Ethylene modifies architecture of root system in response to stomatal opening and water allocation changes between root and shoot
| Autor: | Carole Deleu, Erwan Le Deunff, Lemauviel-Lavenant Servane, Leblanc Antonin, Beauclair Patrick |
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| Přispěvatelé: | Ecophysiologie Végétale, Agronomie et Nutritions (EVA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Recherche Agronomique (INRA), Normandie Université (NU), Amélioration des Plantes et Biotechnologies Végétales (APBV), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Institut National de la Recherche Agronomique (INRA)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
0303 health sciences Stomatal conductance Ethylene Activator (genetics) Plant physiology Plant Science Root system Biology Root hair 01 natural sciences [SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics 03 medical and health sciences chemistry.chemical_compound Horticulture chemistry Shoot Botany Elongation 030304 developmental biology 010606 plant biology & botany |
| Zdroj: | Plant Signaling and Behavior Plant Signaling and Behavior, 2009, 4 (1), pp.44-46. ⟨10.4161/psb⟩ Plant Signaling and Behavior, Taylor & Francis, 2009, 4 (1), pp.44-46. ⟨10.4161/psb⟩ |
| ISSN: | 1559-2316 1559-2324 |
| DOI: | 10.4161/psb⟩ |
| Popis: | International audience; Ethylene plays a key role in the elongation of exploratory and root hair systems in plants, as demonstrated by pharmacological modulation of the activity of ethylene biosynthesis enzymes: ACC synthase (ACS) and ACC oxidase (ACO). Thus, treatments with high concentrations (10 µM) of aminoethoxyvinylglycine (AVG, inhibitor of ACS) and 1-aminocyclopropane carboxylic acid (ACC, ethylene precursor, ACO activator) severely decrease the elongation of the exploratory root system but induce opposite effects on the root hair system: root hair length and numbers were increased in seedlings treated with ACC, whereas they were reduced in seedlings treated with AVG. Until now, such elongation changes of root architecture had not been questioned in terms of nitrate uptake. In the march issue of Plant Physiology we report that N uptake and nitrate transporter BnNrt2.1 transcript level were markedly reduced in ACC treated seedlings, but were increased in AVG treated seedlings compared to the control.1 Because recent studies have revealed that ethylene can also modulate stomatal opening as well as root hair cell elongation, we have examined whether pharmacological modulation of ethylene biosynthesis could affect, in an integrated manner, and at a whole-plant level, the exploratory and root hair systems, through changes of stomatal conductance and water allocation between the root and shoot. |
| Databáze: | OpenAIRE |
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