| Biology and Soil |
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| Ecological and Physiological Analysis of Effect of Different Types of Sodium Salt Treatment on Winter Wheat Resistance to Drought |
| ZHOU Rui-lian1, ZHAO Yan-hong1, ZHAO Ha-lin2, ZHAO Xue-yong2 |
1.College of Life Sciences, Ludong University, Yantai 264025, Shandong, China;
2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
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Abstract The effects of different concentrations of sodium salts（NaCl, Na2CO3, Na2SO4）on resistance of winter wheat (Triticum aestivum) seedlings to drought were studied to analyze physiological mechanism of winter wheat tolerance increase to drought by salt stress treatment. The 7-day-old seedlings grown in pots were irrigated with sodium salt of different concentrations (70 mM, 135 mM, 200 mM, 270 mM）for 8 days, then were treated with drought stress for 12 days and rehydrated for 5 days. Then, the moisture content in the leaves and soil, the activities of catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD), MDA content and proline content were measured in the fresh leaves obtained at the 4th day and 8th day after salt stress, 4th day, 8th day and 12th day after drought stress, and 5th day after rehydration. Results showed that during the drought stress process, the moisture content in the leaves and soil rapidly declined with no salt and lower concentration (70 mM) NaCl, Na2CO3, Na2SO4 treatments, but the moisture content in the leaves and soil declined slowly with treatment of higher salt concentration under drought stress. With drought stress for 6 days, the leaves of winter wheat with no salt treatment became welting and had higher content of MDA and proline and activity of SOD than that with higher salt concentration treatment. But the plants with treatment of higher sodium salt concentration grew very well under drought stress for 12 days, and had lower increase level in the content of MDA and activities of antioxidant enzymes than that with no salt treatment. The proline content in the leaves increased with drought stress, but the increase level decreased with the salt concentration increase. After rehydration for 5 days, there was an increase in leaf relative water content, decrease in the contents of MDA and proline, and activities of antioxidant enzymes in the leaves maintained high level. There were no significant differences in increase of winter wheat resistance to drought between different types of sodium salt treatments. This study indicates that salinity in the soil plays an important role in formation of drought resistance of winter wheat because the solute in the cell can increase solute potential and make winter wheat hold more water, reduce the drought stress on cells, make plant survive longer under drought stress. This study also suggests that determination of optimum salt concentration is the key for the use of salinity water irrigation to hold higher output.
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Received: 01 September 2011
Published: 20 May 2012
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| [1]赵哈林,赵学勇,张铜会,等.恢复生态学[M].北京:科学出版社,2009:421-427.[2]戈良朋,马健,李彦.荒漠盐生植物根际土壤盐分和养分特征[J].生态学报,2007,27(9):3565-3571.[3]廖岩,彭友贵,陈桂珠.植物耐盐机理研究进展[J].生态学报,2007,27(5):2077-2084.[4]Meloni D A,Oliva M A,Martinez C A,et al.Phytosynthesis and activity of superoxide dismutase,perxidase and glutathione reductase in cotton under salt stress[J].Environmental and Experimental Botany,2003,49(1):69-76.[5]Rout N P,Shaw B P.Salt tolerance in aquatic macrophytess:Possible involvement of the antioxidative enzymes[J].Plant Science,2001,160(3):415-423.[6]Boo Y C,Jung J.Water deficit-induced oxidative stress and antioxidative defenses in rice plants[J].Journal of Plant Physiology,1999,155:255-261.[7]Bowler C,Montagu M V,Inze D.Superoxide Dismutase and Stress Tolerance[J].Annual Review of Plant Physiology and Plant Molecular Biology,1992,43:83-116.[8]Greenway H,Munns R.Mechanisms of salt tolerance in nonhalophytes[J].Annual Review of Plant Physiology,1980,31(1):149-165.[9]Hernandez J,Jimenez A,Mullineaux P,et al.Tolerance of pea plants (Pisum sativum L.) to long-term salt stress is associated with induction of antioxidant defences[J].Plant,Cell & Environment,2000,23(8):853-862.[10]张有福,陈拓,费贯清,等.盐度对三种荒漠植物渗透调节物质积累影响的研究[J].中国沙漠,2007,27（5）:787-790.[11]Acar O,Tiirkan I,Ozdemir F.Superoxide dismutase and peroxidase activities in drought sensitive and resistant barley (Hordeum vulgate L.) varieties[J].Acta Physiologiae Plantarum,2001,23(3):351-356.[12]Mutlu S,Atici ,Nalbantoglu B.Effects of salicylic acid and salinity on apoplastic antioxidant enzymes in two wheat cultivars differing in salt tolerance[J].Biologia Plantarum,2009,53(2):334-338.[13]王蕊,孙广玉.干旱对大豆叶片葫芦巴碱含量和渗透调节的影响[J].中国沙漠,2010,30（30):552-555.[14]陈兰周,刘永定,李敦海.盐胁迫对爪哇伪枝藻(Scytonema javanicum)生理生化特性的影响[J].中国沙漠,2003,23(3):285-288.[15]龚吉蕊,张立新,赵爱芬,等.油蒿(Artemisia ordosica)抗旱生理生化特性研究初报[J].中国沙漠,2002,22(4):387-392.[16]周瑞莲,孙国钧,王海鸥.沙生植物渗透调节物对干旱、高温的响应及其在抗逆性中的作用[J].中国沙漠,1999,19(S1):18-22.[17]Qiu N W,Lu Q T,Lu C M.Photosynthesis,photosystem Ⅱ efficiency and the xantophyll cycle in the salt adapted halophyte Atriplex centralasiatica[J].New Phytologist,2003,159(2):479-486.[18]Subbarao G V,Wheeler R M,Levine L H,et al.Glycine betaine accumulation,ionic and water relation of redbeet at contrasting levels of sodium supply[J].Journal of Plant Physiology,2001,158(6):767-776.[19]Pan Y,Wu L J,Yu Z L.Effect of salt and drought stress on antioxidant enzymes activities and SOD isoenzymes of liquorice (Glycyrrhiza uralensis Fisch)[J].Plant Growth Regulation,2006,49(2-3):157-165.[20]Slama I,Ghnaya T,Messedi D,et al.Effect of sodium chloride on the response of the halophyte species Sesuvium portulacastrum grown in mannitol-induced water stress[J].Journal of Plant Research,2007,120(2):291-299.[21]Chen Y P,Jia J F,Wang Y J.Weak microwave can enhance tolerance of wheat seedlings to salt stress[J].Journal of Plant Growth Regulation,2009,28(4):381-385.[22]Sueokand S,Kumari A,Sawhney V.Sheokand,Anita Kumari,Veena Sawhney.Effect of nitric oxide and putrescine on antioxidative responses under NaCl stress in chickpea plants[J].Physiology and Molecular Biology of Plants,2008,14(4):355-362.[23]Gong H J,Chen K M,Zhao Z G,et al.Effects of silicon on defense of wheat against oxidative stress under drought at different developmental stages[J].Biologia Plantarum,2008,52(3):592-596.[24]Allakhvenrdiev S I,Sakamoto A,Nishiyama Y,et al.Ionic and osmotic effects of NaCl-induced inactivation of photosystems Ⅰ and Ⅱ in Synechococcus sp[J].Plant Physiology,2000,123(1):1047-1056.[25]谷艳芳,丁圣彦,李婷婷,等.盐胁迫对冬小麦幼苗干物质分配和生理生态特性的影响[J].生态学报,2009,29(2):840-845. |
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2012, Vol. 32 
