12株植物根际促生菌促生功能稳定性评价及鉴定

Stability evaluation of growth promoting functionand identification of 12 PGPR strains

摘要:

对12株植物根际促生菌(PGPR)进行促生功能(固氮、溶磷、分泌IAA)稳定性评价,选取促生功能稳定性良好的PGPR菌株,结合菌株形态学特征、主要生理生化特性以及分子特性进行鉴定。结果表明:Jm92、W5、PCRP-5、G、pwxp8、Lx191与Jx59共7株菌促生功能稳定性较好,可应用于后续微生物菌剂的开发; 7株菌有1株属于短波单胞菌属(Brevunmdimonas),2株属于芽孢杆菌属(Bacillus),4株属于假单胞菌属(Pseudomonas)。

Abstract:

The functional stability (nitrogen fixation ability,phosphorus dissolving ability,IAA secreting ability) of 12 PGPR strains were evaluated.The strains with better functional stability were selected to identify in terms of morphological characteristics,main physiological and biochemical characteristics and molecular characteristics.The results showed that Jm92,W5,PCRP-5,G,pwxp8,Lx191 and Jx59 had better functional stability and could be applied to the further development of microbial agents.After identification,one strain was from Brevunmdimonas,two were from Bacillus and four were from Pseudomonas.