Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage

ABSTRACT Drought is one of the most limiting factors in agricultural production worldwide. The aim of this work was to evaluate the per se response to drought stress of three maize (Zea mays L.) semi-inbred lines (CHIH, COAH, and ARZM) during the anthesis and grain filling stages. These semi-inbred...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Salgado-Aguilar,Martha, Molnar,Terrence, Pons-Hernández,José L., Covarrubias-Prieto,Jorge, Ramírez-Pimentel,Juan G., Raya-Pérez,Juan C., Hearne,Sarah, Iturriaga,Gabriel
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2020
Materias:	Drought glycine betaine maize proline trehalose trehalose-6-phosphate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200241
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-58392020000200241
record_format	dspace
spelling	oai:scielo:S0718-583920200002002412020-11-30Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stageSalgado-Aguilar,MarthaMolnar,TerrencePons-Hernández,José L.Covarrubias-Prieto,JorgeRamírez-Pimentel,Juan G.Raya-Pérez,Juan C.Hearne,SarahIturriaga,Gabriel Drought glycine betaine maize proline trehalose trehalose-6-phosphate ABSTRACT Drought is one of the most limiting factors in agricultural production worldwide. The aim of this work was to evaluate the per se response to drought stress of three maize (Zea mays L.) semi-inbred lines (CHIH, COAH, and ARZM) during the anthesis and grain filling stages. These semi-inbred lines (BC1S1) are S1 offspring of crosses between drought-tolerant maize and a high-yield line bred by the Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT). Materials were evaluated during a 15-d controlled drought and post-drought irrigation reestablishment period. The photosynthetic rate decreased by 50% in CHIH during drought and it recovered after stress was removed. Proline levels increased 2.3 times in COAH during stress and nonsignificant increases were observed in ARZM or CHIH. However, glycine betaine accumulated at 1061-1133 ng mg-1 fresh weight (FW) before stress, but decreased to 879-1000 ng mg-1 FW during drought stress. The trehalose concentration increased 1.8 times in ARZM (5.60 ng mg-1 FW) under drought stress and remained at similar levels in CHIH (6.48 ng mg-1 FW) and COAH (8.63 ng mg-1 FW) before and during drought stress. In contrast, trehalose-6-phosphate decreased 33% to 38% under drought stress in all three BC1S1 entries and recovered its initial levels after irrigation. Grain biomass loss under drought stress was 54% for ARZM, 48.2% for COAH, and only 26.5% for CHIH. These results showed that CHIH, COAH, and ARZM are drought-tolerant and suggest that osmoprotectant accumulation might play a key role in their physiological performance and grain biomass trait.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.80 n.2 20202020-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200241en10.4067/S0718-58392020000200241
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Drought glycine betaine maize proline trehalose trehalose-6-phosphate
spellingShingle	Drought glycine betaine maize proline trehalose trehalose-6-phosphate Salgado-Aguilar,Martha Molnar,Terrence Pons-Hernández,José L. Covarrubias-Prieto,Jorge Ramírez-Pimentel,Juan G. Raya-Pérez,Juan C. Hearne,Sarah Iturriaga,Gabriel Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
description	ABSTRACT Drought is one of the most limiting factors in agricultural production worldwide. The aim of this work was to evaluate the per se response to drought stress of three maize (Zea mays L.) semi-inbred lines (CHIH, COAH, and ARZM) during the anthesis and grain filling stages. These semi-inbred lines (BC1S1) are S1 offspring of crosses between drought-tolerant maize and a high-yield line bred by the Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT). Materials were evaluated during a 15-d controlled drought and post-drought irrigation reestablishment period. The photosynthetic rate decreased by 50% in CHIH during drought and it recovered after stress was removed. Proline levels increased 2.3 times in COAH during stress and nonsignificant increases were observed in ARZM or CHIH. However, glycine betaine accumulated at 1061-1133 ng mg-1 fresh weight (FW) before stress, but decreased to 879-1000 ng mg-1 FW during drought stress. The trehalose concentration increased 1.8 times in ARZM (5.60 ng mg-1 FW) under drought stress and remained at similar levels in CHIH (6.48 ng mg-1 FW) and COAH (8.63 ng mg-1 FW) before and during drought stress. In contrast, trehalose-6-phosphate decreased 33% to 38% under drought stress in all three BC1S1 entries and recovered its initial levels after irrigation. Grain biomass loss under drought stress was 54% for ARZM, 48.2% for COAH, and only 26.5% for CHIH. These results showed that CHIH, COAH, and ARZM are drought-tolerant and suggest that osmoprotectant accumulation might play a key role in their physiological performance and grain biomass trait.
author	Salgado-Aguilar,Martha Molnar,Terrence Pons-Hernández,José L. Covarrubias-Prieto,Jorge Ramírez-Pimentel,Juan G. Raya-Pérez,Juan C. Hearne,Sarah Iturriaga,Gabriel
author_facet	Salgado-Aguilar,Martha Molnar,Terrence Pons-Hernández,José L. Covarrubias-Prieto,Jorge Ramírez-Pimentel,Juan G. Raya-Pérez,Juan C. Hearne,Sarah Iturriaga,Gabriel
author_sort	Salgado-Aguilar,Martha
title	Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
title_short	Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
title_full	Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
title_fullStr	Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
title_full_unstemmed	Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
title_sort	physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200241
work_keys_str_mv	AT salgadoaguilarmartha physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT molnarterrence physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT ponshernandezjosel physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT covarrubiasprietojorge physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT ramirezpimenteljuang physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT rayaperezjuanc physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT hearnesarah physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage AT iturriagagabriel physiologicalandbiochemicalanalysesofnoveldroughttolerantmaizelinesrevealosmoprotectantaccumulationatsilkingstage
_version_	1714205399166484480

Physiological and biochemical analyses of novel drought-tolerant maize lines reveal osmoprotectant accumulation at silking stage

Ejemplares similares