典型盐生植物北美海蓬子耐盐机理研究进展

Research Progress on Tolerance Mechanisms of Typical Halophytic Vegetation of Salicornia Bigelovii Torr

北美海蓬子是典型的一年生稀盐盐生植物,在滨海盐碱地开发利用中发挥着重要作用.在对国内外相关文献进行归纳分析的基础上,从种子对盐碱化土壤的生理适应性、成株形态对高盐环境的适应性、细胞水平上的渗透调节机制、维护质膜系统完整性的活性氧清除机制、离子胁迫下的Na+的外排和区域化机制等方面,对典型盐生植物北美海蓬子的耐盐机理进行综述,并对其在黄河三角洲地区的开发利用进行了展望.

Salicornia Bigelovii Torr,which is typical annual Halophytic vegetation with characteris- tics of salt-dilution, plays an important role in the development and utilization of coastal saline soil. Based on the analyses of domestic and foreign literature, this paper reviews the research progress of the salt-tol- erant mechanisms of Salicornia Bigelovii Torr, including the adaptive physiology of the seed to soil salinization, plant adaptive structure changes to high salt environment,osmotic adjustment mechanism on the cellular level, reactive oxygen specie scavenging mechanism to maintain the integrity of plasma mem- brane,exocytosis of Na＋ and compartmentalization tolerance mechanisms under salt ion stress, etc. The paper points out the development and utilization prospects of the Salicornia Bigelovii Tort in the Yellow River delta.