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Histone deacetylase gene PtHDT902 modifies adventitious root formation and negatively regulates salt stress tolerance in poplar.

Identifieur interne : 000349 ( Main/Exploration ); précédent : 000348; suivant : 000350

Histone deacetylase gene PtHDT902 modifies adventitious root formation and negatively regulates salt stress tolerance in poplar.

Auteurs : Xujun Ma [République populaire de Chine] ; Xueying Liang [République populaire de Chine] ; Shibo Lv [République populaire de Chine] ; Tao Guan [République populaire de Chine] ; Tingbo Jiang [République populaire de Chine] ; Yuxiang Cheng [République populaire de Chine]

Source :

RBID : pubmed:31779889

Descripteurs français

English descriptors

Abstract

Histone deacetylases (HDACs) regulate gene transcription, and play a critical role in plant growth, development and stress responses. HD2 proteins are plant specific histone deacetylases. In woody plants, functions of HD2s are not known. In this study, we cloned an HD2 gene PtHDT902 from Populus trichocarpa and investigated its sequence, expression, subcellular localization, and functions in root development and salt stress responses. Our findings indicated that PtHDT902 was a nuclear protein and its expression was regulated by abiotic stresses. The over-expression of PtHDT902 in both Arabidopsis and poplar increased the expression levels of gibberellin (GA) biosynthetic genes. The expression of PtHDT902 in Arabidopsis enhanced primary root growth, and its over-expression in poplar inhibited adventitious root formation. These phenotypes resulted from over-expression of PtHDT902 were consistent with the GA-overproduction phenotypes. In addition, the poplar plants over-expressing PtHDT902 exhibited lower tolerance to salt than non-transgenic plants. These findings indicated that PtHDT902 worked as an important regulator in adventitious root formation and salt stress tolerance in poplar.

DOI: 10.1016/j.plantsci.2019.110301
PubMed: 31779889


Affiliations:


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Le document en format XML

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<term>Amino Acid Sequence (MeSH)</term>
<term>Gibberellins (metabolism)</term>
<term>Histone Deacetylases (chemistry)</term>
<term>Histone Deacetylases (genetics)</term>
<term>Histone Deacetylases (metabolism)</term>
<term>Phylogeny (MeSH)</term>
<term>Plant Proteins (chemistry)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Proteins (metabolism)</term>
<term>Plant Roots (genetics)</term>
<term>Plant Roots (growth & development)</term>
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<term>Alignement de séquences (MeSH)</term>
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<term>Histone deacetylases (composition chimique)</term>
<term>Histone deacetylases (génétique)</term>
<term>Histone deacetylases (métabolisme)</term>
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<term>Populus (croissance et développement)</term>
<term>Populus (génétique)</term>
<term>Populus (physiologie)</term>
<term>Protéines végétales (composition chimique)</term>
<term>Protéines végétales (génétique)</term>
<term>Protéines végétales (métabolisme)</term>
<term>Racines de plante (croissance et développement)</term>
<term>Racines de plante (génétique)</term>
<term>Séquence d'acides aminés (MeSH)</term>
<term>Tolérance au sel (génétique)</term>
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<term>Histone Deacetylases</term>
<term>Plant Proteins</term>
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<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
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<term>Plant Proteins</term>
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<term>Gibberellins</term>
<term>Histone Deacetylases</term>
<term>Plant Proteins</term>
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<keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr">
<term>Histone deacetylases</term>
<term>Protéines végétales</term>
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<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr">
<term>Populus</term>
<term>Racines de plante</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en">
<term>Plant Roots</term>
<term>Populus</term>
<term>Salt Tolerance</term>
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<term>Populus</term>
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<keywords scheme="MESH" qualifier="génétique" xml:lang="fr">
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<term>Populus</term>
<term>Protéines végétales</term>
<term>Racines de plante</term>
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<term>Histone deacetylases</term>
<term>Protéines végétales</term>
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<div type="abstract" xml:lang="en">Histone deacetylases (HDACs) regulate gene transcription, and play a critical role in plant growth, development and stress responses. HD2 proteins are plant specific histone deacetylases. In woody plants, functions of HD2s are not known. In this study, we cloned an HD2 gene PtHDT902 from Populus trichocarpa and investigated its sequence, expression, subcellular localization, and functions in root development and salt stress responses. Our findings indicated that PtHDT902 was a nuclear protein and its expression was regulated by abiotic stresses. The over-expression of PtHDT902 in both Arabidopsis and poplar increased the expression levels of gibberellin (GA) biosynthetic genes. The expression of PtHDT902 in Arabidopsis enhanced primary root growth, and its over-expression in poplar inhibited adventitious root formation. These phenotypes resulted from over-expression of PtHDT902 were consistent with the GA-overproduction phenotypes. In addition, the poplar plants over-expressing PtHDT902 exhibited lower tolerance to salt than non-transgenic plants. These findings indicated that PtHDT902 worked as an important regulator in adventitious root formation and salt stress tolerance in poplar.</div>
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<ArticleId IdType="doi">10.1016/j.plantsci.2019.110301</ArticleId>
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<li>République populaire de Chine</li>
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<name sortKey="Ma, Xujun" sort="Ma, Xujun" uniqKey="Ma X" first="Xujun" last="Ma">Xujun Ma</name>
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<name sortKey="Cheng, Yuxiang" sort="Cheng, Yuxiang" uniqKey="Cheng Y" first="Yuxiang" last="Cheng">Yuxiang Cheng</name>
<name sortKey="Guan, Tao" sort="Guan, Tao" uniqKey="Guan T" first="Tao" last="Guan">Tao Guan</name>
<name sortKey="Jiang, Tingbo" sort="Jiang, Tingbo" uniqKey="Jiang T" first="Tingbo" last="Jiang">Tingbo Jiang</name>
<name sortKey="Liang, Xueying" sort="Liang, Xueying" uniqKey="Liang X" first="Xueying" last="Liang">Xueying Liang</name>
<name sortKey="Lv, Shibo" sort="Lv, Shibo" uniqKey="Lv S" first="Shibo" last="Lv">Shibo Lv</name>
</country>
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