UNIQUE RESPONSE OF CYANOPHYCEAE TO COPPER

被引：25
作者：
TAKAMURA, N
KASAI, F
WATANABE, MM
机构：
[1] National Institute for Environmental Studies, Tsukuba, 305
来源：
JOURNAL OF APPLIED PHYCOLOGY | 1990年 / 2卷 / 04期
关键词：
HEAVY METAL; PHOTOSYNTHESIS; PERIPHYTON; TOLERANCE; CYANOPHYCEAE; GENETIC ADAPTATION;
D O I：
10.1007/BF02180917
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
A study was made of the tolerance to Cu of 11 strains of Cyanophyceae and 7 strains of eukaryotes. These had all been tested within 6 months after isolation for their photosynthetic activity when exposed to Cu (Takamura et al., 1989) and had repeatedly been subcultured in the medium without Cu for 2 years. Photosynthetic measurements were made in two ways: precultured in medium without Cu or precultured (for one subculture) in medium containing Cu (645-mu-g l-1). The results were compared with those obtained within 6 months of isolation. The tolerance of the eukaryotes did not change significantly in any case, but most strains of Cyanophyceae lost their tolerance to Cu within a few subcultures in medium without Cu; however tolerance recovered following one subculture in medium containing an intermediate level of Cu. This rapid adaptation cannot be explained by a constitutive mutation.
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页码：293 / 296
页数：4
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