Leaf structure and ultrastructure changes induced by heat stress and drought during seed filling in field - grown soybean and their relationship with grain yield
Studies focusing on terminal drought combined with heat impacts on plants of agronomic value remain scarce, and even less under fi eld conditions. The objective of this study was to investigate leaf structural and ultrastructural changes induced by heat stress (HS) and drought stress (DS) during see...
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| Formato: | Artículo |
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2021carrera.pdf LINK AL EDITOR |
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| 245 | 1 | |a Leaf structure and ultrastructure changes induced by heat stress and drought during seed filling in field - grown soybean and their relationship with grain yield | |
| 520 | |a Studies focusing on terminal drought combined with heat impacts on plants of agronomic value remain scarce, and even less under fi eld conditions. The objective of this study was to investigate leaf structural and ultrastructural changes induced by heat stress (HS) and drought stress (DS) during seed fi lling and their relationship with physiological variables and yield determination. Two soybean cultivars were grown in field conditions. During seed fi lling four treatments were applied, including a control (without manipulation, at ambient temperature and field capacity), HS (episodes exceeding 32°C for 6 h d-1) during 21-d, DS (20% of fi eld capacity soil water content) during 35-d, and HS×DS. Drought principally reduced leaf area, whereas heat decreased leaf thickness, possible as acclimation strategies, but also irreversible reducing CO2 assimilation sites. Both stresses damaged the outer and inner membranes of chloroplasts, causing swollen chloroplasts and accumulation of plastoglobules, loss of chlorophyll content, and negatively affecting chlorophyll fl uorescence. Thus, the performance and integrity of the photosynthetic machinery were reduced. Through a morpho-functional perspective and a holistic multiscale approach, our results provide evidence of photosynthesis impairment and yield drops under stressful conditions which were associated with structural and ultrastructural (particularly at the level of chloroplasts) modifi cations of leaves. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a EPISODES OF HIGH TEMPERATURES | ||
| 653 | |a LATE REPRODUCTIVE DEVELOPMENT | ||
| 653 | |a LEAF MORPHOANATOMY | ||
| 653 | |a LEAF PHOTOSYNTHESIS PERFORMANCE | ||
| 653 | |a SEED NUMBER AND WEIGHT | ||
| 653 | |a WATER DEFICIT | ||
| 700 | 1 | |a Carrera, Constanza Soledad |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV-CIAP). Córdoba, Argentina.Instituto Nacional de Tecnología Agropecuaria (INTA). Buenos Aires, Argentina |u CONICET. Buenos Aires, Argentina. |9 50262 | |
| 700 | 1 | |a Solís, Stella Maris |u Universidad Nacional del Nordeste. Instituto de Botánica del Nordeste (IBONE, UNNE). Corrientes, Argentina. |u CONICET - Universidad Nacional del Nordeste. Instituto de Botánica del Nordeste (IBONE, UNNE). Corrientes, Argentina. |u Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura. Cátedra de Morfología Vegetal. Corrientes, Argentina. |9 66953 | |
| 700 | 1 | |a Ferrucci, María Silvia |u CONICET. Buenos Aires, Argentina. |u Universidad Nacional del Nordeste. Instituto de Botánica del Nordeste (IBONE, UNNE). Corrientes, Argentina. |u CONICET - Universidad Nacional del Nordeste. Instituto de Botánica del Nordeste (IBONE, UNNE). Corrientes, Argentina. |9 66950 | |
| 700 | 1 | |a Vega, Claudia Rosa Cecilia |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Córdoba. Estación Experimental Agropecuaria Manfredi (EEA Manfredi). Córdoba, Argentina. |9 58112 | |
| 700 | 1 | |a Galati, Beatriz Gloria |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Botánica General. Buenos Aires, Argentina. |9 37472 | |
| 700 | 1 | |a Ergo, Verónica |u Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Cátedra de Fisiología Vegetal. Córdoba, Argentina. |9 74042 | |
| 700 | 1 | |a Andrade, Fernando Héctor |u CONICET. Buenos Aires, Argentina.. |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce (EEA Balcarce). Balcarce, Buenos Aires, Argentina. |9 5927 | |
| 700 | 1 | |a Lascano, Hernán Ramiro |u Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales (IFRGV-CIAP). Córdoba, Argentina.Instituto Nacional de Tecnología Agropecuaria (INTA). Buenos Aires, Argentina. |u CONICET. Buenos Aires, Argentina. |u Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Cátedra de Fisiología Vegetal. Córdoba, Argentina. |9 74043 | |
| 773 | |g Vol.93, no.4 (2021), e20191388, 27 p., il., grafs., tbls. |t Anais Da Academia Brasileira de Ciencias | ||
| 856 | |f 2021carrera |i en internet |q application/pdf |u http://ri.agro.uba.ar/files/download/articulo/2021carrera.pdf |x ARTI202210 | ||
| 856 | |u https://www.scielo.br/j/aabc/ |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||