Genetic variation of NBS-LRR class resistance genes in rice lines
Identifieur interne : 001269 ( Istex/Corpus ); précédent : 001268; suivant : 001270Genetic variation of NBS-LRR class resistance genes in rice lines
Auteurs : Sihai Yang ; Tingting Gu ; Chunyu Pan ; Zhumei Feng ; Jing Ding ; Yueyu Hang ; Jian-Qun Chen ; Dacheng TianSource :
- Theoretical and Applied Genetics [ 0040-5752 ] ; 2008.
Abstract
Abstract: The use of plant disease resistance (R) genes in breeding programs needs an understanding of their variation patterns. In our current study, we investigated the polymorphisms of 44 NBS-LRR class R-genes among 21 rice cultivars and 14 wild rice populations. Our data suggested that there were four basic types of variations: conserved, diversified, intermediate-diversified, and present/absent patterns. Common characteristics at a locus of conserved R-genes were: copy-number uniformity, clear divergence (long branches) with other paralogs, and highly identical alleles. On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified R-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an R-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent R-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that R-genes were under strong selection, which shaped R-gene variation patterns.
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DOI: 10.1007/s00122-007-0656-4
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China</mods:affiliation></affiliation></author><author><name sortKey="Chen, Jian Qun" sort="Chen, Jian Qun" uniqKey="Chen J" first="Jian-Qun" last="Chen">Jian-Qun Chen</name><affiliation><mods:affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: chenjq@nju.edu.cn</mods:affiliation></affiliation></author><author><name sortKey="Tian, Dacheng" sort="Tian, Dacheng" uniqKey="Tian D" first="Dacheng" last="Tian">Dacheng Tian</name><affiliation><mods:affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: dtian@nju.edu.cn</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno 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Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</mods:affiliation></affiliation></author><author><name sortKey="Hang, Yueyu" sort="Hang, Yueyu" uniqKey="Hang Y" first="Yueyu" last="Hang">Yueyu Hang</name><affiliation><mods:affiliation>Jiangsu Province & Chinese Academy of Science, Institute of Botany, 210014, Nanjing, China</mods:affiliation></affiliation></author><author><name sortKey="Chen, Jian Qun" sort="Chen, Jian Qun" uniqKey="Chen J" first="Jian-Qun" last="Chen">Jian-Qun Chen</name><affiliation><mods:affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: chenjq@nju.edu.cn</mods:affiliation></affiliation></author><author><name sortKey="Tian, Dacheng" sort="Tian, Dacheng" uniqKey="Tian D" first="Dacheng" last="Tian">Dacheng Tian</name><affiliation><mods:affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: dtian@nju.edu.cn</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Theoretical and Applied Genetics</title><title level="j" type="abbrev">Theor Appl Genet</title><idno type="ISSN">0040-5752</idno><idno type="eISSN">1432-2242</idno><imprint><publisher ref="https://scientific-publisher.data.istex.fr/ark:/67375/H02-SWLMH5L1-1">Springer-Verlag</publisher><pubPlace>Berlin/Heidelberg</pubPlace><date type="published" when="2008">2008</date><biblScope unit="vol" from="116" to="116">116</biblScope><biblScope unit="issue" from="2" to="2">2</biblScope><biblScope unit="page" from="165">165</biblScope><biblScope unit="page" to="177">177</biblScope></imprint><idno type="ISSN">0040-5752</idno></series></biblStruct></sourceDesc><seriesStmt><idno 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In our current study, we investigated the polymorphisms of 44 NBS-LRR class R-genes among 21 rice cultivars and 14 wild rice populations. Our data suggested that there were four basic types of variations: conserved, diversified, intermediate-diversified, and present/absent patterns. Common characteristics at a locus of conserved R-genes were: copy-number uniformity, clear divergence (long branches) with other paralogs, and highly identical alleles. On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified R-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an R-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent R-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that R-genes were under strong selection, which shaped R-gene variation patterns.</div></front></TEI><istex><corpusName>springer-journals</corpusName><author><json:item><name>Sihai Yang</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string></affiliations></json:item><json:item><name>Tingting Gu</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string></affiliations></json:item><json:item><name>Chunyu Pan</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string></affiliations></json:item><json:item><name>Zhumei Feng</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string></affiliations></json:item><json:item><name>Jing Ding</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string></affiliations></json:item><json:item><name>Yueyu Hang</name><affiliations><json:string>Jiangsu Province & Chinese Academy of Science, Institute of Botany, 210014, Nanjing, China</json:string></affiliations></json:item><json:item><name>Jian-Qun Chen</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string><json:string>E-mail: chenjq@nju.edu.cn</json:string></affiliations></json:item><json:item><name>Dacheng Tian</name><affiliations><json:string>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</json:string><json:string>E-mail: dtian@nju.edu.cn</json:string></affiliations></json:item></author><articleId><json:string>656</json:string><json:string>s00122-007-0656-4</json:string></articleId><arkIstex>ark:/67375/VQC-1CVRVPNJ-9</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>OriginalPaper</json:string></originalGenre><abstract>Abstract: The use of plant disease resistance (R) genes in breeding programs needs an understanding of their variation patterns. In our current study, we investigated the polymorphisms of 44 NBS-LRR class R-genes among 21 rice cultivars and 14 wild rice populations. Our data suggested that there were four basic types of variations: conserved, diversified, intermediate-diversified, and present/absent patterns. Common characteristics at a locus of conserved R-genes were: copy-number uniformity, clear divergence (long branches) with other paralogs, and highly identical alleles. On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified R-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an R-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent R-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that R-genes were under strong selection, which shaped R-gene variation patterns.</abstract><qualityIndicators><score>7.388</score><pdfWordCount>7695</pdfWordCount><pdfCharCount>48707</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>13</pdfPageCount><pdfPageSize>595 x 791 pts</pdfPageSize><refBibsNative>false</refBibsNative><abstractWordCount>199</abstractWordCount><abstractCharCount>1354</abstractCharCount><keywordCount>0</keywordCount><pdfWordsPerPage>592</pdfWordsPerPage><pdfText>true</pdfText></qualityIndicators><title>Genetic variation of NBS-LRR class resistance genes in rice lines</title><genre><json:string>article</json:string></genre><host><title>Theoretical and Applied 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Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author><persName><forename type="first">Tingting</forename><surname>Gu</surname></persName><affiliation><orgName type="department">State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author><persName><forename type="first">Chunyu</forename><surname>Pan</surname></persName><affiliation><orgName type="department">State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author><persName><forename type="first">Zhumei</forename><surname>Feng</surname></persName><affiliation><orgName type="department">State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author><persName><forename type="first">Jing</forename><surname>Ding</surname></persName><affiliation><orgName type="department">State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author><persName><forename type="first">Yueyu</forename><surname>Hang</surname></persName><affiliation><orgName type="department">Jiangsu Province & Chinese Academy of Science</orgName><orgName type="institution">Institute of Botany</orgName><address><settlement>Nanjing</settlement><postCode>210014</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author role="corresp"><persName><forename type="first">Jian-Qun</forename><surname>Chen</surname></persName><email>chenjq@nju.edu.cn</email><affiliation><orgName type="department">State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</orgName><orgName type="institution">Nanjing University</orgName><address><settlement>Nanjing</settlement><postCode>210093</postCode><country key="CN" xml:lang="en">CHINA</country></address></affiliation></author><author role="corresp"><persName><forename 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On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified <hi rend="italic">R</hi>-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an <hi rend="italic">R</hi>-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent <hi rend="italic">R</hi>-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that <hi rend="italic">R</hi>-genes were under strong selection, which shaped <hi rend="italic">R</hi>-gene variation patterns.</p></abstract><textClass ana="subject"><keywords scheme="journal-subject"><list><item><term type="Primary">Life Sciences</term></item><item><term type="Secondary">Biotechnology</term></item><item><term type="Secondary">Biochemistry, general</term></item><item><term type="Secondary">Plant Biochemistry</term></item><item><term type="Secondary">Agriculture</term></item><item><term type="Secondary">Plant Genetics & Genomics</term></item><item><term type="Secondary">Plant Breeding/Biotechnology</term></item></list></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc><revisionDesc><change when="2020-05-28" who="#istex" xml:id="pub2tei">formatting</change><change when="2007-09-24">Registration</change><change when="2007-02-06">Received</change><change when="2007-09-21">Accepted</change><change when="2007-10-12">ePublished</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/ark:/67375/VQC-1CVRVPNJ-9/fulltext.txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="corpus springer-journals not found" wicri:toSee="no header"><istex:xmlDeclaration>version="1.0" encoding="UTF-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//Springer-Verlag//DTD A++ V2.4//EN" URI="http://devel.springer.de/A++/V2.4/DTD/A++V2.4.dtd" name="istex:docType"></istex:docType><istex:document><Publisher><PublisherInfo><PublisherName>Springer-Verlag</PublisherName><PublisherLocation>Berlin/Heidelberg</PublisherLocation></PublisherInfo><Journal OutputMedium="All"><JournalInfo JournalProductType="ArchiveJournal" NumberingStyle="Unnumbered"><JournalID>122</JournalID><JournalPrintISSN>0040-5752</JournalPrintISSN><JournalElectronicISSN>1432-2242</JournalElectronicISSN><JournalTitle>Theoretical and Applied Genetics</JournalTitle><JournalSubTitle>International Journal of Plant Breeding Research</JournalSubTitle><JournalAbbreviatedTitle>Theor Appl Genet</JournalAbbreviatedTitle><JournalSubjectGroup><JournalSubject Type="Primary">Life Sciences</JournalSubject><JournalSubject Type="Secondary">Biotechnology</JournalSubject><JournalSubject Type="Secondary">Biochemistry, general</JournalSubject><JournalSubject Type="Secondary">Plant Biochemistry</JournalSubject><JournalSubject Type="Secondary">Agriculture</JournalSubject><JournalSubject Type="Secondary">Plant Genetics & Genomics</JournalSubject><JournalSubject Type="Secondary">Plant Breeding/Biotechnology</JournalSubject></JournalSubjectGroup></JournalInfo><Volume OutputMedium="All"><VolumeInfo TocLevels="0" VolumeType="Regular"><VolumeIDStart>116</VolumeIDStart><VolumeIDEnd>116</VolumeIDEnd><VolumeIssueCount>8</VolumeIssueCount></VolumeInfo><Issue IssueType="Regular" OutputMedium="All"><IssueInfo IssueType="Regular" TocLevels="0"><IssueIDStart>2</IssueIDStart><IssueIDEnd>2</IssueIDEnd><IssueArticleCount>13</IssueArticleCount><IssueHistory><OnlineDate><Year>2007</Year><Month>12</Month><Day>18</Day></OnlineDate><PrintDate><Year>2007</Year><Month>12</Month><Day>18</Day></PrintDate><CoverDate><Year>2008</Year><Month>1</Month></CoverDate></IssueHistory><IssueCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>2008</CopyrightYear></IssueCopyright></IssueInfo><Article ID="s00122-007-0656-4" OutputMedium="All"><ArticleInfo ArticleType="OriginalPaper" ContainsESM="Yes" Language="En" NumberingStyle="Unnumbered" TocLevels="0"><ArticleID>656</ArticleID><ArticleDOI>10.1007/s00122-007-0656-4</ArticleDOI><ArticleCitationID>165</ArticleCitationID><ArticleSequenceNumber>2</ArticleSequenceNumber><ArticleTitle Language="En" OutputMedium="All">Genetic variation of NBS-LRR class resistance genes in rice lines</ArticleTitle><ArticleCategory>Original Paper</ArticleCategory><ArticleFirstPage>165</ArticleFirstPage><ArticleLastPage>177</ArticleLastPage><ArticleHistory><RegistrationDate><Year>2007</Year><Month>9</Month><Day>24</Day></RegistrationDate><Received><Year>2007</Year><Month>2</Month><Day>6</Day></Received><Accepted><Year>2007</Year><Month>9</Month><Day>21</Day></Accepted><OnlineDate><Year>2007</Year><Month>10</Month><Day>12</Day></OnlineDate></ArticleHistory><ArticleEditorialResponsibility>D. A. Lightfoot</ArticleEditorialResponsibility><ArticleCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>2007</CopyrightYear></ArticleCopyright><ArticleGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ArticleGrants></ArticleInfo><ArticleHeader><AuthorGroup><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Sihai</GivenName><FamilyName>Yang</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Tingting</GivenName><FamilyName>Gu</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Chunyu</GivenName><FamilyName>Pan</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Zhumei</GivenName><FamilyName>Feng</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Jing</GivenName><FamilyName>Ding</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff2"><AuthorName DisplayOrder="Western"><GivenName>Yueyu</GivenName><FamilyName>Hang</FamilyName></AuthorName></Author><Author AffiliationIDS="Aff1" CorrespondingAffiliationID="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Jian-Qun</GivenName><FamilyName>Chen</FamilyName></AuthorName><Contact><Phone>+86-25-83686406</Phone><Fax>+86-25-83594720</Fax><Email>chenjq@nju.edu.cn</Email></Contact></Author><Author AffiliationIDS="Aff1" CorrespondingAffiliationID="Aff1"><AuthorName DisplayOrder="Western"><GivenName>Dacheng</GivenName><FamilyName>Tian</FamilyName></AuthorName><Contact><Phone>+86-25-83686406</Phone><Fax>+86-25-83594720</Fax><Email>dtian@nju.edu.cn</Email></Contact></Author><Affiliation ID="Aff1"><OrgDivision>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology</OrgDivision><OrgName>Nanjing University</OrgName><OrgAddress><City>Nanjing</City><Postcode>210093</Postcode><Country Code="CN">China</Country></OrgAddress></Affiliation><Affiliation ID="Aff2"><OrgDivision>Jiangsu Province & Chinese Academy of Science</OrgDivision><OrgName>Institute of Botany</OrgName><OrgAddress><City>Nanjing</City><Postcode>210014</Postcode><Country Code="CN">China</Country></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En" OutputMedium="All"><Heading>Abstract</Heading><Para TextBreak="No">The use of plant disease resistance (<Emphasis Type="Italic">R</Emphasis>) genes in breeding programs needs an understanding of their variation patterns. In our current study, we investigated the polymorphisms of 44 NBS-LRR class <Emphasis Type="Italic">R</Emphasis>-genes among 21 rice cultivars and 14 wild rice populations. Our data suggested that there were four basic types of variations: conserved, diversified, intermediate-diversified, and present/absent patterns. Common characteristics at a locus of conserved <Emphasis Type="Italic">R</Emphasis>-genes were: copy-number uniformity, clear divergence (long branches) with other paralogs, and highly identical alleles. On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified <Emphasis Type="Italic">R</Emphasis>-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an <Emphasis Type="Italic">R</Emphasis>-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent <Emphasis Type="Italic">R</Emphasis>-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that <Emphasis Type="Italic">R</Emphasis>-genes were under strong selection, which shaped <Emphasis Type="Italic">R</Emphasis>-gene variation patterns.</Para></Abstract><ArticleNote Type="CommunicatedBy"><SimplePara>Communicated by D. A. Lightfoot.</SimplePara></ArticleNote><ArticleNote Type="Misc"><SimplePara>Sihai Yang and Tingting Gu contributed equally to this work.</SimplePara></ArticleNote><ArticleNote Type="ESMHint"><Heading>Electronic supplementary material</Heading><SimplePara>The online version of this article (doi:<ExternalRef><RefSource>10.1007/s00122-007-0656-4</RefSource><RefTarget Address="10.1007/s00122-007-0656-4" TargetType="DOI"></RefTarget></ExternalRef>) contains supplementary material, which is available to authorized users.</SimplePara></ArticleNote></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Genetic variation of NBS-LRR class resistance genes in rice lines</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Genetic variation of NBS-LRR class resistance genes in rice lines</title></titleInfo><name type="personal"><namePart type="given">Sihai</namePart><namePart type="family">Yang</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Tingting</namePart><namePart type="family">Gu</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Chunyu</namePart><namePart type="family">Pan</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Zhumei</namePart><namePart type="family">Feng</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jing</namePart><namePart type="family">Ding</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Yueyu</namePart><namePart type="family">Hang</namePart><affiliation>Jiangsu Province & Chinese Academy of Science, Institute of Botany, 210014, Nanjing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal" displayLabel="corresp"><namePart type="given">Jian-Qun</namePart><namePart type="family">Chen</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><affiliation>E-mail: chenjq@nju.edu.cn</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal" displayLabel="corresp"><namePart type="given">Dacheng</namePart><namePart type="family">Tian</namePart><affiliation>State Key Laboratory of Pharmaceutical Biotechnology, Department of Biology, Nanjing University, 210093, Nanjing, China</affiliation><affiliation>E-mail: dtian@nju.edu.cn</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="OriginalPaper" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Springer-Verlag</publisher><place><placeTerm type="text">Berlin/Heidelberg</placeTerm></place><dateCreated encoding="w3cdtf">2007-02-06</dateCreated><dateIssued encoding="w3cdtf">2008-01-01</dateIssued><copyrightDate encoding="w3cdtf">2007</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract lang="en">Abstract: The use of plant disease resistance (R) genes in breeding programs needs an understanding of their variation patterns. In our current study, we investigated the polymorphisms of 44 NBS-LRR class R-genes among 21 rice cultivars and 14 wild rice populations. Our data suggested that there were four basic types of variations: conserved, diversified, intermediate-diversified, and present/absent patterns. Common characteristics at a locus of conserved R-genes were: copy-number uniformity, clear divergence (long branches) with other paralogs, and highly identical alleles. On the other hand, copy-number variability, a nearly equal and non-zero branch lengths, and high levels of nucleotide diversity were observed at the loci of highly diversified R-genes. Research suggests that the ratio of diverse alleles to the total number of genes at a locus is one of the best criteria to characterize the variation pattern of an R-gene. Our data suggested that a significant genetic reduction was detected only in four present/absent R-genes, compared with the variation observed in wild rice. In general, no difference was detected between wild rice and cultivars, japonica and indica rice, or between lines from different geographic regions. Our results also suggested that R-genes were under strong selection, which shaped R-gene variation patterns.</abstract><note>Original Paper</note><relatedItem type="host"><titleInfo><title>Theoretical and Applied Genetics</title><subTitle>International Journal of Plant Breeding Research</subTitle></titleInfo><titleInfo type="abbreviated"><title>Theor Appl Genet</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><originInfo><publisher>Springer</publisher><dateIssued encoding="w3cdtf">2008</dateIssued><copyrightDate encoding="w3cdtf">2008</copyrightDate></originInfo><subject><genre>Life Sciences</genre><topic>Biotechnology</topic><topic>Biochemistry, general</topic><topic>Plant Biochemistry</topic><topic>Agriculture</topic><topic>Plant Genetics & Genomics</topic><topic>Plant Breeding/Biotechnology</topic></subject><identifier type="ISSN">0040-5752</identifier><identifier type="eISSN">1432-2242</identifier><identifier type="JournalID">122</identifier><identifier type="IssueArticleCount">13</identifier><identifier type="VolumeIssueCount">8</identifier><part><date>2008</date><detail type="volume"><number>116</number><caption>vol.</caption></detail><detail type="issue"><number>2</number><caption>no.</caption></detail><extent unit="pages"><start>165</start><end>177</end></extent></part><recordInfo><recordOrigin>Springer-Verlag, 2008</recordOrigin></recordInfo></relatedItem><identifier type="istex">881FEB4CD463C8E360EE5A6CB9F539A93DEE8AEF</identifier><identifier type="ark">ark:/67375/VQC-1CVRVPNJ-9</identifier><identifier type="DOI">10.1007/s00122-007-0656-4</identifier><identifier type="ArticleID">656</identifier><identifier type="ArticleID">s00122-007-0656-4</identifier><accessCondition type="use and reproduction" contentType="copyright">Springer-Verlag, 2007</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-3XSW68JL-F">springer</recordContentSource><recordOrigin>Converted from (version 1.2.14) to MODS version 3.6.</recordOrigin><recordCreationDate encoding="w3cdtf">2020-05-29</recordCreationDate></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/ark:/67375/VQC-1CVRVPNJ-9/record.json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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