Bicarbonate-Dependent Detoxification by Mitigating Ammonium-Induced Hypoxic Stress in Triticum aestivum Root.

ABSTRACT: Ammonium (NH₄⁺) toxicity is ubiquitous in plants. To investigate the underlying mechanisms of this toxicity and bicarbonate (HCO₃^-)-dependent alleviation, wheat plants were hydroponically cultivated in half-strength Hoagland nutrient solution containing 7.5 mM NO₃^- (CK), 7.5 mM NH₄⁺ (SA), or 7.5 mM NH₄⁺ + 3 mM HCO₃^- (AC). Transcriptomic analysis revealed that compared to CK, SA treatment at 48 h significantly upregulated the expression of genes encoding fermentation enzymes (pyruvate decarboxylase (PDC), alcohol dehydrogenase (ADH), and lactate dehydrogenase (LDH)) and oxygen consumption enzymes (respiratory burst oxidase homologs, dioxygenases, and alternativ

SUBMITTER: Liu X 

PROVIDER: S-EPMC10886950 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature