<p>1. Sources of silicon and nano-silicon in soil and plants<br>2. Silicon and nano-silicon: New frontiers of biostimulants for plant growth and stress amelioration<br>3. Silicon uptake, acquisition and accumulation in plants<br>4. Silicon bioavailability in relation to plant nutrition<br>5. Use of silicon and nano-silicon in agro-biotechnologies<br>6. The genetics of silicon accumulation by plants<br>7. Silicon-mediated modulations of genes and secondary metabolites in plants<br>8. Silicon-mediated salt stress tolerance in plants<br>9. Nano-silicon mediated salt stress tolerance in plants<br>10. Silicon and nano-silicon mediated drought and waterlogging stress tolerance in plants<br>11. Silicon and nano-silicon mediated heat stress tolerance in plants<br>12. Silicon and nano-silicon mediated cold stress tolerance in plants<br>13. Silicon and nano-silicon mediated heavy metal stress tolerance in plants<br>14. Silicon and nano-silicon mediated disease resistance in crop plants<br>15. Silicon and nano-silicon mediated nutrient deficiency tolerance in crop plants<br>16. Silicon as a plant defence against insect herbivory<br>17. Recent developments in nano-silicon mediated tolerance against herbivores<br>18. Interactive effects of silicon, nano-silicon and arbuscular mycorrhiza on the resistance of plants to various stresses<br>19. Biodissolution of silica by silicate solubilizing microorganisms in rhizosphere of plants<br>20. Silicon and nano-silicon in plant nutrition and crop quality<br>21. Effect of silicon and nano-silicon application on rice yield and quality<br>22. Biological impacts on silicon availability and cycling in agricultural plant-soil systems<br>23. Exogenous silicone-mediated plant growth and environmental stress tolerance in plants<br>24. Manipulation of silicon metabolism in plants for stress tolerance<br>25. Future research direction of silicon and nano-silicon in crop stress tolerance and crop quality improvements</p>
