|Table of Contents|

Effects of Rhus typhina on the Soil Microbial Community Functional Diversity of the Cosmos bipinnata Rhizosphere

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年21
Page:
64-71
Research Field:
Publishing date:

Info

Title:
Effects of Rhus typhina on the Soil Microbial Community Functional Diversity of the Cosmos bipinnata Rhizosphere
Author(s):
MA Wenyu; YANG Chengxi; GUO Weiqiang; WANG Ying; QU Tongbao
(Horticultural College，Jilin Agricultural University，Changchun,Jilin 130118)
Keywords:
Rhus typhina; Cosmos bipinnatus; Biolog-ECO; carbon source utilization; soil microbial functional diversity
PACS:
-
DOI:
10.11937/bfyy.20191256
Abstract:
The roots of Rhus typhina were used as experimental material and the Cosmos bipinnatus was used as research object.They were selected in the basin to measure plant growth indicators.Then the carbon source utilization characteristics of soil microbial community under C.bipinnatus was detected by Biolog-ECO micro-plate and soil physicochemical properties were measured by conventional methods under different concentrations aqueous extracts of roots.Meanwhile redundancy analysis (RDA) were used to study the main factors affecting the carbon source utilization of soil microorganisms and the mechanism of action.The aim of the present study was to investigate the soil microbial functional diversity of Cosmos bipinnatus rhizosphere and its response to different concentrations root aqueous extract of Rhus typhina，and to explore the allelopathic mechanism of R.typhina to C.bipinnatus.The results showed that C.bipinnatus was the best under TB treatment.There was significant difference in soil pH，total nitrogen content，carbon nitrogen ratio，electrical conductivity and organic carbon content (P<0.05).Under different treatments，the average well color development (AWCD) gradually increased with the increasing culture time，and the maximum value was at 180 hours，and the order of carbon source utilization was as follow：TB，TA，TC，CK，TD.Compared with the CK，other treatments promoted the utilization of amines by soil microorganisms and inhibited the utilization of amino acids and polymers.There were significant differences in Shannon-Wiener diversity index，Pielou uniformity index was not (P<0.05),but Gini diversity index (P>0.05) under different treatments.RDA showed that total nitrogen content and organic carbon content was the main factors affecting the carbon sources utilization of soil microbes.The aqueous extracts of R.typhina roots could further change the functional diversity of soil microbial community by affecting soil physical and chemical properties.Thus it affect the growth of the plant.

References:

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Last Update: 2019-11-26