Is change in ovary carbon status a cause or a consequence of maize ovary abortion in water deficit during flowering?
| العنوان: | Is change in ovary carbon status a cause or a consequence of maize ovary abortion in water deficit during flowering? |
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| المؤلفون: | Olivier Turc, François Tardieu, Vincent Oury, Duyên Prodhomme, Yves Gibon, Jean-Philippe Pichon, Cecílio Frois Caldeira |
| المساهمون: | Écophysiologie des Plantes sous Stress environnementaux (LEPSE), Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Biologie du fruit et pathologie (BFP), Université Bordeaux Segalen - Bordeaux 2-Institut National de la Recherche Agronomique (INRA)-Université Sciences et Technologies - Bordeaux 1 (UB), Centre de Recherche de Chappes, BIOGEMMA, ANR– 08–GENM–003, ANR-08-GENM-0003,DROMADAiR,Un maïs adapté à la sécheresse : développement de l'épi et surface foliaire(2008), European Project: 244374,EC:FP7:KBBE,FP7-KBBE-2009-3,DROPS(2010), 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), Université Sciences et Technologies - Bordeaux 1-Université Bordeaux Segalen - Bordeaux 2-Institut National de la Recherche Agronomique (INRA) |
| المصدر: | Plant Physiology Plant Physiology, 2016, 71 (2), pp.997-1008. ⟨10.1104/pp.15.01130⟩ Plant Physiology, American Society of Plant Biologists, 2016, 71 (2), pp.997-1008. ⟨10.1104/pp.15.01130⟩ |
| بيانات النشر: | HAL CCSD, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Sucrose, Carbon metabolism, Physiology, Plant Science, Carbohydrate metabolism, Abortion, Biology, Photosynthesis, 01 natural sciences, Cell wall, 03 medical and health sciences, chemistry.chemical_compound, Botany, Genetics, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Sugar, 2. Zero hunger, fungi, food and beverages, Zea mays, Horticulture, 030104 developmental biology, chemistry, 13. Climate action, 010606 plant biology & botany |
| الوصف: | Duyên Prodhomme INRA Plateforme Métabolome Bordeaux UMR BFP; International audience; Flower or grain abortion causes large yield losses under water deficit. In maize (Zea mays), it is often attributed to a carbon limitation via the disruption of sucrose cleavage by cell wall invertases in developing ovaries. We have tested this hypothesis versus another linked to the expansive growth of ovaries and silks. We have measured, in silks and ovaries of well-watered or moderately droughted plants, the transcript abundances of genes involved in either tissue expansion or sugar metabolism, together with the concentrations and amounts of sugars, and with the activities of major enzymes of carbon metabolism. Photosynthesis and indicators of sugar export, measured during water deprivation, suggested sugar export maintained by the leaf. The first molecular changes occurred in silks rather than in ovaries and involved genes affecting expansive growth rather than sugar metabolism. Changes in the concentrations and amounts of sugars and in the activities of enzymes of sugar metabolism occurred in apical ovaries that eventually aborted, but probably after the switch to abortion of these ovaries. Hence, we propose that, under moderate water deficits corresponding to most European drought scenarios, changes in carbon metabolism during flowering time are a consequence rather than a cause of the beginning of ovary abortion. A carbon-driven ovary abortion may occur later in the cycle in the case of carbon shortage or under very severe water deficits. These findings support the view that, until the end of silking, expansive growth of reproductive organs is the primary event leading to abortion, rather than a disruption of carbon metabolism. |
| اللغة: | English |
| تدمد: | 0032-0889 1532-2548 |
| DOI: | 10.1104/pp.15.01130⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e066be79e1a3fe2d68205f352be170f https://hal.inrae.fr/hal-02631520 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....0e066be79e1a3fe2d68205f352be170f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00320889 15322548 |
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| DOI: | 10.1104/pp.15.01130⟩ |