The rates of Hill reaction and contents of MDA in chloroplast of wheat seedling under salinity stress or treated by ·O - 2 , which was produced by the system of xanthine and xanthine oxidase were studied. Th...The rates of Hill reaction and contents of MDA in chloroplast of wheat seedling under salinity stress or treated by ·O - 2 , which was produced by the system of xanthine and xanthine oxidase were studied. The results show that ·O - 2 can destroy structure and function of chloroplast, and cerium protects those of the cell organelle by cleaning ·O - 2 . The higher the concentration of cerium is, the stronger the protective effects of cerium is on chloroplast treated by ·O - 2 in the condition of the certain lower concentration of cerium. The function of cerium is as the same as SOD in scavenging ·O - 2 , and the effective time of protective effect is longer. This effect is more important as chloroplast is in photostage.展开更多
文摘The rates of Hill reaction and contents of MDA in chloroplast of wheat seedling under salinity stress or treated by ·O - 2 , which was produced by the system of xanthine and xanthine oxidase were studied. The results show that ·O - 2 can destroy structure and function of chloroplast, and cerium protects those of the cell organelle by cleaning ·O - 2 . The higher the concentration of cerium is, the stronger the protective effects of cerium is on chloroplast treated by ·O - 2 in the condition of the certain lower concentration of cerium. The function of cerium is as the same as SOD in scavenging ·O - 2 , and the effective time of protective effect is longer. This effect is more important as chloroplast is in photostage.
