OsCOL4 is a constitutive flowering repressor upstream of Ehd1 and downstream of OsphyB
Plants recognize environmental factors to determine flowering time. CONSTANS (CO) plays a central role in the photoperiod flowering pathway of Arabidopsis, and CO protein stability is modulated by photoreceptors. In rice, Hd1, an ortholog of CO, acts as a flowering promoter, and phytochromes repress...
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creator | Lee, Yang-Seok Jeong, Dong-Hoon Lee, Dong-Yeon Yi, Jakyung Ryu, Choong-Hwan Kim, Song L Jeong, Hee J Choi, Sang C Jin, Ping Yang, Jungil Cho, Lae-Hyeon Choi, Heebak An, Gynheung |
description | Plants recognize environmental factors to determine flowering time. CONSTANS (CO) plays a central role in the photoperiod flowering pathway of Arabidopsis, and CO protein stability is modulated by photoreceptors. In rice, Hd1, an ortholog of CO, acts as a flowering promoter, and phytochromes repress Hd1 expression. Here, we investigated the functioning of OsCOL4, a member of the CONSTANS-like (COL) family in rice. OsCOL4 null mutants flowered early under short or long days. In contrast, OsCOL4 activation-tagging mutants (OsCOL4-D) flowered late in either environment. Transcripts of Ehd1, Hd3a, and RFT1 were increased in the oscol4 mutants, but reduced in the OsCOL4-D mutants. This finding indicates that OsCOL4 is a constitutive repressor functioning upstream of Ehd1. By comparison, levels of Hd1, OsID1, OsMADS50, OsMADS51, and OsMADS56 transcripts were not significantly changed in oscol4 or OsCOL4-D, suggesting that OsCOL4 functions independently from previously reported flowering pathways. In osphyB mutants, OsCOL4 expression was decreased and osphyB oscol4 double mutants flowered at the same time as the osphyB single mutants, indicating OsCOL4 functions downstream of OsphyB. We also present evidence for two independent pathways through which OsPhyB controls flowering time. These pathways are: (i) night break-sensitive, which does not need OsCOL4; and (ii) night break-insensitive, in which OsCOL4 functions between OsphyB and Ehd1. |
doi_str_mv | 10.1111/j.1365-313X.2010.04226.x |
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CONSTANS (CO) plays a central role in the photoperiod flowering pathway of Arabidopsis, and CO protein stability is modulated by photoreceptors. In rice, Hd1, an ortholog of CO, acts as a flowering promoter, and phytochromes repress Hd1 expression. Here, we investigated the functioning of OsCOL4, a member of the CONSTANS-like (COL) family in rice. OsCOL4 null mutants flowered early under short or long days. In contrast, OsCOL4 activation-tagging mutants (OsCOL4-D) flowered late in either environment. Transcripts of Ehd1, Hd3a, and RFT1 were increased in the oscol4 mutants, but reduced in the OsCOL4-D mutants. This finding indicates that OsCOL4 is a constitutive repressor functioning upstream of Ehd1. By comparison, levels of Hd1, OsID1, OsMADS50, OsMADS51, and OsMADS56 transcripts were not significantly changed in oscol4 or OsCOL4-D, suggesting that OsCOL4 functions independently from previously reported flowering pathways. In osphyB mutants, OsCOL4 expression was decreased and osphyB oscol4 double mutants flowered at the same time as the osphyB single mutants, indicating OsCOL4 functions downstream of OsphyB. We also present evidence for two independent pathways through which OsPhyB controls flowering time. These pathways are: (i) night break-sensitive, which does not need OsCOL4; and (ii) night break-insensitive, in which OsCOL4 functions between OsphyB and Ehd1.</description><identifier>ISSN: 0960-7412</identifier><identifier>EISSN: 1365-313X</identifier><identifier>DOI: 10.1111/j.1365-313X.2010.04226.x</identifier><identifier>PMID: 20409004</identifier><language>eng</language><publisher>Oxford, UK: Oxford, UK : Blackwell Publishing Ltd</publisher><subject>Biological and medical sciences ; Biology and morphogenesis of the reproductive apparatus. Photoperiodism, vernalisation ; constants (CO) ; DNA, Bacterial - genetics ; early heading date 1 (Ehd1) ; flowering time ; Flowers & plants ; Flowers - growth & development ; Fundamental and applied biological sciences. Psychology ; Gene Expression Regulation, Plant ; Membranes ; Mutagenesis, Insertional ; Mutation ; Neurons ; night break ; Oryza - genetics ; Oryza - metabolism ; Photoperiod ; phytochrome ; Plant physiology and development ; Plant Proteins - genetics ; Plant Proteins - metabolism ; Proteins ; Repressor Proteins - genetics ; Repressor Proteins - metabolism ; Rice ; RNA, Plant - genetics ; Vegetative and sexual reproduction, floral biology, fructification</subject><ispartof>The Plant journal : for cell and molecular biology, 2010-07, Vol.63 (1), p.18-30</ispartof><rights>2010 The Authors. Journal compilation © 2010 Blackwell Publishing Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Journal compilation © 2010 Blackwell Publishing Ltd and the Society for Experimental Biology</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c5716-66e03af3557290280487a8f54fabdb6056bedc215a2c2a4834ae761ee3ce9ba23</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1365-313X.2010.04226.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1365-313X.2010.04226.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,27901,27902,45550,45551,46384,46808</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22943895$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20409004$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Yang-Seok</creatorcontrib><creatorcontrib>Jeong, Dong-Hoon</creatorcontrib><creatorcontrib>Lee, Dong-Yeon</creatorcontrib><creatorcontrib>Yi, Jakyung</creatorcontrib><creatorcontrib>Ryu, Choong-Hwan</creatorcontrib><creatorcontrib>Kim, Song L</creatorcontrib><creatorcontrib>Jeong, Hee J</creatorcontrib><creatorcontrib>Choi, Sang C</creatorcontrib><creatorcontrib>Jin, Ping</creatorcontrib><creatorcontrib>Yang, Jungil</creatorcontrib><creatorcontrib>Cho, Lae-Hyeon</creatorcontrib><creatorcontrib>Choi, Heebak</creatorcontrib><creatorcontrib>An, Gynheung</creatorcontrib><title>OsCOL4 is a constitutive flowering repressor upstream of Ehd1 and downstream of OsphyB</title><title>The Plant journal : for cell and molecular biology</title><addtitle>Plant J</addtitle><description>Plants recognize environmental factors to determine flowering time. CONSTANS (CO) plays a central role in the photoperiod flowering pathway of Arabidopsis, and CO protein stability is modulated by photoreceptors. In rice, Hd1, an ortholog of CO, acts as a flowering promoter, and phytochromes repress Hd1 expression. Here, we investigated the functioning of OsCOL4, a member of the CONSTANS-like (COL) family in rice. OsCOL4 null mutants flowered early under short or long days. In contrast, OsCOL4 activation-tagging mutants (OsCOL4-D) flowered late in either environment. Transcripts of Ehd1, Hd3a, and RFT1 were increased in the oscol4 mutants, but reduced in the OsCOL4-D mutants. This finding indicates that OsCOL4 is a constitutive repressor functioning upstream of Ehd1. By comparison, levels of Hd1, OsID1, OsMADS50, OsMADS51, and OsMADS56 transcripts were not significantly changed in oscol4 or OsCOL4-D, suggesting that OsCOL4 functions independently from previously reported flowering pathways. In osphyB mutants, OsCOL4 expression was decreased and osphyB oscol4 double mutants flowered at the same time as the osphyB single mutants, indicating OsCOL4 functions downstream of OsphyB. We also present evidence for two independent pathways through which OsPhyB controls flowering time. These pathways are: (i) night break-sensitive, which does not need OsCOL4; and (ii) night break-insensitive, in which OsCOL4 functions between OsphyB and Ehd1.</description><subject>Biological and medical sciences</subject><subject>Biology and morphogenesis of the reproductive apparatus. Photoperiodism, vernalisation</subject><subject>constants (CO)</subject><subject>DNA, Bacterial - genetics</subject><subject>early heading date 1 (Ehd1)</subject><subject>flowering time</subject><subject>Flowers & plants</subject><subject>Flowers - growth & development</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gene Expression Regulation, Plant</subject><subject>Membranes</subject><subject>Mutagenesis, Insertional</subject><subject>Mutation</subject><subject>Neurons</subject><subject>night break</subject><subject>Oryza - genetics</subject><subject>Oryza - metabolism</subject><subject>Photoperiod</subject><subject>phytochrome</subject><subject>Plant physiology and development</subject><subject>Plant Proteins - genetics</subject><subject>Plant Proteins - metabolism</subject><subject>Proteins</subject><subject>Repressor Proteins - genetics</subject><subject>Repressor Proteins - metabolism</subject><subject>Rice</subject><subject>RNA, Plant - genetics</subject><subject>Vegetative and sexual reproduction, floral biology, fructification</subject><issn>0960-7412</issn><issn>1365-313X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkUuP0zAQgC0EYsvCXwALCXFKGb-dAweolpcqFYldxM2aJM5uqjTJ2gnd_nscWnYl5uLRzDe2NR8hlMGSpXi3XTKhVSaY-LXkkKogOdfLu0dkcd94TBaQa8iMZPyMPItxC8CM0PIpOeMgIQeQC_JzE1ebtaRNpEjLvotjM05j89vTuu33PjTdNQ1-CD7GPtBpiGPwuKN9TS9uKkaxq2jV77uH8iYON4ePz8mTGtvoX5zOc3L16eJy9SVbbz5_XX1YZ6UyTGdaexBYC6UMz4FbkNagrZWssagKDUoXvio5U8hLjtIKid5o5r0ofV4gF-fk7fHeIfS3k4-j2zWx9G2Lne-n6IwQeZ4WpBP5-j9y20-hS59zyhhhFAiboJcnaCp2vnJDaHYYDu7fvhLw5gRgLLGtA3ZlEx84nkthc5W490du37T-cN9n4GZ_butmTW7W5GZ_7q8_d-cuv3-bszT_6jhfY-_wOqQ3rn4kUgCzmglrxR-vlZWH</recordid><startdate>201007</startdate><enddate>201007</enddate><creator>Lee, Yang-Seok</creator><creator>Jeong, Dong-Hoon</creator><creator>Lee, Dong-Yeon</creator><creator>Yi, Jakyung</creator><creator>Ryu, Choong-Hwan</creator><creator>Kim, Song L</creator><creator>Jeong, Hee J</creator><creator>Choi, Sang C</creator><creator>Jin, Ping</creator><creator>Yang, Jungil</creator><creator>Cho, Lae-Hyeon</creator><creator>Choi, Heebak</creator><creator>An, Gynheung</creator><general>Oxford, UK : Blackwell Publishing Ltd</general><general>Blackwell Publishing Ltd</general><general>Blackwell</general><scope>FBQ</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7QO</scope><scope>7QP</scope><scope>7QR</scope><scope>7TM</scope><scope>8FD</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>201007</creationdate><title>OsCOL4 is a constitutive flowering repressor upstream of Ehd1 and downstream of OsphyB</title><author>Lee, Yang-Seok ; Jeong, Dong-Hoon ; Lee, Dong-Yeon ; Yi, Jakyung ; Ryu, Choong-Hwan ; Kim, Song L ; Jeong, Hee J ; Choi, Sang C ; Jin, Ping ; Yang, Jungil ; Cho, Lae-Hyeon ; Choi, Heebak ; An, Gynheung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5716-66e03af3557290280487a8f54fabdb6056bedc215a2c2a4834ae761ee3ce9ba23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Biological and medical sciences</topic><topic>Biology and morphogenesis of the reproductive apparatus. Photoperiodism, vernalisation</topic><topic>constants (CO)</topic><topic>DNA, Bacterial - genetics</topic><topic>early heading date 1 (Ehd1)</topic><topic>flowering time</topic><topic>Flowers & plants</topic><topic>Flowers - growth & development</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gene Expression Regulation, Plant</topic><topic>Membranes</topic><topic>Mutagenesis, Insertional</topic><topic>Mutation</topic><topic>Neurons</topic><topic>night break</topic><topic>Oryza - genetics</topic><topic>Oryza - metabolism</topic><topic>Photoperiod</topic><topic>phytochrome</topic><topic>Plant physiology and development</topic><topic>Plant Proteins - genetics</topic><topic>Plant Proteins - metabolism</topic><topic>Proteins</topic><topic>Repressor Proteins - genetics</topic><topic>Repressor Proteins - metabolism</topic><topic>Rice</topic><topic>RNA, Plant - genetics</topic><topic>Vegetative and sexual reproduction, floral biology, fructification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Yang-Seok</creatorcontrib><creatorcontrib>Jeong, Dong-Hoon</creatorcontrib><creatorcontrib>Lee, Dong-Yeon</creatorcontrib><creatorcontrib>Yi, Jakyung</creatorcontrib><creatorcontrib>Ryu, Choong-Hwan</creatorcontrib><creatorcontrib>Kim, Song L</creatorcontrib><creatorcontrib>Jeong, Hee J</creatorcontrib><creatorcontrib>Choi, Sang C</creatorcontrib><creatorcontrib>Jin, Ping</creatorcontrib><creatorcontrib>Yang, Jungil</creatorcontrib><creatorcontrib>Cho, Lae-Hyeon</creatorcontrib><creatorcontrib>Choi, Heebak</creatorcontrib><creatorcontrib>An, Gynheung</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>Biotechnology Research Abstracts</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Chemoreception Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>The Plant journal : for cell and molecular biology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lee, Yang-Seok</au><au>Jeong, Dong-Hoon</au><au>Lee, Dong-Yeon</au><au>Yi, Jakyung</au><au>Ryu, Choong-Hwan</au><au>Kim, Song L</au><au>Jeong, Hee J</au><au>Choi, Sang C</au><au>Jin, Ping</au><au>Yang, Jungil</au><au>Cho, Lae-Hyeon</au><au>Choi, Heebak</au><au>An, Gynheung</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>OsCOL4 is a constitutive flowering repressor upstream of Ehd1 and downstream of OsphyB</atitle><jtitle>The Plant journal : for cell and molecular biology</jtitle><addtitle>Plant J</addtitle><date>2010-07</date><risdate>2010</risdate><volume>63</volume><issue>1</issue><spage>18</spage><epage>30</epage><pages>18-30</pages><issn>0960-7412</issn><eissn>1365-313X</eissn><abstract>Plants recognize environmental factors to determine flowering time. CONSTANS (CO) plays a central role in the photoperiod flowering pathway of Arabidopsis, and CO protein stability is modulated by photoreceptors. In rice, Hd1, an ortholog of CO, acts as a flowering promoter, and phytochromes repress Hd1 expression. Here, we investigated the functioning of OsCOL4, a member of the CONSTANS-like (COL) family in rice. OsCOL4 null mutants flowered early under short or long days. In contrast, OsCOL4 activation-tagging mutants (OsCOL4-D) flowered late in either environment. Transcripts of Ehd1, Hd3a, and RFT1 were increased in the oscol4 mutants, but reduced in the OsCOL4-D mutants. This finding indicates that OsCOL4 is a constitutive repressor functioning upstream of Ehd1. By comparison, levels of Hd1, OsID1, OsMADS50, OsMADS51, and OsMADS56 transcripts were not significantly changed in oscol4 or OsCOL4-D, suggesting that OsCOL4 functions independently from previously reported flowering pathways. In osphyB mutants, OsCOL4 expression was decreased and osphyB oscol4 double mutants flowered at the same time as the osphyB single mutants, indicating OsCOL4 functions downstream of OsphyB. We also present evidence for two independent pathways through which OsPhyB controls flowering time. These pathways are: (i) night break-sensitive, which does not need OsCOL4; and (ii) night break-insensitive, in which OsCOL4 functions between OsphyB and Ehd1.</abstract><cop>Oxford, UK</cop><pub>Oxford, UK : Blackwell Publishing Ltd</pub><pmid>20409004</pmid><doi>10.1111/j.1365-313X.2010.04226.x</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Biological and medical sciences Biology and morphogenesis of the reproductive apparatus. Photoperiodism, vernalisation constants (CO) DNA, Bacterial - genetics early heading date 1 (Ehd1) flowering time Flowers & plants Flowers - growth & development Fundamental and applied biological sciences. Psychology Gene Expression Regulation, Plant Membranes Mutagenesis, Insertional Mutation Neurons night break Oryza - genetics Oryza - metabolism Photoperiod phytochrome Plant physiology and development Plant Proteins - genetics Plant Proteins - metabolism Proteins Repressor Proteins - genetics Repressor Proteins - metabolism Rice RNA, Plant - genetics Vegetative and sexual reproduction, floral biology, fructification |
title | OsCOL4 is a constitutive flowering repressor upstream of Ehd1 and downstream of OsphyB |
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