• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Biotechnology >Effects of sand burial on the survival and physiology of three psammophytes of Northern China
【24h】

Effects of sand burial on the survival and physiology of three psammophytes of Northern China

机译：沙埋对中国北方三种沙生植物存活和生理的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Corispermum macrocarpum, Setaria viridis?and?Agriophyllum squarrosum?are dominant psammophytes with strong environmental adaptability in Horqin Sandy Land, a typical agro-pastoral ecotone with frequent and intense sand activity in Northern China. We studied the survival rates, activity of?antioxidant?enzyme(superoxide dismutase,?peroxidase?and?catalase),?content of?osmotic substances(soluble sugar,?soluble protein?and?proline), and extent of?lipid peroxidation?andmembrane permeability?of the three?psammophytes?under ten treatments of sand burial with different depths?to understand the effects of burial stress on survival and physiology of these species. The results show that?A. squarrosum?had?the strongestadaptability?to sand burial with?the?highest survival rate in all treatments except treatment C (buried to 3/4 of seedling height), compared to the other two species. The role of different enzymes varied among the?three psammophytes.?Peroxidase?plays a protective role in scavenging?reactive oxygen species?of all three psammophytes.Superoxide dismutase?and?catalase?are effective in?A. squarrosum?and?S. viridis,?C. macrocarpum?and?S. viridis, respectively. The?osmotic substances?also increased to keep?Malondialdehydeand?Relative electrolyte leakage?at a low level (except thesoluble protein content of?A. squarrosum?and?S. viridis). However, because?stressincreased consistently in this study due to the enhanced level of sand burial depth, theantioxidant enzyme system and?osmotic substances?were not able to repair the damage leading to death of the plants.
机译：科尔沁沙地是大荚果，狗尾草（Setaria viridis）和沙枣（Agriophyllum squarrosum），具有较强的环境适应性，是一种典型的旱生植物，是典型的农牧交错带，是中国北方频繁频繁的沙活动。我们研究了存活率，抗氧化剂酶（超氧化物歧化酶，过氧化物酶和过氧化氢酶）的活性，渗透物质（可溶性糖，可溶性蛋白和脯氨酸）的含量以及脂质过氧化的程度。在深度不同的十种埋葬方式下，对三种沙生植物进行了透湿性和膜通透性研究，以了解埋藏胁迫对这些物种的生存和生理的影响。结果表明？与其他两个品种相比，除C处理外（其他苗种埋葬高度为3/4），在所有处理中，鳞茎对沙葬的适应性最强，成活率最高。在三种沙生植物中，不同酶的作用各不相同。过氧化物酶在清除所有三种沙生植物的活性氧中起保护作用。超氧化物歧化酶和过氧化氢酶在A中有效。 squarrosum和？维里迪斯大果和S. viridis，分别。渗透物质也增加，以使丙二醛和“相对电解质渗漏”保持在较低水平（除了“ A. quarquarum”和“ S. viridis”的可溶性蛋白质含量之外）。但是，由于在研究中由于沙埋深度的增加而使压力持续增加，因此抗氧化酶系统和渗透物质无法修复导致植物死亡的损害。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号