一株滁菊酚酸降解菌的筛选及其促生能力的研究  

Screening of chrysanthenone-degrading bacteria strain and study on its growth-promoting effect

作　　者：吴瑞 陈雨婷 曹启荣 朱琳 周成 WU Rui;CHEN Yuting;CAO Qirong;ZHU Lin;ZHOU Cheng(College of Resource and Environment,Anhui Science and Technology University,Chuzhou 233100,Anhui;College of Life and Health Sciences,Anhui Science and Technology University,Chuzhou 233100,Anhui;College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjiing 210095,Jiangsu)

机构地区：[1]安徽科技学院资源与环境学院,安徽滁州233100 [2]安徽科技学院生命与健康科学学院,安徽滁州233100 [3]南京农业大学资源与环境科学学院,江苏南京210095

出　　处：《浙江农业科学》2024年第6期1375-1378,共4页Journal of Zhejiang Agricultural Sciences

基　　金：安徽省重点研究与开发计划(202004a06020003);安徽自然科学基金面上项目(2108085MC107);大学生创新创业训练计划(S202110879052,202110879023);安徽省教育厅杰青项目(2023AH020024);安徽省教育厅高校科学研究重点项目(KJ2021A0893);安徽省教育厅高校优秀青年人才支持计划一般项目(gxyq2022053);凤阳县科技计划项目(2023TPY04)。

摘　　要：随着滁菊长期连续种植,土壤中积累了大量的酚酸类化合物,酚酸降解菌可以通过降解土壤中的酚酸类化合物来缓解连作障碍。该研究从滁菊连作土壤中分离了85株酚酸降解菌,通过测定菌株的降解效率及其促生效果,筛选出一株具有滁菊酚酸降解能力的根际促生菌。鉴定结果表明,该菌株为伯克霍尔德氏菌属VA-7,对各类酚酸降解率均在45%以上,且具备固氮、解磷、解钾、产铁载体和产生长素(IAA)的能力。研究结果为缓解滁菊的连作障碍提供新的理论依据。With the prolonged continuous cultivation of Chrysanthemum morifolium(Chuju),a substantial accumulation of phenolic acid compounds has occurred in the soil.Phenolic acid-degrading bacteria can alleviate the obstacles of continuous cropping by degrading these compounds in the soil.In this study,85 strains of phenolic acid-degrading bacteria were isolated from the continuous cropping soil of Chrysanthemum morifolium.By evaluating the degradation efficiency and growth-promoting effects of these strains,a rhizosphere-promoting bacterium with the ability to degrade phenolic acids in Chrysanthemum morifolium was selected.Identification results revealed that the strain belonged to the Burkholderia genus VA-7,exhibiting a degradation rate of over 45%for various phenolic acids.Additionally,the strain demonstrated capabilities for nitrogen fixation,phosphorus solubilization,potassium release,iron carrier production,and indole-3-acetic acid(IAA)synthesis.This study provides a new theoretical basis for alleviating the continuous cropping obstacles of Chrysanthemum morifolium.

关 键 词：连作障碍 酚酸类物质 酚酸降解菌 根际促生菌 

分 类 号：S682.1[农业科学—观赏园艺]