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Authors Malik, KA; Bilal, R; Mehnaz, S; Rasul, G; Mirza, MS; Ali, S
Author Full Name Malik, KA; Bilal, R; Mehnaz, S; Rasul, G; Mirza, MS; Ali, S
Title Association of nitrogen-fixing, plant-growth-promoting rhizobacteria (PGPR) with kallar grass and rice
Source PLANT AND SOIL
Language English
Document Type Article; Proceedings Paper
Conference Title Meeting on Opportunities for Biological Nitrogen Fixation in Rice and Other Non-Legumes
Conference Date OCT 13-15, 1996
Conference Location NATL INST BIOTECHNOL & GENET ENGN, FALSALABAD, PAKISTAN
Conference Sponsors Frontier Project Nitrogen Fixat Rice, 2nd Working Grp
Conference Host NATL INST BIOTECHNOL & GENET ENGN
Author Keywords acetylene reduction; Azospirillum; Azoarcus; grasses; N-15 isotope dilution; root-associated bacterial population
Keywords Plus N-15 ISOTOPE-DILUTION; FUSCA L KUNTH; AZOSPIRILLUM-BRASILENSE; SP-NOV; GEN-NOV; N-15-ISOTOPE DILUTION; LIPOFERUM BEIJERINCK; DINITROGEN FIXATION; ACETYLENE-REDUCTION; N2 FIXATION
Abstract Leptochloa fusca (L.) Kunth (kallar grass) has previously been found to exhibit high rates of nitrogen fixation. A series of experiments to determine the level of biological nitrogen fixation using N-15 isotopic dilution were carried out in nutrient solution and saline soil. These studies indicated an agronomically significant amount of nitrogen being fixed in soil. Kallar grass has a similar growth habitat to rice. Therefore similar studies were carried out with rice after isolating various diazotrophs from the roots which were also screened for their ability to produce auxin (IAA). Five such strains namely Azospirillum lipoferum N-4, Azospirillum brasilense Wb-3, Azoarcus K-1, Pseudomonas 96-51, Zoogloea Ky-1 were selected for inoculating two rice varieties i.e. NIAB-6 and BAS-370 under aseptic laboratory conditions. The nitrogen fixed was quantified using the N-15 isotopic dilution method. Variety BAS-370 had nearly 70% nitrogen derived from atmosphere (Ndfa) when inoculated with Azospirillum N-4. Similar studies with the mixed inoculum using N-15 fertilizer in the micro plots indicated that nearly 29% of plant nitrogen was derived from the atmosphere.
Reprint Address Malik, KA (reprint author), NATL INST BIOTECHNOL & GENET ENGN,POB 577,FAISALABAD,PAKISTAN.
ResearcherID Number Mehnaz, Samina/H-5003-2019; Mehnaz, Samina/I-1533-2015
ORCID Number Mehnaz, Samina/0000-0001-9828-255X;
Times Cited 96
Total Times Cited Count (WoS, BCI, and CSCD) 129
Publisher KLUWER ACADEMIC PUBL
Publisher City DORDRECHT
Publisher Address SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS
ISSN 0032-079X
29-Character Source Abbreviation PLANT SOIL
ISO Source Abbreviation Plant Soil
Publication Date JUL
Year Published 1997
Volume 194
Issue 1-2
Beginning Page 37
Ending Page 44
Digital Object Identifier (DOI) 10.1023/A:1004295714181
Page Count 8
Web of Science Category Agronomy; Plant Sciences; Soil Science
Subject Category Agriculture; Plant Sciences
Document Delivery Number YE296
Unique Article Identifier WOS:A1997YE29600006
Plants associated with this reference

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