Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation
Stevia rebaudiana is a very widespread plant throughout the world, due to the production of diterpenic steviol glycosides, with high sweetening power, being up to 300 times sweeter than sugar at a concentration of 0.4% (w/v). In the Colombian Caribbean, research has focused on evaluating the adaptat...
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| Format: | Online |
| Language: | eng |
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Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC
2021
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| Online Access: | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/12928 |
| _version_ | 1801706300643475456 |
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| author | Castillejo-Morales, Angela Jarma-Orozco, Alfredo Pompelli, Marcelo F. |
| author_facet | Castillejo-Morales, Angela Jarma-Orozco, Alfredo Pompelli, Marcelo F. |
| author_sort | Castillejo-Morales, Angela |
| collection | OJS |
| description | Stevia rebaudiana is a very widespread plant throughout the world, due to the production of diterpenic steviol glycosides, with high sweetening power, being up to 300 times sweeter than sugar at a concentration of 0.4% (w/v). In the Colombian Caribbean, research has focused on evaluating the adaptation and management of commercial genotypes and experimental lines, however, their behavior against soil salinization is unknown. The objective of this research was to evaluate the response of some physiological and morphological characteristics of two promising genotypes against salt stress. The relationship between gas exchange, chlorophyll a fluorescence, and growth parameters was modulated as a function of the NaCl concentration. Although stomatal conductance and perspiration did not show a response to salt levels, the reduction in net photosynthesis as salinity increased was not associated with stomatal effects, but rather with a drop in the rate of electron transport, which articulates the absorption of light energy and its conversion into photoassimilates. Therefore, it could be inferred that salinity-stressed S. rebaudiana plants are more sensitive to non-stomatal limitation than to stomatal limitation. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-12928 |
| institution | Revista Colombiana de Ciencias Hortícolas |
| language | eng |
| publishDate | 2021 |
| publisher | Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-129282022-03-31T13:57:07Z Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation Características fisiológicas y morfológicas indican que el estrés salino en stevia está basado en limitaciones no estomáticas Castillejo-Morales, Angela Jarma-Orozco, Alfredo Pompelli, Marcelo F. Biomass distribution Disruption between energy input and photosynthesis Gas exchange Salinity Stomatal conductance Plant physiology Producción de biomasa vegetal Equilibrio entre la captura de energía y la fotosíntesis Intercambio de gases Salinidad Conductancia estomática Fisiología vegetal Stevia rebaudiana is a very widespread plant throughout the world, due to the production of diterpenic steviol glycosides, with high sweetening power, being up to 300 times sweeter than sugar at a concentration of 0.4% (w/v). In the Colombian Caribbean, research has focused on evaluating the adaptation and management of commercial genotypes and experimental lines, however, their behavior against soil salinization is unknown. The objective of this research was to evaluate the response of some physiological and morphological characteristics of two promising genotypes against salt stress. The relationship between gas exchange, chlorophyll a fluorescence, and growth parameters was modulated as a function of the NaCl concentration. Although stomatal conductance and perspiration did not show a response to salt levels, the reduction in net photosynthesis as salinity increased was not associated with stomatal effects, but rather with a drop in the rate of electron transport, which articulates the absorption of light energy and its conversion into photoassimilates. Therefore, it could be inferred that salinity-stressed S. rebaudiana plants are more sensitive to non-stomatal limitation than to stomatal limitation. Stevia rebaudiana es una planta extendida en el mundo, debido a la producción de glucósidos diterpénicos (esteviósidos y rebaudiósidos), con alto poder edulcorante, siendo hasta 300 veces más dulce que el azúcar a una concentración del 0,4% (p/v). En el Caribe colombiano la investigación se ha enfocado en evaluar la adaptación y manejo de genotipos comerciales y líneas experimentales, sin embargo, se desconoce su comportamiento frente a la salinización del suelo. El objetivo de esta investigación fue evaluar la respuesta de algunas características fisiológicas y morfológicas de dos genotipos prometedores, frente al estrés salino. La relación entre el intercambio de gases, la fluorescencia de la clorofila a y los parámetros de crecimiento se moduló en función de la concentración de NaCl. Aunque la conductancia estomática y la transpiración no mostraron una respuesta a los niveles de sal, la reducción de la fotosíntesis neta a medida que aumentaba la salinidad no se asoció con efectos estomáticos, sino con una caída en la tasa de transporte de electrones, que articula la absorción de la energía luminosa y su conversión en fotoasimilados. Por lo tanto, se podría inferir que las plantas de S. rebaudiana estresadas por salinidad son más sensibles a la limitación no estomática que a la limitación estomática. Sociedad Colombiana de Ciencias Hortícolas-SCCH and Universidad Pedagógica y Tecnológica de Colombia-UPTC 2021-07-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Text Texto application/pdf https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/12928 10.17584/rcch.2021v15i3.12928 Revista Colombiana de Ciencias Hortícolas; Vol. 15 No. 3 (2021); e12928 Revista Colombiana de Ciencias Hortícolas; Vol. 15 Núm. 3 (2021); e12928 Revista Colombiana de Ciencias Hortícolas; Vol. 15 No 3 (2021); e12928 Revista Colombiana de Ciencias Hortícolas; V. 15 N. 3 (2021); e12928 Revista Colombiana de Ciencias Hortícolas; v. 15 n. 3 (2021); e12928 2422-3719 2011-2173 eng https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/12928/10802 Colombia; Cordoba; Monteria Colombia; Cordoba; Monteria Copyright (c) 2021 Revista Colombiana de Ciencias Hortícolas http://creativecommons.org/licenses/by-nc-sa/4.0 |
| spellingShingle | Biomass distribution Disruption between energy input and photosynthesis Gas exchange Salinity Stomatal conductance Plant physiology Producción de biomasa vegetal Equilibrio entre la captura de energía y la fotosíntesis Intercambio de gases Salinidad Conductancia estomática Fisiología vegetal Castillejo-Morales, Angela Jarma-Orozco, Alfredo Pompelli, Marcelo F. Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title | Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title_alt | Características fisiológicas y morfológicas indican que el estrés salino en stevia está basado en limitaciones no estomáticas |
| title_full | Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title_fullStr | Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title_full_unstemmed | Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title_short | Physiological and morphological features denote that salt stress in Stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| title_sort | physiological and morphological features denote that salt stress in stevia rebaudiana is based on nonstomatic instead of stomatic limitation |
| topic | Biomass distribution Disruption between energy input and photosynthesis Gas exchange Salinity Stomatal conductance Plant physiology Producción de biomasa vegetal Equilibrio entre la captura de energía y la fotosíntesis Intercambio de gases Salinidad Conductancia estomática Fisiología vegetal |
| topic_facet | Biomass distribution Disruption between energy input and photosynthesis Gas exchange Salinity Stomatal conductance Plant physiology Producción de biomasa vegetal Equilibrio entre la captura de energía y la fotosíntesis Intercambio de gases Salinidad Conductancia estomática Fisiología vegetal |
| url | https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/12928 |
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