文献类型：期刊文献

中文题名：NaCl胁迫对龟背竹生理生化特性的影响

英文题名：Effect of Na Cl Stress on Physiological and Biochemical Characteristics of M.deliciosa Liebm

作者：朱红霞[1];郭晖[1];张家洋[1]

第一作者：朱红霞

机构：[1]新乡学院生命科学技术学院

第一机构：新乡学院生命科学技术学院

年份：2016

卷号：45

期号：9

起止页码：98-101

中文期刊名：河南农业科学

外文期刊名：Journal of Henan Agricultural Sciences

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：新乡市重点科技攻关项目(ZG14035);河南省高等学校重点科研项目(16B180005)

语种：中文

中文关键词：NaCl胁迫;龟背竹;生理生化特性

外文关键词：NaCl stress; M.deliciosa Liebm; physiological and biochemical characteristics;

摘要：以1年生龟背竹(M.deliciosa Liebm)为试验材料,采用盆栽试验研究不同浓度(0、50、100、200、300 mmol/L)Na Cl处理对龟背竹渗透调节物质含量、叶绿素含量和抗氧化酶活性的影响。结果表明:随着Na Cl处理浓度的增加和胁迫时间的延长,龟背竹叶片可溶性糖、可溶性蛋白、脯氨酸含量呈先升高后降低的趋势,且低浓度(≤100 mmol/L)Na Cl处理下,较对照均有所提高,高浓度(≥300 mmol/L)处理时,除胁迫40 d时脯氨酸含量外其余均较对照降低;丙二醛含量的变化趋势与之相反,呈先降低后升高的趋势。龟背竹叶片叶绿素含量随Na Cl处理浓度的增加呈先升高后降低的趋势,短期(20 d)胁迫较长期(40 d)胁迫变化幅度大。超氧化物歧化酶、过氧化物酶、过氧化氢酶3种酶活性随着Na Cl处理浓度的增加和胁迫时间的延长呈先升高后降低的趋势,低浓度和高浓度处理均较对照增加。以上结果说明,龟背竹在低浓度Na Cl胁迫下可通过增加叶片渗透调节物质和诱导活性氧清除系统以减少由于胁迫而带来的代谢失衡对植株的伤害。
A pot experiment was conducted to study the influence of different concentrations（ 0,50,100,200,300 mmol / L） of Na Cl on the osmotic adjustment substances content,chlorophyll content,antioxidant enzyme activity of M. deliciosa Liebm. The results showed that with the Na Cl concentration increasing and salt-stress time extending,contents of soluble sugar,soluble protein and proline presented a tendency of elevating first and then decreasing,which enhanced at lower Na Cl concentrations（ ≤ 100 mmol / L）compared with the control,whereas began to descend under higher Na Cl treatment（ ≥ 300 mmol / L）except proline content at 40 d after stress. The change tendency of malondialdehyde content was opposite,showing a trend from declining to rising. Chlorophyll content was stimulated firstly and then inhibited by the increase of Na Cl concentration,and the variation width under long-salt-stress was less obvious than that under short-salt-stress. With the Na Cl concentration increasing and salt-stress time extending,SOD,POD and CAT activities increased first and then showed downward trend,which were increased compared with the control whether at lower Na Cl concentrations or higher. In conclusion,under the stress of lower Na Cl concentrations（ ≤100 mmol / L） M. deliciosa Liebm could increase osmotic adjustment substances and induce antioxidant defense mechanism to minimize the damage by Na Cl stress.