Nickel deficiency is rarely encountered under field conditions since its requirement by plants is extremely low (nanogram level). Ni deficiency results in accumulation of toxic concentration of urea in the leaves due to depression of urease activity. Nickel acts as a cofactor of enzyme urease and is essential for conversion of urea into NH4 + for use by plant tissues. AtIRT1 (iron-regulated transporter1), a member of ZIP family involved in high-affinity iron uptake by roots of Arabidopsis, has also been suggested to transport Ni.
KeywordsEnzyme Urease Cation Diffusion Facilitator Nanogram Level Ferric Chelate Reductase Leaf Bronzing
- Graham RD, Welch RM, Walker CD (1985) A role of nickel in the resistance of plants to rust. In: Proceedings of the 3rd Australian agron conference, HobartGoogle Scholar
- Liu GD (2001) A new essential mineral element – nickel. Plant Nutr Fertil Sci 7(1):101–103Google Scholar
- Liu GE, Simonne H, Li Y (2012) Nickel nutrition in plants, HS1191, One of a series of the horticultural sciences, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date June 2011Google Scholar
- Salt DE, Kato N, Krämer U, Smith RD, Raskin I (2000) The role of root exudates in nickel hyper accumulation and tolerance in accumulator and non accumulator species of Thlaspi. In: Terry N, Banuelos G (eds) Phytoremediation of contaminated soil and water. Lewis Publishers, Boca Raton, pp 189–200Google Scholar
- von Wirén N, Mori S, Marschner H, Römheld V (1994) Iron inefficiency in maize mutant ys1 (Zea mays L. cv yellow-stripe) is caused by a defect in uptake of iron phytosiderophores. Plant Physiol 106(1):71–77Google Scholar