[Analysis of dominant-recessive mutated character of nfr genes of Chlamydomonas reinhardtii and its mutual interaction with the chloroplastic psbA gene].
Phenotypic analysis of the nfr/Nfr diplontic hybrids has demonstrated the recessive mutated character of the nfr genes, and the norflurazon resistant character of the Nfr-4 And Nfr-5 mutants were resulted in by the different nuclear genes nfr-1 and nfr-2 respectively. From the tetrad analysis result of hybridizations of psbA mutant with wild strains CC-124 and nfr mutant, it have been demonstrated that the sensitivity of psbA mutated strain to norflurazon under photoautotrophic condition is due to its multiple effect whereas the chloroplast genome under the mixotrophic situation also gives some effect for resistance to norflurazon. From the titration results of cross-resistant character for antibiotics of norflurazon resistant strains, we had found that, the Nfr-3 mutant has some cross-resistance to erythromycin and streptomycin; based on this phenomenon it would be expected that this mutant having resistant character to suppressor of phytoene desaturase also give some effect for construction of chloroplastic protein.
Mijit
G
G
College of Life Science and Technology, Xinjiang University, Urumqi 830046, China. gmijit2001@yahoo.com.cn
Zayadan
B K
BK
Rahman
E
E
Chunaev
A S
AS
D000818:Animals; D016825:Chlamydomonas reinhardtii / Q000187:drug effects* / Q000235:genetics*; D002736:Chloroplasts / Q000235:genetics*; D004351:Drug Resistance / Q000235:genetics*; D009154:Mutation / Q000235:genetics*; D045332:Photosystem II Protein Complex / Q000235:genetics*; D011724:Pyridazines / Q000494:pharmacology*
D045332:Photosystem II Protein Complex; D011724:Pyridazines; C008677:norflurazone