Iron-superoxide dismutase and monodehydroascorbate reductase transcripts accumulate in response to internode rubbing in tomato.
Identifieur interne : 000019 ( Main/Exploration ); précédent : 000018; suivant : 000020Iron-superoxide dismutase and monodehydroascorbate reductase transcripts accumulate in response to internode rubbing in tomato.
Auteurs : Ichrak Ben Rejeb [Tunisie] ; Catherine Lenne ; Nathalie Leblanc ; Jean-Louis Julien ; Saïda Ammar ; Sadok Bouzid ; Abdelkader AyadiSource :
- Comptes rendus biologies [ 1631-0691 ] ; 2004.
Descripteurs français
- KwdFr :
- Données de séquences moléculaires (MeSH), Lycopersicon esculentum (génétique), Lycopersicon esculentum (physiologie), NADH, NADPH oxidoreductases (génétique), Parties aériennes de plante (génétique), Parties aériennes de plante (physiologie), Stimulation physique (MeSH), Superoxide dismutase (génétique), Transcription génétique (MeSH).
- MESH :
English descriptors
- KwdEn :
- Lycopersicon esculentum (genetics), Lycopersicon esculentum (physiology), Molecular Sequence Data (MeSH), NADH, NADPH Oxidoreductases (genetics), Physical Stimulation (MeSH), Plant Components, Aerial (genetics), Plant Components, Aerial (physiology), Superoxide Dismutase (genetics), Transcription, Genetic (MeSH).
- MESH :
- chemical , genetics : NADH, NADPH Oxidoreductases, Superoxide Dismutase.
- genetics : Lycopersicon esculentum, Plant Components, Aerial.
- physiology : Lycopersicon esculentum, Plant Components, Aerial.
- Molecular Sequence Data, Physical Stimulation, Transcription, Genetic.
Abstract
A cDNA encoding an iron-superoxide dismutase (Fe-SOD) was isolated by RACE-PCR from a Lycopersicon esculentum cDNA library. The Fe-SOD cDNA consists of a 746-bp open reading frame and is predicted to encode a protein of 249 amino acids with a calculated molecular mass of 27.9 kDa. The deduced amino acid sequence was very similar to other plant Fe-SODs and a potential chloroplastic targeting was found. To study the induction of oxidative burst in response to mechanical stimulation, the accumulation of Fe-SOD and monodehydroascorbate reductase (MDHAR) mRNAs was analysed in response to young growing internode rubbing in tomato plants. Northern analyses show that Fe-SOD mRNA and MDHAR mRNA accumulated in tomato internodes 10 min after the mechanical stimulation. These results suggest that reactive oxygen species are early involved in the response of a plant to a mechanical stimulation, such as rubbing. The nucleotide sequence data reported in this paper will appear in the NCBI Nucleotide Sequence Databases under the accession number AY262025.
DOI: 10.1016/j.crvi.2004.06.002
PubMed: 15344817
Affiliations:
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Le document en format XML
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wicri:level="1"><nlm:affiliation>Laboratoire de biologie et physiologie végétales, département de biologie, faculté des sciences de Tunis, campus universitaire, 1060 Tunis, Tunisia. interlisa@zWallet.com</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Laboratoire de biologie et physiologie végétales, département de biologie, faculté des sciences de Tunis, campus universitaire, 1060 Tunis</wicri:regionArea><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Lenne, Catherine" sort="Lenne, Catherine" uniqKey="Lenne C" first="Catherine" last="Lenne">Catherine Lenne</name></author><author><name sortKey="Leblanc, Nathalie" sort="Leblanc, Nathalie" uniqKey="Leblanc N" first="Nathalie" last="Leblanc">Nathalie Leblanc</name></author><author><name sortKey="Julien, Jean Louis" sort="Julien, Jean Louis" uniqKey="Julien J" first="Jean-Louis" last="Julien">Jean-Louis 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The Fe-SOD cDNA consists of a 746-bp open reading frame and is predicted to encode a protein of 249 amino acids with a calculated molecular mass of 27.9 kDa. The deduced amino acid sequence was very similar to other plant Fe-SODs and a potential chloroplastic targeting was found. To study the induction of oxidative burst in response to mechanical stimulation, the accumulation of Fe-SOD and monodehydroascorbate reductase (MDHAR) mRNAs was analysed in response to young growing internode rubbing in tomato plants. Northern analyses show that Fe-SOD mRNA and MDHAR mRNA accumulated in tomato internodes 10 min after the mechanical stimulation. These results suggest that reactive oxygen species are early involved in the response of a plant to a mechanical stimulation, such as rubbing. 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