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PHYTOAVAILABILITY OF CADMIUM - Coggle Diagram
PHYTOAVAILABILITY OF CADMIUM
Introduction
Cadmium is not required for plant development or reproduction, but due to its high mobility in soil, it outperforms all other trace elements in terms of bioaccumulation and subsequent accumulation in the food chain.
It is the most poisonous element in the environment, damaging to living cells even at low doses and considered carcinogenic.
Cd poisoning in humans can cause testicular damage, renal and hepatic failure, and even death.
Materials and Methods
Total Cd of Soil and Plant
Plant Sample Collection
plant sample was harvested after 30 days from transplanting
Mehlich-3 Extractable Cd in Soils
Cadmium Spiking and Aging
Soil Collection and Analysis
soils samples were taken at a depth of up to 20cm from the upper horizon
each sample was air-dried, ground, and screened
Quality Control for Cd Analysis
Result
Accumulation and Distribution of Cadmium
Cadmium concentrations in Pak choi shoots and roots differed considerably amongst soils with varying Cd levels and soil types.
Biomass Yield of Pak Choi
Pak choi shoot biomass did not decrease appreciably under varied Cd treatments in these soils when compared to their respective controls.
Characteristics of soils
pH range of soils were strongly acidic to mild alkaline
Discussion
The detrimental effects of Cd on the roots may cause changes in many physiological and biochemical processes in plant tissues, such as a loss in dry biomass, and plants may be unable to take up nutrients to continue their usual activities. Cd has been shown to impede plant growth and development by interfering with a variety of metabolic processes, including proton pump inhibition, root elongation decrease, and photosynthetic activity damage.