杨树内生细菌P22、S16对近缘种植物生根和生长的影响  

Effects of Endophytic Bacteria P22 and S16 in Populus on the Rooting and Growth of the Relative Species Plants

作　　者：韩志校[1] 张泽坤[1] 董研[1] 杨敏生[1] Dietrich Ewald 

机构地区：[1]河北农业大学,保定071000 [2]德国联邦林业及林产品研究中心林木遗传育种研究所

出　　处：《东北林业大学学报》2014年第7期117-121,125,共6页Journal of Northeast Forestry University

基　　金：林业公益性行业科研专项经费重大项目(201004004);国家高技术研究发展计划"863"计划(2011AA100201)

摘　　要：以从白杨杂种741杨内生菌中提取得到的菌株P22和S16为研究对象,通过16S rDNA分子检测证明它们分别属于类芽孢杆菌(Paenibacillus sp.)和寡养食单胞菌(Stenotrophomonas sp.)。研究了菌株P22和S16对促进近缘种植物生根及生长的能力。结果表明:菌株P22和S16对三倍体毛白杨组培苗、欧美杨107和旱柳硬枝插条生根和生长促进作用显著。证明这2株菌株为植物促生菌,可能具有固氮和诱导产生植物激素的作用,菌株P22的促进生长能力更加显著。We isolated Paenibacillus （P22） and Stenotrophomonas （S16） from Endophytic bacteria of the hybrid poplar 741. They respectively belonged to Paenibacillus sp. and Stenotrophomonas sp. by 16S rDNA molecular detection. Then, we studied the ability of strains P22 and S16 for promoting rooting and growing on sibling species plants. P22 and S16 remark ably promoted rooting and growing of tissue culture seedlings of Triploid Populus tomentosa and hardwood cuttings of Populuscanademis ＇Neva＇ and Salix matsudana. Two strains were plant growthpromoting bacteria, and they might have the functions of nitrogen fixation and inducing generation of plant hormones. The capacity of promoting growth of P22 was more remarkable.

关 键 词：植物内生细菌 16S RDNA 组培苗 硬枝扦插 生根生长 

分 类 号：S792.112[农业科学—林木遗传育种]