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Publication Type J
Authors Ravikumar, S; Ramanathan, G; Suba, N; Jeyaseeli, L; Sukumaran, M
Author Full Name Ravikumar, S; Ramanathan, G; Suba, N; Jeyaseeli, L; Sukumaran, M
Title Quantification of halophilic Azospirillum from mangroves
Source INDIAN JOURNAL OF MARINE SCIENCES
Language English
Document Type Article
Author Keywords Azospirillum; indole acetic acid; mangroves; nitrogen fixation
Abstract Bacterial density of Azospirillum was found higher in the roots of Avicennia marina (148.88 x 10(4) 9(-1) dry weight) and rhizosphere sediment of Suaeda monoica (20.0 x 10(3) g(-1) dry weight). The growth, production of indole acetic acid (IAA) and the rate of nitrogen fixation in Azospirillum brasilense were found to be maximum at pH 7.0. At 3 % NaCl, it showed better growth and production of IAA, however the rate of nitrogen fixation was slowed down at 1 % NaCl and was completely arrested at 1.5 %. The percentage of germination in coastal crop plants increased by 70 % in black gram and 45 % in rice with the inoculation of Azospirillum brasilense compared with control. The saline tolerant Azospirillum is recommended as biofertilizer for improving crop yield in coastal agricultural fields.
Author Address Manonmaniam Sundaranar Univ, Marine Biotechnol Lab, Inst Coastal Area Studies, Nagercoil 629003, Tamil Nadu, India
Reprint Address Ravikumar, S (reprint author), Manonmaniam Sundaranar Univ, Marine Biotechnol Lab, Inst Coastal Area Studies, Scott Christian Coll Campus, Nagercoil 629003, Tamil Nadu, India.
Cited References Chandramohan D., 1988, MANGROVE MICROBIOLOG, P61; CHAPMAN VJ, 1984, MANGROVE ECOSYSTEM R, P53; Gordon S.A., 1957, PLANT PHYSIOL, V10, P37; Holston R.D., 1975, SOIL BIOL BIOCHEM, V2, P47; Hiltner L, 1904, ARB DEUT LANDW GES, V98, P59; HOLT JG, 1994, BERGEYS MANUAL DETER, P240; KAVIMANDAN SK, 1978, CURR SCI INDIA, V47, P96; Ravikumar S, 1995, THESIS ANNAMALAI U I; RODRIGUEZBAZRUE.C, 1991, GROWTH PROMOTING EFF, P121; TIEN TM, 1979, APPL ENVIRON MICROB, V37, P1016; 1975, METHODS ESTIMATION W, P203
Cited Reference Count 11
Times Cited 12
Total Times Cited Count (WoS, BCI, and CSCD) 13
Publisher NATL INST SCIENCE COMMUNICATION
Publisher City NEW DELHI
Publisher Address DR K S KRISHNAN MARG, NEW DELHI 110 012, INDIA
ISSN 0379-5136
29-Character Source Abbreviation INDIAN J MAR SCI
ISO Source Abbreviation Indian J. Mar. Sci.
Publication Date JUN
Year Published 2002
Volume 31
Issue 2
Beginning Page 157
Ending Page 160
Page Count 4
Web of Science Category Oceanography
Subject Category Oceanography
Document Delivery Number 563WM
Unique Article Identifier WOS:000176279900012
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