高师理科学刊2024，Vol.44Issue(6)：81-86,6.DOI:10.3969/j.issn.1007-9831.2024.006.013
菌株JB18的鉴定及对菊苣幼苗生理指标的影响
Identification of strain JB18 and its effect on physiological indices of chicory
摘要
Abstract
Lead and cadmium pollution seriously jeopardizes plant growth and human health.A strain of Pb-Cdresistant bacterium JB18 was screened and identified by 16SrDNA sequence analysis.The soil was treated with different Pb-Cd composite concentrations and planted with chicory to investigate the effects of JB18 on some physiological indexes of chicory seedlings.Changes in the mass fraction of soluble sugars,soluble proteins,glutathione,and proline were determined in chicory.The results showed that JB18 was identified as a Methylobacterium radiotolerans with a maximum resistance to lead and cadmium concentration of Pb-Cd(200/40)mg·L-1,and was able to hydrolyze starch and utilize maltose.The pot experiment showed that inoculation with JB18 could enhance the mass fraction of soluble sugar,soluble protein,proline and other substances in chicory seedlings,and at the same time,it could promote the synthesis of glutathione,and slow down the adverse effects of lead and cadmium stress on chicory seedlings.关键词
铅/镉/菊苣/耐辐射甲基杆菌Key words
lead/cadmium/chicory/Methylobacterium radiotolerans分类
农业科技引用本文复制引用
苑新悦,刘宇恒,李春月,刘博,刘丽杰,秦祥宇,于保刚,李铁,金忠民..菌株JB18的鉴定及对菊苣幼苗生理指标的影响[J].高师理科学刊,2024,44(6):81-86,6.基金项目
黑龙江省省属高等学校基本科研业务费科研项目(NO.145309523) （NO.145309523）
