[1]蒲晓娟,陈 辉,王胜军.秦岭细粘束孢对寄主华山松生理生化代谢的影响[J].西北林学院学报,2008,23(03):109.
 PU Xiaojuan,CHEN Hui,WANG Shengjun.Influences of Leptographium qinglingensis on Metabolism of Pinus armandi[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2008,23(03):109.
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秦岭细粘束孢对寄主华山松生理生化代谢的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第23卷
期数:
2008年03期
页码:
109
栏目:
森林资源与保护
出版日期:
2008-05-30

文章信息/Info

Title:
Influences of Leptographium qinglingensis on Metabolism of Pinus armandi
作者:
蒲晓娟 陈 辉 王胜军
西北农林科技大学 林学院, 陕西 杨陵712100
Author(s):
PU XiaoˉjuanCHEN Hui WANG Shengˉjun
College of Forestry, Northwest A&F University, Yangling, Shaanxi 7 12100, China
关键词:
华山松 韧皮部 华山松大小蠹 共生真菌 秦岭细粘束孢抗性 营养物质
Keywords:
Pinus armandiphloemDendroctonus armandiassociated fungusLe ptographium qinglinˉ gensisresistance nutrients
分类号:
S791.241
文献标志码:
A
摘要:
研究人工接种试验条件下华山松大小蠹共生真菌秦岭细粘束孢对华山松苗木生理 生化代 谢的影响,以揭示秦岭细粘束孢对华山松的危害。结果表明,被感染秦岭细粘束孢的华 山松苗木随 着真菌在韧皮部和木质部组织内的危害和扩展,针叶叶绿素含量不断降低;接种21 d后韧 皮部反 应区内水分、可溶性糖及蛋白质含量显著减少;SOD超氯化物歧化酶、CAT(过氧化氢酶) 酶活性明 显降低,而MDA(丙二醛)含量则有所增加。这说明秦岭细粘束孢的大量侵害可以造成华 山松营 养物质含量和酶活性的降低,在削弱寄主树木抗性的同时加速寄主华山松韧皮部组织内 营养物质 的转化,并为华山松大小蠹在韧皮部内的生存创造营养条件。
Abstract:
Influences of Leptographium qinglingensis,on metabolism of Pin us armandi were investigated by artificial inoculation method to reveal the damage of the fun gus to the trees. The results showed that, with the rapidly invasion and expanding of fungus in xylem and p hloem of infected P. armandi sapling, the content of chlorophyll of pine needle is reduced remarkably21 d ays after inoculation, the water conˉ tent, soluble sugars and protein, the activities SOD and CAT in r eaction zone of phloem was lower in inˉ fected tree than those in healthy ones, but the content of MDA s lightly increased. It was very apparent that the more fungi being inoculated, the lower the content of w ater, soluble sugars and protein, in the host tree indicating that the enzyme activities and the content o f nutrient were significantly decreased by the infection with L. qinglingensis,which weaken the resistance of t he host gradually and accelerated nuˉ trients transformation in tissue of P. armandi,and created nutritiona l conditions for the survival of D. arˉ mandi in phloem.

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备注/Memo

备注/Memo:
收稿日期:2007ˉ06ˉ01 修回日期:2007ˉ00ˉ00 基金项目:国家自然科学基金(304714 01);国家“十一五”科技支撑资助项目(2001BA509B1203)。 作者简介:蒲晓娟(1981ˉ) ,女,陕西渭南人,硕士研究生,研究方向:森林昆虫学。ˇ通讯作者:陈辉(1961ˉ),男 ,甘肃酒泉人,教授,博士生导师,主要从事森林昆虫学研究。Eˉmail:chenhui@nwsuaf.e du.cn
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