Exogenous application of salicylic acid under changing environment: a Review. Environ Exp Bot

Plant Physiology Section, Department of Botany, Aligarh Muslim University, Aligarh 202002, U.P., India
Environmental and Experimental Botany (Impact Factor: 3.36). 03/2010; 68(1):14-25. DOI: 10.1016/j.envexpbot.2009.08.005

ABSTRACT Salicylic acid (SA), an endogenous plant growth regulator has been found to generate a wide range of metabolic and physiological responses in plants thereby affecting their growth and development. In the present review, we have focused on various intrinsic biosynthetic pathways, interplay of SA and MeSA, its long distance transport and signaling. The effect of exogenous application of SA on bio-productivity, growth, photosynthesis, plant water relations, various enzyme activities and its effect on the plants exposed to various biotic and abiotic stresses has also been discussed.

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Available from: Shamsul Hayat, Sep 28, 2015
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    • "This process requires excessive metabolic energy what may negatively affect the level of carbohydrates in plants as well as the synthesis of secondary metabolites such as vitamins, pigments or phenolic compounds. Salicylic acid (SA) is considered a phytohormone-like compound as it is involved in the regulation of plant growth, development and other physiological processes (Fariduddin et al., 2003; Hayat et al., 2010). In horticulture practice, tomato cultivation is widely conducted under cover using hydroponics with or without circulating system. "
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    ABSTRACT: Vegetables with increased content of iodine can become an alternative source of this element in the diet. Iodine is not a plant nutrient. Salicylic acid (SA) is involved in plant adaptation to stress conditions. The aim of the study was to evaluate the influence of iodine and SA on yield and selected parameters of chemical composition of tomato fruits. A three-year study with tomato cultivation in hydroponic system was conducted with the introduction of iodine and SA into nutrient solution: (1) Control, (2) KI, (3) KIO3, (4) KI + SA, (5) KIO3 + SA. Both iodine and SA were applied in a dose of 1 mg dm−3, i.e. 7.88 μM I and 7.24 μM SA, respectively. Fruits of plants treated with KI contained significantly more iodine. SA contributed to a 157% and 37% increase in iodine accumulation in fruits – for KIO3 + SA and KI + SA, respectively. Treatment with KIO3 was the best for nutritional value of tomato fruits.
    Scientia Horticulturae 06/2015; 188:89-96. DOI:10.1016/j.scienta.2015.03.023 · 1.37 Impact Factor
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    • "This may be explained on the basis of the roles of Ca 2+ and SA in signal transduction. SA acts at the level of transcription and/or translation thereby increasing the activity of various enzymes necessary for the growth of plants (Hayat et al., 2010). SA also enhances the accumulation of abscisic acid and indole- 3-acetic acid that improve the protective and growthpromoting effect of SA (Sakhabutdinova et al., 2003). "
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    ABSTRACT: Cadmium, a non-essential and toxic metal, negatively affects plant growth and productivity, and alters the plant's physiological processes necessary for its survival. The present study was designed to explore the individual and combined effects of calcium and salicylic acid (SA) on the morphology and physiology of Brassica juncea L. cv. Varuna under cadmium stress. The application of calcium (2 mM) through the soil and/or SA (10-5 M) as foliar spray enhanced the growth, photosynthetic parameters, and proline content determined after 45 days of treatment. The application of cadmium (6 mg kg-1) through the soil was toxic and decreased both growth and the photosynthetic parameters. The application of calcium and SA in combination was most effective in alleviating the harmful effects of cadmium on growth and photosynthesis. Calcium and SA clearly induced plant protection mechanisms by enhancing proline and chlorophyll accumulation in the leaves.
    Zeitschrift fur Naturforschung C 01/2015; 69(11-12):452-458. DOI:10.5560/ZNC.2014-0036 · 0.55 Impact Factor
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    • "Generally, within 12 h treatment, plants exhibit enhanced tolerance. Longer treatment could reduce this effect, and even harm plants (Hayat et al. 2010; Wang et al. 2011). It is known that SA can interact with CAT and APX to inhibit their activity (Chen et al. 1993; Sajitha Rajan and Murugan 2010). "
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    ABSTRACT: Background and aims In plants, salicylic acid (SA) acting as one of the signaling molecules can regulate and respond to cadmium (Cd) stress. It is well known that hydrogen sulfide (H2S) could alleviate toxicity of Cd stress but the crosstalk between SA and H2S in regulating Cd stress still remains unclear. Methods We studied on it through the physiological and biochemical method together with the microstructure synthesis. Results Our results indicated that the plants exhibited enhanced tolerance to Cd when pretreated with SA, which included weakening oxidative damage and intensifying photosynthesis as well as boosting L-cysteine desulfhydrase (LCD) activity and raising the content of endogenous H2S. In parallel, the plants pretreated with NaHS, a donor of H2S, showed a stronger ability to tolerate Cd stress, SA- pretreated plants presented normal growth and meanwhile the content of chlorophyll and the microstructure of roots were significantly different compared to those treated with Cd only. By contrast, with the same treatments, the positive function and effect of SA on the LCD-knockout mutants, lcd was not observed. Pharmacological experiments further testified these results. Conclusions All of the results suggest that H2S may be a downstream signal molecule in SA-induced Cd tolerance of Arabidopsis.
    Plant and Soil 01/2015; DOI:10.1007/s11104-015-2475-8 · 2.95 Impact Factor
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