PoplarV1, Main, Exploration, bibRecord, 001D54

Functional repression of PtSND2 represses growth and development by disturbing auxin biosynthesis, transport and signaling in transgenic poplar.

Identifieur interne : 001D54 ( Main/Exploration ); précédent : 001D53; suivant : 001D55

Functional repression of PtSND2 represses growth and development by disturbing auxin biosynthesis, transport and signaling in transgenic poplar.

Auteurs : Haihai Wang [République populaire de Chine] ; Renjie Tang [États-Unis] ; Cuiting Wang [République populaire de Chine] ; Qi Qi [République populaire de Chine] ; Ying Gai ; Xiangning Jiang [République populaire de Chine] ; Hongxia Zhang [République populaire de Chine]

Source :

Tree physiology [ 1758-4469 ] ; 2015.

RBID : pubmed:25516528

Descripteurs français

English descriptors

KwdEn :
- Biological Transport (genetics), Gene Expression Regulation, Plant (MeSH), Indoleacetic Acids (metabolism), Plant Leaves (genetics), Plant Leaves (growth & development), Plant Proteins (genetics), Plant Roots (genetics), Plant Roots (growth & development), Plant Stems (genetics), Plant Stems (growth & development), Plants, Genetically Modified (genetics), Plants, Genetically Modified (growth & development), Populus (genetics), Populus (growth & development), Signal Transduction (genetics), Transcription Factors (genetics).
MESH :
- chemical , genetics : Plant Proteins, Transcription Factors.
- chemical , metabolism : Indoleacetic Acids.
- genetics : Biological Transport, Plant Leaves, Plant Roots, Plant Stems, Plants, Genetically Modified, Populus, Signal Transduction.
- growth & development : Plant Leaves, Plant Roots, Plant Stems, Plants, Genetically Modified, Populus.
- Gene Expression Regulation, Plant.

Abstract

Using chimeric repressor silencing technology, we previously reported that functional repression of PtSND2 severely arrested wood formation in transgenic poplar (Populus). Here, we provide further evidence that auxin biosynthesis, transport and signaling were disturbed in these transgenic plants, leading to pleiotropic defects in their growth patterns, including inhibited leaf enlargement and vascular tissue development in the leaf central vein, suppressed cambial growth and fiber elongation in the stem, and arrested growth in the root system. Two transgenic lines, which displayed the most remarkable phenotypic deviation from the wild-type, were selected for detailed studies. In both transgenic lines, expression of genes for auxin biosynthesis, transport and signaling was down-regulated, and indole-3-acetic acid distribution was severely disturbed in the apical buds, leaves, stems and roots of field-grown transgenic plants. Transient transcription dual-luciferase assays of ProPtTYDC2::LUC, ProPttLAX2::LUC and ProPoptrIAA20.2::LUC in poplar protoplasts revealed that expression of auxin-related genes might be regulated by PtSND2 at the transcriptional level. All these results indicate that functional repression of PtSND2 altered auxin biosynthesis, transport and signaling, and thereby disturbed the normal growth and development of transgenic plants.

DOI: 10.1093/treephys/tpu100
PubMed: 25516528

Affiliations:

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Le document en format XML

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<term>Gene Expression Regulation, Plant (MeSH)</term>
<term>Indoleacetic Acids (metabolism)</term>
<term>Plant Leaves (genetics)</term>
<term>Plant Leaves (growth & development)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Roots (genetics)</term>
<term>Plant Roots (growth & development)</term>
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<term>Facteurs de transcription (génétique)</term>
<term>Feuilles de plante (croissance et développement)</term>
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<term>Régulation de l'expression des gènes végétaux (MeSH)</term>
<term>Tiges de plante (croissance et développement)</term>
<term>Tiges de plante (génétique)</term>
<term>Transduction du signal (génétique)</term>
<term>Transport biologique (génétique)</term>
<term>Végétaux génétiquement modifiés (croissance et développement)</term>
<term>Végétaux génétiquement modifiés (génétique)</term>
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<term>Transcription Factors</term>
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<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Indoleacetic Acids</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Feuilles de plante</term>
<term>Populus</term>
<term>Racines de plante</term>
<term>Tiges de plante</term>
<term>Végétaux génétiquement modifiés</term>
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<term>Plant Leaves</term>
<term>Plant Roots</term>
<term>Plant Stems</term>
<term>Plants, Genetically Modified</term>
<term>Populus</term>
<term>Signal Transduction</term>
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<term>Plant Roots</term>
<term>Plant Stems</term>
<term>Plants, Genetically Modified</term>
<term>Populus</term>
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<keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Facteurs de transcription</term>
<term>Feuilles de plante</term>
<term>Populus</term>
<term>Protéines végétales</term>
<term>Racines de plante</term>
<term>Tiges de plante</term>
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<front><div type="abstract" xml:lang="en">Using chimeric repressor silencing technology, we previously reported that functional repression of PtSND2 severely arrested wood formation in transgenic poplar (Populus). Here, we provide further evidence that auxin biosynthesis, transport and signaling were disturbed in these transgenic plants, leading to pleiotropic defects in their growth patterns, including inhibited leaf enlargement and vascular tissue development in the leaf central vein, suppressed cambial growth and fiber elongation in the stem, and arrested growth in the root system. Two transgenic lines, which displayed the most remarkable phenotypic deviation from the wild-type, were selected for detailed studies. In both transgenic lines, expression of genes for auxin biosynthesis, transport and signaling was down-regulated, and indole-3-acetic acid distribution was severely disturbed in the apical buds, leaves, stems and roots of field-grown transgenic plants. Transient transcription dual-luciferase assays of ProPtTYDC2::LUC, ProPttLAX2::LUC and ProPoptrIAA20.2::LUC in poplar protoplasts revealed that expression of auxin-related genes might be regulated by PtSND2 at the transcriptional level. All these results indicate that functional repression of PtSND2 altered auxin biosynthesis, transport and signaling, and thereby disturbed the normal growth and development of transgenic plants. </div>
</front>
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<Abstract><AbstractText>Using chimeric repressor silencing technology, we previously reported that functional repression of PtSND2 severely arrested wood formation in transgenic poplar (Populus). Here, we provide further evidence that auxin biosynthesis, transport and signaling were disturbed in these transgenic plants, leading to pleiotropic defects in their growth patterns, including inhibited leaf enlargement and vascular tissue development in the leaf central vein, suppressed cambial growth and fiber elongation in the stem, and arrested growth in the root system. Two transgenic lines, which displayed the most remarkable phenotypic deviation from the wild-type, were selected for detailed studies. In both transgenic lines, expression of genes for auxin biosynthesis, transport and signaling was down-regulated, and indole-3-acetic acid distribution was severely disturbed in the apical buds, leaves, stems and roots of field-grown transgenic plants. Transient transcription dual-luciferase assays of ProPtTYDC2::LUC, ProPttLAX2::LUC and ProPoptrIAA20.2::LUC in poplar protoplasts revealed that expression of auxin-related genes might be regulated by PtSND2 at the transcriptional level. All these results indicate that functional repression of PtSND2 altered auxin biosynthesis, transport and signaling, and thereby disturbed the normal growth and development of transgenic plants. </AbstractText>
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</AffiliationInfo>
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<ForeName>Hongxia</ForeName>
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<AffiliationInfo><Affiliation>National Key Laboratory of Plant Molecular Genetics, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, China hxzhang@sippe.ac.cn gaiying@bjfu.edu.cn.</Affiliation>
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<MeshHeading><DescriptorName UI="D030821" MajorTopicYN="N">Plants, Genetically Modified</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
<QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
<QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D015398" MajorTopicYN="N">Signal Transduction</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName>
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<MeshHeading><DescriptorName UI="D014157" MajorTopicYN="N">Transcription Factors</DescriptorName>
<QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName>
</MeshHeading>
</MeshHeadingList>
<KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">PtSND2</Keyword>
<Keyword MajorTopicYN="N">chimeric repressor</Keyword>
<Keyword MajorTopicYN="N">indole-3-acetic acid</Keyword>
<Keyword MajorTopicYN="N">transgenic plant</Keyword>
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<PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2014</Year>
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<PubMedPubDate PubStatus="pubmed"><Year>2014</Year>
<Month>12</Month>
<Day>18</Day>
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<Minute>0</Minute>
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<PubMedPubDate PubStatus="medline"><Year>2015</Year>
<Month>9</Month>
<Day>19</Day>
<Hour>6</Hour>
<Minute>0</Minute>
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</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList><ArticleId IdType="pubmed">25516528</ArticleId>
<ArticleId IdType="pii">tpu100</ArticleId>
<ArticleId IdType="doi">10.1093/treephys/tpu100</ArticleId>
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<affiliations><list><country><li>République populaire de Chine</li>
<li>États-Unis</li>
</country>
<region><li>Californie</li>
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<settlement><li>Pékin</li>
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<tree><noCountry><name sortKey="Gai, Ying" sort="Gai, Ying" uniqKey="Gai Y" first="Ying" last="Gai">Ying Gai</name>
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<country name="République populaire de Chine"><noRegion><name sortKey="Wang, Haihai" sort="Wang, Haihai" uniqKey="Wang H" first="Haihai" last="Wang">Haihai Wang</name>
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<name sortKey="Jiang, Xiangning" sort="Jiang, Xiangning" uniqKey="Jiang X" first="Xiangning" last="Jiang">Xiangning Jiang</name>
<name sortKey="Qi, Qi" sort="Qi, Qi" uniqKey="Qi Q" first="Qi" last="Qi">Qi Qi</name>
<name sortKey="Wang, Cuiting" sort="Wang, Cuiting" uniqKey="Wang C" first="Cuiting" last="Wang">Cuiting Wang</name>
<name sortKey="Zhang, Hongxia" sort="Zhang, Hongxia" uniqKey="Zhang H" first="Hongxia" last="Zhang">Hongxia Zhang</name>
</country>
<country name="États-Unis"><region name="Californie"><name sortKey="Tang, Renjie" sort="Tang, Renjie" uniqKey="Tang R" first="Renjie" last="Tang">Renjie Tang</name>
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Functional repression of PtSND2 represses growth and development by disturbing auxin biosynthesis, transport and signaling in transgenic poplar.

Functional repression of PtSND2 represses growth and development by disturbing auxin biosynthesis, transport and signaling in transgenic poplar.

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