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Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (3): 653-670.doi: 10.16420/j.issn.0513-353x.2025-0133

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Effects of Saline-Alkali Treatment on Leaf Morphology,Physiology and Expression of Genes Related to Stress Signal in 16 Grapevine Cultivars

ZHU Chunmei, CHEN Yao, LIU Zhiyu, ZHAO Baolong, SUN Junli*()   

  1. The Key Laboratory of Special Fruits and Vegetables Cultivation Physiology and Germplasm Resources Utilization of the Xinjiang Production and Construction,Department of Horticulture,Faculty of Agriculture,Shihezi University,Shihezi,Xinjiang 832003,China
  • Received:2025-04-10 Revised:2025-11-19 Online:2026-03-25 Published:2026-03-20
  • Contact: SUN Junli

Abstract:

The changes in leaf morphology,physiology,and related gene expression were investigated in 16 grape cultivars(including characteristic local cultivars of Xinjiang)under combined saline-alkali stress(NaCl + Na2SO4 + NaHCO3,with a total Na+ concentration of 300 mmol · kg-1). Under saline-alkali stress,all 16 cultivars exhibited varying degrees of leaf injury and a consistent reduction in photosynthetic capacity;increases in the levels of Na+,malondialdehyde(MDA),proline,soluble proteins,and soluble sugar;and enhanced activities of the antioxidant enzymes,such as superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT). Through integrated analyses,including correlation,principal component,membership function,and cluster analyses,the salt-alkali tolerance of the cultivars was classified:high saline-alkali tolerance(Hotan Red,Munage,Rizamat);moderate saline-alkali tolerance (Xinyu,Manaizi,Victoria,Kashihare,Crimson Seedless,Zixiang Seedless,Miguang,Xiangfei,Shine Muscat,Kyoho,Flame Seedless);and saline-alkali sensitive(Sweet Sapphire,Yongyou 1). The expression levels of genes related to stress signaling were significantly up-regulated in the salt-alkali tolerant cultivars under saline-alkali stress.

Key words: grapevine, cultivar, saline-alkali stress, morphological changes, physiological responses, gene expression