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枫香根际解有机磷细菌筛选及其促生效应(PDF/HTML)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2020年3期
Page:
95-104
Column:
研究论文
publishdate:
2020-06-05

Article Info:/Info

Title:
Screening of indigenous phosphate?solubilizing bacteria from Liquidambar formosana Hance rhizosphere and its potential applications for improving plant growth
Article ID:
1000-2006(2020)03-0095-10
Author(s):
SONG Juan1 XU Guofang2 ZHAO Xing3 YAO Yao3 YANG Xuexiang3 TANG Ronglin3 CUI Jiawang1 CHEN Fengmao1 REN Jiahong2
(1.Co-Innovation Center of the Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing210037, China; 2.The Department of Biological Science and Technology, Changzhi University, Changzhi046011,China; 3.Forest Farm of Jurong City, Jurong212424, China)
Keywords:
Hance plant growth promoting bacteria plant nutrients phosphate-solubilizing bacteria biofertilizer
Classification number :
S763
DOI:
10.3969/j.issn.1000-2006.201908022
Document Code:
A
Abstract:
Objective Isolate and identify efficient phosphate solubilizing bacteria(PSB) from Liquidambar formosana Hance rhizosphere soil and investigate the application in phosphorus release. Method the PSB strains were graded based on morphological and physiological-biochemical characteristics, microbial identification system (MIDI), BIOLOG analysis and 16S rRNA identification methods. The effect of these PSB strains (JX7,JX18,JX21 and WH10)on plant growth was evaluated by determining the minor and major mineral contents of L. formosana leaves using inductively-coupled plasma atomic emission spectrometry. Result Isolates JX7, JX18, WH10 and JX21 were closely related to Variovorax paradoxus, Bacillus cereus, B. mycoides and B.cereus, respectively. The JX21 showed the highest content of soluble phosphate was (9.35 ± 0.89) mg/L, followed by JX7 [(6.63±0.09) mg/L], WH10[ (6.16 ± 0.12 ) mg/L] and JX18 [(5.32 ± 0.07 ) mg/L], all the maximum phosphate was fermented after 72 h of incubation. Phosphate-solubilizing bacteria (JX7, WH10, JX18 and JX21) selected from L. formosana rhizosphere showed a significantly improvement in shoot height and ground diameter of L. formosana (P < 0.05). As well as, these selected strains promoted L. formosana in taking up mineral elements such as phosphorus, magnesium, calcium and zinc under greenhouse conditions. Conclusion The isolates showed good phosphate-solubilizing activity and had potential for use as biofertilizer agents. Further study is needed to evaluate beneficial traits to develop commercial applications.

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Last Update: 2020-06-11