|Table of Contents|

Isolation and Identification of Siderophore-producing Rhizobacteria From
Rhizosphere Soil of Caragana spp. and Its Growth-promoting Effects
(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年21
Page:
122-129
Research Field:
Publishing date:

Info

Title:
Isolation and Identification of Siderophore-producing Rhizobacteria From
Rhizosphere Soil of Caragana spp. and Its Growth-promoting Effects
Author(s):
ZHOU Bo; DAI Jinxia
School of Life Science,Ningxia University,Yinchuan,Ningxia 750021
Keywords:
Caragana spp.; siderophore; plant growth-promoting rhizobacteria; growth-promoting effects
PACS:
-
DOI:
10.11937/bfyy.20170697
Abstract:
Rhizobacteria of producing siderophore were isolated from rhizosphere soil of Caragana spp.grown in desert grassland with CAS (chrome azurol S) medium.The diversity of the strains were analysed based on the 16S rDNA sequences.The ability of phosphate dissolving,nitrogen fixation,indoleacetic acid (IAA) and ACC deaminase production were evaluated.The effect on promoting growth of Caragana spp.seedlings were tested by inoculating experiment with strain Fe11.The results showed that total of 14 strains of siderophore-producing were isolated from rhizosphere soil of Caragana spp.,and 6 of them had strong ability to produce siderophore.The 16S rDNA sequences of all strains had 99%-100% similarity with that of Pseudomonas,which was dominant siderophore-producing rhizobacteria of Caragana spp.Most of the strains had more than two kinds of growth-promoting characteristics.Among them,strains Fe9,Fe11 and Fe13 showed a diverse growth-promoting potential.The results of inoculation experiment demonstrated that strain Fe11 had obvious growth-promoting effect on Caragana spp.seedlings.The plant height,root length,leaf number,fresh weight and dry weight were increased by 17.25%,6.68%,17.75%,42.51% and 20.67%,respectively.

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Last Update: 2017-11-14