Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots
Saline, alkaline and mixed saline-alkaline conditions frequently co-occur in soil. In this work, we compared these plant stress sources on the legume Lotus tenuis, regarding their effects on shoot growth and leaf and stem anatomy. In addition, we aimed to gain insight on the plant physiological stat...
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todo:paper_14358603_v16_n6_p1042_Paz2023-10-03T16:15:51Z Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots Paz, R.C. Reinoso, H. Espasandin, F.D. González Antivilo, F.A. Sansberro, P.A. Rocco, R.A. Ruiz, O.A. Menéndez, A.B. Alkalinity Osmotic potential Proline Salinity Shoot anatomy Transpiration alkalinity anatomy inhibition leaf area legume morphology osmoregulation physiological response salinity tolerance shoot growth stomatal conductance xylem Lotus tenuis proline sodium chloride anatomy and histology chemistry drug effects evapotranspiration Lotus metabolism osmotic pressure physiological stress physiology plant epidermis plant leaf plant stem salinity Lotus Osmotic Pressure Plant Epidermis Plant Leaves Plant Stems Plant Transpiration Proline Salinity Sodium Chloride Stress, Physiological Saline, alkaline and mixed saline-alkaline conditions frequently co-occur in soil. In this work, we compared these plant stress sources on the legume Lotus tenuis, regarding their effects on shoot growth and leaf and stem anatomy. In addition, we aimed to gain insight on the plant physiological status of stressed plants. We performed pot experiments with four treatments: control without salt (pH = 5.8; EC = 1.2 dS·m-1) and three stress conditions, saline (100 mm NaCl, pH = 5.8; EC = 11.0 dS·m-1), alkaline (10 mm NaHCO<inf>3</inf>, pH = 8.0, EC = 1.9 dS·m-1) and mixed salt-alkaline (10 mm NaHCO<inf>3</inf> + 100 mm NaCl, pH = 8.0, EC = 11.0 dS·m-1). Neutral and alkaline salts produced a similar level of growth inhibition on L. tenuis shoots, whereas their mixture exacerbated their detrimental effects. Our results showed that none of the analysed morpho-anatomical parameters categorically differentiated one stress from the other. However, NaCl- and NaHCO<inf>3</inf>-derived stress could be discriminated to different extents and/or directions of changes in some of the anatomical traits. For example, alkalinity led to increased stomatal opening, unlike NaCl-treated plants, where a reduction in stomatal aperture was observed. Similarly, plants from the mixed saline-alkaline treatment characteristically lacked palisade mesophyll in their leaves. The stem cross-section and vessel areas, as well as the number of vascular bundles in the sectioned stem were reduced in all treatments. A rise in the number of vessel elements in the xylem was recorded in NaCl-treated plants, but not in those treated exclusively with NaHCO<inf>3.</inf>. © 2014 German Botanical Society and The Royal Botanical Society of the Netherlands. Fil:Menéndez, A.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14358603_v16_n6_p1042_Paz |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Alkalinity Osmotic potential Proline Salinity Shoot anatomy Transpiration alkalinity anatomy inhibition leaf area legume morphology osmoregulation physiological response salinity tolerance shoot growth stomatal conductance xylem Lotus tenuis proline sodium chloride anatomy and histology chemistry drug effects evapotranspiration Lotus metabolism osmotic pressure physiological stress physiology plant epidermis plant leaf plant stem salinity Lotus Osmotic Pressure Plant Epidermis Plant Leaves Plant Stems Plant Transpiration Proline Salinity Sodium Chloride Stress, Physiological |
| spellingShingle |
Alkalinity Osmotic potential Proline Salinity Shoot anatomy Transpiration alkalinity anatomy inhibition leaf area legume morphology osmoregulation physiological response salinity tolerance shoot growth stomatal conductance xylem Lotus tenuis proline sodium chloride anatomy and histology chemistry drug effects evapotranspiration Lotus metabolism osmotic pressure physiological stress physiology plant epidermis plant leaf plant stem salinity Lotus Osmotic Pressure Plant Epidermis Plant Leaves Plant Stems Plant Transpiration Proline Salinity Sodium Chloride Stress, Physiological Paz, R.C. Reinoso, H. Espasandin, F.D. González Antivilo, F.A. Sansberro, P.A. Rocco, R.A. Ruiz, O.A. Menéndez, A.B. Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| topic_facet |
Alkalinity Osmotic potential Proline Salinity Shoot anatomy Transpiration alkalinity anatomy inhibition leaf area legume morphology osmoregulation physiological response salinity tolerance shoot growth stomatal conductance xylem Lotus tenuis proline sodium chloride anatomy and histology chemistry drug effects evapotranspiration Lotus metabolism osmotic pressure physiological stress physiology plant epidermis plant leaf plant stem salinity Lotus Osmotic Pressure Plant Epidermis Plant Leaves Plant Stems Plant Transpiration Proline Salinity Sodium Chloride Stress, Physiological |
| description |
Saline, alkaline and mixed saline-alkaline conditions frequently co-occur in soil. In this work, we compared these plant stress sources on the legume Lotus tenuis, regarding their effects on shoot growth and leaf and stem anatomy. In addition, we aimed to gain insight on the plant physiological status of stressed plants. We performed pot experiments with four treatments: control without salt (pH = 5.8; EC = 1.2 dS·m-1) and three stress conditions, saline (100 mm NaCl, pH = 5.8; EC = 11.0 dS·m-1), alkaline (10 mm NaHCO<inf>3</inf>, pH = 8.0, EC = 1.9 dS·m-1) and mixed salt-alkaline (10 mm NaHCO<inf>3</inf> + 100 mm NaCl, pH = 8.0, EC = 11.0 dS·m-1). Neutral and alkaline salts produced a similar level of growth inhibition on L. tenuis shoots, whereas their mixture exacerbated their detrimental effects. Our results showed that none of the analysed morpho-anatomical parameters categorically differentiated one stress from the other. However, NaCl- and NaHCO<inf>3</inf>-derived stress could be discriminated to different extents and/or directions of changes in some of the anatomical traits. For example, alkalinity led to increased stomatal opening, unlike NaCl-treated plants, where a reduction in stomatal aperture was observed. Similarly, plants from the mixed saline-alkaline treatment characteristically lacked palisade mesophyll in their leaves. The stem cross-section and vessel areas, as well as the number of vascular bundles in the sectioned stem were reduced in all treatments. A rise in the number of vessel elements in the xylem was recorded in NaCl-treated plants, but not in those treated exclusively with NaHCO<inf>3.</inf>. © 2014 German Botanical Society and The Royal Botanical Society of the Netherlands. |
| format |
JOUR |
| author |
Paz, R.C. Reinoso, H. Espasandin, F.D. González Antivilo, F.A. Sansberro, P.A. Rocco, R.A. Ruiz, O.A. Menéndez, A.B. |
| author_facet |
Paz, R.C. Reinoso, H. Espasandin, F.D. González Antivilo, F.A. Sansberro, P.A. Rocco, R.A. Ruiz, O.A. Menéndez, A.B. |
| author_sort |
Paz, R.C. |
| title |
Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| title_short |
Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| title_full |
Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| title_fullStr |
Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| title_full_unstemmed |
Akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in Lotus tenuis shoots |
| title_sort |
akaline, saline and mixed saline-alkaline stresses induce physiological and morpho-anatomical changes in lotus tenuis shoots |
| url |
http://hdl.handle.net/20.500.12110/paper_14358603_v16_n6_p1042_Paz |
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