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Authors Akram, MS; Shahid, M; Tariq, M; Azeem, M; Javed, MT; Saleem, S; Riaz, S
Author Full Name Akram, Muhammad S.; Shahid, Muhammad; Tariq, Mohsin; Azeem, Muhammad; Javed, Muhammad T.; Saleem, Seemab; Riaz, Saba
Title Deciphering Staphylococcus sciuri SAT-17 Mediated Anti-oxidative Defense Mechanisms and Growth Modulations in Salt Stressed Maize (Zea mays L.)
Source FRONTIERS IN MICROBIOLOGY
Language English
Document Type Article
Author Keywords antioxidants; biofertilizer; reactive oxygen species; salinity; Staphylococcus sciun; Zea mays
Keywords Plus PLANT-GROWTH; PROMOTING RHIZOBACTERIA; ROOT COLONIZATION; ENZYME-ACTIVITIES; SALINITY; BACTERIA; RHIZOSPHERE; PSEUDOMONAS; TOLERANCE; LEAVES
Abstract Soil salinity severely affects plant nutrient use efficiency and is a worldwide constraint for sustainable crop production. Plant growth-promoting rhizobacteria, with inherent salinity tolerance, are able to enhance plant growth and productivity by inducing modulations in various metabolic pathways. In the present study, we reported the isolation and characterization of a salt-tolerant rhizobacterium from Kallar grass [Leptochloa fusca (L.) Kunth]. Sequencing of the 16S rRNA gene revealed its lineage to Staphylococcus sciuri and it was named as SAT-17. The strain exhibited substantial potential of phosphate solubilization as well as indole-3-acetic acid production (up to 2 M NaCl) and 1-waminocyclopropane-1-carboxylic acid deaminase activity (up to 1.5 M NaCI). Inoculation of a rifampicin-resistant derivative of the SAT-17 with maize, in the absence of salt stress, induced a significant increase in plant biomass together with decreased reactive oxygen species and increased activity of cellular antioxidant enzymes. The derivative strain also significantly accumulated nutrients in roots and shoots, and enhanced chlorophyll and protein contents in comparison with non-inoculated plants. Similar positive effects were observed in the presence of salt stress, although the effect was more prominent at 75 mM in comparison to higher NaCI level (150 mM). The strain survived in the rhizosphere up to 30 days at an optimal population density (ca. 1 x 10(6) CFU mL(-1)). It was concluded that S. sciuri strain SAT-17 alleviated maize plants from salt-induced cellular oxidative damage and enhanced growth. Further field experiments should be conducted, considering SAT-17 as a potential bio-fertilizer, to draw parallels between PGPR inoculation, elemental mobility patterns, crop growth and productivity in salt-stressed semi-arid and arid regions.
Author Address [Akram, Muhammad S.; Azeem, Muhammad; Javed, Muhammad T.; Riaz, Saba] Govt Coll Univ, Dept Bot, Faisalabad, Pakistan; [Shahid, Muhammad; Tariq, Mohsin; Saleem, Seemab] Govt Coll Univ, Dept Bioinformat & Biotechnol, Faisalabad, Pakistan
Reprint Address Shahid, M (reprint author), Govt Coll Univ, Dept Bioinformat & Biotechnol, Faisalabad, Pakistan.
E-mail Address shahidmpg@yahoo.com
ORCID Number Azeem, Muhammad/0000-0002-4168-941X
Funding Agency and Grant Number Government College University, Faisalabad, Pakistan under annual departmental (BNB)
Funding Text The present work was solely funded by Government College University, Faisalabad, Pakistan under annual departmental (BNB research grant) research fund. We gratefully acknowledge Dr. Qasim Ali, Assistant Professor, Department of Botany, Government College University, Faisalabad for assistance in macro- and micro-nutrient analysis through atomic absorption spectrophotometry.
Times Cited 18
Total Times Cited Count (WoS, BCI, and CSCD) 20
Publisher FRONTIERS MEDIA SA
Publisher City LAUSANNE
Publisher Address AVENUE DU TRIBUNAL FEDERAL 34, LAUSANNE, CH-1015, SWITZERLAND
ISSN 1664-302X
29-Character Source Abbreviation FRONT MICROBIOL
ISO Source Abbreviation Front. Microbiol.
Publication Date JUN 9
Year Published 2016
Volume 7
Article Number 867
Digital Object Identifier (DOI) 10.3389/fmicb.2016.00867
Page Count 14
Web of Science Category Microbiology
Subject Category Microbiology
Document Delivery Number DN8WD
Unique Article Identifier WOS:000377359700001
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