河南农业大学学报2018，Vol.52Issue(1)：96-103,8.
枣根际解磷细菌解磷特性及影响因素分析
Characteristics and influencing factors of phosphate solubilizing bacteria in jujube rhizosphere
摘要
Abstract
Total 4 of solubilizing strains of phosphate solubilization bacteria were screened from jujube rhizosphere to study the phosphate solubilization mechanism based on the effects of Ph, microbial ac-tivity,phosphatase activity,the type and quantity of organic acid. The results showed that 4 strains of phosphate solubilization bacteria were beneficial to the release of soluble phosphorus in fermentation broth with different media under acidic condition. In the Ca3(PO4)2medium,the soluble phosphorus content of P7 reached 218.68~225.26 mg·L-1at 6 d in acidic and neutral conditions. Under alka-line conditions,the soluble phosphorus content was only 77.57 mg·L-1. In the PVK medium, P7 and P13 had strong ability to hydrolyze organic phosphorus. After inactivation of the strains,they lost ability to dissolve phosphorus but the bacteria itself absorbed parts of the available phosphorus. In the Ca3(PO4)2medium, the activity of acid phosphatase was higher than those of alkaline phosphatase. Nevertheless,the activity of acid phosphatase in PVK medium was lower than those of alkaline phos-phatase. Organic acids could play an important role in the degradation of phosphorus, especially the degradation of inorganic phosphorus. In the Ca3(PO4)2medium, Bacillus sp P3 were affected by or-ganic acids mainly lactic acid,acetic acid,glutaric acid, a few of succinic acid and citric acid. The sensitive of strains to surrounding Ph was totally different.关键词
枣/解磷细菌/磷酸酶/有机酸Key words
jujube/phosphate-solubilizing bacteria/phosphatase/organic acid分类
生物科学引用本文复制引用
郭艺鹏,李静,杨越,曾成,李建贵..枣根际解磷细菌解磷特性及影响因素分析[J].河南农业大学学报,2018,52(1):96-103,8.基金项目
新疆维吾尔自治区重点研发计划项目(2017B01002-01) （2017B01002-01）
