Does Ethylene Mediate Cluster Root Formation under Iron Deficiency?
Identifieur interne : 000228 ( France/Analysis ); précédent : 000227; suivant : 000229Does Ethylene Mediate Cluster Root Formation under Iron Deficiency?
Auteurs : H. Zaid [Maroc] ; R. El Morabet [Maroc] ; H. G. Diem [France, Maroc] ; M. Arahou [Maroc]Source :
- Annals of Botany [ 0305-7364 ] ; 2003-11.
Descripteurs français
- KwdFr :
- MESH :
- antagonistes et inhibiteurs : Éthylènes.
- déficit : Fer.
- pharmacologie : Composés du fer III, Éthylènes.
- physiologie : Angiospermes, Facteur de croissance végétal, Racines de plante.
- Angiospermes, Chlorures, Modèles biologiques, Racines de plante.
English descriptors
- KwdEn :
- Angiosperms (drug effects), Angiosperms (physiology), Chlorides, Ethylenes (antagonists & inhibitors), Ethylenes (pharmacology), Ferric Compounds (pharmacology), Iron (deficiency), Key words: Ethylene, Casuarina, cluster roots, ACC, ethylene inhibitors, Fe deficiency., Models, Biological, Plant Growth Regulators (physiology), Plant Roots (drug effects), Plant Roots (physiology).
- MESH :
- chemical , antagonists & inhibitors : Ethylenes.
- chemical , deficiency : Iron.
- chemical , pharmacology : Ethylenes, Ferric Compounds.
- chemical , physiology : Plant Growth Regulators.
- chemical : Chlorides.
- drug effects : Angiosperms, Plant Roots.
- physiology : Angiosperms, Plant Roots.
- Models, Biological.
Abstract
Casuarina glauca develops proteoid (cluster) roots in response to Fe deficiency. This study set out to investigate the possible involvement of ethylene in the initiation and/or the morphogenesis of cluster roots (CR). For this purpose, the effect of Ag+ added as silver thiosulfate, an inhibitor of ethylene action has been studied in plants growing hydroponically. No CR formation was observed in these growth conditions. Inhibition of ethylene biosynthesis by aminoethoxyvinylglycine, 1‐ aminoisobutyric acid, aminoxyacetic acid or cobalt chloride also eliminated the positive effect of Fe deficiency on CR formation in C. glauca. CR were not formed in Fe‐ deficient roots in the presence of ethylene inhibitors, suggesting a role for ethylene in the morphological responses to Fe deficiency. Interestingly, treatment of Casuarina plants with the ethylene precursor 1‐aminocyclopropane‐1‐carboxylic acid stimulated significantly the formation of CR, even if plants are supplied with Fe. However, this stimulation did not reach the level of CR obtained in Fe‐deficient plants. These results suggest that an ethylene‐mediated signalling pathway is involved in CR formation process in C. glauca.
Url:
- https://api.istex.fr/document/0CBB7376FE72397C31ACC94599AD90A0E19A9EB6/fulltext/pdf
- http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4244850
DOI: 10.1093/aob/mcg186
Affiliations:
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Diem</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Rue Juliette Savar 37, 94·000, Créteil</wicri:regionArea><wicri:noRegion>Créteil</wicri:noRegion><wicri:noRegion>Créteil</wicri:noRegion></affiliation><affiliation wicri:level="3"><country xml:lang="fr">Maroc</country><wicri:regionArea>Department of Biology, Faculty of Sciences, University Mohammed V‐Agdal, BP 1014, Avenue Ibn Battouta, Rabat</wicri:regionArea><placeName><settlement type="city">Rabat</settlement><region nuts="2">Rabat-Salé-Kénitra</region></placeName></affiliation></author><author><name sortKey="Arahou, M" sort="Arahou, M" uniqKey="Arahou M" first="M." last="Arahou">M. 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This study set out to investigate the possible involvement of ethylene in the initiation and/or the morphogenesis of cluster roots (CR). For this purpose, the effect of Ag+ added as silver thiosulfate, an inhibitor of ethylene action has been studied in plants growing hydroponically. No CR formation was observed in these growth conditions. Inhibition of ethylene biosynthesis by aminoethoxyvinylglycine, 1‐ aminoisobutyric acid, aminoxyacetic acid or cobalt chloride also eliminated the positive effect of Fe deficiency on CR formation in C. glauca. CR were not formed in Fe‐ deficient roots in the presence of ethylene inhibitors, suggesting a role for ethylene in the morphological responses to Fe deficiency. Interestingly, treatment of Casuarina plants with the ethylene precursor 1‐aminocyclopropane‐1‐carboxylic acid stimulated significantly the formation of CR, even if plants are supplied with Fe. However, this stimulation did not reach the level of CR obtained in Fe‐deficient plants. These results suggest that an ethylene‐mediated signalling pathway is involved in CR formation process in C. glauca.</div></front></TEI><affiliations><list><country><li>France</li><li>Maroc</li></country><region><li>Rabat-Salé-Kénitra</li></region><settlement><li>Rabat</li></settlement></list><tree><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Zaid, H" sort="Zaid, H" uniqKey="Zaid H" first="H." last="Zaid">H. Zaid</name></region><name sortKey="Arahou, M" sort="Arahou, M" uniqKey="Arahou M" first="M." last="Arahou">M. Arahou</name><name sortKey="Arahou, M" sort="Arahou, M" uniqKey="Arahou M" first="M." last="Arahou">M. Arahou</name><name sortKey="Diem, H G" sort="Diem, H G" uniqKey="Diem H" first="H. G." last="Diem">H. G. Diem</name><name sortKey="El Morabet, R" sort="El Morabet, R" uniqKey="El Morabet R" first="R." last="El Morabet">R. El Morabet</name><name sortKey="El Morabet, R" sort="El Morabet, R" uniqKey="El Morabet R" first="R." last="El Morabet">R. El Morabet</name></country><country name="France"><noRegion><name sortKey="Diem, H G" sort="Diem, H G" uniqKey="Diem H" first="H. G." last="Diem">H. G. Diem</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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