作　　者： ; (等）;

机构地区： 中山大学生命科学学院

出　　处： 《植物生理学报（0257-4829)》 2001年第1期73-80,共8页

摘　　要： 甜菜 (BetavulgarisL .cv .Loke)种子的人工老化 (30℃ ,1 0 0 %RH)导致种子的干重、生活力和活力逐渐丧失 ,线粒体的呼吸速率、细胞色素c氧化酶和苹果酸脱氢酶的活性下降。线粒体蛋白质随着种子老化而显著变化 ,小分子量热休克蛋白(LMWHSP) 2 2从老化的 0d到 30d增加 ,然后从30d到 90d下降。可以认为甜菜种子人工老化过程中线粒体活性和LMWHSP 2 High temperature accelerated ageing (at 30℃ and 100% RH) of sugar beet ( Beta vulgaris L. cv. Loke) seeds resulted in gradual loss of dry weight, viability and vigour of seeds, and lowering of mitochondrial respiratory rate and activities of cytochrome c oxidase and malate dehydrogenase in mitochondria. Protein composition in mitochondria showed marked changes with ageing of seeds; low molecular weight heat shock protein (LMW HSP) 22 increased from 0 d to 30 d of ageing, and then decreased from 30 d to 90 d of ageing. It was found that changes in mitochondria activity and LMW HSP 22 content were closely correlated with seed vigour during accelerated ageing of sugar beet seeds.

关 键 词： 人工老化 甜菜 细胞色素 氧化酶 苹果酸脱氢酶 线粒体 小分子量热休克蛋白 呼吸速率 种子活力

领　　域： [农业科学] [生物学]