Changes in antioxidants potential, secondary metabolites and plant hormones induced by different fungicides treatment in cotton plants
Akladious, samia; Heba Ibrahim Mohamed;
Abstract
The use of fungicides for an effective control of plant diseases has become crucial in the last decades in the agriculture
system. Seeds of cotton plantswere treated with systemic and contact fungicides to study the efficiency of
seed dressing fungicides in controlling damping off caused by Rhizoctonia solani under greenhouse conditions
and its effect on plant growth and metabolism. The results showed that Mon-cut showed the highest efficiency
(67.99%) while each of Tondro and Hemixet showed the lowest efficiency (31.99%) in controlling damping off.
Rhizolex T,Mon-cut and Tondro fungicides caused significant decrease in plant height, dry weight of plant, phytohormones,
photosynthetic pigments, soluble sugars, soluble proteins, total free amino acids but caused significant
increases in total phenols, flavonoids, antioxidant enzymes, ascorbic acid, reduced glutathione, MDA and
hydrogen peroxide as comparedwith untreated plants. On the other hand, the other fungicides (Maxim, Hemixet
and Flosan) increased all the above recorded parameters as comparedwith untreated plants. Our results indicated
that the fungicides application could be a potential tool to increase plant growth, the antioxidative defense
mechanisms and decreased infection with plant diseases.
system. Seeds of cotton plantswere treated with systemic and contact fungicides to study the efficiency of
seed dressing fungicides in controlling damping off caused by Rhizoctonia solani under greenhouse conditions
and its effect on plant growth and metabolism. The results showed that Mon-cut showed the highest efficiency
(67.99%) while each of Tondro and Hemixet showed the lowest efficiency (31.99%) in controlling damping off.
Rhizolex T,Mon-cut and Tondro fungicides caused significant decrease in plant height, dry weight of plant, phytohormones,
photosynthetic pigments, soluble sugars, soluble proteins, total free amino acids but caused significant
increases in total phenols, flavonoids, antioxidant enzymes, ascorbic acid, reduced glutathione, MDA and
hydrogen peroxide as comparedwith untreated plants. On the other hand, the other fungicides (Maxim, Hemixet
and Flosan) increased all the above recorded parameters as comparedwith untreated plants. Our results indicated
that the fungicides application could be a potential tool to increase plant growth, the antioxidative defense
mechanisms and decreased infection with plant diseases.
Other data
Title | Changes in antioxidants potential, secondary metabolites and plant hormones induced by different fungicides treatment in cotton plants | Authors | Akladious, samia ; Heba Ibrahim Mohamed | Keywords | Flavonoid;Amino acid;Hydrogen peroxide;Phenols;Photosynthetic pigments | Issue Date | Mar-2017 | Publisher | Elsevier B.V. | Source | www.elsevier.com/ locate/pest | Journal | Pesticide Biochemistry and Physiology | DOI | http://dx.doi.org/10.1016/j.pestbp.2017.04.001 |
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