GALACTOLIPASE ACTIVITY AND FREE FATTY-ACID LEVELS IN CHLOROPLASTS OF DOMESTIC AND WILD TOMATOES WITH DIFFERENT CHILLING TOLERANCE

被引:17
作者
GEMEL, J [1 ]
SACZYNSKA, V [1 ]
KANIUGA, Z [1 ]
机构
[1] UNIV WARSAW, INST BIOCHEM, AL ZWIRKI & WIGURY 93, PL-02089 WARSAW, POLAND
关键词
D O I
10.1111/j.1399-3054.1988.tb02011.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
In order to establish differences in the chilling sensitivity of domestic and wild Lycopersicon species, galactolipase (EC 3.1.1.26) activity, free fatty acid (FFA) level and Hill reaction activity were measured in chloroplasts isolated from control and cold treated leaves of L. esculentum Mill., cv. Norton, L. hirsutum Humb. and Bonpl., L. peruvianum var. glandulosum Mill. Galactolipase activity was higher in chloroplasts from Lycopersicon species with high chilling sensitivity than in chloroplasts of more chilling-resistant ones. A similar relationship was observed for FFA level in chloroplasts both cold-stored and control leaves. Decrease in Hill reaction activity due to cold stress was greater in chloroplasts of more chilling-sensitive species. The changes are accompanied by a decline of photochemical activity. Considering the changes in the three parameters noted above, an increasing order of chilling tolerance was established: L. esculentum < L. hirsutum (700 m) < L. hirsutum (3100 m) < L. peruvianum (3400 m). It is suggested that measurements of galactolipase activity and FFA may be useful in an evaluation of differences in resistance to chilling injury of closely related species.
引用
收藏
页码:509 / 514
页数:6
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