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Authors Khan, MU; Sessitsch, A; Harris, M; Fatima, K; Imran, A; Arslan, M; Shabir, G; Khan, QM; Afzal, M
Author Full Name Khan, Muhammad U.; Sessitsch, Angela; Harris, Muhammad; Fatima, Kaneez; Imran, Asma; Arslan, Muhammad; Shabir, Ghulam; Khan, Qaiser M.; Afzal, Muhammad
Title Cr-resistant rhizo- and endophytic bacteria associated with Prosopis juliflora and their potential as phytoremediation enhancing agents in metal-degraded soils
Source FRONTIERS IN PLANT SCIENCE
Language English
Document Type Article
Author Keywords Prosopis juliflora; heavy metals; phytoremediation; Cr-resistant bacteria; plant growth-promoting bacteria; rhizobacteria; endophytic bacteria
Keywords Plus METHOD AFFECTS COLONIZATION; GROWTH-PROMOTING BACTERIA; PLANT-GROWTH; HEAVY-METALS; HYDROCARBON DEGRADATION; ITALIAN RYEGRASS; CHROMIUM; STRAIN; PHYTOEXTRACTION; INOCULATION
Abstract Prosopis juliflora is characterized by distinct and profuse growth even in nutritionally poor soil and environmentally stressed conditions and is believed to harbor some novel heavy metal-resistant bacteria in the rhizosphere and endosphere. This study was performed to isolate and characterize Cr-resistant bacteria from the rhizosphere and endosphere of P juliflora growing on the tannery effluent contaminated soil. A total of 5 and 21 bacterial strains were isolated from the rhizosphere and endosphere, respectively, and were shown to tolerate Cr up to 3000 mg I-1. These isolates also exhibited tolerance to other toxic heavy metals such as, Cd, Cu, Pb, and Zn, and high concentration (174g I-1) of NaCl. Moreover, most of the isolated bacterial strains showed one or more plant growth-promoting activities. The phylogenetic analysis of the 16S rRNA gene showed that the predominant species included Bacillus, Staphylococcus and Aerococcus. As far as we know, this is the first report analyzing rhizo- and endophytic bacterial communities associated with P juliflora growing on the tannery effluent contaminated soil. The inoculation of three isolates to ryegrass (Lolium multiflorum L.) improved plant growth and heavy metal removal from the tannery effluent contaminated soil suggesting that these bacteria could enhance the establishment of the plant in contaminated soil and also improve the efficiency of phytoremediation of heavy metal-degraded soils.
Author Address [Khan, Muhammad U.; Harris, Muhammad; Fatima, Kaneez; Imran, Asma; Arslan, Muhammad; Shabir, Ghulam; Khan, Qaiser M.; Afzal, Muhammad] Natl Inst Biotechnol & Genet Engn, Environm Biotechnol Div, Faisalabad 38000, Pakistan; [Sessitsch, Angela] Austrian Inst Technol GmbH, Bioresources Unit, Tulln, Austria; [Arslan, Muhammad] King Fahd Univ Petr & Minerals, Dept Earth Sci, Dhahran 31261, Saudi Arabia
Reprint Address Afzal, M (corresponding author), Natl Inst Biotechnol & Genet Engn, Environm Biotechnol Div, POB 577,Jhang Rd, Faisalabad 38000, Pakistan.
E-mail Address manibge@yahoo.com
ResearcherID Number Arslan, Muhammad/E-3931-2019; Khan, Qaiser Mahmood/I-6401-2015; Sessitsch, Angela/AAW-3191-2020; Afzal, Muhammad/G-2699-2011
ORCID Number Arslan, Muhammad/0000-0002-9620-6710; Sessitsch, Angela/0000-0003-0137-930X; Afzal, Muhammad/0000-0003-1511-816X
Funding Agency and Grant Number Higher Education Commission (HEC), PakistanHigher Education Commission of Pakistan; International Foundation of Science (IFS) SwedenInternational Foundation for Science; Organisation for the Prohibition of Chemical Weapons (OPCW) [W/5104-2]; FWF (Austrian Science Foundation)Austrian Science Fund (FWF) [P 24569-B25]; Austrian Science Fund (FWF)Austrian Science Fund (FWF) [P 24569] Funding Source: researchfish
Funding Text This study was financially supported by Higher Education Commission (HEC, grant number 1997), Pakistan and International Foundation of Science (IFS) Sweden and Organisation for the Prohibition of Chemical Weapons (OPCW) (grant number W/5104-2). We acknowledge the support by a grant provided by the FWF (Austrian Science Foundation, grant no. P 24569-B25) to AS.
Times Cited 78
Total Times Cited Count (WoS, BCI, and CSCD) 80
Publisher FRONTIERS MEDIA SA
Publisher City LAUSANNE
Publisher Address AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, CH-1015, SWITZERLAND
ISSN 1664-462X
29-Character Source Abbreviation FRONT PLANT SCI
ISO Source Abbreviation Front. Plant Sci.
Publication Date JAN 6
Year Published 2015
Volume 5
Article Number 755
Digital Object Identifier (DOI) 10.3389/fpls.2014.00755
Page Count 10
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number AZ1WG
Unique Article Identifier WOS:000348025100001
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