Saturday, February 11, 2012

Here's some cool research on the effect of heavy metals on chlorophyll levels in bean plants.

In, summary, the findings were:

The present results showed that lead, copper, cadmium and mercury toxicity decreased the total chlorophyll content of the leaves of bean seedlings. In response to heavy metal stress, the plants increased their proline, retinol, α-tocopherol and ascorbic acid content. The highest increases in proline, retinol, α-to- copherol and ascorbic acid content and greatest reduc- tion in total chlorophyll were found in plants exposed to mercury, followed by the sequence cadmium > copper > lead.

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