摘要
用不同浓度的NaCl处理泌盐盐生植物二色补血草幼苗,15天后测定叶片色素组分的变化。结果发现:随着处理盐浓度的升高,叶黄素脱环化程度(DPS)逐渐升高,表明依赖于叶黄素循环的能量耗散在盐胁迫下能起到有效的保护作用。Car、Anth的相对含量随着盐度增加逐渐上升,其中Car的相对含量在不同盐度下较对照均显著上升。在400 mmol·L-1 NaCl处理下Anth%较对照上升显著。表明在二色补血草光保护的过程中,活性氧清除系统起着相当重要的作用,活性氧非酶系统含量的升高是其适应盐渍环境不可忽视的原因之一。
Seedlings of typical salt - secretion halophyte Limonium bicolor were treated with different concentrations of NaCl. After 15 days, the leaves pigment components were determined. The results showed that the de - epoxidation content of xanthophyll cycle （DPS） increased gradually with increase of salt treatment, especially increased remarkably under higher concentration. It is obvions that xanthophyll cycle under salt stress has the efficient role of protecting. The relative contents of Car and Anth gradually improved with the increase of salt concentration, in which the Car content increased distinctly under different salt concentrations compared with the control.The relative content of Anth showed its significant increase under 400 mmol ·L^-1 NaCl. The data suggested that the reactive oxygen species in L. bicolor played a great role in photoprotection under salt stress, meanwhile the content of non - enzymic system in ROS scavenging improves to adapt to NaCl stress.
出处
《山东商业职业技术学院学报》
2014年第3期121-124,共4页
Journal of Shandong Institute of Commerce and Technology
关键词
二色补血草
盐胁迫
色素
光保护
Limonium biolor
salt stress
photoprotection
pigment
