Salicylic acid induced physiological and biochemical changes in wheat seedlings under water stress

被引:0
作者
Bhupinder Singh
K. Usha
机构
[1] Institute,Indian Agricultural Research
[2] Nuclear Research Laboratory,undefined
[3] Indian Agricultural Research Institute,undefined
[4] Division of Fruits and Horticultural Technology,undefined
来源
Plant Growth Regulation | 2003年 / 39卷
关键词
Nitrate reductase; Ribulose-1,5-bisphosphate carboxylase/oxygenase; Salicylic acid; Superoxide dismutase; L.;
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中图分类号
学科分类号
摘要
Salicylic acid (SA) is an important signal molecule modulating plantresponses to stress. It is recently reported to induce multiple stresstolerancein plants including drought. An experiment was, therefore, conducted toascertain the effect of salicylic acid on the growth and metabolic profile ofwheat seedlings under water stress. Irrespective of the SA concentration(1–3 mM) and water stress, SA treated plants showed, ingeneral, a higher moisture content, dry mass, carboxylase activity of Rubisco,superoxide dismutase (SOD) activity and total chlorophyll compared to those ofuntreated seedlings. SA treatment, under water stress, protected nitratereductase (NR) activity and maintained, especially at 3 mM SAconcentration, the protein and nitrogen content of leaves compared to watersufficient seedlings. Results signify the role of SA in regulating the droughtresponse of plants and suggest that SA could be used as a potential growthregulator, for improving plant growth under water stress.
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页码:137 / 141
页数:4
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共 46 条
[1]  
Badshah N.(1998)Postharvest application of salicylic acid to onion bulbs for sprout inhibition Sarhad-J.-Agric. (Pakistan) 14 541-547
[2]  
Ali I.(1993)Effects of salicyclic acid on plant water relationship J. Chem. Ecol. 19 237-247
[3]  
Mati ur R.(1971)Superoxide dismutase: Improved assays and assay for acrylamide gels Ann. Biochem. 44 276-278
[4]  
Barkosky R.R.(1987)Possibilities to stimulate germination of thermally treated wheat and maize seeds Cercetari Agronomice in Moldova 4 49-55
[5]  
Einhellig F.A.(1973)Enzyme activities associated with carbon dioxide exchange in illuminated leaves of Ann. Bot. 37 831-844
[6]  
Beauchamp C.(1995)L. I. Effect of light period, leaf age and position on carbon dioxide compensation point Proc. Nat. Acad. Sci. USA 92 5930-5934
[7]  
Fridovich I.(1979)Developmentally related responses of maize catalase genes to salicylic acid Cans. J. Bot. 57 1332-1334
[8]  
Cristea M.(1991)A method for the extraction of chlorophyll from leaf tissue without maceration J. Chem. Ecol. 17 865-886
[9]  
Drochioue G.(1971)Effect of exogenously applied ferulic acid a potential allelopathic compound on leaf growth water utilisation and endogenous abscisic acid levels of tomato, cucumber and bean Plant Physiol. 48 580-590
[10]  
Fair P.(1951)Generation of reduced nicotinamide adenine dinucleotide for nitrate reduction in green leaves J. Biol. Chem. 193 265-275