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The Populus trichocarpa PtHSP17.8 involved in heat and salt stress tolerances.

Identifieur interne : 001638 ( Main/Exploration ); précédent : 001637; suivant : 001639

The Populus trichocarpa PtHSP17.8 involved in heat and salt stress tolerances.

Auteurs : Jianbo Li [République populaire de Chine] ; Jin Zhang [République populaire de Chine] ; Huixia Jia [République populaire de Chine] ; Yu Li [République populaire de Chine] ; Xiangdong Xu [République populaire de Chine] ; Lijuan Wang [République populaire de Chine] ; Mengzhu Lu [République populaire de Chine]

Source :

RBID : pubmed:27021382

Descripteurs français

English descriptors

Abstract

KEY MESSAGE

PtHSP17.8 was regulated by various abiotic stresses. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses through maintain ROS homeostasis and cooperate with stress-related genes in Arabidopsis. Small heat shock proteins (sHSPs) play important roles in response to diverse biotic and abiotic stresses, especially in heat tolerance. However, limited information is available on the stress tolerance roles of sHSPs in woody species. To explore the function of sHSPs in poplar, we isolated and characterized PtHSP17.8 from Populus trichocarpa. Phylogenetic analysis and subcellular localization revealed that PtHSP17.8 was a cytosolic class I sHSP. The gene expression profile of PtHSP17.8 in various tissues showed that it was significantly accumulated in stem and root, which was consistent with the GUS expression pattern driven by promoter of PtHSP17.8. The expression of PtHSP17.8 could be induced by various abiotic stresses and significantly activated by heat stress. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses in Arabidopsis. The seedling survival rate, root length, relative water content, antioxidative enzyme activities, proline, and soluble sugar content were increased in transgenic Arabidopsis under heat and salt stresses, but not in normal condition. The co-expression network of PtHSP17.8 were constructed and demonstrated many stress responsive genes included. The stress-related genes in the co-expression network were up-regulated in the PtHSP17.8 overexpression seedlings. These results suggest that PtHSP17.8 confers heat and salt tolerances in plants.


DOI: 10.1007/s00299-016-1973-3
PubMed: 27021382


Affiliations:


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<term>Amino Acid Sequence (MeSH)</term>
<term>Arabidopsis (genetics)</term>
<term>Arabidopsis (physiology)</term>
<term>Gene Expression Regulation, Plant (MeSH)</term>
<term>Gene Regulatory Networks (MeSH)</term>
<term>Genes, Plant (MeSH)</term>
<term>Hot Temperature (MeSH)</term>
<term>Phylogeny (MeSH)</term>
<term>Plant Proteins (chemistry)</term>
<term>Plant Proteins (genetics)</term>
<term>Plant Proteins (isolation & purification)</term>
<term>Plant Proteins (metabolism)</term>
<term>Plants, Genetically Modified (MeSH)</term>
<term>Populus (genetics)</term>
<term>Populus (physiology)</term>
<term>Salt Tolerance (genetics)</term>
<term>Sequence Alignment (MeSH)</term>
<term>Stress, Physiological (genetics)</term>
<term>Subcellular Fractions (metabolism)</term>
<term>Thermotolerance (MeSH)</term>
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<term>Alignement de séquences (MeSH)</term>
<term>Arabidopsis (génétique)</term>
<term>Arabidopsis (physiologie)</term>
<term>Fractions subcellulaires (métabolisme)</term>
<term>Gènes de plante (MeSH)</term>
<term>Phylogenèse (MeSH)</term>
<term>Populus (génétique)</term>
<term>Populus (physiologie)</term>
<term>Protéines végétales (composition chimique)</term>
<term>Protéines végétales (génétique)</term>
<term>Protéines végétales (isolement et purification)</term>
<term>Protéines végétales (métabolisme)</term>
<term>Régulation de l'expression des gènes végétaux (MeSH)</term>
<term>Réseaux de régulation génique (MeSH)</term>
<term>Stress physiologique (génétique)</term>
<term>Séquence d'acides aminés (MeSH)</term>
<term>Température élevée (MeSH)</term>
<term>Thermotolérance (MeSH)</term>
<term>Tolérance au sel (génétique)</term>
<term>Végétaux génétiquement modifiés (MeSH)</term>
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<term>Plant Proteins</term>
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<term>Protéines végétales</term>
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<term>Arabidopsis</term>
<term>Plant Proteins</term>
<term>Populus</term>
<term>Salt Tolerance</term>
<term>Stress, Physiological</term>
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<term>Arabidopsis</term>
<term>Populus</term>
<term>Protéines végétales</term>
<term>Stress physiologique</term>
<term>Tolérance au sel</term>
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<term>Plant Proteins</term>
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<term>Protéines végétales</term>
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<term>Plant Proteins</term>
<term>Subcellular Fractions</term>
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<term>Protéines végétales</term>
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<term>Arabidopsis</term>
<term>Populus</term>
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<b>KEY MESSAGE</b>
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<p>PtHSP17.8 was regulated by various abiotic stresses. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses through maintain ROS homeostasis and cooperate with stress-related genes in Arabidopsis. Small heat shock proteins (sHSPs) play important roles in response to diverse biotic and abiotic stresses, especially in heat tolerance. However, limited information is available on the stress tolerance roles of sHSPs in woody species. To explore the function of sHSPs in poplar, we isolated and characterized PtHSP17.8 from Populus trichocarpa. Phylogenetic analysis and subcellular localization revealed that PtHSP17.8 was a cytosolic class I sHSP. The gene expression profile of PtHSP17.8 in various tissues showed that it was significantly accumulated in stem and root, which was consistent with the GUS expression pattern driven by promoter of PtHSP17.8. The expression of PtHSP17.8 could be induced by various abiotic stresses and significantly activated by heat stress. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses in Arabidopsis. The seedling survival rate, root length, relative water content, antioxidative enzyme activities, proline, and soluble sugar content were increased in transgenic Arabidopsis under heat and salt stresses, but not in normal condition. The co-expression network of PtHSP17.8 were constructed and demonstrated many stress responsive genes included. The stress-related genes in the co-expression network were up-regulated in the PtHSP17.8 overexpression seedlings. These results suggest that PtHSP17.8 confers heat and salt tolerances in plants.</p>
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<Title>Plant cell reports</Title>
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<ArticleTitle>The Populus trichocarpa PtHSP17.8 involved in heat and salt stress tolerances.</ArticleTitle>
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<AbstractText Label="KEY MESSAGE" NlmCategory="CONCLUSIONS">PtHSP17.8 was regulated by various abiotic stresses. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses through maintain ROS homeostasis and cooperate with stress-related genes in Arabidopsis. Small heat shock proteins (sHSPs) play important roles in response to diverse biotic and abiotic stresses, especially in heat tolerance. However, limited information is available on the stress tolerance roles of sHSPs in woody species. To explore the function of sHSPs in poplar, we isolated and characterized PtHSP17.8 from Populus trichocarpa. Phylogenetic analysis and subcellular localization revealed that PtHSP17.8 was a cytosolic class I sHSP. The gene expression profile of PtHSP17.8 in various tissues showed that it was significantly accumulated in stem and root, which was consistent with the GUS expression pattern driven by promoter of PtHSP17.8. The expression of PtHSP17.8 could be induced by various abiotic stresses and significantly activated by heat stress. Overexpression of PtHSP17.8 enhanced the tolerance to heat and salt stresses in Arabidopsis. The seedling survival rate, root length, relative water content, antioxidative enzyme activities, proline, and soluble sugar content were increased in transgenic Arabidopsis under heat and salt stresses, but not in normal condition. The co-expression network of PtHSP17.8 were constructed and demonstrated many stress responsive genes included. The stress-related genes in the co-expression network were up-regulated in the PtHSP17.8 overexpression seedlings. These results suggest that PtHSP17.8 confers heat and salt tolerances in plants.</AbstractText>
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