不同桑品种在干旱胁迫下脯氨酸及可溶性蛋白质含量的变化规律研究  

Effects of Drought Stress on Free Proline and Soluble Protein Content of Different Mulberry Varieties

作　　者：祁伟亮 冯鸿 刘松青 陈洁 龚壁燃 夏杰 张莉 任迎虹 

机构地区：[1]成都师范学院化学与生命科学学院,四川成都611130

出　　处：《中国野生植物资源》2017年第5期34-36,39,共4页Chinese Wild Plant Resources

基　　金：四川省教育厅创新团队资助项目(15TD0036)

摘　　要：渗透调节是高等植物抵抗逆境胁迫的一种重要方式。本研究以6个四川主栽的桑树品种作为研究材料,探讨在不同程度的干旱胁迫下,脯氨酸和可溶性蛋白质含量的变化。结果表明,在干旱胁迫下桑树叶片中游离脯氨酸含量变化呈上升趋势,可溶性蛋白的变化呈下降趋势,可以推测出脯氨酸含量变化与可溶性蛋白动态变化呈负相关。其中,湖桑32号和九龙拐的脯氨酸含量变化最大,而其可溶性蛋白质含量变化幅度最小,表明该品种的抗旱性最强。可以推测脯氨酸的大量积累可能与可溶性蛋白的分解有关。Osmotic regulation is the important physiological mechanism for plants to adapt to drought-adversity.Under the drought stress environment,we used six mulberry varieties in Sichuan as the research object to discuse the change rule of contents of free proline and soluble protein.The results have shown that the changes of free proline content was negatively correlated with soluble protein.The free proline level of Husang 32 and Jiu Long Guai under drought stress had significant changes,while the soluble protein had no significant changes.It can be speculated that the accumulation of free proline is related to the decomposition of soluble protein.

关 键 词：脯氨酸 可溶性蛋白 干旱胁迫 桑树 

分 类 号：S888.2[农业科学—特种经济动物饲养]