المؤلفون: Jacob Lage, Simon Orford, Elizabeth A Chapman, Simon Griffiths

المصدر: Journal of Experimental Botany

مصطلحات موضوعية: Senescence, senescence, Physiology, Quantitative Trait Loci, Mutant, exome capture, Plant Science, Biology, Bulk segregant analysis, wheat, mutant, Allele, Gene, Alleles, Triticum, Genetic association, Genetics, AcademicSubjects/SCI01210, food and beverages, Research Papers, Phenotype, Forward genetics, forward genetics, staygreen, remobilization, Crop Molecular Genetics, NAM, grain fill, Edible Grain, Genetic screen

الوصف: Senescence is a complex trait under genetic and environmental control, in which resources are remobilized from vegetative tissue into grain. Delayed senescence, or ‘staygreen’ traits, can confer stress tolerance, with extended photosynthetic activity hypothetically sustaining grain filling. The genetics of senescence regulation are largely unknown, with senescence variation often correlated with phenological traits. Here, we confirm staygreen phenotypes of two Triticum aestivum cv. Paragon ethyl methane sulfonate mutants previously identified during a forward genetic screen and selected for their agronomic performance, similar phenology, and differential senescence phenotypes. Grain filling experiments confirmed a positive relationship between onset of senescence and grain fill duration, reporting an associated ~14% increase in final dry grain weight for one mutant (P
Two staygreen mutants were identified for which grain fill duration and grain weight were enhanced. Independent amino acid substitutions within NAC subdomain IV of NAM-1 homoeologues are proposed as causative.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::676a0fdb9e72c321e8bd1bcc7e2b8902Test
https://doi.org/10.1093/jxb/erab368Test

المؤلفون: Kyelle Byne, Peter Ryser

المصدر: Journal of Experimental Botany

مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, Root growth, Senescence, Stomatal conductance, leaf senescence, Physiology, nutrient remobilization, nutrient uptake, spring temperature, Plant Science, 15n tracer, 01 natural sciences, growing season length, Trees, root senescence, 03 medical and health sciences, Nutrient, Autumn, Cyperaceae, Overwintering, biology, Temperature, nutrient storage, 15. Life on land, 15N enrichment, biology.organism_classification, Research Papers, wetland, Plant Leaves, Horticulture, 030104 developmental biology, Plant—Environment Interactions, 13. Climate action, Rhynchospora alba, Seasons, 010606 plant biology & botany

الوصف: Autumn senescence is delayed and nitrogen uptake extended in response to a late onset of spring, but the resulting inefficiency of remobilization reduces the amount of nutrients stored for winter.
Environmental and physiological factors underlying variation in timing of autumn senescence are not well known. We investigated how the time of the onset of the growth in spring affects senescence and its functional consequences for nitrogen (N) uptake in autumn and storage of N for the winter, in a species that each year develops its bulbils for storage and overwintering anew. Rhynchospora alba was grown outdoors with two treatments, identical except for a 3 week difference in the start of growth in May. Leaf and root growth and senescence, and N uptake were recorded from August to November. By August, late-starting plants had caught up in size and total N content, but had smaller bulbils. They had a higher δ 13C, indicating a higher stomatal conductance during growth. Leaf and root senescence were delayed, extending 15N tracer uptake by 4 weeks. Nevertheless, after senescence, plants with an early start had 55% more N in their overwintering bulbils, due to earlier and more efficient remobilization. We conclude that timing of senescence in R. alba is a result of an interplay between the status of winter storage and cold temperatures, constrained by a trade-off between prolonged nutrient uptake and efficient remobilization of nutrients.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c25fe681b35dc36eeffd81b91b6eb21Test
https://doi.org/10.1093/jxb/erz505Test

المؤلفون: Emily A Pettengill, Fei Gao, Joshua J. Blakeslee, Rongshoung Lin, Wendy Ann Peer, Chioma Egekwu, Jinshan Lin, Yuan-Chuan Tai, Angus S. Murphy, Gen Li, Sergey Komarov, Benjamin A. Babst, Gary D. Coleman, Nazrul Islam

المصدر: Journal of Experimental Botany

مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, Physiology, Nitrogen, seasonal nitrogen cycling, Plant Science, Forests, 01 natural sciences, complex mixtures, Trees, Transcriptome, 03 medical and health sciences, fluids and secretions, Annual growth cycle of grapevines, stomatognathic system, Auxin, Botany, Storage protein, Plant Proteins, chemistry.chemical_classification, Nitrogen Radioisotopes, Indoleacetic Acids, Catabolism, AcademicSubjects/SCI01210, fungi, bark storage proteins, food and beverages, nitrogen remobilization, Research Papers, 030104 developmental biology, Populus, chemistry, Shoot, Plant Bark, Dormancy, Phloem, Seasons, Plant Shoots, 010606 plant biology & botany

الوصف: This study establishes a role for poplar bark storage protein catabolism and N remobilization to shoot growth following dormancy, and a regulatory role for auxin in seasonal N remobilization.
Seasonal nitrogen (N) cycling in Populus, involves bark storage proteins (BSPs) that accumulate in bark phloem parenchyma in the autumn and decline when shoot growth resumes in the spring. Little is known about the contribution of BSPs to growth or the signals regulating N remobilization from BSPs. Knockdown of BSP accumulation via RNAi and N sink manipulations were used to understand how BSP storage influences shoot growth. Reduced accumulation of BSPs delayed bud break and reduced shoot growth following dormancy. Further, 13N tracer studies also showed that BSP accumulation is an important factor in N partitioning from senescing leaves to bark. Thus, BSP accumulation has a role in N remobilization during N partitioning both from senescing leaves to bark and from bark to expanding shoots once growth commences following dormancy. The bark transcriptome during BSP catabolism and N remobilization was enriched in genes associated with auxin transport and signaling, and manipulation of the source of auxin or auxin transport revealed a role for auxin in regulating BSP catabolism and N remobilization. Therefore, N remobilization appears to be regulated by auxin produced in expanding buds and shoots that is transported to bark where it regulates protease gene expression and BSP catabolism.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8720f146efadc15d0e1ca971f2f5685Test
https://pubmed.ncbi.nlm.nih.gov/32710786Test

المؤلفون: Céline Masclaux-Daubresse, Sébastien Thomine, Mathieu Pottier, Jean Dumont

المساهمون: Institut des sciences du végétal (ISV), Centre National de la Recherche Scientifique (CNRS), Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Université Paris-Saclay, Institut de Biologie Intégrative de la Cellule (I2BC), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Approches intégratives du Transport Ionique (MINION), Département Biologie Cellulaire (BioCell), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Institut de Biologie Intégrative de la Cellule (I2BC), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay-Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay, Département Biochimie, Biophysique et Biologie Structurale (B3S), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), ANR-16-CE20-0019,ISISTOR,Amélioration du contenu en fer de la graine(2016)

المصدر: Journal of Experimental Botany
Journal of Experimental Botany, 2019, 70 (3), pp.859--869. ⟨10.1093/jxb/ery388⟩
Journal of Experimental Botany, Oxford University Press (OUP), 2019, 70 (3), pp.859--869. ⟨10.1093/jxb/ery388⟩

مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, metal, leaf senescence, Physiology, Iron, [SDV]Life Sciences [q-bio], education, Population, Mutant, Arabidopsis, Chromosomal translocation, Plant Science, 01 natural sciences, iron loading, 03 medical and health sciences, Nutrient, iron recycling, Autophagy, micronutrient, Arabidopsis thaliana, Micronutrients, health care economics and organizations, 57Fe, 2. Zero hunger, Manganese, education.field_of_study, biology, Chemistry, food and beverages, Biological Transport, 15. Life on land, Micronutrient, biology.organism_classification, Research Papers, Cell biology, Zinc, remobilization, premature senescence, 030104 developmental biology, Seeds, Growth and Development, fe-57, 010606 plant biology & botany

الوصف: Autophagy is an essential recycling mechanism making micronutrients available in vegetative organs for subsequent reallocation to seeds
Micronutrient deficiencies affect a large part of the world’s population. These deficiencies are mostly due to the consumption of grains with insufficient content of iron (Fe) or zinc (Zn). Both de novo uptake by roots and recycling from leaves may provide seeds with nutrients. Autophagy, which is a conserved mechanism for nutrient recycling in eukaryotes, was shown to be involved in nitrogen remobilization to seeds. Here, we have investigated the role of this mechanism in micronutrient translocation to seeds. We found that Arabidopsis thaliana plants impaired in autophagy display defects in nutrient remobilization to seeds. In the atg5-1 mutant, which is completely defective in autophagy, the efficiency of Fe translocation from vegetative organs to seeds was severely decreased even when Fe was provided during seed formation. Combining atg5-1 with the sid2 mutation that counteracts premature senescence associated with autophagy deficiency and using 57Fe pulse labeling, we propose a two-step mechanism in which Fe taken up de novo during seed formation is first accumulated in vegetative organs and subsequently remobilized to seeds. Finally, we show that translocation of Zn and manganese (Mn) to seeds is also dependent on autophagy. Fine-tuning autophagy during seed formation opens up new possibilities to improve micronutrient remobilization to seeds.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03013692a7ae22f940869c2f5969c050Test
https://doi.org/10.1093/jxb/ery388Test

المؤلفون: Liliana Avila-Ospina, Céline Masclaux-Daubresse, Kohki Yoshimoto, Michaël Moison

المساهمون: Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, CETIOM (Centre Technique des Oleagineux), Biologie et Amelioration des Plantes, INRA, INRA Package programme, European Project: 264394, Avila-Ospina, Liliana, Moison, Michaël

المصدر: Journal of Experimental Botany
Journal of Experimental Botany, Oxford University Press (OUP), 2014, 65 (14), pp.3799-3811. ⟨10.1093/jxb/eru039⟩
Journal of Experimental Botany 14 (65), 3799-3811. (2014)
Journal of Experimental Botany, 2014, 65 (14), pp.3799-3811. ⟨10.1093/jxb/eru039⟩

مصطلحات موضوعية: 0106 biological sciences, Senescence, proteolysis, Chloroplasts, Nitrogen, Physiology, [SDV]Life Sciences [q-bio], Proteolysis, media_common.quotation_subject, Cell, Flowers, Plant Science, Biology, proteolyse, 01 natural sciences, 03 medical and health sciences, Autophagy, medicine, vesicular trafficking, Organism, 030304 developmental biology, media_common, Plant senescence, Nitrogen remobilization, Rubisco containing bodies, plant cell death, 0303 health sciences, medicine.diagnostic_test, Longevity, Plants, Cell biology, Plant Leaves, medicine.anatomical_structure, Adaptation, 010606 plant biology & botany

الوصف: Large numbers of publications have appeared over the last few years, dealing with the molecular details of the regulation and process of the autophagy machinery in animals, plants, and unicellular eukaryotic organisms. This strong interest is caused by the fact that the autophagic process is involved in the adaptation of organisms to their environment and to stressful conditions, thereby contributing to cell and organism survival and longevity. In plants, as in other eukaryotes, autophagy is associated with longevity as mutants display early and strong leaf senescence symptoms, however, the exact role of autophagy as a pro-survival or pro-death process is unclear. Recently, evidence that autophagy participates in nitrogen remobilization has been provided, but the duality of the role of autophagy in leaf longevity and/or nutrient recycling through cell component catabolism remains. This review aims to give an overview of leaf senescence-associated processes from the physiological point of view and to discuss relationships between nutrient recycling, proteolysis, and autophagy. The dual role of autophagy as a pro-survival or pro-death process is discussed.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0f6cf8dcf0b459fc79d9c0b54f9d1eaTest
https://doi.org/10.1093/jxb/eru039Test

المؤلفون: Kenichi Shibuya, Kazuo Ichimura, Tomoko Niki

المصدر: Journal of Experimental Botany

مصطلحات موضوعية: Senescence, autophagy, pollination, Ethylene, Physiology, ATG8, nutrient remobilization, Flowers, Plant Science, Biology, Genes, Plant, Petunia, chemistry.chemical_compound, Microscopy, Electron, Transmission, Gene Expression Regulation, Plant, Cadaverine, Plant Cells, Botany, ethylene, RNA, Messenger, Plant Proteins, Regulation of gene expression, fungi, Autophagy, senescence, Biological Transport, Ethylenes, Plant cell, biology.organism_classification, Up-Regulation, flower, Cell biology, chemistry, RNA, Plant, Multigene Family, Petal, Mesophyll Cells, Research Paper

الوصف: Autophagy is one of the main mechanisms of degradation and remobilization of macromolecules, and it appears to play an important role in petal senescence. However, little is known about the regulatory mechanisms of autophagy in petal senescence. Autophagic processes were observed by electron microscopy and monodansylcadaverine staining of senescing petals of petunia (Petunia hybrida); autophagy-related gene 8 (ATG8) homologues were isolated from petunia and the regulation of expression was analysed. Nutrient remobilization was also examined during pollination-induced petal senescence. Active autophagic processes were observed in the mesophyll cells of senescing petunia petals. Pollination induced the expression of PhATG8 homologues and was accompanied by an increase in ethylene production. Ethylene inhibitor treatment in pollinated flowers delayed the induction of PhATG8 homologues, and ethylene treatment rapidly upregulated PhATG8 homologues in petunia petals. Dry weight and nitrogen content were decreased in the petals and increased in the ovaries after pollination in detached flowers. These results indicated that pollination induces autophagy and that ethylene is a key regulator of autophagy in petal senescence of petunia. The data also demonstrated the translocation of nutrients from the petals to the ovaries during pollination-induced petal senescence.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ede273f3677ebcabcab646485eed0a9Test
https://doi.org/10.1093/jxb/ers395Test

المؤلفون: Fabien Chardon, Céline Masclaux-Daubresse

المساهمون: Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech

المصدر: Journal of Experimental Botany
Journal of Experimental Botany, Oxford University Press (OUP), 2011, 62 (6), pp.2131-2142. ⟨10.1093/jxb/erq405⟩
Journal of Experimental Botany 6 (62), 2131-2142. (2011)

مصطلحات موضوعية: 0106 biological sciences, leaf senescence, Physiology, trait loci analysis, variabilité génétique, Arabidopsis, Brassica, Biomass, Plant Science, maize, 01 natural sciences, grain protein, nitrogen use efficiency, zea mays, chemistry.chemical_compound, Nitrate, wheat, Arabidopsis thaliana, transformation génétique, GENETIQUE VEGETALE, nitrate uptake, azote, 2. Zero hunger, 0303 health sciences, biology, 15N, food and beverages, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Research Papers, Nitrogen, Isotopes of nitrogen, Botanique, remobilization, Seeds, harvest index, genetic-variation, génotype, Botanics, recombinant inbred lines, maïs, chemistry.chemical_element, (15)N, 03 medical and health sciences, yield, use efficiency, concentration d'azote, Dry weight, graine, 030304 developmental biology, Nitrates, Nitrogen Isotopes, arabidopsis thaliana, Genetic Variation, 15. Life on land, biology.organism_classification, Carbon, Plant Leaves, chemistry, Agronomy, 010606 plant biology & botany

الوصف: Nineteen Arabidopsis accessions grown at low (LOW N) and high (HIGH N) nitrate supplies were labelled using (15)N to trace nitrogen remobilization to the seeds. Effects of genotype and nutrition were examined. Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains. Surprisingly, variations of one-seed dry weight (DW(1S)) and harvest index (HI) were poorly affected by nutrition. Nitrogen harvest index (NHI) was highly correlated with HI and showed that nitrogen use efficiency (NUE) was increased at LOW N. Nitrogen remobilization efficiency (NRE), as (15)N partitioning in seeds ((15)NHI), was also higher at LOW N. The relative specific abundance (RSA) in seeds and whole plants indicated that the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N. Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified. Although NHI and (15)NHI were highly correlated to HI, significant variations in NUE and NRE were identified using normalization to HI. New insights provided in this report are helpful for the comprehension of NUE and NRE concepts in Arabidopsis as well as in crops and especially in Brassica napus.

وصف الملف: application/pdf

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cd7ffce2b60066b869b66a5a74c671aTest
https://doi.org/10.1093/jxb/erq405Test

المؤلفون: Chao Wang, Ren Fang Shen, Chun Quan Zhu, Xiao Fang Zhu, Xiao Ying Dong

المصدر: Journal of Experimental Botany

مصطلحات موضوعية: 0106 biological sciences, 0301 basic medicine, Ethylene, food.ingredient, Pectin, Physiology, translocation, Oryza sativa, Plant Science, Nitric Oxide, 01 natural sciences, NO, No donors, Nitric oxide, 03 medical and health sciences, chemistry.chemical_compound, food, Plant Growth Regulators, Botany, ethylene, medicine, pectin, Chemistry, Cell wall, Transporter gene, food and beverages, Oryza, Phosphorus, Ethylenes, Phosphate, Molecular biology, remobilization, 030104 developmental biology, NIP, Sodium nitroprusside, Research Paper, 010606 plant biology & botany, medicine.drug

الوصف: Ethylene functions downstream of nitric oxide in cell wall phosphorus reutilization in P-deficient rice through controlling pectin biosynthesis and expression of phosphate transporter gene OsPT2.
Nitric oxide (NO) and ethylene are both involved in cell wall phosphorus (P) reutilization in P-deficient rice; however, the crosstalk between them remains unclear. In the present study using P-deficient ‘Nipponbare’ (Nip), root NO accumulation significantly increased after 1 h and reached a maximum at 3 h, while ethylene production significantly increased after 3 h and reached a maximum at 6 h, indicating NO responded more quickly than ethylene. Irrespective of P status, addition of the NO donor sodium nitroprusside (SNP) significantly increased while the NO scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) significantly decreased the production of ethylene, while neither the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) nor the ethylene inhibitor aminoethoxyvinylglycine (AVG) had any influence on NO accumulation, suggesting NO acted upstream of ethylene. Under P-deficient conditions, SNP and ACC alone significantly increased root soluble P content through increasing pectin content, and c-PTIO addition to the ACC treatment still showed the same tendency; however, AVG+SNP treatment had no effect, further indicating that ethylene was the downstream signal affecting pectin content. The expression of the phosphate transporter gene OsPT2 showed the same tendency as the NO–ethylene–pectin pathway. Taken together, we conclude that ethylene functions downstream of NO in cell wall P reutilization in P-deficient rice.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67f1ee3da8d4a89334b0fed54226251eTest
https://doi.org/10.1093/jxb/erw480Test

المؤلفون: Per L. Gregersen, Julien Hollmann, Karin Krupinska

المصدر: Journal of Experimental Botany
Hollmann, J, Gregersen, P L & Krupinska, K 2014, ' Identification of predominant genes involved in regulation and execution of senescence-associated nitrogen remobilization in flag leaves of field grown barley ', Journal of Experimental Botany, vol. 65, no. 14, pp. 3963-3973 . https://doi.org/10.1093/jxb/eru094Test

مصطلحات موضوعية: Senescence, flag leaf, Physiology, Nitrogen, leaf senescence, HvNAC026, Plant Science, Genes, Plant, Real-Time Polymerase Chain Reaction, Transcriptome, Gene Expression Regulation, Plant, Barley, Gene expression, Botany, MYB, Transcription factor, Gene, Oligonucleotide Array Sequence Analysis, Hordeum vulgare L, biology, fungi, nitrogen supply, food and beverages, Hordeum, nitrogen remobilization, biology.organism_classification, Plant Leaves, field experiment, Transcription Factor Gene, Research Paper

الوصف: Summary Barley genes potentially involved in nitrogen remobilization during leaf senescence under field conditions were identified by microarray analyses.
The transcriptomes of senescing flag leaves collected from barley field plots with standard or high nitrogen supply were compared to identify genes specifically associated with nitrogen remobilization during leaf senescence under agronomically relevant conditions. In flag leaves collected in field plots with high nitrogen supply, the decline in chlorophyll content was delayed. By comparing changes in gene expression for the two nitrogen levels, it was possible to discriminate genes related to nitrogen remobilization during senescence and genes involved in other processes associated with the late development of leaves under field conditions. Predominant genes that were more strongly upregulated during senescence of flag leaves from plants with standard nitrogen supply included genes encoding the transcription factor HvNAC026, serine type protease SCPL51, and the autophagy factors APG7 and ATG18F. Elevated expression of these genes in senescing leaves from plants with standard nitrogen supply indicates important roles of the corresponding proteins in nitrogen remobilization. In comparison, the genes upregulated in both flag leaf samples might have roles in general senescence processes associated with late leaf development. Among these genes were the transcription factor genes HvNAC001, HvNAC005, HvNAC013, HvWRKY12 and MYB, genes encoding the papain-like cysteine peptidases HvPAP14 and HvPAP20, as well as a subtilase gene.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6676f01e59f797a1625c9125714a2075Test
https://pubmed.ncbi.nlm.nih.gov/24700620Test

المؤلفون: Céline Masclaux-Daubresse, Valérie Noël, Fabien Chardon

المساهمون: Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Expt Stn, ARVALIS - Institut du végétal [Paris], The Agence Nationale pour la Recherche (ANR) Genoplante ARCOLE [ANR-05-GPLA-032-05]

المصدر: Journal of Experimental Botany
Journal of Experimental Botany, Oxford University Press (OUP), 2012, 63 (9), pp.3401-3412. ⟨10.1093/jxb/err353⟩

مصطلحات موضوعية: 0106 biological sciences, [SDV.SA]Life Sciences [q-bio]/Agricultural sciences, Crops, Agricultural, Physiology, Computer science, QTL, Nitrogen, media_common.quotation_subject, Quantitative Trait Loci, Arabidopsis, Context (language use), Plant Science, PROTEIN-COMPOSITION, 01 natural sciences, Crop, 03 medical and health sciences, INBRED LINES, NITROGEN USE EFFICIENCY, Quality (business), LEAF SENESCENCE, RICE, CYTOSOLIC GLUTAMINE-SYNTHETASE, 030304 developmental biology, media_common, 2. Zero hunger, 0303 health sciences, Food security, biology, Agroforestry, Crop yield, Model plant, GENETIC-VARIATION, BRASSICA-NAPUS, nitrogen remobilization, 15. Life on land, biology.organism_classification, Adaptation, Physiological, Fundamental human needs, nitrogen uptake, 13. Climate action, Biofuel, Seeds, MAIZE, 010606 plant biology & botany

الوصف: There is evidence that crop yields are showing a trend of stagnation in many countries. This review aims to make an inventory of the last decade's crop productions and the associated economic and environmental challenges. Manipulating nitrogen use efficiency in crops appears to be the best way to conciliate global food security, respecting environmental policies, and the need to produce biofuels. In such a context, the specifications of ideal plants for the future are discussed with regards to human needs and taking into account current physiological and genetic knowledge. The approaches undertaken so far to design an ideal crop and to find suitable new germplasms are discussed. The interest in using model plants in agronomic research is illustrated through the recent data provided by studies exploring natural variation in Arabidopsis thaliana. Efficient Arabidopsis ideotypes are proposed and discussed.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b5d1645992f766692ccf693e930879cTest
https://pubmed.ncbi.nlm.nih.gov/22231501Test