Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G.
Prosopis alba G. is a species of high forest importance in the phytogeographical region of Western Chaco. Although P. alba has been considered as salinity tolerant, its salinity thresholds for germination and seedling growth are unknown, as well as the physiological mechanisms involved in them. The...
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Facultad de Ciencias Agrarias-UNCuyo
2019
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2338 |
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I11-R107article-23382019-12-18T16:14:28Z Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. Meloni, Diego Ariel Gulotta, Marta Rosalía Silva, Diolina Moura Arraiza, María Paz Germinación crecimiento de plántulas ajuste osmótico fluorescencia de la clorofila Germination seedling growth osmotic adjustment chlorophyll fluorescence Prosopis alba G. is a species of high forest importance in the phytogeographical region of Western Chaco. Although P. alba has been considered as salinity tolerant, its salinity thresholds for germination and seedling growth are unknown, as well as the physiological mechanisms involved in them. The aim of this study was to elucidate the mechanisms of tolerance of P. alba to salt stress. Seed germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence were- analyzed. Germination was more tolerant to salinity than seedling growth, with thresholds of 600 mM and 500 mM, respectively. The species showed a high capability of osmotic adjustment, with values near to those observed in halophytes. The photochemical phase of photosynthesis was highly tolerant to saline stress, showing photoinhibition from 400 mM NaCl, as indicated by the fluorescence variables of chlorophyll. This behavior was associated to an increase in anthocyanin concentrations in the leaves. Prosopis alba G. is a species of high forest importance in the phytogeographical region of Western Chaco. Although P. alba has been considered as salinity tolerant, its salinity thresholds for germination and seedling growth are unknown, as well as the physiological mechanisms involved in them. The aim of this study was to elucidate the mechanisms of tolerance of P. alba to salt stress. Seed germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence were- analyzed. Germination was more tolerant to salinity than seedling growth, with thresholds of 600 mM and 500 mM, respectively. The species showed a high capability of osmotic adjustment, with values near to those observed in halophytes. The photochemical phase of photosynthesis was highly tolerant to saline stress, showing photoinhibition from 400 mM NaCl, as indicated by the fluorescence variables of chlorophyll. This behavior was associated to an increase in anthocyanin concentrations in the leaves. Facultad de Ciencias Agrarias-UNCuyo 2019-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2338 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 51 No. 1 (2019): January-June; 69-78 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 51 Núm. 1 (2019): Enero-Junio; 69-78 1853-8665 0370-4661 eng https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2338/1713 https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2338/1714 |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
| institution_str |
I-11 |
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R-107 |
| language |
eng |
| format |
Online |
| author |
Meloni, Diego Ariel Gulotta, Marta Rosalía Silva, Diolina Moura Arraiza, María Paz |
| spellingShingle |
Meloni, Diego Ariel Gulotta, Marta Rosalía Silva, Diolina Moura Arraiza, María Paz Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. Germinación crecimiento de plántulas ajuste osmótico fluorescencia de la clorofila Germination seedling growth osmotic adjustment chlorophyll fluorescence |
| author_facet |
Meloni, Diego Ariel Gulotta, Marta Rosalía Silva, Diolina Moura Arraiza, María Paz |
| author_sort |
Meloni, Diego Ariel |
| title |
Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. |
| title_short |
Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. |
| title_full |
Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. |
| title_fullStr |
Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. |
| title_full_unstemmed |
Effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in Prosopis alba G. |
| title_sort |
effects of salt stress on germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence in prosopis alba g. |
| description |
Prosopis alba G. is a species of high forest importance in the phytogeographical region of Western Chaco. Although P. alba has been considered as salinity tolerant, its salinity thresholds for germination and seedling growth are unknown, as well as the physiological mechanisms involved in them. The aim of this study was to elucidate the mechanisms of tolerance of P. alba to salt stress. Seed germination, seedling growth, osmotic adjustment, and chlorophyll fluorescence were- analyzed. Germination was more tolerant to salinity than seedling growth, with thresholds of 600 mM and 500 mM, respectively. The species showed a high capability of osmotic adjustment, with values near to those observed in halophytes. The photochemical phase of photosynthesis was highly tolerant to saline stress, showing photoinhibition from 400 mM NaCl, as indicated by the fluorescence variables of chlorophyll. This behavior was associated to an increase in anthocyanin concentrations in the leaves. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2019 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/2338 |
| topic |
Germinación crecimiento de plántulas ajuste osmótico fluorescencia de la clorofila Germination seedling growth osmotic adjustment chlorophyll fluorescence |
| topic_facet |
Germinación crecimiento de plántulas ajuste osmótico fluorescencia de la clorofila Germination seedling growth osmotic adjustment chlorophyll fluorescence |
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