Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina
Background and aims: Chenopodium album (exotic) and Ch. hircinum (native) are weeds in different environments in Argentina. They tolerate various stress conditions so may have interesting traits for Ch. quinoa selection. This study aims to investigate the leaf anatomy and physiological photosyntheti...
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Sociedad Argentina de Botánica
2024
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/42881 |
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I10-R325-article-428812024-03-28T23:23:56Z Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina Caracterización fotosintética y anatomía foliar de Chenopodium album y Ch. hircinum (Chenopodiaceae) en un valle de altura del Noroeste Argentino. Buedo, Sebastián E. Mercado, María Inés González, Juan Antonio Anatomía foliar Chenopodium eficiencia del uso del agua respiración Chenopodium leaf anatomy respiration water use efficiency Background and aims: Chenopodium album (exotic) and Ch. hircinum (native) are weeds in different environments in Argentina. They tolerate various stress conditions so may have interesting traits for Ch. quinoa selection. This study aims to investigate the leaf anatomy and physiological photosynthetic behavior of former species to identify desirable traits for the improvement of quinoa.M&M: Leaf morphological and physiological characteristics were evaluated in the targeted species growing spontaneously in a high mountain valley (1,995 m a.s.l.,Tucumán, Argentina).Results: Ch. hircinum exhibited higher net photosynthetic assimilation, stomatal conductance, internal CO2 concentration, nocturnal respiration, and lightcompensation point. Ch. album showed higher concentrations of protective pigments and carotenoids, along with superior carboxylation capacity and intrinsic water use efficiency as well as a leaf blade with smaller isodiametric palisade mesophyll cells, higher percentage of intercellular air spaces and a greater density of bladder cells. These attributes allow Ch. album the capacity to survive in high mountain environments.Conclusions: The attributes observed in both species provide valuable insights for targeted improvements in Ch. quinoa cultivation. Introducción y Objetivo: Chenopodium album (exótica) y Ch. hircinum (nativa) son malezas de distintos ambientes de Argentina tolerando diversos factores de stress y ofreciendo potencial para el mejoramiento de Ch. quinoa a ambientes tropicales. El objetivo de este trabajo es explorar la anatomía foliar y el comportamiento fisiológico fotosintético de ambas especies a fin de identificar características deseables para el mejoramiento de quinoa. M&M: Se evaluaron los rasgos morfológicas y fisiológicas foliares en ambas especies, las cuales crecen espontáneamente en un valle de alta montaña (1.995m s.n.m., Tucumán, Argentina). Resultados: Ch. hircinum exhibió mayor asimilación fotosintética neta, conductancia estomática, concentración interna de CO2, respiración nocturna y punto de compensación lumínica. Ch. album presentó una mayor capacidad de carboxilación, eficiencia intrínseca en el uso del agua, una mayor cantidad de pigmentos protectores y carotenoides y láminas foliares con células del mesófiloen empalizada isodiamétricas más pequeñas, con mayor porcentaje de espacios aéreos intercelulares y mayor densidad de glándulas de sal. Estas características otorgarían a Ch. album la capacidad de sobrevivir en ambientes de alta montaña. Conclusión: Los atributos observados en ambas especies resultan interesantes para el mejoramiento dirigido de la quinoa. Sociedad Argentina de Botánica 2024-03-08 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/42881 10.31055/1851.2372.v59.n1.42881 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 59 No. 1 (2024): March Boletín de la Sociedad Argentina de Botánica; Vol. 59 Núm. 1 (2024): Marzo Boletín de la Sociedad Argentina de Botánica; v. 59 n. 1 (2024): Marzo 1851-2372 0373-580X 10.31055/1851.2372.v59.n1 spa https://revistas.unc.edu.ar/index.php/BSAB/article/view/42881/44717 https://revistas.unc.edu.ar/index.php/BSAB/article/view/42881/44718 Derechos de autor 2024 Sebastian Edgardo Buedo, María I. Mercado, Juan A. González https://creativecommons.org/licenses/by-nc-nd/4.0 |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Español |
| format |
Artículo revista |
| topic |
Anatomía foliar Chenopodium eficiencia del uso del agua respiración Chenopodium leaf anatomy respiration water use efficiency |
| spellingShingle |
Anatomía foliar Chenopodium eficiencia del uso del agua respiración Chenopodium leaf anatomy respiration water use efficiency Buedo, Sebastián E. Mercado, María Inés González, Juan Antonio Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| topic_facet |
Anatomía foliar Chenopodium eficiencia del uso del agua respiración Chenopodium leaf anatomy respiration water use efficiency |
| author |
Buedo, Sebastián E. Mercado, María Inés González, Juan Antonio |
| author_facet |
Buedo, Sebastián E. Mercado, María Inés González, Juan Antonio |
| author_sort |
Buedo, Sebastián E. |
| title |
Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| title_short |
Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| title_full |
Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| title_fullStr |
Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| title_full_unstemmed |
Photosynthetic characterization and leaf anatomy of Chenopodium album and Ch. hircinum (Chenopodiaceae) in a high-altitude valley in Northwestern Argentina |
| title_sort |
photosynthetic characterization and leaf anatomy of chenopodium album and ch. hircinum (chenopodiaceae) in a high-altitude valley in northwestern argentina |
| description |
Background and aims: Chenopodium album (exotic) and Ch. hircinum (native) are weeds in different environments in Argentina. They tolerate various stress conditions so may have interesting traits for Ch. quinoa selection. This study aims to investigate the leaf anatomy and physiological photosynthetic behavior of former species to identify desirable traits for the improvement of quinoa.M&M: Leaf morphological and physiological characteristics were evaluated in the targeted species growing spontaneously in a high mountain valley (1,995 m a.s.l.,Tucumán, Argentina).Results: Ch. hircinum exhibited higher net photosynthetic assimilation, stomatal conductance, internal CO2 concentration, nocturnal respiration, and lightcompensation point. Ch. album showed higher concentrations of protective pigments and carotenoids, along with superior carboxylation capacity and intrinsic water use efficiency as well as a leaf blade with smaller isodiametric palisade mesophyll cells, higher percentage of intercellular air spaces and a greater density of bladder cells. These attributes allow Ch. album the capacity to survive in high mountain environments.Conclusions: The attributes observed in both species provide valuable insights for targeted improvements in Ch. quinoa cultivation. |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2024 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/42881 |
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