caa a22 4500 46902836X CHVBK 20180323132736.0 cr unu---uuuuu 170328e19920601xx s 000 0 eng 10.1007/BF00235076 doi (NATIONALLICENCE)springer-10.1007/BF00235076 Changes in indole-3-acetic acid levels during tomato ( Lycopersicon esculentum Mill.) seed development [Elektronische Daten] [Valérie Hocher, Bruno Sotta, Régis Maldiney, Magda Bonnet, Emile Miginiac] Summary: The changes in the level of indole-3-acetic acid (IAA) were investigated in seeds and fruit tissues-placenta and mesocarp-during tomato (Lycopersicon esculentum Mill.) zygotic embryogenesis, which was characterized through eight morphological embryo stages [from globular (stage 1) to mature embryo (stage 8)]. In whole seeds, IAA levels increased mainly at stage 3 (young torpedo) and at stage 5 (late torpedo stage). As the seed matured and dehydrated, IAA levels decreased and showed a new distribution pattern within seed structures, preferentially in endosperm tissue. IAA contents in fruit tissues were lower but followed the same pattern as those of seeds. These data support the hypothesis of IAA biosynthesis in seeds with a transient role of the endosperm at the end of embryo development and suggest a role of IAA in fruit and seed growth. Moreover a comparison of IAA and ABA changes suggests that IAA could be especially necessary for the beginning of embryo growth, whereas ABA could act mainly at the end of the growth phase. Springer-Verlag, 1992 Hocher Valérie Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut Sotta Bruno Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut Maldiney Régis Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut Bonnet Magda Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut Miginiac Emile Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut Plant Cell Reports Springer-Verlag 11/5-6(1992-06-01), 253-256 0721-7714 11:5-6<253 1992 11 299 https://doi.org/10.1007/BF00235076 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00235076 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hocher Valérie Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut NATIONALLICENCE 700 1- Sotta Bruno Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut NATIONALLICENCE 700 1- Maldiney Régis Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut NATIONALLICENCE 700 1- Bonnet Magda Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut NATIONALLICENCE 700 1- Miginiac Emile Laboratoire de Physiologie du Développement des Plantes, URA CNRS 1180, T 53-Etage 5, Boite 156, Université P et M Curie, 4 place Jussieu, 75252, 05, Paris, Cedex, France aut NATIONALLICENCE 773 0- Plant Cell Reports Springer-Verlag 11/5-6(1992-06-01), 253-256 0721-7714 11:5-6<253 1992 11 299 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer