Work

The tale of two Ions Na+ and Cl−: unraveling onion plant responses to varying salt treatments

Year: 2024

Type: article

Abstract: Background Exploring the adaptive responses of onions (Allium cepa L.) to salinity reveals a critical challenge for this salt-sensitive crop. While previous studies have concentrated on the effects of sodium (Na+), this research highlights the substantial yet less-explored impact of chloride (Cl−) accumulation. Two onion varieties were subjected to treatments with different sodium and chloride containing salts to observe early metabolic responses without causing toxicity.Results The concentrations of both ions were increased; with Cl− exhibiting a more pronounced effect on metabolic profiles than Na+. Onions adapt to salinity by altering organic acid concentrations, which are critical for essential functions such as energy production and stress response. The landrace Birnförmige exhibited more effective regulation of its Na+/K+ balance and a milder response to Cl− compared to the hybrid Hytech. Metabolic alterations were analyzed using advanced techniques, revealing specific responses in leaves and bulbs to Cl− and Na+ accumulation.Conclusion The comprehensive study provides new insights into onion ion regulation and stress adaptation, emphasizing the importance of considering both ions, Na+ and Cl− when assessing plant responses to salinity.

Source: BMC Plant Biology

DOI: 10.1186/s12870-024-05719-9

Authors: M. L. Romo-Pérez, C. H. Weinert, B. Egert, S. E. Kulling, C. Zörb

Institutions: University of Hohenheim, Max Rubner Institut

Language: English

Topic: Plant Stress Responses and Tolerance

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $2,990