The literature suggests that amino acid content in leaves increases with nickel toxicity in plants. But in my study, i have found sharp decrease in leaf amino acid content due to nickel toxicity. Any explanation?
That's a well known fact , Khalid . Under any heavy metal toxicity , you will observe a decrease in amino acids concentration. The Ni disintegrates the cellular stability and induces chromosomal aberration , thereby , amino acids to loose their structural stability....no surprise
There is evidence that heavy metals stress can result in accumulation of different amino acids in plants cell due to breakdown of proteins.
Such as:
"Metal stress also results in the accumulation of different amino acids in plant cells, leading to a considerable reduction in total protein content (Ali et al. 2009). The accumulation of amino acids detoxifies metals and protects the plants from their toxic effects (Clemens 2001; Hall 2002)."
Can you@Anoop Kumar Srivastava suggest any research study supporting your explanation?
You can notice an increase in amino acid like praline under influence of nickel toxicity. Let's also visualise the difference in response of plants to deficient level of nickel to toxic level of nickel...
Yes True. Thank you for your answer. Can you share any study/ research paper on the same?
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