Integration of Auxin and Salt Signals by the NAC Transcription Factor NTM2 during Seed Germination in Arabidopsis
Seed germination is regulated through elaborately interacting signaling networks that integrate diverse environmental cues into hormonal signaling pathways. Roles of gibberellic acid and abscisic acid in germination have been studied extensively using Arabidopsis (Arabidopsis thaliana) mutants havin...
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| Veröffentlicht in: | Plant physiology (Bethesda) 2011-06, Vol.156 (2), p.537-549 |
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| creator | Park, Jungmin Kim, Youn-Sung Kim, Sang-Gyu Jung, Jae-Hoon Woo, Je-Chang Park, Chung-Mo |
| description | Seed germination is regulated through elaborately interacting signaling networks that integrate diverse environmental cues into hormonal signaling pathways. Roles of gibberellic acid and abscisic acid in germination have been studied extensively using Arabidopsis (Arabidopsis thaliana) mutants having alterations in seed germination. Auxin has also been implicated in seed germination. However, how auxin influences germination is largely unknown. Here, we demonstrate that auxin is linked via the IAA30 gene with a salt signaling cascade mediated by the NAM-ATAF1/2-CUC2 transcription factor NTM2/Arabidopsis NAC domain-containing protein 69 (for NAC with Transmembrane Motif 1) during seed germination. Germination of the NTM2-deficient nim2-1 mutant seeds exhibited enhanced resistance to high salinity. However, the salt resistance disappeared in the ntm2-1 mutant overexpressing the IAA30 gene, which was induced by salt in a NTM2-dependent manner. Auxin exhibited no discernible effects on germination under normal growth conditions. Under high salinity, however, whereas exogenous application of auxin further suppressed the germination of control seeds, the auxin effects were reduced in the ntm2-1 mutant. Consistent with the inhibitory effects of auxin on germination, germination of YUCCA 3-overexpressing plants containing elevated levels of active auxin was more severely influenced by salt. These observations indicate that auxin delays seed germination under high salinity through cross talk with the NTM2-mediated salt signaling in Arabidopsis. |
| doi_str_mv | 10.1104/pp.111.177071 |
| format | Article |
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Roles of gibberellic acid and abscisic acid in germination have been studied extensively using Arabidopsis (Arabidopsis thaliana) mutants having alterations in seed germination. Auxin has also been implicated in seed germination. However, how auxin influences germination is largely unknown. Here, we demonstrate that auxin is linked via the IAA30 gene with a salt signaling cascade mediated by the NAM-ATAF1/2-CUC2 transcription factor NTM2/Arabidopsis NAC domain-containing protein 69 (for NAC with Transmembrane Motif 1) during seed germination. Germination of the NTM2-deficient nim2-1 mutant seeds exhibited enhanced resistance to high salinity. However, the salt resistance disappeared in the ntm2-1 mutant overexpressing the IAA30 gene, which was induced by salt in a NTM2-dependent manner. Auxin exhibited no discernible effects on germination under normal growth conditions. Under high salinity, however, whereas exogenous application of auxin further suppressed the germination of control seeds, the auxin effects were reduced in the ntm2-1 mutant. Consistent with the inhibitory effects of auxin on germination, germination of YUCCA 3-overexpressing plants containing elevated levels of active auxin was more severely influenced by salt. These observations indicate that auxin delays seed germination under high salinity through cross talk with the NTM2-mediated salt signaling in Arabidopsis.</description><identifier>ISSN: 0032-0889</identifier><identifier>ISSN: 1532-2548</identifier><identifier>EISSN: 1532-2548</identifier><identifier>DOI: 10.1104/pp.111.177071</identifier><identifier>PMID: 21450938</identifier><identifier>CODEN: PPHYA5</identifier><language>eng</language><publisher>Rockville, MD: American Society of Plant Biologists</publisher><subject>Abscisic acid ; Arabidopsis - drug effects ; Arabidopsis - genetics ; Arabidopsis - growth & development ; Arabidopsis Proteins - genetics ; Arabidopsis Proteins - metabolism ; Arabidopsis thaliana ; Auxins ; Biological and medical sciences ; Cell Membrane - drug effects ; Cell Membrane - metabolism ; DEVELOPMENT AND HORMONE ACTION ; Fundamental and applied biological sciences. Psychology ; Gene Expression Regulation, Plant - drug effects ; Genes ; Genes, Plant - genetics ; Germination ; Germination - drug effects ; Germination - genetics ; Indoleacetic Acids - metabolism ; Indoleacetic Acids - pharmacology ; Mutation - genetics ; Plant physiology and development ; Plants ; Promoter Regions, Genetic - genetics ; Protein Binding - drug effects ; Proteins ; Salinity ; Salts ; Seed germination ; Seeds - drug effects ; Seeds - genetics ; Seeds - growth & development ; Signal Transduction - drug effects ; Signal Transduction - genetics ; Sodium Chloride - metabolism ; Sodium Chloride - pharmacology ; Transcription factors ; Transcription Factors - genetics ; Transcription Factors - metabolism ; Transgenic plants</subject><ispartof>Plant physiology (Bethesda), 2011-06, Vol.156 (2), p.537-549</ispartof><rights>2011 American Society of Plant Biologists</rights><rights>2015 INIST-CNRS</rights><rights>2011 American Society of Plant Biologists 2011</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c537t-4ad57ebc503e3bee1227ff99909e3f384cda31326c511040a6ddae8ca09413d13</citedby><cites>FETCH-LOGICAL-c537t-4ad57ebc503e3bee1227ff99909e3f384cda31326c511040a6ddae8ca09413d13</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/41434324$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/41434324$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>230,314,780,784,803,885,27923,27924,58016,58249</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24257599$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21450938$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Park, Jungmin</creatorcontrib><creatorcontrib>Kim, Youn-Sung</creatorcontrib><creatorcontrib>Kim, Sang-Gyu</creatorcontrib><creatorcontrib>Jung, Jae-Hoon</creatorcontrib><creatorcontrib>Woo, Je-Chang</creatorcontrib><creatorcontrib>Park, Chung-Mo</creatorcontrib><title>Integration of Auxin and Salt Signals by the NAC Transcription Factor NTM2 during Seed Germination in Arabidopsis</title><title>Plant physiology (Bethesda)</title><addtitle>Plant Physiol</addtitle><description>Seed germination is regulated through elaborately interacting signaling networks that integrate diverse environmental cues into hormonal signaling pathways. Roles of gibberellic acid and abscisic acid in germination have been studied extensively using Arabidopsis (Arabidopsis thaliana) mutants having alterations in seed germination. Auxin has also been implicated in seed germination. However, how auxin influences germination is largely unknown. Here, we demonstrate that auxin is linked via the IAA30 gene with a salt signaling cascade mediated by the NAM-ATAF1/2-CUC2 transcription factor NTM2/Arabidopsis NAC domain-containing protein 69 (for NAC with Transmembrane Motif 1) during seed germination. Germination of the NTM2-deficient nim2-1 mutant seeds exhibited enhanced resistance to high salinity. However, the salt resistance disappeared in the ntm2-1 mutant overexpressing the IAA30 gene, which was induced by salt in a NTM2-dependent manner. Auxin exhibited no discernible effects on germination under normal growth conditions. Under high salinity, however, whereas exogenous application of auxin further suppressed the germination of control seeds, the auxin effects were reduced in the ntm2-1 mutant. Consistent with the inhibitory effects of auxin on germination, germination of YUCCA 3-overexpressing plants containing elevated levels of active auxin was more severely influenced by salt. These observations indicate that auxin delays seed germination under high salinity through cross talk with the NTM2-mediated salt signaling in Arabidopsis.</description><subject>Abscisic acid</subject><subject>Arabidopsis - drug effects</subject><subject>Arabidopsis - genetics</subject><subject>Arabidopsis - growth & development</subject><subject>Arabidopsis Proteins - genetics</subject><subject>Arabidopsis Proteins - metabolism</subject><subject>Arabidopsis thaliana</subject><subject>Auxins</subject><subject>Biological and medical sciences</subject><subject>Cell Membrane - drug effects</subject><subject>Cell Membrane - metabolism</subject><subject>DEVELOPMENT AND HORMONE ACTION</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Gene Expression Regulation, Plant - drug effects</subject><subject>Genes</subject><subject>Genes, Plant - genetics</subject><subject>Germination</subject><subject>Germination - drug effects</subject><subject>Germination - genetics</subject><subject>Indoleacetic Acids - metabolism</subject><subject>Indoleacetic Acids - pharmacology</subject><subject>Mutation - genetics</subject><subject>Plant physiology and development</subject><subject>Plants</subject><subject>Promoter Regions, Genetic - genetics</subject><subject>Protein Binding - drug effects</subject><subject>Proteins</subject><subject>Salinity</subject><subject>Salts</subject><subject>Seed germination</subject><subject>Seeds - drug effects</subject><subject>Seeds - genetics</subject><subject>Seeds - growth & development</subject><subject>Signal Transduction - drug effects</subject><subject>Signal Transduction - genetics</subject><subject>Sodium Chloride - metabolism</subject><subject>Sodium Chloride - pharmacology</subject><subject>Transcription factors</subject><subject>Transcription Factors - genetics</subject><subject>Transcription Factors - metabolism</subject><subject>Transgenic plants</subject><issn>0032-0889</issn><issn>1532-2548</issn><issn>1532-2548</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpVkc1v1DAQxS0EotvCkSPIF6ReUjz-2MQXpNWKlkqlHHY5W47tbF1l7dROKvrf45JlgdOzNL95Hr2H0DsgFwCEfxqGonABdU1qeIEWIBitqODNS7QgpLxJ08gTdJrzPSEEGPDX6IQCF0SyZoEersPodkmPPgYcO7yafvqAdbB4o_sRb_wu6D7j9gmPdw7frtZ4m3TIJvnh98qlNmNM-Hb7jWI7JR92eOOcxVcu7X2YbYvhKunW2zhkn9-gV12xdG8PeoZ-XH7Zrr9WN9-vrterm8oIVo8V11bUrjWCMMda54DSuuuklEQ61rGGG6sZMLo04jkHopfWatcYTSQHZoGdoc-z7zC1e2eNC2PSvRqS3-v0pKL26v9J8HdqFx8VK1lSUReD84NBig-Ty6Pa-2xc3-vg4pQV8GXDBAhJClrNqEkx5-S64zdA1PN5ahiKgpprKvyHf2870n96KcDHA6Cz0X1XMjc-_-V4OVBIWbj3M3efSw3HOQfOOKOc_QK_y6U6</recordid><startdate>20110601</startdate><enddate>20110601</enddate><creator>Park, Jungmin</creator><creator>Kim, Youn-Sung</creator><creator>Kim, Sang-Gyu</creator><creator>Jung, Jae-Hoon</creator><creator>Woo, Je-Chang</creator><creator>Park, Chung-Mo</creator><general>American Society of Plant Biologists</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TM</scope><scope>5PM</scope></search><sort><creationdate>20110601</creationdate><title>Integration of Auxin and Salt Signals by the NAC Transcription Factor NTM2 during Seed Germination in Arabidopsis</title><author>Park, Jungmin ; Kim, Youn-Sung ; Kim, Sang-Gyu ; Jung, Jae-Hoon ; Woo, Je-Chang ; Park, Chung-Mo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c537t-4ad57ebc503e3bee1227ff99909e3f384cda31326c511040a6ddae8ca09413d13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Abscisic acid</topic><topic>Arabidopsis - drug effects</topic><topic>Arabidopsis - genetics</topic><topic>Arabidopsis - growth & development</topic><topic>Arabidopsis Proteins - genetics</topic><topic>Arabidopsis Proteins - metabolism</topic><topic>Arabidopsis thaliana</topic><topic>Auxins</topic><topic>Biological and medical sciences</topic><topic>Cell Membrane - drug effects</topic><topic>Cell Membrane - metabolism</topic><topic>DEVELOPMENT AND HORMONE ACTION</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Gene Expression Regulation, Plant - drug effects</topic><topic>Genes</topic><topic>Genes, Plant - genetics</topic><topic>Germination</topic><topic>Germination - drug effects</topic><topic>Germination - genetics</topic><topic>Indoleacetic Acids - metabolism</topic><topic>Indoleacetic Acids - pharmacology</topic><topic>Mutation - genetics</topic><topic>Plant physiology and development</topic><topic>Plants</topic><topic>Promoter Regions, Genetic - genetics</topic><topic>Protein Binding - drug effects</topic><topic>Proteins</topic><topic>Salinity</topic><topic>Salts</topic><topic>Seed germination</topic><topic>Seeds - drug effects</topic><topic>Seeds - genetics</topic><topic>Seeds - growth & development</topic><topic>Signal Transduction - drug effects</topic><topic>Signal Transduction - genetics</topic><topic>Sodium Chloride - metabolism</topic><topic>Sodium Chloride - pharmacology</topic><topic>Transcription factors</topic><topic>Transcription Factors - genetics</topic><topic>Transcription Factors - metabolism</topic><topic>Transgenic plants</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Park, Jungmin</creatorcontrib><creatorcontrib>Kim, Youn-Sung</creatorcontrib><creatorcontrib>Kim, Sang-Gyu</creatorcontrib><creatorcontrib>Jung, Jae-Hoon</creatorcontrib><creatorcontrib>Woo, Je-Chang</creatorcontrib><creatorcontrib>Park, Chung-Mo</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Nucleic Acids Abstracts</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Plant physiology (Bethesda)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Park, Jungmin</au><au>Kim, Youn-Sung</au><au>Kim, Sang-Gyu</au><au>Jung, Jae-Hoon</au><au>Woo, Je-Chang</au><au>Park, Chung-Mo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Integration of Auxin and Salt Signals by the NAC Transcription Factor NTM2 during Seed Germination in Arabidopsis</atitle><jtitle>Plant physiology (Bethesda)</jtitle><addtitle>Plant Physiol</addtitle><date>2011-06-01</date><risdate>2011</risdate><volume>156</volume><issue>2</issue><spage>537</spage><epage>549</epage><pages>537-549</pages><issn>0032-0889</issn><issn>1532-2548</issn><eissn>1532-2548</eissn><coden>PPHYA5</coden><abstract>Seed germination is regulated through elaborately interacting signaling networks that integrate diverse environmental cues into hormonal signaling pathways. Roles of gibberellic acid and abscisic acid in germination have been studied extensively using Arabidopsis (Arabidopsis thaliana) mutants having alterations in seed germination. Auxin has also been implicated in seed germination. However, how auxin influences germination is largely unknown. Here, we demonstrate that auxin is linked via the IAA30 gene with a salt signaling cascade mediated by the NAM-ATAF1/2-CUC2 transcription factor NTM2/Arabidopsis NAC domain-containing protein 69 (for NAC with Transmembrane Motif 1) during seed germination. Germination of the NTM2-deficient nim2-1 mutant seeds exhibited enhanced resistance to high salinity. However, the salt resistance disappeared in the ntm2-1 mutant overexpressing the IAA30 gene, which was induced by salt in a NTM2-dependent manner. Auxin exhibited no discernible effects on germination under normal growth conditions. Under high salinity, however, whereas exogenous application of auxin further suppressed the germination of control seeds, the auxin effects were reduced in the ntm2-1 mutant. Consistent with the inhibitory effects of auxin on germination, germination of YUCCA 3-overexpressing plants containing elevated levels of active auxin was more severely influenced by salt. These observations indicate that auxin delays seed germination under high salinity through cross talk with the NTM2-mediated salt signaling in Arabidopsis.</abstract><cop>Rockville, MD</cop><pub>American Society of Plant Biologists</pub><pmid>21450938</pmid><doi>10.1104/pp.111.177071</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Abscisic acid Arabidopsis - drug effects Arabidopsis - genetics Arabidopsis - growth & development Arabidopsis Proteins - genetics Arabidopsis Proteins - metabolism Arabidopsis thaliana Auxins Biological and medical sciences Cell Membrane - drug effects Cell Membrane - metabolism DEVELOPMENT AND HORMONE ACTION Fundamental and applied biological sciences. Psychology Gene Expression Regulation, Plant - drug effects Genes Genes, Plant - genetics Germination Germination - drug effects Germination - genetics Indoleacetic Acids - metabolism Indoleacetic Acids - pharmacology Mutation - genetics Plant physiology and development Plants Promoter Regions, Genetic - genetics Protein Binding - drug effects Proteins Salinity Salts Seed germination Seeds - drug effects Seeds - genetics Seeds - growth & development Signal Transduction - drug effects Signal Transduction - genetics Sodium Chloride - metabolism Sodium Chloride - pharmacology Transcription factors Transcription Factors - genetics Transcription Factors - metabolism Transgenic plants |
| title | Integration of Auxin and Salt Signals by the NAC Transcription Factor NTM2 during Seed Germination in Arabidopsis |
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