Ca^(2+)胁迫下伞花木和华山松脯氨酸及可溶性蛋白质含量的变化

Variation of Proline and Soluble Protein Content in Leaves of Eurycorymbus cavalerieian and Pinus armandii under Ca^(2+) Stress

为了解伞花木和华山松对Ca2+的适应性,筛选贵州喀斯特生境下(土壤含钙较高)适生植物奠定基础,对不同浓度Ca2+胁迫下伞花木和华山松叶片脯氨酸和可溶性蛋白质含量变化进行了检测。结果表明:在Ca2+胁迫下伞花木脯氨酸含量明显增多,而华山松脯氨酸含量变化不大;低浓度的钙可以增加伞花木和华山松可溶性蛋白的含量,高浓度钙处理下伞花木和华山松可溶性蛋白质含量都下降,但华山松可溶性蛋白质含量比伞花木的低。说明,伞花木比华山松更能适应贵州高钙的喀斯特环境。

The proline and soluble protein content in leaves of Eurycorymbus cavalerieian and Pinus armandii planted under different Ca2＋ stress were determined to study the adaptability to select suitable plants in Karst habitat of Guizhou province.The results showed that the proline content in leaves of Eurycorymbus cavalerieian increased obviously under Ca2＋ stress,the praline content in leaves of Pinus armandii had no obvious change,the low concentration of Ca2＋ could increase soluble protein content in leaves of Eurycorymbus cavalerieian and Pinus armandii,and the high concentration of Ca2＋ could decrease soluble protein content in leaves of Eurycorymbus cavalerieian and Pinus armandii but the protein content in leaves of Pinus armandii was lower than that of Eurycorymbus cavalerieian,which indicated that Eurycorymbus cavalerieian has higher adaptability to Karst habitat than Pinus armandii.