ISOLATION OF A SULFATE REDUCTASE-LESS MUTANT OF BLUE-GREEN-ALGA NOSTOC-MUSCORUM
ISOLATION OF A SULFATE REDUCTASE-LESS MUTANT OF BLUE-GREEN-ALGA NOSTOC-MUSCORUM
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DOI：
10.1002/jobm.3630180205
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发表时间：
1978-01-01
期刊：
影响因子：
--
通讯作者：
SINGH, SP
中科院分区：
文献类型：
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作者：
SINGH, SP
用N-甲基，N′-硝基-N-亚硝基胍（NTG）诱变野生型念珠藻（Nostoc muscorum，UW株），产生了多种生理突变体，改变了其对硫酸盐的利用。其中一株命名为Sat-20的突变菌株在含有硫酸盐（MgSO 4· 7 H2O）的培养基中无法生长。然而，突变株可以生长时，补充硫代硫酸盐（Na 2S 2 O3· 5 H2O），而蛋氨酸只能满足部分的硫需求。基于比较的原因，野生型以及突变体显示出对硫代硫酸盐的偏好超过所采用的其他硫源。
The wild typeNostoc muscorum(UW strain) has yielded various physiological mutants altered in utilization of sulphate, following mutagenic treatments with N‐methyl, N′‐nitro N‐nitrosoguanidine (NTG). One of the mutant strains designated as Sat‐20 failed to grow in a medium containing sulphate (MgSO4· 7 H2O). However, the mutant strain could grow when supplemented with thiosulphate (Na2S2O3· 5 H2O), while methionine could fulfil the sulphur requirement only partially. On comparative reasons, the wild type as well as the mutant showed preference for thiosulphate over other sulphur sources employed.