Apart from other abiotic factors (such as water, sunlight, oxygen, temperature etc) that can influence diseases in plants, can we also consider high levels of heavy metals in soil/plant as a factor?
Heavy metals can be considered as potential factor related with food spoilage. The effect on plants include effects on plant acquired resistance reactions. In areas such as China and India the continuing reliance on coal has enormous potential to contribute to mercury issues which are volatilized in its combustion. The acidic aerosols will also liberate heavy metals which are largely insoluble under neutral and alkaline pH. Heavy metals can be particularly dangerous around point contamination sources.
I think yes, although the effect of heavy metal toxicity on the plant growth varies depends on the particular heavy metal involve in the process. High degree of toxicity occurred due to arsenic, cadmium, chromium, lead and mercury. Small concentration of some of the heavy metal like zinc and copper are beneficial to plants. Heavy metals like lead, zinc and copper effect the fungal growth.
Yes it is true that heavy metal present in soils pose adverse effects on food safety, marketability and crop growth due to phytotoxicity, and environmental health of soil organisms.
Yes, high bio-accumulation of heavy metals causes toxicity to plants in various way, develop diseases. As Dr. Paul Reed Hepperly sir elaborate previously..
Yes they certainly contribute to problem of spoilage and deterioration in quality.
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