Silicon increases salt tolerance by influencing the two-phase growth response to salinity in wheat (Triticum aestivum L.)

• Autorzy: Chen D. , Yin L. , Deng X. , Wang S.
• Języki publikacji: EN

Abstrakty

EN

Salt usually stresses plants in two ways, osmotic stress and ion toxicity. Plant responds to salinity in two distinct phases through time. It is known that silicon (Si) could alleviate salt stress by decreasing the Na⁺ accumulated in the leaf. In order to determine the function of Si in the two-phase growth response (osmotic and ion toxicity) to salinity, we selected the wheat cultivar ‘‘Changwu 134’’ out of 10 wheat cultivars, and confirmed that it responds to salinity in two distinct phases through time. The fresh weight, leaf area, and leaf Na⁺ concentration were measured during 31 days of 120 mM NaCl supplemented with 1 mM Si treatment. The results revealed that the growth of plants under salinity conditions both with and without Si application were in accordance with the two-phase growth model. Si alleviated the salt stress in the both two-phase growth, but the alleviative effects were more pronounced in the osmotic stress phase than ion toxicity phase. These results clearly showed that Si can enhance plant salt tolerance by alleviating the salt-induced osmotic stress.

Słowa kluczowe

EN

silicon; salt tolerance; two-phase growth system; plant response; salinity; osmotic stress; wheat; Triticum aestivum

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2014
• Tom: 36
• Numer: 09
• Opis fizyczny: p.2531-2535,fig.,ref.

Twórcy

autor

Chen D.

• College of Life Sciences, Northwest A and F University, Yangling 712100, Shaanxi, China

autor

Yin L.

• State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A and F University, Xinong Road No.26, Yangling 712100, Shaanxi, China

autor

Deng X.

• College of Life Sciences, Northwest A and F University, Yangling 712100, Shaanxi, China

autor

Wang S.

• State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A and F University, Xinong Road No.26, Yangling 712100, Shaanxi, China

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Identyfikatory

DOI

10.1007/s11738-014-1575-z