摘要
胡杨(Populus euphratica)是唯一能在中国西北部半干旱地区存活和形成森林的高大乔木树种,对干旱、盐碱、低温等逆境有较强的耐受力。本研究以胡杨愈伤组织作为材料,检测了胡杨愈伤组织在低温锻炼过程中抗寒性、可溶性蛋白含量、脯氨酸含量以及SOD、CAT、POD活性的变化。结果显示低温锻炼(2℃)不仅提高了胡杨愈伤组织的抗寒性及脯氨酸、可溶性蛋白的含量,且增强了SOD、CAT等抗氧化酶的活性。
Populus euphratica olivea is the only arbor species which can survive and form forest in seml-arid areas in Northwest China and is famous for its high tolerance against the adverse conditions such as drought, salt and low temperature. Populus euphratiaca calli were induced from plantlets used as the material in this study. The changes in the freezing resistance , the contents of soluble protein and proline, the activities of SOD, CAT and POD were determined in the calli of Populus euphratica during cold acclimation. The results showed that cold acclimation （2℃） not only increased the freezing resistance, the contents of proline and soluble protein, but also enhanced the activities of SOD and CAT , whereas the activity of POD decreased.
出处
《山东农业科学》
2007年第3期46-49,共4页
Shandong Agricultural Sciences
基金
国家自然科学基金项目:沙冬青低温诱导基因与抗寒性形成机制研究(30671476)
关键词
胡杨
低温锻炼
抗寒性
可溶性蛋白
脯氨酸
抗氧化酶
Populus euphratica
Cold acclimation
Freezing resistance
Soluble protein
Proline Antioxidant enzyme
