Effect of Pesticides on Plant Growth Promoting Traits of Greengram-Symbiont, Bradyrhizobium sp. strain MRM6

The aim of this study was to investigate the toxicity of herbicides (metribuzin and glyphosate), insecticides (imidacloprid and thiamethoxam) and fungicides (hexaconazole, metalaxyl and kitazin) at the recommended and the higher dose rates on plant growth promoting activities of Bradyrhizobium sp. u...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2011-04, Vol.86 (4), p.384-388
Main Authors: Ahemad, Munees, Khan, Mohammad Saghir
Format: Article
Language:English
Subjects:
Alanine - analogs & derivatives
Alanine - toxicity
Aquatic Pollution
Bradyrhizobium
Bradyrhizobium - drug effects
Bradyrhizobium - isolation & purification
Dose-Response Relationship, Drug
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Fabaceae - microbiology
Fungi
Fungicides
Fungicides, Industrial - toxicity
Glycine - analogs & derivatives
Glycine - toxicity
Glyphosate
Herbicides
Herbicides - toxicity
hexaconazole
imidacloprid
Imidazoles - toxicity
Insecticides
Insecticides - toxicity
metalaxyl
metribuzin
mung beans
Neonicotinoids
Nitro Compounds - toxicity
Organothiophosphorus Compounds - toxicity
Oxazines - toxicity
Pesticides
Plant growth
Pollution
Saccharides
Soil Science & Conservation
Symbiosis
Thiamethoxam
Thiazoles - toxicity
Toxicity
Triazines - toxicity
Triazoles - toxicity
Waste Water Technology
Water Management
Water Pollution Control
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Summary:The aim of this study was to investigate the toxicity of herbicides (metribuzin and glyphosate), insecticides (imidacloprid and thiamethoxam) and fungicides (hexaconazole, metalaxyl and kitazin) at the recommended and the higher dose rates on plant growth promoting activities of Bradyrhizobium sp. under in vitro conditions. The Bradyrhizobium sp. strain MRM6 was isolated from nodules of greengram plants. Pesticide-concentration dependent progressive-decline was observed in plant growth promoting traits of the strain MRM6 apart from exo-polysaccharides which increased consistently on increasing pesticide concentrations. Generally, the highest toxicity to plant growth promoting characteristics of the Bradyrhizobium sp. strain MRM6 was observed when the strain MRM6 was grown with three times the recommended field rates of glyphosate, imidacloprid and hexaconazole.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-011-0231-1