Combined Soil Microorganism Amendments and Foliar Micronutrient Nanofertilization Increased the Production of L. through Aquaporin Gene Regulation.

The aim of this study was to investigate the impact of changes in aquaporin expression on the growth of onion ( L.) plants when subjected to dual applications of microorganism-based soil amendments and foliar nanoencapsulated mineral nutrients. Multiple physiological parameters related to water, gas exchange, and nutrient content in leaf, root, and bulb tissues were determined.

Onion plants ( L.) react differently to salinity levels according to the regulation of aquaporins.

As salinity is one of the main environmental stresses that reduces the growth and productivity of crops by reducing water uptake and transport, in this work, we associated the physiological tolerance response of onion to increased NaCl concentration (from 25, 50, 75, to 100 mM) with the expression of aquaporins. Measurements of transpiration, gas exchange and nutrients content in leaf, roots and bulb tissues were determined in relation to the expression of PIP2, PIP1, and TIP2 aquaporin genes. The results indicated a significant decrease in growth in leaves, roots and bulbs only when 50 mM NaCl was applied.