Nanomaterials and Nanocomposites Exposures to Plants: An overview.- Phytotoxicity Response and Defense Mechanisms of Nanocomposites or Mixture of Nanoparticles.- Phytotoxicity Response and Defense Mechanisms of heavy metals and metal-containing nanoparticles.- Toxicity assessment of silver nanoparticles and silver ions on plant growth.- Toxicity assessment of gold nanoparticles and gold ions on plant growth.- Plant response to selenium nanoparticles: growth performance, Phytotoxicity and Defense Mechanisms.- Plant response to platinum nanoparticles: growth performance, Phytotoxicity and Defense Mechanisms.- Plant response to silicon nanoparticles: growth performance, Phytotoxicity and Defense Mechanisms.- Plant response to iron nanoparticles: growth performance, Phytotoxicity and Defense Mechanisms.- Cerium Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Zinc Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Copper Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Titanium Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Iron Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Aluminium Oxide Nanoparticles: Plant Response, Interaction, Phytotoxicity and Defense Mechanisms.- Interaction between metal nanoparticles and PGPR on the plant growth and development.- Interaction between metal-oxide nanoparticles and PGPR on the plant growth and development.- Synergistic Effects of Nanomaterials/Nanocomposites and Heavy Metals Toxicity in Plant.- Effects of Nanomaterials/Nanocomposites on trace element uptake and phytotoxicity.- Nanomaterials/Nanocomposites and their toxicity to beneficial soil bacteria and fungi associated plants Rhizosphere.- Polymeric nanomaterials and their interaction during seed germination and plant growth.- Nanomaterials/Nanocomposites and their effects on seed germination: stimulation and toxicity response.<p></p>