Salt acclimation processes in wheat

Janda, Tibor and Darkó, Éva and Shehata, S. and Kovács, Viktória and Pál, Magda and Szalai, Gabriella (2016) Salt acclimation processes in wheat. Plant Physiology and Biochemistry, 101. pp. 68-75. ISSN 0981-9428


Download (187kB) | Preview


Young wheat plants (Triticum aestivum L. cv. Mv Béres) were exposed to 0 or 25 mM NaCl for 11 days (salt acclimation). Thereafter the plants were irrigated with 500 mM NaCl for 5 days (salt stress). Irrigating the plants with a low concentration of NaCl successfully led to a reduction in chlorotic symptoms and in the impairment of the photosynthetic processes when the plants were exposed to subsequent high-dose salt treatment. After exposure to a high concentration of NaCl there was no difference in leaf Na content between the salt-acclimated and non-acclimated plants, indicating that salt acclimation did not significantly modify Na transport to the shoots. While the polyamine level was lower in salt-treated plants than in the control, salt acclimation led to increased osmotic potential in the leaves. Similarly, the activities of certain antioxidant enzymes, namely glutathione reductase, catalase and ascorbate peroxidase, were significantly higher in salt-acclimated plants. The results also suggest that while SOS1, SOS2 or NHX2 do not play a decisive role in the salt acclimation processes in young wheat plants; another stress-related gene, WALI6, may contribute to the success of the salt acclimation processes. The present study suggested that the responses of wheat plants to acclimation with low level of salt and to treatment with high doses of salt may be fundamentally different. © 2016 Elsevier Masson SAS.

Item Type: Article
Uncontrolled Keywords: Triticum aestivum L.; SALINITY; OXIDATIVE STRESS; Gene Expression; ACCLIMATION
Subjects: Q Science / természettudomány > QK Botany / növénytan > QK10 Plant physiology / növényélettan
S Agriculture / mezőgazdaság > SB Plant culture / növénytermesztés
Depositing User: MTMT SWORD
Date Deposited: 19 Jan 2017 15:28
Last Modified: 19 Jan 2017 15:28

Actions (login required)

Edit Item Edit Item