Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize

Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize

Protein quality maize (QPM) combines the protein quality of the opaque-2 (o2) mutant with a vitreous endosperm. These characteristics have allowed breeding programs worldwide to produce QPM genotypes that help alleviate malnutrition of people in developing countries from Africa, Asia and Latin Ameri...

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Autores principales: González-Núñez, David Guillermo, Pineda-Hidalgo, Karen Virginia, Salazar-Salas, Nancy Yareli, López-Valenzuela, José Angel
Formato: Online
Lenguaje:spa
eng
Publicado: Universidad de Sonora 2023
Acceso en línea:https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905
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spelling biotecnia-article-19052023-06-22T17:10:31Z Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize Mecanismos asociados con la modificación del endospermo en maíz de calidad proteínica: Modificación del endospermo en maíz González-Núñez, David Guillermo Pineda-Hidalgo, Karen Virginia Salazar-Salas, Nancy Yareli López-Valenzuela, José Angel Zea mays L. endosperm modification Starch zeins Zea mays L. modificación del endospermo almidón zeínas Protein quality maize (QPM) combines the protein quality of the opaque-2 (o2) mutant with a vitreous endosperm. These characteristics have allowed breeding programs worldwide to produce QPM genotypes that help alleviate malnutrition of people in developing countries from Africa, Asia and Latin America with a cereal-based diet. However, the development of these materials has been inefficient due to the limited knowledge about the molecular basis of the conversion of the soft o2 endosperm into a vitreous phenotype in QPM. This conversion has been associated with an increase in small protein bodies rich in 27 kDa γ-zein, the synthesis of starch with a higher proportion of amylose and short-intermediate amylopectin chain branches that favors the compaction of the starch granules, as well as alterations in the amyloplast envelope that favors the interaction between starch granules and protein bodies. Additional studies about the mechanisms involved in the modification of the endosperm in QPM will contribute to produce materials with good agronomic characteristics and protein quality. El maíz de calidad proteínica (MCP) combina la calidad proteínica de la mutante opaco-2 (o2) con un endospermo vítreo. Estas características han permitido a los programas de mejoramiento alrededor del mundo producir genotipos MCP que ayudan a aliviar la malnutrición de la gente en países en desarrollo de África, Asia y América Latina con una dieta basada en cereales. Sin embargo, el desarrollo de estos materiales ha sido poco eficiente debido al limitado conocimiento acerca de las bases moleculares de la conversión del endospermo suave o2 en un fenotipo vítreo en MCP. Esta conversión se ha asociado con el incremento en cuerpos proteínicos pequeños ricos en γ-zeína de 27 kDa, la síntesis de almidón con una mayor proporción de amilosa y ramificaciones de amilopectina cortas-intermedias que favorece la compactación de los gránulos de almidón, así como alteraciones en la envoltura de los amiloplastos que favorece la interacción entre gránulos de almidón y cuerpos proteínicos. Estudios adicionales sobre los mecanismos involucrados en la modificación del endospermo en MCP contribuirán a producir materiales con buenas características agronómicas y buena calidad proteínica. Universidad de Sonora 2023-04-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer reviewed review articles Arículo de revisión evaluado por pares application/pdf text/html text/xml https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905 10.18633/biotecnia.v25i2.1905 Biotecnia; Vol. 25 No. 2 (2023): May - August; 79 - 89 Biotecnia; Vol. 25 Núm. 2 (2023): Mayo - Agosto; 79 - 89 1665-1456 1665-1456 spa eng https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905/797 https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905/861 https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905/879 Derechos de autor 2023 https://creativecommons.org/licenses/by-nc-sa/4.0
institution Biotecnia
collection OJS
language spa
eng
format Online
author González-Núñez, David Guillermo
Pineda-Hidalgo, Karen Virginia
Salazar-Salas, Nancy Yareli
López-Valenzuela, José Angel
spellingShingle González-Núñez, David Guillermo
Pineda-Hidalgo, Karen Virginia
Salazar-Salas, Nancy Yareli
López-Valenzuela, José Angel
Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
author_facet González-Núñez, David Guillermo
Pineda-Hidalgo, Karen Virginia
Salazar-Salas, Nancy Yareli
López-Valenzuela, José Angel
author_sort González-Núñez, David Guillermo
title Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
title_short Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
title_full Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
title_fullStr Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
title_full_unstemmed Mechanisms associated with endosperm modification in quality protein maize: Endosperm modification in maize
title_sort mechanisms associated with endosperm modification in quality protein maize: endosperm modification in maize
description Protein quality maize (QPM) combines the protein quality of the opaque-2 (o2) mutant with a vitreous endosperm. These characteristics have allowed breeding programs worldwide to produce QPM genotypes that help alleviate malnutrition of people in developing countries from Africa, Asia and Latin America with a cereal-based diet. However, the development of these materials has been inefficient due to the limited knowledge about the molecular basis of the conversion of the soft o2 endosperm into a vitreous phenotype in QPM. This conversion has been associated with an increase in small protein bodies rich in 27 kDa γ-zein, the synthesis of starch with a higher proportion of amylose and short-intermediate amylopectin chain branches that favors the compaction of the starch granules, as well as alterations in the amyloplast envelope that favors the interaction between starch granules and protein bodies. Additional studies about the mechanisms involved in the modification of the endosperm in QPM will contribute to produce materials with good agronomic characteristics and protein quality.
publisher Universidad de Sonora
publishDate 2023
url https://biotecnia.unison.mx/index.php/biotecnia/article/view/1905
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