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Induction Effect and Genetic Analysis of NG to Conchospores of Porphyra |
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| Authors: | Xu Pu SHEN Songdong FEI Xiugeng Zhang Xuecheng Zhu Jianyi |
| Institution: | 1. Institute of Oceanography, Chinese Academy of Sciences, Qingdao 266071 2. Life Sciences College, Suzhou University, Suzhou 215006 3. Marine Life Sciences College, Qingdao Ocean University, Qingdao 266003 4. Jiangsu Institute of Marine Fisheries, Nantong 226007 |
| Abstract: | The new spreading conchospores ot Porphyra yezoensis, P. haitanensis and P. katadai var. hemiphylla are induced by N-Methy-N'-Nitro-N-Nitrosoguanidine (NG), a strong mutagen to induce the mutant of chromatophore. It is showed that (1) no mutants have been investigated in all control group. (2)The conchospores of all the three species of Porphyra are easy to be induced by NG for they are in the stage of breeding, In the lowest dose (10 μ g/mL) of this experiment, the mutant rate of P. yezoensis is up to 57.9%, that of P. haitanensis 30.7% and that of P. katadai var. hemiphylla 51.7%. (3)The mutant rate can not increase obviously by increasing the reagent concentration or prolonging the induction time. Within the scope of experiment, the inducement effects of three species of Porphyra ar e much similar, and the mutant rate is near 50%. The optimum induction concentration of NG is 10 μ g/mL, and the optimum induction time is 30 minutes. |
| Keywords: | Porphyra Mutant of chromatophore conchospore N-Methy-N'-Nitro-NNitrosoguanidine (NG) Inducement |
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