Bertosi et al. Botanical Bulletin of Academia Sinica, Vol. Bayley et al. If polyamines can substitute for inorganic nitrogen in the growth of rice cells, then nitrogen deficient rice cells would be expected to recover the growth by the addition of polyamines. The availability of potassium is known to have a large impact on plant growth.
P is one of the most important yet least available mineral nutrients for plant growth.
Using aseptic cultures of Lemna paucicostala 6746 and Lemna gibba G3, Tachimoto et al. Murty et al. However, this mechanism can not explain the role of putrescine in phosphate-deprived plants, since phosphate is an inorganic anion. Polyamines and Paraquat Toxicity Paraquat is a herbicide widely used in agriculture. Very little is known about the effects of herbicides on polyamine levels in plants.