Farooq Umer, Rehman Ayesha, Ashraf Muhammad Arslan, Rasheed Rizwan, Shahid Mudassar, Ali Shafaqat, Sarker Pallab K
Department of Botany, Government College University Faisalabad, Faisalabad, Pakistan.
Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.
Plant Signal Behav. 2025 Dec;20(1):2480224. doi: 10.1080/15592324.2025.2480224. Epub 2025 Mar 25.
Taurine (TAR) intricately mediates a plethora of physiological processes. This investigation aimed to elucidate the impact of TAR (50, 100, 150, and 200 mg L) seed priming on redox homeostasis, glutathione metabolism, photosynthetic efficiency, osmotic adjustment and nutrient acquisition in pea plants subjected to 100 mm salinity of neutral (NaCl and NaSO) and alkaline (NaCO) salts. Salinity diminished growth, chlorophyll, and photosynthetic efficiency alongside a concurrent rise in reactive oxygen species (ROS), lipid peroxidation, and relative membrane permeability. Seed priming with 150 mg L TAR efficiently enhanced growth by reducing oxidative damage to plants under salinity. Taurine enhanced leaf relative water content through osmotic adjustment facilitated by the induced accumulation of proline, glycine betaine, soluble sugars, and total free amino acids. Taurine increased the levels of antioxidant compounds and the activities of enzymes, which assisted in the detoxification of ROS and methylglyoxal. Taurine maintained chlorophyll integrity and enhanced photosynthetic efficiency by alleviating oxidative stress. Taurine diminished Na content, which improved the acquisition of essential nutrients under the salinity of neutral and alkaline salts. The results suggest that TAR has a potential role in maintaining ion homeostasis, crucial for enhancing pea tolerance to salt stress.
牛磺酸（TAR）复杂地介导了众多生理过程。本研究旨在阐明在100 mM中性（NaCl和Na₂SO₄）和碱性（Na₂CO₃）盐胁迫下，50、100、150和200 mg/L牛磺酸种子引发对豌豆植株氧化还原稳态、谷胱甘肽代谢、光合效率、渗透调节和养分吸收的影响。盐胁迫降低了生长、叶绿素含量和光合效率，同时活性氧（ROS）、脂质过氧化和相对膜透性增加。150 mg/L牛磺酸种子引发通过减少盐胁迫下对植物的氧化损伤有效促进了生长。牛磺酸通过诱导脯氨酸、甘氨酸甜菜碱、可溶性糖和总游离氨基酸的积累促进渗透调节，从而提高叶片相对含水量。牛磺酸增加了抗氧化化合物的水平和酶的活性，有助于ROS和甲基乙二醛的解毒。牛磺酸通过减轻氧化应激维持叶绿素的完整性并提高光合效率。牛磺酸降低了Na含量，从而改善了中性和碱性盐胁迫下必需养分的吸收。结果表明，TAR在维持离子稳态方面具有潜在作用，这对于提高豌豆对盐胁迫的耐受性至关重要。
