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

Autores
Antonietta, Mariana; Giron, Paula; Costa, María Lorenza; Guiamet, Juan José
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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 high-N (HN, 218 kg N ha−1) fertilization levels. Chl content assessed by SPAD resembled protein content only at LN, with delayed senescing genotypes having more leaf protein content than reference genotypes. Across N levels, relative chl content negatively related to light intensity (r2 = 0.59, P < 0.001), while relative protein content did only for the lowest part of the canopy (r2 = 0.54, P < 0.001), suggesting protein distribution in the canopy could be further improved. Relative Rubisco/LHCII partitioning increased from lower to upper leaves (P < 0.09) and differed among genotypes (P < 0.05) with no link to senescence behavior. Photosynthetic electron transport rates were lower at LN and differed between genotypes (P < 0.05) including those with similar leaf protein contents. Chl and protein contents were related across the entire dataset (r2 = 0.53, P < 0.001) but the slope (b) of this relationship varied widely depending on the leaf position (b = 0.026–0.019), the senescence stage (b = 0.014–0.020), the N level (b = 0.035–0.026) and the hybrid (b = 0.016–0.033). Our results suggest that in modern maize hybrids, leaf N utilization can be further improved and that genotypic together with other sources of variation should be included as specific variables in SPAD-based predictions of leaf N content.
EEA General Villegas
Fil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Giron, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria General Villegas; Argentina
Fil: Costa, María Lorenza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fuente
Acta Physiologiae Plantarum 41 : 150 (September 2019)
Materia
Maíz
Avejentamiento
Nitrógeno
Clorofilas
Hojas
Proteínas
Maize
Senescence
Nitrogen
Chlorophylls
Leaves
Proteins
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/5687
Acceder
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oai_identifier_str oai:localhost:20.500.12123/5687
network_acronym_str INTADig
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network_name_str INTA Digital (INTA)
spelling 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 NAntonietta, MarianaGiron, PaulaCosta, María LorenzaGuiamet, Juan JoséMaízAvejentamientoNitrógenoClorofilasHojasProteínasMaizeSenescenceNitrogenChlorophyllsLeavesProteinsLeaf 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 high-N (HN, 218 kg N ha−1) fertilization levels. Chl content assessed by SPAD resembled protein content only at LN, with delayed senescing genotypes having more leaf protein content than reference genotypes. Across N levels, relative chl content negatively related to light intensity (r2 = 0.59, P < 0.001), while relative protein content did only for the lowest part of the canopy (r2 = 0.54, P < 0.001), suggesting protein distribution in the canopy could be further improved. Relative Rubisco/LHCII partitioning increased from lower to upper leaves (P < 0.09) and differed among genotypes (P < 0.05) with no link to senescence behavior. Photosynthetic electron transport rates were lower at LN and differed between genotypes (P < 0.05) including those with similar leaf protein contents. Chl and protein contents were related across the entire dataset (r2 = 0.53, P < 0.001) but the slope (b) of this relationship varied widely depending on the leaf position (b = 0.026–0.019), the senescence stage (b = 0.014–0.020), the N level (b = 0.035–0.026) and the hybrid (b = 0.016–0.033). Our results suggest that in modern maize hybrids, leaf N utilization can be further improved and that genotypic together with other sources of variation should be included as specific variables in SPAD-based predictions of leaf N content.EEA General VillegasFil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaFil: Giron, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria General Villegas; ArgentinaFil: Costa, María Lorenza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaFil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; ArgentinaSpringer2019-08-26T12:37:28Z2019-08-26T12:37:28Z2019-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://link.springer.com/article/10.1007/s11738-019-2943-5http://hdl.handle.net/20.500.12123/56870137-58811861-1664https://doi.org/10.1007/s11738-019-2943-5Acta Physiologiae Plantarum 41 : 150 (September 2019)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-04T09:48:08Zoai:localhost:20.500.12123/5687instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:48:09.183INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv 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
title 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
spellingShingle 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
Antonietta, Mariana
Maíz
Avejentamiento
Nitrógeno
Clorofilas
Hojas
Proteínas
Maize
Senescence
Nitrogen
Chlorophylls
Leaves
Proteins
title_short 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
title_full 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
title_fullStr 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
title_full_unstemmed 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
title_sort 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
dc.creator.none.fl_str_mv Antonietta, Mariana
Giron, Paula
Costa, María Lorenza
Guiamet, Juan José
author Antonietta, Mariana
author_facet Antonietta, Mariana
Giron, Paula
Costa, María Lorenza
Guiamet, Juan José
author_role author
author2 Giron, Paula
Costa, María Lorenza
Guiamet, Juan José
author2_role author
author
author
dc.subject.none.fl_str_mv Maíz
Avejentamiento
Nitrógeno
Clorofilas
Hojas
Proteínas
Maize
Senescence
Nitrogen
Chlorophylls
Leaves
Proteins
topic Maíz
Avejentamiento
Nitrógeno
Clorofilas
Hojas
Proteínas
Maize
Senescence
Nitrogen
Chlorophylls
Leaves
Proteins
dc.description.none.fl_txt_mv 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 high-N (HN, 218 kg N ha−1) fertilization levels. Chl content assessed by SPAD resembled protein content only at LN, with delayed senescing genotypes having more leaf protein content than reference genotypes. Across N levels, relative chl content negatively related to light intensity (r2 = 0.59, P < 0.001), while relative protein content did only for the lowest part of the canopy (r2 = 0.54, P < 0.001), suggesting protein distribution in the canopy could be further improved. Relative Rubisco/LHCII partitioning increased from lower to upper leaves (P < 0.09) and differed among genotypes (P < 0.05) with no link to senescence behavior. Photosynthetic electron transport rates were lower at LN and differed between genotypes (P < 0.05) including those with similar leaf protein contents. Chl and protein contents were related across the entire dataset (r2 = 0.53, P < 0.001) but the slope (b) of this relationship varied widely depending on the leaf position (b = 0.026–0.019), the senescence stage (b = 0.014–0.020), the N level (b = 0.035–0.026) and the hybrid (b = 0.016–0.033). Our results suggest that in modern maize hybrids, leaf N utilization can be further improved and that genotypic together with other sources of variation should be included as specific variables in SPAD-based predictions of leaf N content.
EEA General Villegas
Fil: Antonietta, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Giron, Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria General Villegas; Argentina
Fil: Costa, María Lorenza. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
Fil: Guiamet, Juan José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Fisiología Vegetal. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Instituto de Fisiología Vegetal; Argentina
description 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 high-N (HN, 218 kg N ha−1) fertilization levels. Chl content assessed by SPAD resembled protein content only at LN, with delayed senescing genotypes having more leaf protein content than reference genotypes. Across N levels, relative chl content negatively related to light intensity (r2 = 0.59, P < 0.001), while relative protein content did only for the lowest part of the canopy (r2 = 0.54, P < 0.001), suggesting protein distribution in the canopy could be further improved. Relative Rubisco/LHCII partitioning increased from lower to upper leaves (P < 0.09) and differed among genotypes (P < 0.05) with no link to senescence behavior. Photosynthetic electron transport rates were lower at LN and differed between genotypes (P < 0.05) including those with similar leaf protein contents. Chl and protein contents were related across the entire dataset (r2 = 0.53, P < 0.001) but the slope (b) of this relationship varied widely depending on the leaf position (b = 0.026–0.019), the senescence stage (b = 0.014–0.020), the N level (b = 0.035–0.026) and the hybrid (b = 0.016–0.033). Our results suggest that in modern maize hybrids, leaf N utilization can be further improved and that genotypic together with other sources of variation should be included as specific variables in SPAD-based predictions of leaf N content.
publishDate 2019
dc.date.none.fl_str_mv 2019-08-26T12:37:28Z
2019-08-26T12:37:28Z
2019-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://link.springer.com/article/10.1007/s11738-019-2943-5
http://hdl.handle.net/20.500.12123/5687
0137-5881
1861-1664
https://doi.org/10.1007/s11738-019-2943-5
url https://link.springer.com/article/10.1007/s11738-019-2943-5
http://hdl.handle.net/20.500.12123/5687
https://doi.org/10.1007/s11738-019-2943-5
identifier_str_mv 0137-5881
1861-1664
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv Acta Physiologiae Plantarum 41 : 150 (September 2019)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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