外源NO对盐胁迫下新疆杨生理特性的影响  

Effect of exogenous NO on physiological traits of Populus alba var pyramidalis Bge.under salt stress

作　　者：曹芳 Cao Fang(Jinshatan Forest Farm, Sangganhe Poplar High Yield Forest Experimental Bureau, Shanxi Province, Huairen 038302, China)

机构地区：[1]山西省桑干河杨树丰产林实验局金沙滩林场,山西怀仁038302

出　　处：《江苏林业科技》2020年第6期19-22,27,共5页Journal of Jiangsu Forestry Science & Technology

摘　　要：试验以3年生新疆杨为试验材料,在NaCl浓度为600 mmol/L条件下,研究了不同浓度的NO供体外源硝普钠(40,100,160μmol/L)处理对盐胁迫下新疆杨MDA含量,SOD,POD,CAT活性的影响。结果表明:600 mmol/L盐胁迫会提高新疆杨叶片内MDA含量,而100μmol/L的外源硝普钠处理与盐胁迫处理相比显著降低了MDA含量;盐胁迫条件下新疆杨叶片内SOD,POD,CAT活性升高,100μmol/L的外源硝普钠处理较盐胁迫处理显著提高了3种抗氧化酶活性。综合分析认为,100μmol/L的外源硝普钠具有缓解新疆杨盐胁迫伤害的作用。In this paper,the three-year-old cutting plants of Populus alba var pyramidalis Bge.were used as experimental material,and under 600 mmol/L salt stress,MDA content,SOD,POD and CAT activities in leaves were studied with different exogenous NO concentration(40,100,160μmol/L SNP addition).The results showed that the MDA content was increased under salt stress,but exogenous 100μmol/L SNP addition could make MDA content decrease significantly.And the activities of SOD,POD and CAT increased by salt stress,were still significantly increased with 100μmol/L exogenous SNP addition.Comprehensive analysis showed that 100μmol/L exogenous SNP addition could alleviate salt stress injury of P.alba var pyramidalis Bge.

关 键 词：硝普钠 一氧化氮 盐胁迫 新疆杨 生理特性 

分 类 号：Q945.78[生物学—植物学] Q946.885.9