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Nutrition / Diet News

Natural Hormone Enables Plants To Rid Themselves Of Pesticide Residues

Main Category: Nutrition / Diet
Also Included In: Endocrinology;  Water - Air Quality / Agriculture;  Public Health
Article Date: 01 Oct 2009 - 4:00 PDT

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Scientists in China have discovered that a natural plant hormone, applied to crops, can help plants eliminate residues of certain pesticides. The study is in the current issue of ACS' Journal of Agricultural and Food Chemistry, a bi-weekly publication.

Jing Quan Yu and colleagues note that pesticides are essential for sustaining food production for the world's growing population. Farmers worldwide use about 2.5 million tons of pesticides each year. Scientists have been seeking new ways of minimizing pesticide residues that remain in food crops after harvest - with little success. Previous research suggested that plant hormones called brassinosteroids (BRs) might be an answer to the problem.

The scientists treated cucumber plants with one type of BR then treated the plants with various pesticides, including chloropyrifos (CPF), a broad-spectrum commercial insecticide. BR significantly reduced their toxicity and residues in the plants, they say. BRs may be "promising, environmentally friendly, natural substances suitable for wide application to reduce the risks of human and environmental exposure to pesticides," the scientists note. The substances do not appear to be harmful to people or other animals, they add.

ARTICLE:
"Brassinosteroids Promote Metabolism of Pesticides in Cucumber"
http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/jf901915a

Source:
Michael Woods
American Chemical Society




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