桉树内生菌对尾巨桉幼苗抗寒性的影响  

Effects of endophytic fungus in eucalyptus on the cold resistance of the seedling of E.urophylla×E.grandis

作　　者：谢安强[1,2] 洪伟[1,2] 吴承祯[1,2] 封磊[3] 林晗[1,2] 李键[1,2] 范海兰[1,2] 

机构地区：[1]福建农林大学桉树研究中心,福建福州350002 [2]福建省高校森林生态系统过程与经营重点实验室,福建福州350002 [3]福建农林大学资源与环境学院,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2011年第2期138-144,共7页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：教育部博士点学科专项基金资助项目(20093515110006);福建省科技厅重点资助项目(2008N0004)

摘　　要：采用菌液浇施方法对尾巨桉幼苗接种10株桉树内生菌,接种30 d后进行低温胁迫.结果表明,处理1、7、5、6、9、3、2、8的半致死温度分别比对照下降了2.71、2.28、1.98、0.77、0.61、0.61、0.26、0.08℃.植株在低温条件下,处理1、7、10、5、8、2、6、4的POD活性分别比对照提高了35.40%、22.52%、12.11%、12.11%、10.04%、8.23%、4.04%和0.62%;处理1、3、4、5、7、8的SOD活性分别比对照提高了36.39%、6.79%、0.06%、4.97%、12.98%和8.25%;处理5、7、1、4、9的MDA含量分别比对照下降了40.40%、29.08%、28.86%、4.88%和1.78%.表明菌种1可提高桉树的抗寒能力.Ten kinds of endophytie fungus in eucalyptus were inoculated in the seedling of E. urophylla χ E. grandis by applying fun gus liquid, the experiment of low temperature stress was carried thirty days later. The results showed that in comparison with control group the semilethal temperature of treatment group 1,7,5,6,9,3,2 and 8 decreased by 2.71,2.28, 1.98, 0.77, 0.61,0.61,0.26 and 0.08 ℃, respectively; the activities of POD of treatment group 1,7,10,5,8,2,6,4 increased by 35.40%, 22.52%, 12.11%, 12.11%, 10.04%, 8.23 %, 4.04% and 0.62%, respectively; the activities of SOD of treatment group 1,3,4,5,7 and 8 increased by 36.39%, 6.79%, 0.06%, 4.97%, 12.98% and 8.25% respectively; the content of MDA of treatment 5,7,1,4 and 9 de creased by 40.40%, 29.08%, 28.86%, 4.88% and 1.78%, respectively. The results indicated that the cold resistance of euca lyptus increased greatly by inoculating with No. 1 endophytic fungus of eucalyptus.

关 键 词：内生真菌 桉树 半致死温度 过氧化物酶 超氧化物歧化酶 丙二醛 

分 类 号：S718.521.3[农业科学—林学]