| Autor: |
Padhy, R. N., Singh, P. K. |
| Zdroj: |
Molecular and General Genetics MGG; January 1978, Vol. 162 Issue: 2 p203-211, 9p |
| Abstrakt: |
The short-trichome-forming, non-heterocystous and non-nitrogen-fixing (het- nif-) mutant of the nitrogen-fixing blue-green alga Nostoc muscorum was isolated by N-methyl-N'-nitro-N-nitrosoguanidine (NTG)-mutagenesis after penicillin enrichment technique and characterized. The mutant did not grow and fix nitrogen in combined-nitrogen-free medium while in nitrate-containing medium it grew well (‘K’=0.112/day, ‘G’=64.27 h), although its growth was comparatively poor than the parent alga (K=0.128/day; G=56.14 h). The mutant was stable and both the het- and nif- characters reverted to wild type (het+ nif+) with the reversion frequency of 2.62×10-7. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full text from SpringerLink