Saltiness potentiation in white bread by substituting sodium chloride with a fermented soy ingredient     

Luis A. Jimenez-Maroto  Takuya Sato  Scott A. Rankin 《Journal of Cereal Science》2013

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Impact of a 5-year winter cover crop rotational system on the molecular diversity of arbuscular mycorrhizal fungi colonizing roots of subsequent soybean     

Masao Higo  Katsunori Isobe  Rhae A. Drijber  Takuya Kondo  Moe Yamaguchi  Saki Takeyama  Yasuhito Suzuki  Daisuke Niijima  Yukiya Matsuda  Ryuichi Ishii  Yoichi Torigoe 《Biology and Fertility of Soils》2014,50(6):913-926

The impact of winter cover crops, specifically wheat (Triticum aestivum L.), red clover (Trifolium pratense L.), and rapeseed (Brassica napus L.) or winter fallow, on community composition of arbuscular mycorrhizal fungi (AMF) in subsequent soybean roots was investigated in a 5-year field trial on andosolic soils in Japan. Soybean roots were sampled at full-flowering and analyzed for AMF communities using a partial LSU rDNA region. Phylogenetic analysis detected 22 AMF phylotypes, including eight Glomus, three Gigaspora, two Scutellospora, three Acaulospora, two Rhizophagus, and one of Funneliformis, Diversispora, Paraglomus, and an unknown glomeromycete in the roots. The 5-year rotation of different winter cover crops or winter fallow did not impact the molecular diversity of AMF communities colonizing the roots of subsequent soybean. In all of the rotations, Glomus and Gigaspora phylotypes were common to soybean roots over the 5-year period. Redundancy analysis (RDA) demonstrated that AMF communities in the roots of subsequent soybean were not significantly different among winter cover crop rotations or fallow. However, AMF communities in soybean roots were clearly influenced by rotation year suggesting that climate or other environmental factors were more important than winter cover cropping system management.  相似文献   

Synchronization of cellular clocks in the suprachiasmatic nucleus     

Yamaguchi S  Isejima H  Matsuo T  Okura R  Yagita K  Kobayashi M  Okamura H 《Science (New York, N.Y.)》2003,302(5649):1408-1412

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Modified phases of diamond formed under shock compression and rapid quenching     

Hirai H  Kondo K 《Science (New York, N.Y.)》1991,253(5021):772-774

Two modified forms of carbon were quenched by a rapid-cooling technique from graphite sheets shock-compressed to 65 gigapascals and 3700 K. One form, ;;n-diamond," which was obtained from the most rapidly cooled part, has a crystal structure close to that of cubic diamond. The other form, found in the relatively slow-cooled part, was comparable to an i-carbon prepared by an ion-beam technique. The n-diamond is interpreted as a metastable form, the same as hexagonal diamond, converted from graphite through a martensitic transition, for which either the region or the path may be different from that of hexagonal diamond. The second form was found to be produced through reconstruction.  相似文献   

The Selaginella genome identifies genetic changes associated with the evolution of vascular plants     

Banks JA  Nishiyama T  Hasebe M  Bowman JL  Gribskov M  dePamphilis C  Albert VA  Aono N  Aoyama T  Ambrose BA  Ashton NW  Axtell MJ  Barker E  Barker MS  Bennetzen JL  Bonawitz ND  Chapple C  Cheng C  Correa LG  Dacre M  DeBarry J  Dreyer I  Elias M  Engstrom EM  Estelle M  Feng L  Finet C  Floyd SK  Frommer WB  Fujita T  Gramzow L  Gutensohn M  Harholt J  Hattori M  Heyl A  Hirai T  Hiwatashi Y  Ishikawa M  Iwata M  Karol KG  Koehler B  Kolukisaoglu U  Kubo M  Kurata T  Lalonde S  Li K  Li Y  Litt A  Lyons E  Manning G  Maruyama T  Michael TP 《Science (New York, N.Y.)》2011,332(6032):960-963

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A novel putative tyrosine kinase receptor encoded by the eph gene   总被引：48，自引：0，他引：48  

H Hirai  Y Maru  K Hagiwara  J Nishida  F Takaku 《Science (New York, N.Y.)》1987,238(4834):1717-1720

Growth factors and their receptors are involved in the regulation of cell proliferation and also play a key role in oncogenesis. In this study, a novel putative kinase receptor gene, termed eph, has been identified and characterized by molecular cloning. Its primary structure is similar to that of tyrosine kinase receptors thus far cloned and includes a cysteine-rich region in the extracellular domain. However, other features of the sequence distinguish the eph gene product from known receptors with tyrosine kinase activity. Thus the eph protein may define a new class of these molecules. The eph gene is overexpressed in several human carcinomas, suggesting that this gene may be involved in the neoplastic process of some tumors.  相似文献   

Synthesis and possible function of 11-ketotestosterone during oogenesis in eel (Anguilla spp.)     

M. Matsubara  P.M. Lokman  A. Senaha  Y. Kazeto  S. Ijiri  A. Kambegawa  T. Hirai  G. Young  T. Todo  S. Adachi  K. Yamauchi 《Fish physiology and biochemistry》2003,28(1-4):353-354

The control of 11-ketotestosterone (11-KT) biosynthesis and its physiological roles were examined in female Japanese eel (Anguilla japonica) and New Zealand longfinned eel (Anguilla dieffenbachii). 11-KT was detected in serum of female eels of both species. Among various tissues from Japanese eel, the ovary had the greatest capacity to synthesize 11-KT in vitro. In addition, the oocyte diameters of eels treated with 11-KT had increased significantly. Furthermore, these oocytes were found to have an increased number of oil droplets. These findings suggest that 11-KT in female eels may be mostly of ovarian origin and that this androgen appears to play an important role in controlling pre-vitellogenic oocyte growth.  相似文献   

Gonadotropins, gonadotropin receptors and their expressions during sexual maturation in yellowtail, a carangid fish     

M.A. Rahman  K. Ohta  A. Yamaguchi  H. Chuda  T. Hirai  M. Matsuyama 《Fish physiology and biochemistry》2003,28(1-4):81-83

To study the physiological roles of gonadotropins (GtHs) in the yellowtail, the cDNAs encoding each GtH subunit (GPHα, FSHβ and LHβ) and their receptors (FSHR and LHR) were isolated from the pituitary gland and gonads using the polymerase chain reaction (PCR). In addition, thyrotropin (TSH) and its receptor (TSHR) cDNAs, were isolated from the pituitary gland, ovary and testis. The changes in the mRNA levels of each subunit were determined at different stages of maturation. The isolated cDNAs of GPHα, FSHβ, LHβ and TSHβ were 662, 545, 595 and 879 bp long, respectively. The amino acid sequence identity of the yellowtail GPHα, FSHβ, LHβ and TSHβ subunits was 85–63, 68–33, 93–65 and 74–46%, respectively, as compared with other fish species. Northern blot analysis showed that GPHα and FSHβ were strongly expressed in pituitary at the early vitellogenic stage and during spermatogenesis, whereas LHβ was expressed significantly in the late vitellogenic stage, and in both spermatogenesis and spermiation. Full-length cDNAs encoding FSHR, LHR, and TSHR were obtained from the testes and ovaries. The FSHR, LHR and TSHR cDNA encoded a protein of 680, 702 and 778 amino acids, and showed the highest identity with tilapia FSHR (76%), tilapia LHR (84%) and striped bass TSHR (94%), respectively. Northern blot analyses indicated that all of these receptors are expressed differently at different stages in the ovaries and testes.  相似文献   

Occurrence and distribution during the post-settlement stage of two Choerodon species in shallow waters around Ishigaki Island, southern Japan     

Hideaki Yamada  Atsushi Nanami  Itaru Ohta  Kouki Fukuoka  Taku Sato  Masato Kobayashi  Narisato Hirai  Masayuki Chimura  Yuichi Akita  Yuuki Kawabata 《Fisheries Science》2012,78(4):809-818

The recruitment patterns of black-spot tuskfish Choerodon schoenleinii were compared with those of orange-dotted tuskfish (OT) C. ancholago. Individuals at the settlement and juvenile stages were collected using a push net in the intertidal zone and a seine net in seagrass beds. Relative values of standard length to total length (TL) for the two Choerodon species indicated an inflection point at approximately 10?C20?mm TL, suggesting that both species complete metamorphosis at a similar size. However, their temporal and spatial occurrence patterns were distinct. Newly settled individuals (postflexion stage) of black-spot tuskfish were collected mainly within foliage of Sargassum plants of the intertidal zone around March?CApril, while those of OT occurred in both the intertidal zone and seagrass beds mainly in May and June. In seagrass beds, the abundances of both species increased from May or June; however, the TL of black-spot tuskfish was bigger than that of OT. Therefore, black-spot tuskfish progressively migrate to seagrass beds after settling and completing metamorphosis in the intertidal zone, indicating that they utilize two different habitats as nursery grounds. Early spawning and migration from the intertidal zone by this species contributed to the occurrence of relatively large individuals in seagrass beds.  相似文献