作　　者： ; ; ; ; ;

机构地区： 云南烟草科学研究院

出　　处： 《热带亚热带植物学报》 2003年第3期241-244,共4页

摘　　要： 低温胁迫下水稻幼苗质膜透性增大、相对含水量(RWC)下降、丙二醛(MDA)含量增加,同时脯氨酸(Pro)积累。以氯丙嗪(CPZ)和氯化镧(LaCl3)对水稻幼苗预处理以阻碍Ca2+·CaM(钙调素)信使传导后,加剧了低温胁迫下水稻幼苗质膜透性的增加、RWC的下降、MDA含量的增加和Pro的积累,说明水稻幼苗受伤害程度将加重。 The roots of 13-day-old rice seedlings were pretreated with 50 μmol/L chlorpromazine or 500 μmol/L lanthanum chloride (LaCl3) at 25℃ for 15 h to determine the changes in relative water content (RWC), malondialdehyde (MDA) content, relative permeability of cell membrane, and proline (Pro) accumulation in the seedlings under cold stress at 6-7℃ and light intensity at 200 μmol m-2s-1. The experiments showed that the RWC decreased, relative permeability of cell membrane and MDA content increased, meanwhile, the proline was accumulated under cold stress. Such trends were enhanced significantly in the seedlings pretreated with chlorpromazine or LaCl3 under cold stress.

关 键 词： 水稻幼苗 氯丙嗪 氯化镧 脯氨酸 低温胁迫

领　　域： [生物学]