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  • Effect of some plant growth regulators on lindane and alpha-endosulfan toxicity to Brassica chinensis.

Effect of some plant growth regulators on lindane and alpha-endosulfan toxicity to Brassica chinensis.

Journal of environmental biology (2013-01-31)
Waraporn Chouychai
ABSTRACT

The effect of indolebutyric acid (IBA) and gibberellic acid (GA3), to alleviate the organochlorine phytotoxicity were studied in Brassica chinensis. Presence of organochlorine decreased Brassica chinensis seedlings growth in contaminated alkaline soil. One mg l(-1) IBA could enhance 14 and 26% shoot and root length of B. chinensis seedlings grown at 40 mg kg(-1) lindane contaminated soil, respectively. Ten mg l(-1) IBA also increased 80 and 40% root fresh weight of seedling grown in 40 mg kg(-1) lindane and alpha-endosulfan contaminated soils, respectively. However, IBAhad no effect on shoot and root length of seedlings grown in endosulfan contaminated soil. On the other hand, 10 mg l(-1) GA3 only increased 80% of shoot and root fresh weigh of B. chinensisin 40 mg kg(-1) endosulfan contaminated soil. External auxin addition could increase B. chinensis growth in lindane more than endosulfan contaminated soil. External gibberellin was less effective than external auxin to increase B. chinensis growth in organochlorine contaminated soil. There is possibility that auxin could decrease organochlorine phytotoxicity in plants and hence can be useful for organochlorine phytoremediation.

MATERIALS
Product Number
Brand
Product Description

Supelco
Lindane, PESTANAL®, analytical standard
Supelco
Lindane, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Indole-3-butyric acid, suitable for plant cell culture, BioReagent
Sigma-Aldrich
Gibberellic acid, suitable for plant cell culture, BioReagent, ≥90% gibberellin A3 basis (of total gibberellins.)
Supelco
Gibberellic acid, PESTANAL®, analytical standard
Sigma-Aldrich
Indole-3-butyric acid, ≥98.0% (T)
Supelco
Endosulfan, PESTANAL®, analytical standard
Supelco
γ-BHC, certified reference material, 1000 μg/mL in methanol
Sigma-Aldrich
Indole-3-butyric acid potassium salt, suitable for plant cell culture, BioReagent
Sigma-Aldrich
Gibberellic acid potassium salt, suitable for plant cell culture, BioReagent, ~95%, ≥50% total GA3 basis
Sigma-Aldrich
Gibberellic acid, 90% gibberellin A3 basis (HPLC)