猪繁殖与呼吸综合征病毒(PRRSV)是对中国养猪业造成重大经济损失的病原之一。目前,PRRSV-2在国内占据主导地位,呈现出多谱系共存的复杂态势,增加了防控难度。本研究旨在评估宏转录组测序技术在PRRSV-2多谱系混合感染鉴别诊断中的应用潜力。通过对四川某猪场采集的1份PRRSV-2阳性血清样品进行宏转录组测序,获得病毒的全基因组序列,并进一步结合遗传进化分析(IQ-TREE)、相似性比对(Megalign)及重组分析(RDP4/SimPlot)深入解析病毒的进化重组特征。结果显示,本研究从单一血清样品中成功鉴定出SC01-2025(15 023 bp)、SC02-2025(14 954 bp)、SC03-2025(15 293 bp)共3株PRRSV-2,它们的进化分群分别属于谱系1.8、谱系3和谱系8.7。其中,SC01-2025为谱系1.8(代表株NADC30)与谱系5(代表株VR2332)的重组株,其全基因组与NADC30株相似性为88.09%,但在NSP3~7、NSP9~12及ORF3区域与VR2332株相似性更高;SC02-2025为三谱系重组株(谱系1.8/3/8.7),该株在NSP2和NSP3区域与NADC30株最相似,在NSP1、NSP7~10与JXA1株最相似,剩下的区域则与QYYZ株最相似;SC03-2025与JXA1-P80疫苗株全基因组相似性达99%,未检测到重组。本研究基于宏转录组测序技术精准识别出1例四川某猪场PRRSV多谱系混合感染,揭示了该猪场疫苗株(JXA1-P80)与野毒株(类NADC30株、类QYYZ株)共存的复杂流行情况,研究结果表明宏转录组测序技术可为PRRSV疫病诊断和监测提供高分辨率技术支撑。

, authors=陈盼丹1, 2, 3, 4, 许小龙1, 2, 3, 4, 李慧鑫1, 2, 3, 4, 王良锋1, 2, 3, 4, 张倩君1, 2, 3, 4, 董亚娜1, 2, 3, 4, 苏佳涛1, 2, 3, 4, 许丹1, 2, 3, 4, 王衡1, 2, 3, 4, 龚浪1, 2, 3, 4, 孙彦阔1, 2, 3, 4, 秦锋5, authorsList=陈盼丹, 许小龙, 李慧鑫, 王良锋, 张倩君, 董亚娜, 苏佳涛, 许丹, 王衡, 龚浪, 孙彦阔, 秦锋, authorCompany=null, correspAuthors=孙彦阔, 秦锋, authorNote=

陈盼丹,主要从事兽医传染病和生物信息学研究,E-mail:

, correspAuthorsNote=
孙彦阔,主要从事兽医传染病研究,E-mail:
秦锋,主要从事养猪生产与猪群健康管理,E-mail:
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陈盼丹,主要从事兽医传染病和生物信息学研究,E-mail:

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陈盼丹,主要从事兽医传染病和生物信息学研究,E-mail:

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departmentName=null, remark=5.信阳市畜禽重大疫病防控综合技术研发重点实验室/信阳农林学院,信阳 464000)])], figs=[ArticleFig(id=1307282460698501207, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Fig.1, caption=Alignment of obtained PRRSV sequences with VR-2332(EF536003.1) strain

Different colored blocks represent the three distinct PRRSV-2 sequences assembled in this study (SC01-2025, SC02-2025, SC03-2025).Gaps within the blocks indicate genomic deletions in the respective strains, with “aa deletion” denoting amino acid deletions. The numerical values indicate the similarity percentage to the reference strain VR2332(EF536003.1). The colored bar at the bottom of the figure provides a schematic representation of the PRRSV genome structure

, figureFileSmall=eV+lD+z+MDSur4XxxlScAQ==, figureFileBig=ZuFqbGLaRKEawXOjMfp8GA==, tableContent=null), ArticleFig(id=1307282461038239832, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=图1, caption=测序所得PRRSV与VR2332(EF536003.1)株比对图

不同色块代表组装获得的3条不同的PRRSV-2序列(SC01-2025、SC02-2025、SC03-2025),色块中的空缺表示其基因组的缺失情况,“aa deletion”表示氨基酸缺失,数值为其与VR2332(EF536003.1)株相似度。图中底部彩色条带为PRRSV基因组结构示意图

, figureFileSmall=eV+lD+z+MDSur4XxxlScAQ==, figureFileBig=ZuFqbGLaRKEawXOjMfp8GA==, tableContent=null), ArticleFig(id=1307282461134708825, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Fig.2, caption=Phylogenetic tree showing the evolutionary relationships of sequenced PRRSV strains

Maximum likelihood phylogenetic trees were constructed based on the complete genomes (left) and ORF5 genes (right) of the three sequenced PRRSV strains. The sequenced PRRSV strains are marked with red stars (★)

, figureFileSmall=2Fq26uLWQMxB2oXExLmGiQ==, figureFileBig=gCd2mOD4TxGzTie24zlNEg==, tableContent=null), ArticleFig(id=1307282461436698714, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=图2, caption=测序所得PRRSV系统发育树

基于测序所得3株PRRSV的全基因组(左)、ORF5基因(右)构建的最大似然发育树。测序所得PRRSV用红色★标识

, figureFileSmall=2Fq26uLWQMxB2oXExLmGiQ==, figureFileBig=gCd2mOD4TxGzTie24zlNEg==, tableContent=null), ArticleFig(id=1307282461495418971, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Fig.3, caption=Genetic recombination analysis of SC01-2025

A. SimPlot recombination analysis results, with colored solid lines representing reference strains from different lineages and potential recombination regions highlighted in distinct colors; B. Phylogenetic trees of different recombinant regions, with the sequenced PRRSV strains marked by red stars (★)

, figureFileSmall=QPZCvZTTcIa4sftTtreB+A==, figureFileBig=d6R7kyCCyxQ/D1KycbojbQ==, tableContent=null), ArticleFig(id=1307282461558333532, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=图3, caption=SC01-2025的基因重组分析

A. SimPlot重组分析结果,图中彩色实线分别表示不同谱系的参考株,潜在重组区域采用差异颜色进行标识;B. 不同重组区域的遗传进化树,测序所得PRRSV用红色★标识

, figureFileSmall=QPZCvZTTcIa4sftTtreB+A==, figureFileBig=d6R7kyCCyxQ/D1KycbojbQ==, tableContent=null), ArticleFig(id=1307282461621248093, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Fig.4, caption=Genetic recombination analysis of SC02-2025

A. SimPlot recombination analysis results, with colored solid lines representing reference strains from different lineages and potential recombination regions highlighted in distinct colors; B. Phylogenetic trees of different recombinant regions, with the sequenced PRRSV strains marked by red stars (★)

, figureFileSmall=0s3A5/5f7nUlud9UzjLprQ==, figureFileBig=ffjRdvS4a/TzfFTZPubhZQ==, tableContent=null), ArticleFig(id=1307282461679968350, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=图4, caption=SC02-2025的基因重组分析

A. SimPlot重组分析结果,图中彩色实线分别表示不同谱系的参考株,潜在重组区域采用差异颜色进行标识;B.不同重组区域的遗传进化树,测序所得PRRSV用红色★标识

, figureFileSmall=0s3A5/5f7nUlud9UzjLprQ==, figureFileBig=ffjRdvS4a/TzfFTZPubhZQ==, tableContent=null), ArticleFig(id=1307282461981958239, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Fig.5, caption=Genetic recombination analysis of SC03-2025

SimPlot recombination analysis results, with colored solid lines representing reference strains from different lineages and potential recombination regions highlighted in distinct colors

, figureFileSmall=pbTasRXRd5iLlgsnjxXI+A==, figureFileBig=Hzv++Lg8ppA/gNMRm4nQCQ==, tableContent=null), ArticleFig(id=1307282463638708320, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=图5, caption=SC03-2025的基因重组分析

SimPlot重组分析结果,图中彩色实线分别表示不同谱系的参考株,潜在重组区域采用差异颜色进行标识

, figureFileSmall=pbTasRXRd5iLlgsnjxXI+A==, figureFileBig=Hzv++Lg8ppA/gNMRm4nQCQ==, tableContent=null), ArticleFig(id=1307282463697428577, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=EN, label=Table 1, caption=

PRRSV reference strains used in this study

, figureFileSmall=null, figureFileBig=null, tableContent=

登录号

Accession number

名称

Name

国家Country

年份

Year

登录号

Accession number

名称

Name

国家Country年份Year
AF176348.2PA8Canada1995KX815423.115LN1China2015
AY032626.1CH-1aChina1996KX815415.115HEN4China2015
AF331831.1BJ-4China2000KP860909.1FJZ03China2015
EF641008.1JXwn06China2006MF375261.1SC-dChina2015
EF112445.1JXA1China2006MH651737.1CY2-1604China2016
HQ401282.1Shaanxi-2China2007MH651745.1SD99-1606China2016
EF635006.1HUN4China2007MT093771.1SD217-1705China2017
JN387271.1GDQY1China2007MG860516.1LNWK96China2017
FJ548853.1JXA1-P80China2008ON462049.1GXXNF74-1806China2018
HQ843180.1SD-09China2009MN648055.1HLJZD30-1902China2019
HQ843178.1HLJ-09China2009MN648449.1HLHDZD32-1901China2019
HQ315837.1SY0909China2009OL439476.1GXGG202007China2020
JQ308798.1QYYZChina2011MW880772.1SXSZ-2020China2020
JN662424.1GM2China2011OL771206.1CH/SCCD-4/2020China2020
KR706343.1JL580China2013MZ820388.1JS2021NADC34China2021
KT022071.1HNxa14China2014AY588319LV4.2.1Netherlands2004
KY373214.1JSWAChina2014EF536003.1VR-2332USA1992
KU950372.1HENXX-1China2014AY545985.1NVSLUSA1997
KP998476.1FJFSChina2015DQ988080.1IngelvacUSA2006
KU978619.1GD-KPChina2015JN654459.1NADC30USA2008
MF375260.1SD-A19China2015KT257976.1ISU29USA2014
), ArticleFig(id=1307282463848423522, tenantId=1146029695717560320, journalId=1306274286668972124, articleId=1307013142593163731, language=CN, label=表1, caption=

本研究中PRRSV参考株信息

, figureFileSmall=null, figureFileBig=null, tableContent=

登录号

Accession number

名称

Name

国家Country

年份

Year

登录号

Accession number

名称

Name

国家Country年份Year
AF176348.2PA8Canada1995KX815423.115LN1China2015
AY032626.1CH-1aChina1996KX815415.115HEN4China2015
AF331831.1BJ-4China2000KP860909.1FJZ03China2015
EF641008.1JXwn06China2006MF375261.1SC-dChina2015
EF112445.1JXA1China2006MH651737.1CY2-1604China2016
HQ401282.1Shaanxi-2China2007MH651745.1SD99-1606China2016
EF635006.1HUN4China2007MT093771.1SD217-1705China2017
JN387271.1GDQY1China2007MG860516.1LNWK96China2017
FJ548853.1JXA1-P80China2008ON462049.1GXXNF74-1806China2018
HQ843180.1SD-09China2009MN648055.1HLJZD30-1902China2019
HQ843178.1HLJ-09China2009MN648449.1HLHDZD32-1901China2019
HQ315837.1SY0909China2009OL439476.1GXGG202007China2020
JQ308798.1QYYZChina2011MW880772.1SXSZ-2020China2020
JN662424.1GM2China2011OL771206.1CH/SCCD-4/2020China2020
KR706343.1JL580China2013MZ820388.1JS2021NADC34China2021
KT022071.1HNxa14China2014AY588319LV4.2.1Netherlands2004
KY373214.1JSWAChina2014EF536003.1VR-2332USA1992
KU950372.1HENXX-1China2014AY545985.1NVSLUSA1997
KP998476.1FJFSChina2015DQ988080.1IngelvacUSA2006
KU978619.1GD-KPChina2015JN654459.1NADC30USA2008
MF375260.1SD-A19China2015KT257976.1ISU29USA2014
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基于宏转录组测序技术对一例猪繁殖与呼吸综合征病毒多谱系混合感染的鉴定与分析
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陈盼丹 1, 2, 3, 4 , 许小龙 1, 2, 3, 4 , 李慧鑫 1, 2, 3, 4 , 王良锋 1, 2, 3, 4 , 张倩君 1, 2, 3, 4 , 董亚娜 1, 2, 3, 4 , 苏佳涛 1, 2, 3, 4 , 许丹 1, 2, 3, 4 , 王衡 1, 2, 3, 4 , 龚浪 1, 2, 3, 4 , 孙彦阔 1, 2, 3, 4 , 秦锋 5
畜牧兽医学报 | 预防兽医 2026,57(2): 933-944
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畜牧兽医学报 |预防兽医 2026 , 57 (2) : 933 -944
基于宏转录组测序技术对一例猪繁殖与呼吸综合征病毒多谱系混合感染的鉴定与分析
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3.农业部人畜共患病重点实验室,广州 510642
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3.农业部人畜共患病重点实验室,广州 510642
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陈盼丹1, 2, 3, 4 , 许小龙1, 2, 3, 4, 李慧鑫1, 2, 3, 4, 王良锋1, 2, 3, 4, 张倩君1, 2, 3, 4, 董亚娜1, 2, 3, 4, 苏佳涛1, 2, 3, 4, 许丹1, 2, 3, 4, 王衡1, 2, 3, 4, 龚浪1, 2, 3, 4, 孙彦阔1, 2, 3, 4 , 秦锋5
作者信息
  • 1.华南农业大学兽医学院/广东省动物源性人兽共患病预防与控制重点实验室,广州 510642
  • 2.国家猪繁殖与呼吸综合征疫病协作实验室,广州 510642
  • 3.农业部人畜共患病重点实验室,广州 510642
  • 4.岭南现代农业疫苗创制实验室,广州 510642
  • 5.信阳市畜禽重大疫病防控综合技术研发重点实验室/信阳农林学院,信阳 464000
通讯作者:
孙彦阔,主要从事兽医传染病研究,E-mail:
秦锋,主要从事养猪生产与猪群健康管理,E-mail:
作者简介:

陈盼丹,主要从事兽医传染病和生物信息学研究,E-mail:

Identification and Analysis of a Multi-lineage Porcine Reproductive and Respiratory Syndrome Virus Co-infection Case Using Metatranscriptomic Sequencing
Pandan CHEN1, 2, 3, 4 , Xiaolong XU1, 2, 3, 4, Huixin LI1, 2, 3, 4, Liangfeng WANG1, 2, 3, 4, Qianjun ZHANG1, 2, 3, 4, Yana DONG1, 2, 3, 4, Jiatao SU1, 2, 3, 4, Dan XU1, 2, 3, 4, Heng WANG1, 2, 3, 4, Lang GONG1, 2, 3, 4, Yankuo SUN1, 2, 3, 4 , Feng QIN5
Affiliations
  • 1.College of Veterinary Medicine,South China Agricultural University/Key Laboratory of Prevention and Control of Animal-borne Zoonoses in Guangdong Province,Guangzhou 510642,China
  • 2.National Collaborative Laboratory for Porcine Reproductive and Respiratory Syndrome,Guangzhou 510642,China
  • 3.Key Laboratory of Zoonosis Prevention and Control,Ministry of Agriculture and Rural Affairs,Guangzhou 510642,China
  • 4.Lingnan Modern Agriculture Science and Technology Laboratory,Vaccine Research and Development Center,Guangzhou 510642,China
  • 5.Xinyang City Key Laboratory of Comprehensive Technology Research and Development for the Prevention and Control of Major Livestock and Poultry Diseases/Xinyang Agriculture and Forestry University,Xinyang 464000,China
  • Corresponding Author:
    SUN Yankuo, E-mail:
    QIN Feng, E-mail:
出版时间: 2026-02-23 doi: 10.11843/j.issn.0366-6964.2026.02.030
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猪繁殖与呼吸综合征病毒(PRRSV)是对中国养猪业造成重大经济损失的病原之一。目前,PRRSV-2在国内占据主导地位,呈现出多谱系共存的复杂态势,增加了防控难度。本研究旨在评估宏转录组测序技术在PRRSV-2多谱系混合感染鉴别诊断中的应用潜力。通过对四川某猪场采集的1份PRRSV-2阳性血清样品进行宏转录组测序,获得病毒的全基因组序列,并进一步结合遗传进化分析(IQ-TREE)、相似性比对(Megalign)及重组分析(RDP4/SimPlot)深入解析病毒的进化重组特征。结果显示,本研究从单一血清样品中成功鉴定出SC01-2025(15 023 bp)、SC02-2025(14 954 bp)、SC03-2025(15 293 bp)共3株PRRSV-2,它们的进化分群分别属于谱系1.8、谱系3和谱系8.7。其中,SC01-2025为谱系1.8(代表株NADC30)与谱系5(代表株VR2332)的重组株,其全基因组与NADC30株相似性为88.09%,但在NSP3~7、NSP9~12及ORF3区域与VR2332株相似性更高;SC02-2025为三谱系重组株(谱系1.8/3/8.7),该株在NSP2和NSP3区域与NADC30株最相似,在NSP1、NSP7~10与JXA1株最相似,剩下的区域则与QYYZ株最相似;SC03-2025与JXA1-P80疫苗株全基因组相似性达99%,未检测到重组。本研究基于宏转录组测序技术精准识别出1例四川某猪场PRRSV多谱系混合感染,揭示了该猪场疫苗株(JXA1-P80)与野毒株(类NADC30株、类QYYZ株)共存的复杂流行情况,研究结果表明宏转录组测序技术可为PRRSV疫病诊断和监测提供高分辨率技术支撑。

猪繁殖与呼吸综合征病毒  /  多谱系混合感染  /  宏转录组测序技术  /  基因重组

Porcine reproductive and respiratory syndrome virus (PRRSV) remains a pathogen causing substantial economic losses to China’s swine industry. Porcine reproductive and respiratory syndrome virus type 2 (PRRSV-2) currently predominates in China, exhibiting a complex epidemiological pattern characterized by co-circulating multiple lineages, which significantly complicates disease control measures. This study aimed to evaluate the diagnostic potential of metatranscriptomic sequencing in discriminating PRRSV-2 mixed infections involving multiple lineages. A PRRSV-2-positive serum sample collected from a swine farm in Sichuan Province was subjected to metatranscriptomic sequencing. This approach successfully recovered complete viral genome sequences. Subsequent comprehensive analysis, including phylogenetic reconstruction (IQ-TREE), similarity comparison (Megalign), and recombination analysis (RDP4/SimPlot), was employed to elucidate the evolutionary and recombination characteristics of the viruses. The results demonstrate the successful identification of three distinct PRRSV-2 strains from this single serum sample: SC01-2025 (15 023 bp), SC02-2025 (14 954 bp), and SC03-2025 (15 293 bp)—the phylogenetic classification assigned these strains to lineages 1.8, 3, and 8.7, respectively.SC01-2025 was identified as a recombinant between lineage 1.8 (NADC30) and lineage 5 (VR2332). While its full genome shared 88.09% nucleotide similarity with the NADC30 strain, regions encompassing NSP3-7, NSP9-12, and ORF3 exhibited higher similarity to the VR2332 strain. SC02-2025 was found to be a triple-recombinant virus (lineages 1.8/3/8.7). This strain displayed the highest similarity to the NADC30 strain within the NSP2 and NSP3 regions, to the JXA1 strain within NSP1 and NSP7-10 regions, and the QYYZ strain in the remaining genomic segments. SC03-2025 showed 99% full-genome nucleotide similarity to the JXA1-P80 vaccine strain, with no evidence of recombination detected. This study, leveraging metatranscriptomic sequencing, precisely identified a mixed infection involving multiple PRRSV-2 lineages within a single pig farm in Sichuan. It revealed the complex epidemiological scenario involving the concurrent presence of a vaccine strain (JXA1-P80) and field strains (NADC30-like and QYYZ-like viruses). These findings demonstrate that metatranscriptomic sequencing provides high-resolution diagnostic support for PRRSV disease surveillance and monitoring.

porcine reproductive and respiratory syndrome virus  /  multi-lineage co-infection  /  metatranscriptomic sequencing  /  genetic recombination
陈盼丹, 许小龙, 李慧鑫, 王良锋, 张倩君, 董亚娜, 苏佳涛, 许丹, 王衡, 龚浪, 孙彦阔, 秦锋. 基于宏转录组测序技术对一例猪繁殖与呼吸综合征病毒多谱系混合感染的鉴定与分析. 畜牧兽医学报, 2026 , 57 (2) : 933 -944 . DOI: 10.11843/j.issn.0366-6964.2026.02.030
Pandan CHEN, Xiaolong XU, Huixin LI, Liangfeng WANG, Qianjun ZHANG, Yana DONG, Jiatao SU, Dan XU, Heng WANG, Lang GONG, Yankuo SUN, Feng QIN. Identification and Analysis of a Multi-lineage Porcine Reproductive and Respiratory Syndrome Virus Co-infection Case Using Metatranscriptomic Sequencing[J]. Acta Veterinaria et Zootechnica Sinica, 2026 , 57 (2) : 933 -944 . DOI: 10.11843/j.issn.0366-6964.2026.02.030
猪繁殖与呼吸综合征病毒(porcine reproductive and respiratory syndrome virus,PRRSV)属于动脉炎病毒科,β-动脉炎病毒属,是一种有包膜的单股正链RNA病毒,具有高度传染性和显著的遗传多样性,可诱导宿主产生免疫抑制,并在感染动物体内形成持续性感染[1⁃2]。根据基因组差异,PRRSV被划分为欧洲型(PRRSV-1)和美洲型(PRRSV-2)[3]。基于病毒ORF5基因系统发育关系,PRRSV-2又可以进一步分为谱系1~谱系9[4]。当前,我国以PRRSV-2的流行占据主要地位,呈现出谱系1(NADC30和NADC34)、谱系3(QYYZ和GM2)、谱系5(VR2332)和谱系8(JXA1和CH-1a)多谱系共存的局面[5⁃7]。PRRSV基因组呈现出较高的变异速率和较强的重组倾向,新型变异株和重组株不断出现,使得我国PRRSV的流行情况更加复杂,这也对精准诊断技术提出了更高要求[8]。
目前PRRSV的监测和诊断方法主要包括血清学检测和病原核酸检测。其中,酶联免疫吸附试验(ELISA)、血清病毒中和试验(SVN)和间接免疫荧光试验(IFA)等血清学检测技术虽已广泛应用于临床监测,但抗体交叉反应会干扰疫苗免疫和野毒株感染的鉴别诊断[9]。在病原核酸检测方面,基于PCR原理的检测方法如实时荧光定量反转录PCR(RT-qPCR),通过靶向PRRSV基因组设计引物或探针,具有高特异、高灵敏、快速便捷的优点[10]。但这些方法依赖于参考株和保守序列,往往无法对新发株和变异株做到有效覆盖[11]。同时,这种仅针对PRRSV部分基因的监测和诊断所能提供的信息有限,不能够完全反映病毒的遗传进化关系和重组情况,难以满足病毒溯源、揭示变异规律等相关研究和PRRSV防控的需求。宏转录组测序技术通过无偏倚捕获样本中全部核酸信息,无需依赖已知序列设计引物,即可全面鉴定样品中的病原微生物组成并获取其基因序列[12]。该技术具有高灵敏性和广泛的检测范围,可以为病原微生物流行病学等相关研究提供数据信息,在畜禽疫病诊断监测领域发挥着愈发重要的作用[13⁃15]。
本研究从四川某猪场收集到1份疑似感染PRRSV的血清样品,经过RT-qPCR初步鉴定为PRRSV阳性后,对样品进行宏转录组测序并结合生物信息学方法获取到样品中所包含的PRRSV全基因组序列。进一步结合GenBank数据库中的PRRSV参考序列对测序所得PRRSV进行系统发育分析、相似性分析和重组分析,识别出样品中PRRSV多谱系混合感染的现象并解析出各株PRRSV的遗传进化特点,为猪场精准防控提供了流行病学参考依据。
从四川省某具有高致病性PRRSV(HP-PRRSV)疫苗免疫史的猪场采集1份疑似感染PRRSV病猪的血清样品,随后低温运送至华南农业大学兽医学院动物疫病高通量诊断中心。采用Virus DNA/RNA Extraction Kit 2.0(Vazyme,货号:RM401-01)对血清样品中的核酸进行提取纯化,获取总病原核酸后,使用广东海大畜牧兽医研究院有限公司生产的猪繁殖与呼吸综合征病毒(PRRSV-1、2型)RT-qPCR检测试剂盒(批号:2501020)进行病毒核酸检测。
使用Qubit试剂(Equalbit RNA HS Assay Kit,Vazyme)精确测定上一步提取的RNA浓度。随后按照VAHTS Universal V8 RNA-seq Library Prep Kit for MGI(Vazyme)建库试剂盒说明书的体系和反应程序构建测序文库:利用DNA消化酶和磁珠纯化去除总RNA中污染的DNA;通过镁离子打断将RNA随机片段化后使用探针法(Ribo-off rRNA Depletion Kit,Vazyme)去除核糖体RNA,再投入随机引物合成一链cDNA;接着进行cDNA二链合成、末端修复及dA尾添加;投入MGI特异性测序接头与文库连接,并通过两轮磁珠筛选保留长度在200与500 bp区间的文库片段;最后进行文库扩增与磁珠纯化。
文库构建完成后使用Invitrogen Qubit 4荧光仪(Thermo Fisher Scientific)和Qsep100全自动核酸蛋白分析系统(光鼎生物)对文库进行双链核酸浓度和片段分布质检,要求文库双链核酸浓度≥6 ng·μL-1,片段分布在300~500 bp区间。将符合质量标准的文库进行DNA变性、环化和消化,得到单链环状DNA。单链环状DNA通过滚环扩增技术(rolling circle amplification,RCA)得到DNA纳米球(DNA nano ball,DNB),使用Invitrogen Qubit 4荧光仪(Thermo Fisher Scientific)进行定量质控,要求文库浓度>2 fmol·μL-1。将DNB加载至华大智造MGISEQ-200测序芯片,采用联合探针锚定聚合技术(combinatorial probe-anchor synthesis,cPAS)进行双端150碱基对(PE150)测序,平均测序深度≥100 X,单样本数据分配量≥6 Gb。
对双末端原始测序数据使用FastQC(V 0.12.1)软件进行测序质量评估,明确原始数据的质量分布特征并制定预处理方案。随后通过Trimmomatic(V 0.39)软件进行深度数据清洗过滤,通过移除接头序列、截除reads(读段)两端低置信度碱基、过滤长度不足50 bp的低质量reads,最终获得Clean reads(质控后的高质量短序列片段,Q30在90%以上)。使用Kraken2(V 2.1.3)工具对质控后的宏转录组数据进行分类并提取出被分类到病毒的reads。对这些reads使用MEGAHIT(V 1.2.9)软件进行无参考基因组(de novo)组装,采用de Bruijn graph(dBg)策略,通过滑动大小为k的窗口将reads分解为重叠的k-mers(长度为k的核苷酸片段),每个k-mer作为图中的节点,若一个k-mer的后k-1个碱基与另一个k-mer的前k-1个碱基重叠,则通过有向边连接这两个节点。通过遍历图中的线性路径生成contigs(重叠群,即连续序列片段)。设定组装最小长度阈值为500 bp以排除短片段干扰。将组装所得contigs与本实验室构建的PRRSV参考数据库进行BLASTn(BLAST 2.15.0)序列比对,最终筛选出与PRRSV参考数据库核苷酸相似性≥60%,E-value≤1×10-6的contigs,并以全基因组无缺失的VR2332(EF536003.1)为参考株进行序列的真实性和完整性验证。
为了了解该猪场PRRSV的遗传进化关系,从NCBI GenBank数据库下载了一些PRRSV-2各谱系的代表性序列和PRRSV-1的代表性序列作为参考(表1)。使用MAFFT(V 7.525)软件分别进行全基因组和ORF5基因多序列比对,随后利用TrimAL(V 0.12.1)软件裁剪掉低质量比对区域。接着在IQ-TREE(V 2.3.0)软件(bootstrap值为1 000)中分别构建全基因组与ORF5基因的最大似然系统发育树。最后使用FigTree软件进行可视化。利用Megalign(V 7.1.0)对测序所得PRRSV与各谱系的代表株(NADC30(MH500776.1)、NADC34(MF326985.1)、QYYZ(JQ308798.1)、VR2332(EF536003.1)、JXA1(EF112445.1))的全基因组和各功能区域的核苷酸序列进行相似性分析。
为了评估所测得的PRRSV全基因组序列潜在的重组事件,笔者以NADC30(MH500776.1)、NADC34(MF326985.1)、QYYZ(JQ308798.1)、VR2332(EF536003.1)、JXA1(EF112445.1)株的全基因组序列为参考序列,利用RDP4(V 4.10.1)软件中的RDP、GENECONV、BootScan、Maxchi、Chimaera、SiScan和3Seq共7种方法对测序所得PRRSV序列进行重组检测,当至少5种算法检测到重组信号(P<0.01)时判定为潜在重组事件。进一步使用SimPlot软件进行全基因组尺度的滑动窗口分析,设置窗口大小为500 bp,步长为20 bp。若检测到潜在重组断点,则针对断点分割的区域序列构建最大似然系统发育树,以验证重组事件的可靠性。
对四川省某猪场的1份疑似感染PRRSV的血清样品采用RT-qPCR方法检测PRRSV,结果显示样品呈PRRSV-2阳性。通过对宏转录组测序数据进行无参考基因组(de novo)组装,并对获得的contigs进行注释,得到了3条PRRSV-2序列,长度分别为15 023、14 954、15 293 bp,并分别命名为SC01-2025、SC02-2025、SC03-2025。为了探究测序所得PRRSV的基因组完整情况和样品混合感染情况,选取VR2332(EF536003.1)参考株进行序列比对分析(图1)。结果显示,这3株PRRSV的ORF区域功能结构完整,仅在nsp2基因处存在特异性缺失。SC01-2025、SC02-2025和SC03-2025与VR2332(EF536003.1)株全基因组相似性分别为85.13%、80.49%、87.21%,相似性的差异表明样品中存在多株PRRSV的混合感染。进一步使用Megalign对3株测序所得PRRSV与PRRSV参考株的NSP2氨基酸序列进行比对分析,结果显示,SC01-2025和SC02-2025在NSP2蛋白上表现出与类NADC30株相同的“111+1+19aa”不连续氨基酸缺失模式,SC03-2025则为“1+29aa”缺失模式,该模式与以JXA1株为代表的高致病性PRRSV的NSP2氨基酸缺失特征一致。
基于全基因组和ORF5基因序列构建的系统发育树显示,3株PRRSV分别属于不同谱系(图2)。其中,SC01-2025株属于以NADC30株为代表的谱系1.8,为类NADC30株;SC02-2025株属于谱系3,该谱系以GM2、QYYZ株为代表株;SC03-2025株则属于谱系8.7,与JXA1-P80疫苗株有最近的遗传进化距离。值得注意的是,在ORF5基因的遗传进化树中,SC01-2025和SC02-2025株均与同谱系PRRSV参考株聚簇,但在全基因组遗传进化树中两者却均各自形成了一个独立分支。这表明SC01-2025和SC02-2025株全基因组发生了较大的遗传变异,可能是基因重组所致。综上,样品中存在PRRSV三谱系混合感染,SC01-2025和SC02-2025株可能存在重组事件,SC03-2025可能为JXA1-P80疫苗株。
使用Megalign将3株测序所得PRRSV分别与PRRSV-2常见谱系代表株(NADC30(MH500776.1)、NADC34(MF326985.1)、QYYZ(JQ308798.1)、VR2332(EF536003.1)、JXA1(EF112445.1))的全基因组和各个区域进行相似性分析。结果显示,SC01-2025、SC02-2025、SC03-2025与代表株的全基因组相似性范围分别为81.60%~88.09%、80.49%~83.26%、80.60%~98.39%。其中,SC01-2025与NADC30(MH500776.1)株全基因组相似性最高为88.09%,但在其NSP3、NSP4、NSP5、NSP6、NSP7、NSP9、NSP10、NSP11、NSP12以及ORF3这些区域则与VR2332(EF536003.1)株有最高的相似性;SC02-2025全基因组与NADC30(MH500776.1)株最相似,但两者相似性仅为83.26%,其NSP2和NSP3区域与NADC30(MH500776.1)株最相似,NSP1、NSP7、NSP8、NSP9、NSP10与JXA1(EF112445.1)株最相似,剩下的区域则与QYYZ(JQ308798.1)株最相似;SC03-2025全基因组与JXA1(EF112445.1)株相似性最高为98.39%,而与JXA1-P80疫苗株(由JXA1原始株经Marc-145细胞传代80次致弱获得)相似性为99%。这一差异表明,SC03-2025更接近JXA1-P80疫苗株,可能是疫苗株田间演化或传代积累变异的结果。根据以上结果进一步推测SC01-2025和SC02-2025可能存在基因重组事件,而SC03-2025则为与JXA1-P80疫苗株高度同源的变异株。
PRRSV基因重组事件可能影响病毒的毒力和免疫逃逸,对于病毒进化至关重要。为了进一步了解该猪场PRRSV的重组特征,使用RDP4和SimPlot进行重组分析。结果显示SC01-2025和SC02-2025存在重组信号,而SC03-2025无重组事件发生。其中,SC01-2025全基因组检测出6个重组断点,将其分为7个基因区域,a(1~5 276 nt)、b(5 277~7 302 nt)、c(7 303~7 831 nt)、d(7 832~11 902 nt)、e(11 903~12 711 nt)、f(12 712~13 196 nt)、g(13 197~15 023 nt)。对以上区域分别构建最大似然发育树,结果显示a、c、e、g基因区域与NADC30(MH500776.1)株有最近的遗传距离,b、d、f基因区域与VR2332(EF536003.1)株有最近的遗传距离(图3)。SC02-2025全基因组序列中共识别出5个重组断点,可分为6个基因区域,a(1~702 nt)、b(703~2 011 nt)、c(2 012~5 699 nt)、d(5 700~7 307 nt)、e(7 308~11 024 nt)、f(11 025~14 954 nt)。系统发育树结果显示,a、c基因区域与NADC30(MH500776.1)株有最近的遗传距离,b、e基因区域与JXA1(EF112445.1)株有最近的遗传距离,d、f基因区域则与QYYZ(JQ308798.1)株有最近的遗传距离(图4)。SC03-2025中未检测到重组断点(图5)。以上重组结果表明,SC01-2025是以NADC30(MH500776.1)株为病毒骨架与VR2332(EF536003.1)株重组而成;SC02-2025为NADC30(MH500776.1)株、JXA1(EF112445.1)株和QYYZ(JQ308798.1)株发生复杂重组变异形成的三谱系重组株;SC03-2025未发生基因重组。
目前,我国主要以PRRSV-2流行为主,呈现出谱系1、谱系3、谱系5、谱系8多谱系共存的局面[16]。PRRSV的长期潜伏和持续感染特性为多谱系混合感染和病毒重组提供了温床[17]。本研究通过下一代测序技术(Next-generation sequencing,NGS)结合高通量平台开展宏转录组测序,成功在四川某猪场的1份血清样品中获得PRRSV全基因组序列,并识别出该样品存在三谱系(谱系1.8/3/8.7)混合感染、重组株与疫苗株共存的现象。这一结果显示出该技术在PRRSV复杂感染情景鉴定中的应用价值。已有研究表明,当前猪场PRRSV多谱系混合感染存在普遍性[18],导致临床防控难度加大,对猪场的生产造成严重危害[19⁃21]。同时,基因重组促使新变异株的产生,并显著影响病毒毒力和病原学特性[22⁃23]。我国PRRSV-2主要的重组谱系包括谱系1、谱系3和谱系8.7,其中,近80%的谱系1毒株参与了重组事件[24],本研究得到的谱系1毒株也表现出高频重组特点,需要警惕由此引发的潜在流行风险[25⁃27]。因此加强对猪场PRRSV流行株全基因组的动态监测且及时明确PRRSV谱系和感染状态,对于制定精准防控方案、降低经济损失具有重要意义。
为了预防和控制PRRSV的传播和流行,自2010年以来,包括JXA1(P80)、HuN4-F112(P120)和TJM(P90)等在内的多种HP-PRRSV商业活疫苗被广泛使用,也由此引发了对疫苗株毒力返强和重组事件的担忧[28-29]。有最新研究报道市面上常见的疫苗株JXA1-P80和JXA1-R出现了氨基酸突变导致毒力返强的现象[30]。本研究中SC03-2025株与JXA1-P80疫苗株高度同源,通过宏转录组测序技术对其全基因组的测定,为监测疫苗株在田间的演化带来了全新的视角。本研究还发现疫苗株和野毒株共感染的情况。多株PRRSV的混合感染为病毒重组提供了温床,由疫苗株与田间野生型毒株产生的重组株的毒力和致病性可能会高于亲本毒株,从而引发猪场更加严重的生产损失[31]。这要求人们持续监测和追踪猪群中毒株流行情况,从而采用合适的疫苗接种策略以尽量规避这些风险。
NGS(如Illumina和MGI等二代测序平台)通过短读长高通量测序,具有高准确率,低成本等优势,广泛应用于生态学、临床病毒学、畜牧兽医等研究领域[32⁃34]。本研究采用MGI纳米球测序技术,通过单链环状DNA经滚环扩增(RCA)生成DNA纳米球(DNB),减少了扩增偏差,提高了测序均匀性和准确性。基于NGS平台的宏转录组测序在猪场疫情监测中展现出显著的优势,但其应用也面临特定挑战,尤其是猪场多病原和多毒株混合感染方面。宏转录组测序获得的数据庞大且复杂,目前,从测序数据组装基因组主要采用两种策略:有参拼接(reference-based assembly)和无参拼接(de novo assembly)。在混合感染样本分析中,使用有参拼接可能因不同菌/毒株的比例差异大,从而导致生成的一致性序列(consensus sequence)不准确。无参拼接不依赖参考基因组,能够更好地处理混合样本中的不同菌/毒株[35]。通过无参拼接,可以生成每个株的独立基因组序列,从而避免因参考基因组偏差导致的错误。本研究采用无参考基因组(de novo)拼接和多k-mer迭代组装策略有助于优化组装完整性和真实性,最终成功获得不同谱系PRRSV株的完整基因组,说明宏转录组测序在鉴别PRRSV不同谱系混合感染具有可行性。
总的来说,本研究充分利用宏转录组测序技术的无偏倚性和高分辨率优势,通过无参拼接成功在四川某猪场的单一样本中鉴定出PRRSV-2三谱系(谱系1.8/3/8.7)混合感染及重组事件。通过解析SC01-2025(双谱系重组)和SC02-2025(三谱系重组)的复杂重组模式,为重组研究积累了全基因组数据。SC03-2025与JXA1-P80疫苗株高度同源(99%),其与野毒株共存的局面提示了疫苗株田间重组的风险。这些结果充分证明了宏转录组测序技术突破传统PCR对多株PRRSV混合感染的检测局限,可实现全基因组层面的病毒特征解析,为优化免疫策略提供数据支撑,为提升猪群健康管理的检测效率和疫病防控净化提供精准的技术手段[36]。同时,本研究也存在一定的局限性,首先,分析基于四川某猪场的单一份血清样本,虽然宏转录组测序技术在其中揭示了复杂的多谱系混合感染和重组事件,但难以反映该猪场PRRSV流行的全貌。其次,本研究仅在单一时间节点进行了采样和分析,未能追踪到PRRSV在该猪场的动态演变过程。这些因素限制了笔者对本次发现的重组株的来源、传播路径及其在猪场内流行病学意义的更深入解读。未来研究应扩大样本量、进行猪群纵向和横向监测,并结合流行病学调查,以更全面地评估PRRSV多谱系混合感染和重组的动态及其对猪群健康和生产的影响。
本研究利用宏转录组测序技术发现了四川某猪场单一样本中PRRSV-2多谱系混合感染的现象,阐明了样品中PRRSV的遗传进化特征,为PRRSV-2的防控提供了全基因组层面的数据支持。
  • 广东省现代农业产业技术体系创新团队(2024CXTD22)
  • 华南农业大学高校学科建设专项(2023B10564003)
  • 广东省现代农业产业共性关键技术研发创新团队建设项目(生物安全与防控(动物方向)共性关键技术)(2024CXTD15)
  • 广东省普通高校青年创新人才项目(2017KQNCX012)
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2026年第57卷第2期
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doi: 10.11843/j.issn.0366-6964.2026.02.030
  • 接收时间:2025-06-10
  • 首发时间:2026-09-16
  • 出版时间:2026-02-23
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  • 收稿日期:2025-06-10
基金
广东省现代农业产业技术体系创新团队(2024CXTD22)
华南农业大学高校学科建设专项(2023B10564003)
广东省现代农业产业共性关键技术研发创新团队建设项目(生物安全与防控(动物方向)共性关键技术)(2024CXTD15)
广东省普通高校青年创新人才项目(2017KQNCX012)
作者信息
    1.华南农业大学兽医学院/广东省动物源性人兽共患病预防与控制重点实验室,广州 510642
    2.国家猪繁殖与呼吸综合征疫病协作实验室,广州 510642
    3.农业部人畜共患病重点实验室,广州 510642
    4.岭南现代农业疫苗创制实验室,广州 510642
    5.信阳市畜禽重大疫病防控综合技术研发重点实验室/信阳农林学院,信阳 464000

通讯作者:

孙彦阔,主要从事兽医传染病研究,E-mail:
秦锋,主要从事养猪生产与猪群健康管理,E-mail:
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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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