Watercress (Nasturtium officinale) - This aquatic plant is known for its ability to accumulate heavy metals like arsenic and mercury in its leaves. Future research could look into the effects of various growth conditions (e.g. nutrient availability) on its metal uptake capabilities.
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1. Investigate the potential use of watercress as a bioindicator for heavy metal pollution in aquatic environments. This could involve studying its metal uptake patterns in different polluted water sources and comparing them to traditional water quality monitoring methods.
2. Explore the possibility of using watercress to phytoremediate contaminated water bodies. This could involve growing watercress in polluted waters and measuring its ability to remove heavy metals from the environment.
3. Examine the potential health risks associated with consuming watercress that has accumulated heavy metals. This could involve studying the transfer of metals from watercress to the food chain and evaluating the potential impact on human health.
4. Investigate the genetic basis of watercress' ability to accumulate heavy metals. This could involve studying the genetic mechanisms responsible for metal uptake and identifying genetic markers for selecting high-uptake varieties.
5. Explore the potential applications of watercress in sustainable agriculture, such as using it as a cover crop in metal-contaminated soils to prevent metal leaching and improve soil quality.