Acclimation of leaf nitrogen to vertical light gradient at anthesis in wheat is a whole-plant process that scales with the size of the canopy
| العنوان: | Acclimation of leaf nitrogen to vertical light gradient at anthesis in wheat is a whole-plant process that scales with the size of the canopy |
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| المؤلفون: | Pierre Martre, Oorbessy Gaju, M. John Foulkes, Vincent Allard, Jacques Le Gouis, Delphine Moreau |
| المساهمون: | Génétique Diversité et Ecophysiologie des Céréales ( GDEC ), Institut National de la Recherche Agronomique ( INRA ) -Université Blaise Pascal - Clermont-Ferrand 2 ( UBP ), Agroécologie [Dijon], Institut National de la Recherche Agronomique ( INRA ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, UK ( UON ), Génétique Diversité et Ecophysiologie des Céréales (GDEC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, University of Nottingham, UK (UON), Institut National de la Recherche Agronomique (INRA)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP) |
| المصدر: | Plant Physiology Plant Physiology, American Society of Plant Biologists, 2012, 160 (3), pp.1479-1490. 〈10.1104/pp.112.199935〉 Plant Physiology, American Society of Plant Biologists, 2012, 160 (3), pp.1479-1490. ⟨10.1104/pp.112.199935⟩ Plant Physiology, 2012, 160 (3), pp.1479-1490. ⟨10.1104/pp.112.199935⟩ |
| بيانات النشر: | HAL CCSD, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | 0106 biological sciences, Canopy, Crops, Agricultural, Light, Physiology, Nitrogen, [SDV]Life Sciences [q-bio], Acclimatization, chemistry.chemical_element, Plant Science, Biology, 01 natural sciences, Crop, Anthesis, Genetics, Cultivar, Photosynthesis, Nitrogen cycle, Triticum, Whole Plant and Ecophysiology, 2. Zero hunger, Photons, [ SDV ] Life Sciences [q-bio], 04 agricultural and veterinary sciences, Organ Size, 15. Life on land, Molar absorptivity, Plant Leaves, chemistry, Agronomy, 040103 agronomy & agriculture, Linear Models, 0401 agriculture, forestry, and fisheries, 010606 plant biology & botany |
| الوصف: | Vertical leaf nitrogen (N) gradient within a canopy is classically considered as a key adaptation to the local light environment that would tend to maximize canopy photosynthesis. We studied the vertical leaf N gradient with respect to the light gradient for wheat (Triticum aestivum) canopies with the aims of quantifying its modulation by crop N status and genetic variability and analyzing its ecophysiological determinants. The vertical distribution of leaf N and light was analyzed at anthesis for 16 cultivars grown in the field in two consecutive seasons under two levels of N. The N extinction coefficient with respect to light (b) varied with N supply and cultivar. Interestingly, a scaling relationship was observed between b and the size of the canopy for all the cultivars in the different environmental conditions. The scaling coefficient of the b-green area index relationship differed among cultivars, suggesting that cultivars could be more or less adapted to low-productivity environments. We conclude that the acclimation of the leaf N gradient to the light gradient is a whole-plant process that depends on canopy size. This study demonstrates that modeling leaf N distribution and canopy expansion based on the assumption that leaf N distribution parallels that of the light is inappropriate. We provide a robust relationship accounting for vertical leaf N gradient with respect to vertical light gradient as a function of canopy size. |
| اللغة: | English |
| تدمد: | 0032-0889 1532-2548 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1f660bbfbfc8335df4f92a63bbf1e90Test https://hal.archives-ouvertes.fr/hal-01001606Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....f1f660bbfbfc8335df4f92a63bbf1e90 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00320889 15322548 |
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