Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice

The grain protein content (GPC) in rice is low, and more efforts with agronomic and molecular approaches were performed to increase them. However, the rice research focusing on the plant physiological behaviour that modulates the phenomenon of grain protein filling is very scarce. This work contains...

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Autores principales: Puig, María Lucrecia, RodríguezAndrés Alberto, Vidal, Alfonso Andrés, Bezus, Rodolfo, Maiale, Santiago Javier
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Agrarias
Rice
Grain protein content
Flag leaf
Gas exchange
Thermography images
Chlorophyll fluorescence
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/170107
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-170107
record_format dspace
spelling I19-R120-10915-1701072024-09-12T20:05:17Z http://sedici.unlp.edu.ar/handle/10915/170107 Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice Puig, María Lucrecia RodríguezAndrés Alberto Vidal, Alfonso Andrés Bezus, Rodolfo Maiale, Santiago Javier 2021 2024-09-12T17:54:04Z en Ciencias Agrarias Rice Grain protein content Flag leaf Gas exchange Thermography images Chlorophyll fluorescence The grain protein content (GPC) in rice is low, and more efforts with agronomic and molecular approaches were performed to increase them. However, the rice research focusing on the plant physiological behaviour that modulates the phenomenon of grain protein filling is very scarce. This work contains physiological parameters related to photosynthetic activity in the flag leaf in the grain filling period and N partitioning assays of high (Nutriar) and traditional (Camba) GPC cultivars. Results indicated a higher photosynthetic capacity, a better capacity to provide CO2 to the chloroplast and a healthier PSII structure in Camba relative to Nutriar. Chlorophyll fluorescence parameters decreased more steeply over time in the high protein variety, and a strong negative correlation was observed between GPC and PSII structure parameters. N content in the flag leaf at anthesis showed lower values and higher remobilisation during the grain filling period in Nutriar compared to Camba. The results of this work suggested that the inactivation of some PSII structures in higher GPC cultivars is associated with N remobilisation and would contribute to an increase in the free N available to be translocated to the grain. Facultad de Ciencias Agrarias y Forestales Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 457–464
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Rice
Grain protein content
Flag leaf
Gas exchange
Thermography images
Chlorophyll fluorescence
spellingShingle Ciencias Agrarias
Rice
Grain protein content
Flag leaf
Gas exchange
Thermography images
Chlorophyll fluorescence
Puig, María Lucrecia
RodríguezAndrés Alberto
Vidal, Alfonso Andrés
Bezus, Rodolfo
Maiale, Santiago Javier
Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
topic_facet Ciencias Agrarias
Rice
Grain protein content
Flag leaf
Gas exchange
Thermography images
Chlorophyll fluorescence
description The grain protein content (GPC) in rice is low, and more efforts with agronomic and molecular approaches were performed to increase them. However, the rice research focusing on the plant physiological behaviour that modulates the phenomenon of grain protein filling is very scarce. This work contains physiological parameters related to photosynthetic activity in the flag leaf in the grain filling period and N partitioning assays of high (Nutriar) and traditional (Camba) GPC cultivars. Results indicated a higher photosynthetic capacity, a better capacity to provide CO2 to the chloroplast and a healthier PSII structure in Camba relative to Nutriar. Chlorophyll fluorescence parameters decreased more steeply over time in the high protein variety, and a strong negative correlation was observed between GPC and PSII structure parameters. N content in the flag leaf at anthesis showed lower values and higher remobilisation during the grain filling period in Nutriar compared to Camba. The results of this work suggested that the inactivation of some PSII structures in higher GPC cultivars is associated with N remobilisation and would contribute to an increase in the free N available to be translocated to the grain.
format Articulo
Articulo
author Puig, María Lucrecia
RodríguezAndrés Alberto
Vidal, Alfonso Andrés
Bezus, Rodolfo
Maiale, Santiago Javier
author_facet Puig, María Lucrecia
RodríguezAndrés Alberto
Vidal, Alfonso Andrés
Bezus, Rodolfo
Maiale, Santiago Javier
author_sort Puig, María Lucrecia
title Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
title_short Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
title_full Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
title_fullStr Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
title_full_unstemmed Patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
title_sort patterns of physiological parameters and nitrogen partitioning in flag leaf explain differential grain protein content in rice
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/170107
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