盐胁迫对不同生境铺地黍叶片蛋白质合成的影响

Effect of Salt Stress on the Pattern of Protein Synthesis in Leaves of Panicum repens from Different Habitats

SDS聚丙烯酰胺凝胶电泳分析表明 ,不同生境铺地黍叶片中蛋白质的合成有所不同 .海滩植株中 30 .6、73.5和 96 .5k D蛋白质的合成增强 ,而在水湿地植株中 ,39.1、6 8.5和 130 k D蛋白含量较高 .移栽后的植株在 50～ 4 0 0 mmol/ L Na Cl胁迫下 ,原生长于海滩的铺地黍中 30 .6、73.5和 96 .5k D蛋白质的含量随盐度的增加而增加 ;原生长于水湿地的铺地黍中 39.1、6 8.5和 130 k D蛋白质的合成降低 ,但 30 .6 k D的蛋白质被诱导合成 .30 .6 k D的蛋白质可能与铺地黍的盐适应过程有关 .

The protein synthesis in leaves of Panicum repens grown in different conditions was investigated by SDS- polyacrylamide gel electrophoresis. In Panicum repens grown naturally in sandy beach,the contentof30 .6 ,73.5 and96 .5 k D polypeptides was high,and under 5 0～ 40 0 mmol/L Na Cl stress,their syntheses remained in high level. In Panicum repens grown naturally in water marsh,the content of39.1 ,6 8.5 and1 30 k D polypeptides was high,and under Na Cl stress,the three proteins decreased somewhat,but the30 .6 k D polypeptide was enhanced along with salinity increase. The 30 .6 k D protein may be related to salt acclimation of Panicum repens.