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Laboratory evaluation of transgenic Populus davidiana×Populus bolleana expressing Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3 genes against gypsy moth and fall webworm.

Identifieur interne : 001319 ( Main/Exploration ); précédent : 001318; suivant : 001320

Laboratory evaluation of transgenic Populus davidiana×Populus bolleana expressing Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3 genes against gypsy moth and fall webworm.

Auteurs : Liping Ding [République populaire de Chine] ; Yajuan Chen [République populaire de Chine] ; Xiaoli Wei [République populaire de Chine] ; Mi Ni [République populaire de Chine] ; Jiewei Zhang [République populaire de Chine] ; Hongzhi Wang [République populaire de Chine] ; Zhen Zhu [République populaire de Chine] ; Jianhua Wei [République populaire de Chine]

Source :

RBID : pubmed:28582405

Descripteurs français

English descriptors

Abstract

Transgenic poplar lines 'Shanxin' (Populus davidiana×Populus bolleana) were generated via Agrobacterium-mediated transformation. The transgenic lines carried the expression cassettes of Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3, respectively. The expression levels of the exogenous insect resistance genes in the transgenic lines were determined by Q-PCR and Western blot. Leaves of the transgenic lines were used for insect feeding bioassays on first instar larvae of the gypsy moth (Lymantria dispar) and fall webworm (Hyphantria cunea). At 5 d of feeding, the mean mortalities of larvae feeding on Cry1Ac + SCK and Cry1Ah3 transgenic poplars leaves were 97% and 91%, while mortality on Cry9Aa3 transgenic lines was about 49%. All gypsy moth and fall webworm larvae were killed in 7-9 days after feeding on leaves from Cry1Ac + SCK or Cry1Ah3 transgenic poplars, while all the fall webworm larvae were killed in 11 days and about 80% of gypsy moth larvae were dead in 14 days after feeding on those from Cry9Aa3 transgenic lines. It was concluded that the transgenic lines of Cry1Ac + SCK and Cry1Ah3 were highly toxic to larvae of both insect species while lines with Cry9Aa3 had lower toxicity,and H. cunea larvae are more sensitive to the insecticidal proteins compared to L. dispar. Transgenic poplar lines toxic to L. dispar and H. cunea could be used to provide Lepidoptera pest resistance to selected strains of poplar trees.

DOI: 10.1371/journal.pone.0178754
PubMed: 28582405
PubMed Central: PMC5459438


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Le document en format XML

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<term>Agrobacterium tumefaciens (genetics)</term>
<term>Agrobacterium tumefaciens (metabolism)</term>
<term>Animals (MeSH)</term>
<term>Bacterial Proteins (genetics)</term>
<term>Bacterial Proteins (immunology)</term>
<term>Crosses, Genetic (MeSH)</term>
<term>Endotoxins (genetics)</term>
<term>Endotoxins (immunology)</term>
<term>Gene Expression (MeSH)</term>
<term>Hemolysin Proteins (genetics)</term>
<term>Hemolysin Proteins (immunology)</term>
<term>Larva (growth & development)</term>
<term>Lepidoptera (growth & development)</term>
<term>Moths (growth & development)</term>
<term>Pest Control, Biological (methods)</term>
<term>Plant Breeding (MeSH)</term>
<term>Plant Immunity (genetics)</term>
<term>Plant Leaves (genetics)</term>
<term>Plant Leaves (immunology)</term>
<term>Plant Leaves (parasitology)</term>
<term>Plants, Genetically Modified (MeSH)</term>
<term>Populus (genetics)</term>
<term>Populus (immunology)</term>
<term>Populus (parasitology)</term>
<term>Protein Isoforms (genetics)</term>
<term>Protein Isoforms (immunology)</term>
<term>Transformation, Genetic (MeSH)</term>
<term>Transgenes (MeSH)</term>
</keywords>
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<term>Agrobacterium tumefaciens (génétique)</term>
<term>Agrobacterium tumefaciens (métabolisme)</term>
<term>Amélioration des plantes (MeSH)</term>
<term>Animaux (MeSH)</term>
<term>Croisements génétiques (MeSH)</term>
<term>Endotoxines (génétique)</term>
<term>Endotoxines (immunologie)</term>
<term>Expression des gènes (MeSH)</term>
<term>Feuilles de plante (génétique)</term>
<term>Feuilles de plante (immunologie)</term>
<term>Feuilles de plante (parasitologie)</term>
<term>Hémolysines (génétique)</term>
<term>Hémolysines (immunologie)</term>
<term>Immunité des plantes (génétique)</term>
<term>Isoformes de protéines (génétique)</term>
<term>Isoformes de protéines (immunologie)</term>
<term>Larve (croissance et développement)</term>
<term>Lepidoptera (croissance et développement)</term>
<term>Lutte biologique contre les nuisibles (méthodes)</term>
<term>Papillons de nuit (croissance et développement)</term>
<term>Populus (génétique)</term>
<term>Populus (immunologie)</term>
<term>Populus (parasitologie)</term>
<term>Protéines bactériennes (génétique)</term>
<term>Protéines bactériennes (immunologie)</term>
<term>Transformation génétique (MeSH)</term>
<term>Transgènes (MeSH)</term>
<term>Végétaux génétiquement modifiés (MeSH)</term>
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<keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en">
<term>Bacterial Proteins</term>
<term>Endotoxins</term>
<term>Hemolysin Proteins</term>
<term>Protein Isoforms</term>
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<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr">
<term>Larve</term>
<term>Lepidoptera</term>
<term>Papillons de nuit</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en">
<term>Agrobacterium tumefaciens</term>
<term>Plant Immunity</term>
<term>Plant Leaves</term>
<term>Populus</term>
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<term>Moths</term>
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<term>Feuilles de plante</term>
<term>Hémolysines</term>
<term>Immunité des plantes</term>
<term>Isoformes de protéines</term>
<term>Populus</term>
<term>Protéines bactériennes</term>
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<term>Endotoxines</term>
<term>Feuilles de plante</term>
<term>Hémolysines</term>
<term>Isoformes de protéines</term>
<term>Populus</term>
<term>Protéines bactériennes</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="immunology" xml:lang="en">
<term>Bacterial Proteins</term>
<term>Endotoxins</term>
<term>Hemolysin Proteins</term>
<term>Plant Leaves</term>
<term>Populus</term>
<term>Protein Isoforms</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en">
<term>Agrobacterium tumefaciens</term>
</keywords>
<keywords scheme="MESH" qualifier="methods" xml:lang="en">
<term>Pest Control, Biological</term>
</keywords>
<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr">
<term>Agrobacterium tumefaciens</term>
</keywords>
<keywords scheme="MESH" qualifier="méthodes" xml:lang="fr">
<term>Lutte biologique contre les nuisibles</term>
</keywords>
<keywords scheme="MESH" qualifier="parasitologie" xml:lang="fr">
<term>Feuilles de plante</term>
<term>Populus</term>
</keywords>
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<term>Plant Leaves</term>
<term>Populus</term>
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<term>Transformation, Genetic</term>
<term>Transgenes</term>
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<term>Animaux</term>
<term>Croisements génétiques</term>
<term>Expression des gènes</term>
<term>Transformation génétique</term>
<term>Transgènes</term>
<term>Végétaux génétiquement modifiés</term>
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<div type="abstract" xml:lang="en">Transgenic poplar lines 'Shanxin' (Populus davidiana×Populus bolleana) were generated via Agrobacterium-mediated transformation. The transgenic lines carried the expression cassettes of Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3, respectively. The expression levels of the exogenous insect resistance genes in the transgenic lines were determined by Q-PCR and Western blot. Leaves of the transgenic lines were used for insect feeding bioassays on first instar larvae of the gypsy moth (Lymantria dispar) and fall webworm (Hyphantria cunea). At 5 d of feeding, the mean mortalities of larvae feeding on Cry1Ac + SCK and Cry1Ah3 transgenic poplars leaves were 97% and 91%, while mortality on Cry9Aa3 transgenic lines was about 49%. All gypsy moth and fall webworm larvae were killed in 7-9 days after feeding on leaves from Cry1Ac + SCK or Cry1Ah3 transgenic poplars, while all the fall webworm larvae were killed in 11 days and about 80% of gypsy moth larvae were dead in 14 days after feeding on those from Cry9Aa3 transgenic lines. It was concluded that the transgenic lines of Cry1Ac + SCK and Cry1Ah3 were highly toxic to larvae of both insect species while lines with Cry9Aa3 had lower toxicity,and H. cunea larvae are more sensitive to the insecticidal proteins compared to L. dispar. Transgenic poplar lines toxic to L. dispar and H. cunea could be used to provide Lepidoptera pest resistance to selected strains of poplar trees.</div>
</front>
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<Day>18</Day>
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<ArticleTitle>Laboratory evaluation of transgenic Populus davidiana×Populus bolleana expressing Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3 genes against gypsy moth and fall webworm.</ArticleTitle>
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<AbstractText>Transgenic poplar lines 'Shanxin' (Populus davidiana×Populus bolleana) were generated via Agrobacterium-mediated transformation. The transgenic lines carried the expression cassettes of Cry1Ac + SCK, Cry1Ah3, and Cry9Aa3, respectively. The expression levels of the exogenous insect resistance genes in the transgenic lines were determined by Q-PCR and Western blot. Leaves of the transgenic lines were used for insect feeding bioassays on first instar larvae of the gypsy moth (Lymantria dispar) and fall webworm (Hyphantria cunea). At 5 d of feeding, the mean mortalities of larvae feeding on Cry1Ac + SCK and Cry1Ah3 transgenic poplars leaves were 97% and 91%, while mortality on Cry9Aa3 transgenic lines was about 49%. All gypsy moth and fall webworm larvae were killed in 7-9 days after feeding on leaves from Cry1Ac + SCK or Cry1Ah3 transgenic poplars, while all the fall webworm larvae were killed in 11 days and about 80% of gypsy moth larvae were dead in 14 days after feeding on those from Cry9Aa3 transgenic lines. It was concluded that the transgenic lines of Cry1Ac + SCK and Cry1Ah3 were highly toxic to larvae of both insect species while lines with Cry9Aa3 had lower toxicity,and H. cunea larvae are more sensitive to the insecticidal proteins compared to L. dispar. Transgenic poplar lines toxic to L. dispar and H. cunea could be used to provide Lepidoptera pest resistance to selected strains of poplar trees.</AbstractText>
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