著者

大西 近江 西本 登志

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.63, no.1, pp.51-66, 1988-02

著者

大西 近江

出版者

日本遺伝学会

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.68, no.4, pp.303-316, 1993-08-25

参考文献数

28

被引用文献数

4 20

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Allozyme variability at 19 loci affecting 12 enzymes was analyzed electrophoretically in 21 populations from Europe and six populations from the silk road. Most of the populations were polymorphic at seven loci, <i>Dia-2</i>, <i>Got-2</i>, <i>Mdh-1</i>, <i>Mdh-3</i>, <i>Pgm-1</i>, <i>Pgm-2</i> and <i>Sdh-1</i>. As compared with Chinese populations, European populations have completely lost variability at <i>Adh</i> and <i>6-Pgdh-1.</i> Populations from southern Europe have less variability than those from other parts of Europe. They have lost variability at <i>Pgm-2</i> and have a greatly reduced frequency of the F allele at <i>Mdh-1</i>; occasionally, however, they show an increase in the frequency of the U allele at the <i>Got-2 </i>locus. Southern European populations show an increase in the <i>det</i> allele and in grey colored varieties. As a group, European populations show the smallest genetic distance with populations from the silk road and northern China. Combining these genetic findings with written documents and archeological evidence, I conclude that European buckwheat came from northern China via the silk road, and that it changed in many respects within the last 500 years.<br>

著者

鈴木 仁 HOSODA Tetsuji SAKURAI Susumu TSUCHIYA Kimiyuki MUNECHIKA Isao KORABLEV Vladimir P.

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.69, no.4, pp.397-406, 1994-08-25

被引用文献数

7 10

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We analyzed the restriction fragment length polymorphisms in the spacer regions of ribosomal DNA (rDNA), using twelve restriction enzymes, to examine whether the Iriomote cat is related to the leopard cat (<i>Felis bengalensis</i>). A restriction map for each taxon was constructed and the major taxon-specific types of repeating unit (repetypes) were characterized on the basis of the arrangements of restriction sites. The Iriomote cat and the leopard cat share a common repetype but this repetype is different from that of the domestic cat (<i>F. catus</i>) with an estimated sequence divergence of 1.5% and from that of the ocelot (<i>F. paradalis</i>) with an estimated sequence divergence of 2.5%. These results indicate that, phylogenetically, the Iriomote cat is closely related to the leopard cat and that the ancestral population moved from the continent to Iriomote Island quite recently. The rDNA arrays of the leopard cat exhibit considerable intragenomic size-variation, which is thought to have emerged as a result of differences in numbers of repeated DNA segments, whereas the extent of such size-variation is much lower in the rDNA of the Iriomote cat. It appears that, even though migration of the Iriomote cat occurred relatively recently, the population has diverged to some extent from its continental counterpart, perhaps via fixation of preexistent intraspecific variations rather than by generation of new variations.<br>

著者

市川 定夫 今井 敏彦 中野 篤

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.66, no.4, pp.513-525, 1991-08

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Induced somatic pink mutation frequencies in the stamen hairs of Tradescantia KU 20 clone, a blue/pink heterozygote highly mutable spontaneously at lower temperature, were studied after treating with relatively small doses of Co-60 gamma rays (39 to 551 mGy or 3.9 to 55.1 rad), and were compared with those of two stable clones (non-mutable spontaneously), BNL 02 and KU 9, which are also blue/pink heterozygotes. It was found that the gamma-ray-induced mutation frequency in KU 20 clone was comparable (18.8 pink mutant events per 10(4) hair-cell divisions per Gy) to those in BNL 02 (12.2 and 21.2) and KU 9 (17.4) clones, when the spontaneous mutation frequencies of KU 20 clone were relatively low (at most about 5.7 and 2.3 times of BNL 02 and KU 9 clones, respectively). However, when the spontaneous mutation frequecies of KU 20 clone were much higher (up to about 65 and 27 times of BNL 02 and KU 9 clones, respectively), induced mutation frequency was significantly higher in KU 20 clone (58.8 pink mutant events per 10(4) hair-cell divisions per Gy) than in BNL 02 and KU 9 clones. The extent of increase in the gamma-ray-induced mutation frequency in the latter case was nevertheless very much less than the increase in the spontaneous mutation frequency, suggesting different mechanisms of initiation and repair of radiation-induced and spontaneous mutations.

著者

小原 良孝

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.60, no.2, pp.157-160, 1985-04

著者

古川 貴久 小早川 義尚 田村 公実子 木村 賢一 川市 正史 谷村 禎一 本庶 佑

出版者

日本遺伝学会

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.70, no.4, pp.505-524, 1995-08-25

参考文献数

63

被引用文献数

1

著者

市川 定夫 山口 明彦 奥村 幹子

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.68, no.4, pp.277-292, 1993-08-25

参考文献数

25

被引用文献数

11 23

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Young inflorescences of <i>Tradescantia</i> clones KU 27 and BNL 4430, the both of which are blue/pink heterozygotes and have been demonstrated to be highly sensitive to alkylating agents, were exposed either to aqueous solutions of methyl methanesulfonate (MMS) for 16hr alone (at 0.005 to 0.02% for KU 27 and at 0.005% for BNL 4430) or to acute 150 kVp X rays alone (161 to 531 mGy for KU 27 and 501 to 976 mGy for BNL 4430), or in combinations (134 to 448 mGy for KU 27 and 458 to 865mGy for BNL 4430 after the 0.005% MMS treatment). The induced somatic pink mutation frequencies per hair-cell division were studied and compared, and clone BNL 4430 was found to be nearly two times more sensitive to MMS than clone KU 27, while the X-ray-induced mutation frequencies in the latter was about 1.5 times higher than those in the former. The lower sensitivity to MMS of clone KU 27 (as compared with BNL 4430) was nevertheless about 5.6 times higher as compared with the responses of clone BNL 02 to MMS reported earlier, proving the high sensitivities of the two clones used in the present study. Clear synergistic effects of MMS and X rays were observed in the both clones, indicating that the mechanisms of inducing mutations are common at least in part between MMS and X rays.<br>

著者

執行 正義 田代 洋丞 宮崎 貞巳

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.69, no.4, pp.417-424, 1994-08-25

被引用文献数

14 21

---

The chromosomal locations of glutamate oxaloacetate transaminase gene loci in Japanese bunching onion (<i>Allium fistulosum</i> L., 2<i>n</i>=2X= 16, FF) and shallot (<i>A. cepa</i> L. Aggregatum group, 2<i>n</i>=2X = l6, AA) were investigated using alien monosomic addition lines (2<i>n</i>=2X+1=17, FF+nA, AA+nF) and hypoallotriploid lines (2<i>n</i>=3X-1=23, AFF-nA, AAF-nF) between these two species. The gene locus <i>Got-2</i> was located on the homoeologous sub-telocentric chromosomes, 6F in <i>A. fistulosum</i> and 6A in <i>A. cepa</i> Aggregatum group. The gene locus <i>Got-1</i> was on the other chromosomes. The present results indicate that chromosomal locations of these gene loci, at least <i>Got-2</i>, were conservative both in <i>A. fistulosum</i> and <i>A. cepa</i> Aggregatum group during speciation and subsequent evolution.<br>

著者

執行 正義 田代 洋丞 宮崎 貞巳

出版者

日本遺伝学会

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.69, no.4, pp.417-424, 1994-08-25

参考文献数

23

被引用文献数

14 21

---

The chromosomal locations of glutamate oxaloacetate transaminase gene loci in Japanese bunching onion (<i>Allium fistulosum</i> L., 2<i>n</i>=2X= 16, FF) and shallot (<i>A. cepa</i> L. Aggregatum group, 2<i>n</i>=2X = l6, AA) were investigated using alien monosomic addition lines (2<i>n</i>=2X+1=17, FF+nA, AA+nF) and hypoallotriploid lines (2<i>n</i>=3X-1=23, AFF-nA, AAF-nF) between these two species. The gene locus <i>Got-2</i> was located on the homoeologous sub-telocentric chromosomes, 6F in <i>A. fistulosum</i> and 6A in <i>A. cepa</i> Aggregatum group. The gene locus <i>Got-1</i> was on the other chromosomes. The present results indicate that chromosomal locations of these gene loci, at least <i>Got-2</i>, were conservative both in <i>A. fistulosum</i> and <i>A. cepa</i> Aggregatum group during speciation and subsequent evolution.<br>

著者

木村 澄 OKUMURA Takashi NINAKI Osamu KIDWELL Margaret G. SUZUKI Koichi

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.68, no.1, pp.63-71, 1993-02-25

参考文献数

26

被引用文献数

8 6

---

As a first step in surveying transposable elements in silkworms and honeybees, hybridization analyses were carried out using 16 known families of <i>Drosophila</i> transposable elements as probes, <i>jockey</i> and <i>G</i> were the only transposable elements that hybridized with genomic DNA of either honeybees or silkworms under the conditions of this study, <i>jockey</i> hybridized with genomic DNA of both European honeybees (<i>Apis mellifera</i>) and silkworms (<i>Bombyx mori</i> and <i>Antheraea yamamai</i>) and showed significant bands in Southern blots. Banding patterns were highly polymorphic, <i>jockey</i> did not, however, hybridize with any strains of the Asian honeybee (<i>A. cerana</i>). <i>G</i> elements showed a faint signal with the Asian honeybee, but not with any other insects tested. The results suggest that, even though it has some limitations, this approach can be used in practice as a first preliminary step in surveys for the presence of transposable elements in organisms which do not have good genetic information.<br>

著者

鄭 明基 姜 順淑

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.70, no.3, pp.387-398, 1995-06-25

被引用文献数

3

著者

大西 近江 長久保 有之

出版者

Genetics Society of Japan

雑誌

The Japanese journal of genetics (ISSN:0021504X)

巻号頁・発行日

vol.57, no.6, pp.641-650, 1982-12 (Released:2011-12-08)