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Table 4 The observed positive effects of MnNPs on plants

From: Nanoparticles based on essential metals and their phytotoxicity

Plant Particle size (nm) Particle concentration Comment Observed effect References
Vigna radiata MnNPs 50, 100, 500, 1000 mg L−1 Leaf and root enzyme extract was analyzed for use as nanofertilizer Nitrogen uptake, its assimilation, and metabolism was increased after MnNPs soil application [82]
Vigna radiata MnNPs 50, 100, 500, 1000 mg L−1 Leaf and root enzyme extract was analyzed. Chloroplasts from leaves were isolated and analyzed for their level of photophosphorylation and oxygen evolution MnNP-treated chloroplasts showed greater photophosphorylation, oxygen evolution with respect to control and MnSO4-treated chloroplasts. Positive effects on root and shoot elongation was observed [57]
Lactuca sativa MnOx NPs 5–15 nm 0.25, 0.5, 5, 10, mg L−1 Overall, the data suggests that MnOx NPs can be used as an Mn fertilizer (better than their soluble or bulk solid counterparts) for crop growth improvement MnOx NPs specifically improved the growth of lettuce seedlings by enhancing root elongation [83]