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Interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity of barley (Hordeum vulgare L.).
Plant Biol (Stuttg). 2011 Nov; 13(6):872-80.PB

Abstract

The interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity were investigated in barley (Hordeum vulgare L. cv. Manel). Seedlings were grown hydroponically under low or sufficient phosphorus (P) supply (5 or 180 μmol KH(2) PO(4) plant(-1) week(-1) , respectively), with or without 100 mm NaCl. Phosphorus deficiency or salinity significantly decreased whole plant growth, leaf water content, leaf osmotic potential and gas exchange parameters, with a more marked impact of P stress. The effect of both stresses was not additive since the response of plants to combined salinity and P deficiency was similar to that of plants grown under P deficiency alone. In addition, salt-treated plants exposed to P deficiency showed higher salt tolerance compared to plants grown with sufficient P supply. This was related to plant ability to significantly increase root:shoot DW ratio, root length, K(+)/Na(+) ratio, leaf proline and soluble sugar concentrations and total non-enzymatic antioxidant capacity, together with restricting Na(+) accumulation in the upper leaves. As a whole, our results indicate that under concomitant exposure to both salt and P deficiency, the impact of the latter constraint is pre-dominant.

Authors+Show Affiliations

Laboratory of Extremophile Plants, Center of Biotechnology of Borj-Cedria, University Tunis El Manar, Hammam-Lif, Tunisia. onstalbi_zribi@yahoo.frNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21974779

Citation

Talbi Zribi, O, et al. "Interactive Effects of Salinity and Phosphorus Availability On Growth, Water Relations, Nutritional Status and Photosynthetic Activity of Barley (Hordeum Vulgare L.)." Plant Biology (Stuttgart, Germany), vol. 13, no. 6, 2011, pp. 872-80.
Talbi Zribi O, Abdelly C, Debez A. Interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity of barley (Hordeum vulgare L.). Plant Biol (Stuttg). 2011;13(6):872-80.
Talbi Zribi, O., Abdelly, C., & Debez, A. (2011). Interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity of barley (Hordeum vulgare L.). Plant Biology (Stuttgart, Germany), 13(6), 872-80. https://doi.org/10.1111/j.1438-8677.2011.00450.x
Talbi Zribi O, Abdelly C, Debez A. Interactive Effects of Salinity and Phosphorus Availability On Growth, Water Relations, Nutritional Status and Photosynthetic Activity of Barley (Hordeum Vulgare L.). Plant Biol (Stuttg). 2011;13(6):872-80. PubMed PMID: 21974779.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity of barley (Hordeum vulgare L.). AU - Talbi Zribi,O, AU - Abdelly,C, AU - Debez,A, Y1 - 2011/03/07/ PY - 2011/10/7/entrez PY - 2011/10/7/pubmed PY - 2012/2/9/medline SP - 872 EP - 80 JF - Plant biology (Stuttgart, Germany) JO - Plant Biol (Stuttg) VL - 13 IS - 6 N2 - The interactive effects of salinity and phosphorus availability on growth, water relations, nutritional status and photosynthetic activity were investigated in barley (Hordeum vulgare L. cv. Manel). Seedlings were grown hydroponically under low or sufficient phosphorus (P) supply (5 or 180 μmol KH(2) PO(4) plant(-1) week(-1) , respectively), with or without 100 mm NaCl. Phosphorus deficiency or salinity significantly decreased whole plant growth, leaf water content, leaf osmotic potential and gas exchange parameters, with a more marked impact of P stress. The effect of both stresses was not additive since the response of plants to combined salinity and P deficiency was similar to that of plants grown under P deficiency alone. In addition, salt-treated plants exposed to P deficiency showed higher salt tolerance compared to plants grown with sufficient P supply. This was related to plant ability to significantly increase root:shoot DW ratio, root length, K(+)/Na(+) ratio, leaf proline and soluble sugar concentrations and total non-enzymatic antioxidant capacity, together with restricting Na(+) accumulation in the upper leaves. As a whole, our results indicate that under concomitant exposure to both salt and P deficiency, the impact of the latter constraint is pre-dominant. SN - 1438-8677 UR - https://www.unboundmedicine.com/medline/citation/21974779/Interactive_effects_of_salinity_and_phosphorus_availability_on_growth_water_relations_nutritional_status_and_photosynthetic_activity_of_barley__Hordeum_vulgare_L___ L2 - https://doi.org/10.1111/j.1438-8677.2011.00450.x DB - PRIME DP - Unbound Medicine ER -