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151.
Lipid contents and fatty acid compositions were compared among 110 muscle samples of Japanese wild, Japanese cultured, and
Chinese cultured ocellate puffer Takifugu rubripes. The effects of diet on muscle lipids in cultured ocellate puffer were also investigated. There was no noticeable difference
between the wild and cultured fish with regard to the lipid content, but there were significant differences in the fatty acid
composition ratio such as C16:0, C16:1n-7, and C20:4n-6. Moreover, the percentages of the fatty acids C18:2n-6 and C22:5n-3
were correlated with those in the diet. These results suggest that the muscle lipid content was not affected by diet, whereas
fatty acid composition was affected. There were significant differences in fatty acid composition among Japanese wild fish,
Japanese cultured fish, and Chinese cultured fish. The results suggest that the fatty acid composition is applicable as a
tool to distinguish between wild and cultured ocellate puffer as well as those cultured in Japan and China. 相似文献
152.
Takeshi?Nagasaki Norihisa?Osada Mika?Sato Seiichi?Yasuda Koetsu?Takahashi Takanori?ImaiEmail author 《Journal of Wood Science》2004,50(1):82-86
The reactivity of previously prepared antiserum against agatharesinol, a norlignan, was determined by competitive inhibition–ELISA (enzyme-linked immunosorbent assay) using several natural compounds that are representative of plant extractives as competitive inhibitors. The antiserum strongly reacted with some norlignans (i.e., agatharesinol, hinokiresinol, and metasequirin C), each of which has a common chemical-structural unit. This result suggests that the antiserum recognizes the specific chemical-structural unit composing those norlignans. Moreover, differences in the reactivities of the antiserum with agatharesinol derivatives and synthetic chalcones propose the trans-3-p-hydroxyphenyl-1-phenylpropene structural unit as the major antigenic determinant for the antiserum.Part of this paper was presented at the 45th Lignin Symposium, Matsuyama, October 2000 and the 51th Annual Meeting of the Japan Wood Research Society, Tokyo, April 2001 相似文献
153.
Leang Hak Khun Shuhei Miyaji Keiji Motomura Seiichi Murayama Shinichi Adaniya Akihiro Nose 《Euphytica》2006,151(2):235-241
A near isogenic line, T65-LH7 bred from a rice variety, Ketan Nangka by five times of successive backcrossing with Taichung 65 (T65) as recurrent parent was found to carry a recessive lateness gene tentatively designated as ef6(t). The present study was performed to investigate the allelic relationships between ef6(t) and other heading time genes, Ef1, Efx, ef2(t), ef3(t), ef4(t) and ef5 by allelism test and to locate the chromosomal location of ef6(t) by trisomic analysis. In allelism test, six testers carrying each of heading time genes, Ef1, Efx, ef2(t), ef3(t), ef4(t) and ef5 were used. Those testers were the near isogenic lines of T65. T65-LH7 was crossed with respective testers. Heading times in F2 and/or B1F1 plants were examined. All F2 and/or B1F1 populations derived from those crosses exhibited digenic segregations, respectively. These results suggested that ef6(t) was independent of Ef1, Efx, ef2(t), ef3(t), ef4(t) and ef5. Sub sequently, trisomic analysis of ef6(t) was performed using seven Triplo lines having extra chromosomes, 2, 4, 5, 7, 9, 10 and 12. These Triplo lines were the near isogenic lines of T65. They were used as maternal parent to cross with T65-LH7. Heading times in F2 plants obtained from self-pollination of F1 plants were observed. Among F2 plants examined only those derived from a cross between Triplo-7 and T65-LH7 showed a typical trisomic segregation manner, suggesting that ef6(t) was located on chromosome 7. Consequently, the nomenclature of the present gene should be designated as ef6. 相似文献
154.
Cryopreservation of shoot tips of Chrysanthemum morifolium and related species native to Japan 总被引:1,自引:0,他引:1
Summary The shoot tips of Chrysanthemum morifolium (syn. Dendranthema grandiflorum) and related species native to Japan were cryopreserved using preculture for 2 days, slow cooling (0.2°C/min) until –40°C with 10% dimethyl sulphoxide and 3% glucose prior to immersion into LN2 and rapid thawing. High survival rates were observed in 3 cultivars of chrysanthemum, 12 species and 2 interspecific hybrids, and slightly low survival rates in 3 species. The shoot regeneration rates of the frozen shoot tips varied from 9.4 to 100% depending on species. Shoot tips of chrysanthemum showed high viability even after a storage of 8 months in LN2. The thawed chrysanthemum shoot tips grew and flowered normally in a greenhouse under natural conditions.Abbreviations BA
6-benzylaminopurine
- DMSO
dimethyl sulphoxide
- NAA
1-naphtalenacetic acid 相似文献
155.
Togashi K Mawatari T Mitobe S Moriya S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(7):941-944
From April to July 2009, there was a high rate of reproductive losses in a 30-sow, farrow-to-finish swine herd in Yamagata Prefecture, Japan. Histopathological examinations of heart tissue from stillborn and preweaning piglets showed nonsuppurative, necrotizing lesions. Immunohistochemical staining and polymerase chain reaction analysis of myocardial lesions revealed the presence of porcine circovirus type 2 (PCV2) antigens and DNA in these tissues. Indirect immunofluorescence also showed that the PCV2 antibody positive rate in the sows was higher in May 2009 than in December 2008. The results of this study suggest that PCV2 spread to this farm and caused a high rate of reproductive losses. 相似文献
156.
157.
158.
159.
Seiichi Sasaki 《Soil Science and Plant Nutrition》2013,59(1):7-8
Japanese acid earth was discovered about fifty years ago, in Niigata Prefecture. The properties of this earth resemble those of Fuller's Earth showing distinct acid reaction; it is believed that it consists of montmorillonite or beidellite.1, 2, 3) The author took samples from lmai, Niigata Prefecture and studied the chemical properties and clay mineral composition of the acid earth. The soil profile of the spot where the samples were taken is shown in Fig. 1. It consists of 12 layers, but the top 7 layers are alluvial deposits unconformably covering the acid earth. The lower earth deposits are divided into 5 layers viz., G1 G2 , H1, H2 and the parent rock P. This mother rock is estimated to be liparitic tuff or glassy liparite by microscopic and macroscopic investigation. 相似文献
160.
Yusuke Hagiwara Takashi Osono Seiichi Ohta Agus Wicaksono Arisman Hardjono 《Journal of Forest Research》2012,17(1):51-57
Colonization of leaf litter by ligninolytic fungi and relationships between mass loss and chemical qualities of surface leaf
litter were examined in Acacia mangium plantations and adjacent secondary forests in southern Sumatra Island, Indonesia. Leaves were collected from eight A. mangium plantations of different ages and three secondary forests. Partly decomposed leaves beneath the surface leaf litter were
used to measure the bleached area which indicated colonization by ligninolytic fungi. Surface leaf litter was used to measure
initial chemical content and subjected to the pure culture decomposition test. The bleached area was greater in secondary
forests than in A. mangium plantations. Nitrogen content was higher in all the A. mangium plantations than in the secondary forests, and acid unhydrolyzable residue (AUR) content was generally higher in the A. mangium plantations than in the secondary forests. The bleached area of leaf litter was negatively correlated with nitrogen content
of surface leaf litter at all sites, indicating an inhibition of the colonization by ligninolytic fungi of leaves with higher
nitrogen content. In a pure culture decomposition test inoculating a ligninolytic fungus to surface leaf litter, mass loss
of leaves was negatively correlated with AUR content of surface leaf litter. Mass loss of leaves and AUR was not significantly
related to nitrogen content. These results suggested that higher nitrogen content in A. mangium leaf litter had a negative effect by colonization of ligninolytic fungi, but the effect of high N in A. mangium leaf litter on the decomposition of leaf litter and AUR remained unsolved. 相似文献