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

ABSTRACT: 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. However, this was not correlated with the rest of the parameters, such as transpiration, number of stomata, osmotic potential, or chlorophyll concentration. In this way, the finding tha

SUBMITTER: Solouki A 

PROVIDER: S-EPMC9988491 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature