Rhizosphere effects on soil bacterial abundance and diversity in the Yellow River Deltaic ecosystem as influenced by petroleum contamination and soil salinization

Ming Nie, Xiao-dong Zhang, Jin-qing Wang, Li-fen Jiang, Ji Yang, Zhe-xue Quan, Xin-hong Cui, Chang-ming Fang, Bo Li*

*Corresponding author for this work

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

In this study, we compared the differences of bacterial abundance and diversity between rhizosphere and surrounding bulk soils under soil salinization and petroleum contamination in the Yellow River Delta on a 110-km-distance scale. In comparison with bulk soils, rhizosphere soils were mainly characterized by lower-salinity and higher water content in saline soils. For bacterial abundance, the numbers of total bacteria and hydrocarbon degraders were significantly higher in rhizosphere soils than those in bulk soils. Although there was no significant difference in total petroleum hydrocarbon (TPH) concentration between the two types of soils, TPH had distinctly different effects on bacterial abundance in rhizosphere and bulk soils. TPH concentration was the major determinant of total bacterial abundance and had positive effects on abundances of hydrocarbon degraders. However, the abundances of total bacteria and hydrocarbon degraders in bulk soils were primarily determined by soil salinity and water content Great abundance of rhizosphere bacteria suggested that plant roots could alleviate the stresses from soil salinization and provide more favorable microhabitats for bacterial growth. TPH had positive effects on bacterial diversity of both rhizosphere and bulk soils. Our results support the view that petroleum in the environments functions as both toxic chemicals and carbon sources to soil bacteria. Great abundance and diversity of total bacteria in plant rhizospheres would potentially improve the roles of bacteria in maintaining ecosystem functioning in the degraded ecosystems. Our results would improve our understanding of the relationships between rhizosphere effects and multiple environmental stresses that control the development of bacterial community in fragile anthropologically-affected ecosystems. (C) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)2535-2542
Number of pages8
JournalSoil Biology and Biochemistry
Volume41
Issue number12
Early online date27 Sep 2009
DOIs
Publication statusPublished - Dec 2009

Keywords

  • bacterial communities
  • diversity
  • plant rhizosphere
  • petroleum contamination
  • saline soil
  • microbial community structure
  • phragmites-australis
  • geographic location
  • salinity
  • plant
  • scale
  • sediments
  • heterogeneity
  • hydrocarbons
  • populations

Cite this

Rhizosphere effects on soil bacterial abundance and diversity in the Yellow River Deltaic ecosystem as influenced by petroleum contamination and soil salinization. / Nie, Ming; Zhang, Xiao-dong; Wang, Jin-qing; Jiang, Li-fen; Yang, Ji; Quan, Zhe-xue; Cui, Xin-hong; Fang, Chang-ming; Li, Bo.

In: Soil Biology and Biochemistry, Vol. 41, No. 12, 12.2009, p. 2535-2542.

Research output: Contribution to journalArticle

Nie, Ming ; Zhang, Xiao-dong ; Wang, Jin-qing ; Jiang, Li-fen ; Yang, Ji ; Quan, Zhe-xue ; Cui, Xin-hong ; Fang, Chang-ming ; Li, Bo. / Rhizosphere effects on soil bacterial abundance and diversity in the Yellow River Deltaic ecosystem as influenced by petroleum contamination and soil salinization. In: Soil Biology and Biochemistry. 2009 ; Vol. 41, No. 12. pp. 2535-2542.
@article{619c34a5d2824588a2926e45254b75da,
title = "Rhizosphere effects on soil bacterial abundance and diversity in the Yellow River Deltaic ecosystem as influenced by petroleum contamination and soil salinization",
abstract = "In this study, we compared the differences of bacterial abundance and diversity between rhizosphere and surrounding bulk soils under soil salinization and petroleum contamination in the Yellow River Delta on a 110-km-distance scale. In comparison with bulk soils, rhizosphere soils were mainly characterized by lower-salinity and higher water content in saline soils. For bacterial abundance, the numbers of total bacteria and hydrocarbon degraders were significantly higher in rhizosphere soils than those in bulk soils. Although there was no significant difference in total petroleum hydrocarbon (TPH) concentration between the two types of soils, TPH had distinctly different effects on bacterial abundance in rhizosphere and bulk soils. TPH concentration was the major determinant of total bacterial abundance and had positive effects on abundances of hydrocarbon degraders. However, the abundances of total bacteria and hydrocarbon degraders in bulk soils were primarily determined by soil salinity and water content Great abundance of rhizosphere bacteria suggested that plant roots could alleviate the stresses from soil salinization and provide more favorable microhabitats for bacterial growth. TPH had positive effects on bacterial diversity of both rhizosphere and bulk soils. Our results support the view that petroleum in the environments functions as both toxic chemicals and carbon sources to soil bacteria. Great abundance and diversity of total bacteria in plant rhizospheres would potentially improve the roles of bacteria in maintaining ecosystem functioning in the degraded ecosystems. Our results would improve our understanding of the relationships between rhizosphere effects and multiple environmental stresses that control the development of bacterial community in fragile anthropologically-affected ecosystems. (C) 2009 Elsevier Ltd. All rights reserved.",
keywords = "bacterial communities, diversity, plant rhizosphere, petroleum contamination, saline soil, microbial community structure, phragmites-australis, geographic location, salinity, plant, scale, sediments, heterogeneity, hydrocarbons, populations",
author = "Ming Nie and Xiao-dong Zhang and Jin-qing Wang and Li-fen Jiang and Ji Yang and Zhe-xue Quan and Xin-hong Cui and Chang-ming Fang and Bo Li",
year = "2009",
month = "12",
doi = "10.1016/j.soilbio.2009.09.012",
language = "English",
volume = "41",
pages = "2535--2542",
journal = "Soil Biology and Biochemistry",
issn = "0038-0717",
publisher = "Elsevier Limited",
number = "12",

}

TY - JOUR

T1 - Rhizosphere effects on soil bacterial abundance and diversity in the Yellow River Deltaic ecosystem as influenced by petroleum contamination and soil salinization

AU - Nie, Ming

AU - Zhang, Xiao-dong

AU - Wang, Jin-qing

AU - Jiang, Li-fen

AU - Yang, Ji

AU - Quan, Zhe-xue

AU - Cui, Xin-hong

AU - Fang, Chang-ming

AU - Li, Bo

PY - 2009/12

Y1 - 2009/12

N2 - In this study, we compared the differences of bacterial abundance and diversity between rhizosphere and surrounding bulk soils under soil salinization and petroleum contamination in the Yellow River Delta on a 110-km-distance scale. In comparison with bulk soils, rhizosphere soils were mainly characterized by lower-salinity and higher water content in saline soils. For bacterial abundance, the numbers of total bacteria and hydrocarbon degraders were significantly higher in rhizosphere soils than those in bulk soils. Although there was no significant difference in total petroleum hydrocarbon (TPH) concentration between the two types of soils, TPH had distinctly different effects on bacterial abundance in rhizosphere and bulk soils. TPH concentration was the major determinant of total bacterial abundance and had positive effects on abundances of hydrocarbon degraders. However, the abundances of total bacteria and hydrocarbon degraders in bulk soils were primarily determined by soil salinity and water content Great abundance of rhizosphere bacteria suggested that plant roots could alleviate the stresses from soil salinization and provide more favorable microhabitats for bacterial growth. TPH had positive effects on bacterial diversity of both rhizosphere and bulk soils. Our results support the view that petroleum in the environments functions as both toxic chemicals and carbon sources to soil bacteria. Great abundance and diversity of total bacteria in plant rhizospheres would potentially improve the roles of bacteria in maintaining ecosystem functioning in the degraded ecosystems. Our results would improve our understanding of the relationships between rhizosphere effects and multiple environmental stresses that control the development of bacterial community in fragile anthropologically-affected ecosystems. (C) 2009 Elsevier Ltd. All rights reserved.

AB - In this study, we compared the differences of bacterial abundance and diversity between rhizosphere and surrounding bulk soils under soil salinization and petroleum contamination in the Yellow River Delta on a 110-km-distance scale. In comparison with bulk soils, rhizosphere soils were mainly characterized by lower-salinity and higher water content in saline soils. For bacterial abundance, the numbers of total bacteria and hydrocarbon degraders were significantly higher in rhizosphere soils than those in bulk soils. Although there was no significant difference in total petroleum hydrocarbon (TPH) concentration between the two types of soils, TPH had distinctly different effects on bacterial abundance in rhizosphere and bulk soils. TPH concentration was the major determinant of total bacterial abundance and had positive effects on abundances of hydrocarbon degraders. However, the abundances of total bacteria and hydrocarbon degraders in bulk soils were primarily determined by soil salinity and water content Great abundance of rhizosphere bacteria suggested that plant roots could alleviate the stresses from soil salinization and provide more favorable microhabitats for bacterial growth. TPH had positive effects on bacterial diversity of both rhizosphere and bulk soils. Our results support the view that petroleum in the environments functions as both toxic chemicals and carbon sources to soil bacteria. Great abundance and diversity of total bacteria in plant rhizospheres would potentially improve the roles of bacteria in maintaining ecosystem functioning in the degraded ecosystems. Our results would improve our understanding of the relationships between rhizosphere effects and multiple environmental stresses that control the development of bacterial community in fragile anthropologically-affected ecosystems. (C) 2009 Elsevier Ltd. All rights reserved.

KW - bacterial communities

KW - diversity

KW - plant rhizosphere

KW - petroleum contamination

KW - saline soil

KW - microbial community structure

KW - phragmites-australis

KW - geographic location

KW - salinity

KW - plant

KW - scale

KW - sediments

KW - heterogeneity

KW - hydrocarbons

KW - populations

U2 - 10.1016/j.soilbio.2009.09.012

DO - 10.1016/j.soilbio.2009.09.012

M3 - Article

VL - 41

SP - 2535

EP - 2542

JO - Soil Biology and Biochemistry

JF - Soil Biology and Biochemistry

SN - 0038-0717

IS - 12

ER -