受害马尾松木质素含量及其过氧化物酶活性  

Content variation of Lignin and peroxidase activities from Damaged Pinus massioniana

作　　者：任琴[1] 胡永建[1] 李镇宇[1] 金幼菊[1] 

机构地区：[1]北京林业大学生物科学与技术学院

出　　处：《生态学报》2007年第11期4895-4899,共5页Acta Ecologica Sinica

基　　金：国家自然科学基金重点资助项目(30330490)~~

摘　　要：木质素是植物防御植食性昆虫危害的重要物质。对林间马尾松针叶进行接虫咬食处理后,测定了不同时间内木质素含量、过氧化物酶活性及其同功酶谱带的变化。结果表明:与对照相比,虫害针叶1h木质素含量就略有升高,而系统针叶木质素含量10h才开始升高,24h两种处理的木质素含量及过氧化物酶活性均显著提高;受害后所取时间点内,其差异逐渐加大,这种差异在于表达量不同。F检验的结果显示,虫害及系统针叶木质素含量、过氧化物酶活性及同工酶谱带变化一致,均在24h达到显著差异(P(0.05)。Lignin is an important substance in defense attacks of herbirore in plants. After Pinus massioniana trees were damaged by Dendrolimus punctatus Walker, lignin contents, peroxidase activity and its isoenzyme were analyzed respectively at different times. Results indicated that lignin contents compared damaged leaves （IDL）. Instead of systemic leaves （SL） enhanced reached their maximum after 24hrs. Furthermore, their differences with the control, increased slightly at l h from insect- after 10 hrs. Lignin contents and peroxidase activities gradually enhanced with times, which were reflected in expression quantities. F test showed that lignin content corresponded with peroxidase activity and peroxidase isoenzyme changes in damaged P. massoniana needles and displayed difference significantly in 24h （P 〈 0.05）.

关 键 词：马尾松 木质素含量 过氧化物酶活性 过氧化物酶同功酶 

分 类 号：S763.7[农业科学—森林保护学]