Integrated Physiological, Transcriptomic, and Proteomic Analyses Reveal Alkali Stress Response and Tolerance Mechanisms of Rhododendron obtusum ‘Fenzhuanglou’ Seedlings
Soil alkalization limits the cultivation of Rhododendron, an acidophilic ornamental genus, yet the alkali tolerance threshold of R. obtusum ‘Fenzhuanglou’ remains undefined. Seedlings were exposed for 40 d to mixed alkali (NaHCO3:Na2CO3 = 9:1; 0, 50, 60, and 70 mmol·L−1), combining physiological assays with RNA-seq and...