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Saline water irrigation effects on antioxidant defense system and proline accumulation in leaves and roots of field-grown olive.
J Agric Food Chem. 2009 Dec 23; 57(24):11484-90.JA

Abstract

Field-grown olive trees (Olea europaea L. cv. Chemlali) were used over two growing seasons to determine the effects of different saline water irrigation levels on levels of proline and chlorophyll contents and activities of superoxide dismutase (SOD), polyphenol oxidase (PPO), ascorbate peroxidase (APX), and catalase (CAT). The plants were irrigated with fresh water (FW; ECe = 1.2 dS m(-1)) and saline water (SW; ECe = 7.5 dS m(-1)). Leaf water relations (relative water content, water potential), photosynthetic activity, and leaf chlorophyll content decreased under irrigation with saline water. In spring 2005, net photosynthesis of young leaves was 24.5 and 14.9 micromol m(-2) s(-1) in FW- and SW-treated plants, respectively. In old leaves, these rates were 20.2 and 12.2 micromol m(-2) s(-1), respectively. The relative reduction of net photosynthesis in SW-treated plants varied from 39 to 46% and from 39 to 61%, compared to FW-treated plants during the first and second crop seasons, respectively. The relative reduction of leaf chlorophyll (a + b) content under high water salinity level exceeds 50%, compared to FW-treated plants. However, proline content and activities of SOD, CAT, and APX increased under saline water irrigation. The increase of proline content was more important in leaves than in roots. In young leaves, the increment of antioxidant activities in SW-treated plants was 2.67, 3.61, and 1.85 times, respectively, for SOD, APX, and CAT, compared to FW-treated plants. From these results, interaction between antioxidant defense system and proline contents seems to be involved in the salt tolerance mechanisms of Chemlali olive tree.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Ben Ahmed C
Department of Life Sciences, Faculty of Sciences of Sfax, B.P. 1171, Sfax 3000, Tunisia. benahmed.c@gmail.com
Ben Rouina B
No affiliation info available
Sensoy S
No affiliation info available
Boukhriss M
No affiliation info available
Ben Abdullah F
No affiliation info available

MeSH

AgricultureOleaOxidoreductasesPlant LeavesPlant ProteinsPlant RootsProlineSalinity

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19924889

Citation

Ben Ahmed, Chedlia, et al. "Saline Water Irrigation Effects On Antioxidant Defense System and Proline Accumulation in Leaves and Roots of Field-grown Olive." Journal of Agricultural and Food Chemistry, vol. 57, no. 24, 2009, pp. 11484-90.
Ben Ahmed C, Ben Rouina B, Sensoy S, et al. Saline water irrigation effects on antioxidant defense system and proline accumulation in leaves and roots of field-grown olive. J Agric Food Chem. 2009;57(24):11484-90.
Ben Ahmed, C., Ben Rouina, B., Sensoy, S., Boukhriss, M., & Ben Abdullah, F. (2009). Saline water irrigation effects on antioxidant defense system and proline accumulation in leaves and roots of field-grown olive. Journal of Agricultural and Food Chemistry, 57(24), 11484-90. https://doi.org/10.1021/jf901490f
Ben Ahmed C, et al. Saline Water Irrigation Effects On Antioxidant Defense System and Proline Accumulation in Leaves and Roots of Field-grown Olive. J Agric Food Chem. 2009 Dec 23;57(24):11484-90. PubMed PMID: 19924889.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Saline water irrigation effects on antioxidant defense system and proline accumulation in leaves and roots of field-grown olive. AU - Ben Ahmed,Chedlia, AU - Ben Rouina,Bechir, AU - Sensoy,Serhat, AU - Boukhriss,Mekki, AU - Ben Abdullah,Ferjani, PY - 2009/11/21/entrez PY - 2009/11/21/pubmed PY - 2010/3/11/medline SP - 11484 EP - 90 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 57 IS - 24 N2 - Field-grown olive trees (Olea europaea L. cv. Chemlali) were used over two growing seasons to determine the effects of different saline water irrigation levels on levels of proline and chlorophyll contents and activities of superoxide dismutase (SOD), polyphenol oxidase (PPO), ascorbate peroxidase (APX), and catalase (CAT). The plants were irrigated with fresh water (FW; ECe = 1.2 dS m(-1)) and saline water (SW; ECe = 7.5 dS m(-1)). Leaf water relations (relative water content, water potential), photosynthetic activity, and leaf chlorophyll content decreased under irrigation with saline water. In spring 2005, net photosynthesis of young leaves was 24.5 and 14.9 micromol m(-2) s(-1) in FW- and SW-treated plants, respectively. In old leaves, these rates were 20.2 and 12.2 micromol m(-2) s(-1), respectively. The relative reduction of net photosynthesis in SW-treated plants varied from 39 to 46% and from 39 to 61%, compared to FW-treated plants during the first and second crop seasons, respectively. The relative reduction of leaf chlorophyll (a + b) content under high water salinity level exceeds 50%, compared to FW-treated plants. However, proline content and activities of SOD, CAT, and APX increased under saline water irrigation. The increase of proline content was more important in leaves than in roots. In young leaves, the increment of antioxidant activities in SW-treated plants was 2.67, 3.61, and 1.85 times, respectively, for SOD, APX, and CAT, compared to FW-treated plants. From these results, interaction between antioxidant defense system and proline contents seems to be involved in the salt tolerance mechanisms of Chemlali olive tree. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/19924889/Saline_water_irrigation_effects_on_antioxidant_defense_system_and_proline_accumulation_in_leaves_and_roots_of_field_grown_olive_ DB - PRIME DP - Unbound Medicine ER -