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Ecotoxicology and environmental safety v.147, 2018년, pp.1010 - 1016   SCI SCIE
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How can salicylic acid and jasmonic acid mitigate salt toxicity in soybean plants?

Farhangi-Abriz, Salar (Corresponding author. ) ; Ghassemi-Golezani, Kazem ;
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    Abstract This research was undertaken to assess the impact of 1mM salicylic acid (SA) and 0.5mM jasmonic acid (JA) on alleviation of oxidative, ionic and osmotic stresses of different levels of salinity (0, 4, 7, 10 dS m −1 NaCl, respectively). Salinity increased the contents of glycine betaine, proline, soluble sugars, proteins and the activities of peroxidase, catalase, superoxide dismutase, ascorbate peroxidase, and the amount of malondialdehyde and sodium ion of soybean leaves, but decreased the leaf water content, membrane stability index, potassium and calcium ions, chlorophylls content, chlorophyll stability index, plant biomass and seed yield. Foliar spray of JA reduced Na + entry to the cells, while enhancing the glycine betaine and soluble proteins content, antioxidant enzymes activity, membrane stability index and leaf water content. This treatment had no effect on potassium and the calcium ions content, chlorophyll contents, chlorophyll stability index, soluble sugars, plant biomass and seed yield. In contrast, SA enriched the leaf cells with potassium and calcium ions under different levels of salt stress and increased glycine betaine, soluble sugars, proteins, antioxidant enzymes, leaf water content, membrane stability index, chlorophyll content and chlorophyll stability index, but reduced proline content. These superiorities of SA treatment led to considerable improvement in plant biomass (10%) and seed yield (17%) of soybean. Highlights Salt stress enhanced oxidative, osmotic and ionic stresses in soybean plants. Chlorophyll content and plant performance reduced under salt stress. Hormonal treatments mitigated oxidative, osmotic and ionic stresses. JA did not improve general performance of soybean plants. SA reduced salt stress injuries via enhancing antioxidant enzymes activities. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Jasmonic acid .   Oxidative stress .   Salicylic acid .   Salt toxicity .   Soybean.  

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