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La aplicación de nitrógeno en otoño retrasa la senescencia foliar en manzano (Malus domestica Borkh)
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2012-04)La prolongación de la duración de la vida de las hojas de frutales en otoño es deseable ya que contribuye a mejorar la disponibilidad de reservas para el ciclo siguiente. El objetivo de este trabajo fue evaluar el efecto ... -
Cómo caracterizar la variación en el carácter staygreen de maíz y análisis de posibles ventajas en altas densidades de siembra
(Estación Experimental Agropecuaria General Villegas, INTA, 2021)En maíz, el mejoramiento genético ha estado acompañado de cambios en el manejo, entre los que se destaca un aumento en la densidad de plantas a un ritmo de aproximadamente 1000 pl ha-1 año-1 (Duvick, 2005). Además, los ... -
Estrés y muerte celular programada en leguminosas: efectos de la expresión de supresores de muerte celular
(Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, 2012)En leguminosas, condiciones de estrés aceleran el proceso de senescencia e inducen muerte celular, comprometiendo la asimilación del carbono, la fijación biológica del nitrógeno y en consecuencia el crecimiento y la ... -
Evaluation of different bovine muscles to be applied in freeze-drying for instant meal. Study of physicochemical and senescence parameters
(2015-04)The aim of the present research was to evaluate bovine muscles to be subjected to freeze-drying for an instant meal. Physicochemical and senescence parameters were evaluated. The experimental part was divided into two ... -
Exploring gene networks in two sunflower lines with contrasting leaf senescence phenotype using a system biology approach
(BMC, 2019-10)Background: Leaf senescence is a complex process, controlled by multiple genetic and environmental variables. In sunflower, leaf senescence is triggered abruptly following anthesis thereby limiting the capacity of plants ... -
Genome-wide and comparative phylogenetic analysis of senescence-associated NAC transcription factors in sunflower (Helianthus annuus)
(Springer, 2021-12)Background: Leaf senescence delay impacts positively in grain yield by maintaining the photosynthetic area during the reproductive stage and during grain filling. Therefore a comprehensive understanding of the gene families ... -
Identification and characterization of contrasting sunflower genotypes to early leaf senescence process combining molecular and physiological studies (Helianthus annuus L.)
(2016)Leaf senescence is a complex mechanism ruled by multiple genetic and environmental variables that affect crop yields. It is the last stage in leaf development, is characterized by an active decline in photosynthetic rate, ... -
Identification and expression analysis of NAC transcription factors potentially involved in leaf and petal senescence in Petunia hybrida
(Elsevier, 2019-10)Progression of leaf senescence depends on several families of transcription factors. In Arabidopsis, the NAC family plays crucial roles in the modulation of leaf senescence; however, the mechanisms involved in this ... -
Leaf protein allocation across the canopy and during senescence in earlier and later senescing maize hybrids, and implications for the use of chlorophyll as a proxy of leaf N
(Springer, 2019-09)Leaf chlorophyll (chl) and protein distribution were analyzed throughout grain filling in four modern maize hybrids with contrasting senescence behavior, at three different canopy levels and at low-N (LN, 18 kg N ha−1) and ... -
Leaf senescence and the profile of expanded leaf area in maize (Zea mays L.)
(University of Guelph, 2002-08)Leaf senescence is a major factor affecting light interception and dry matter accumulation during the grain-filling period. Reduced leaf senescence has been associated with maize yield genetic improvement. The objectives ... -
Manipulación de la senescencia de alfalfa (Medicago sativa L.) por ingeniería genética
(Facultad de Agronomía, Universidad de Buenos Aires, 2011-12-12)En plantas forrajeras como la alfalfa, la senescencia foliar produce tanto una pérdida de la biomasa de forraje como una reducción de la calidad del mismo. Una estrategia molecular para retrasar la senescencia mediante la ... -
Melatonin in Arabidopsis thaliana acts as plant growth regulator at low concentrations and preserves seed viability at high concentrations
(2015-09)Since the discovery of melatonin in plants, several roles have been described for different species, organs, and developmental stages. Arabidopsis thaliana, being a model plant species, is adequate to contribute to the ... -
Network and biosignature analysis for the integration of transcriptomic and metabolomic data to characterize leaf senescence process in sunflower
(2016)In recent years, high throughput technologies have led to an increase of datasets from omics disciplines allowing the understanding of the complex regulatory networks associated with biological processes. Leaf senescence ... -
Regulation of Zn and Fe transporters by the GPC1gene during early wheat monocarpic senescence
(2014-12)Background; During wheat senescence, leaf components are degraded in a coordinated manner, releasing amino acids and micronutrients which are subsequently transported to the developing grain. We have previously shown that ... -
Sunflower leaf senescence : a complex genetic process with economic impact on crop production
(2017)Leaf senescence is a complex process controlled by multiple genetic and environmental variables. In different crops, a delay in leaf senescence has an important impact on grain yield trough the maintenance of the photosynthetic ... -
Transcription factors associated with leaf senescence in crops
(MDPI, 2019-10)Leaf senescence is a complex mechanism controlled by multiple genetic and environmental variables. Different crops present a delay in leaf senescence with an important impact on grain yield trough the maintenance of the ...