著者

田辺 圭子 井本 正哉 梅沢 一夫

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.70, 1996-03-05

著者

河田 照雄 北尾 知子 松元 圭太郎 杉本 悦郎 伏木 亨

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.69, 1995-07-05

著者

河岸 洋和

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.68, no.12, pp.1671-1677, 1994-12-01

被引用文献数

3 3

著者

佐竹 泰子 榊間 貴子 山沢 和子 加藤 宏治 山内 亮 上野 良光

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.62, no.3, 1988-03-15

著者

鈴木 健夫

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.61, no.1, pp.37-39, 1987-01-15

被引用文献数

2

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Abscisic acid (ABA) and ethephon at optimum concentrations (0.1,1ppm) promoted rooting of preformed primordia of Morus alba L.cv.Minamisakari hardwood stem sections (cuttings). At these same optimum concentrations, ethephon stimulated the onset of new shoot elongation, rooting and defoliation, whereas ABA delayed it. At 10ppm, ABA depressed new shoot elongation and defoliation greatly and at 50ppm, inhibited bud break completely. In contrast to this, 10ppm ethephon only slightly depressed new shoot elongation but markedly stimulated defoliation.

著者

田崎 弘之 児玉 久 藤森 嶺 大西 昭男

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.62, no.3, 1988-03-15

著者

Nagase Masahiro Alam M.Murshedul Tsushima Akiko YOSHIZAWA Takumi SAKATO Nobuo

出版者

社団法人日本農芸化学会

雑誌

Bioscience, biotechnology, and biochemistry (ISSN:09168451)

巻号頁・発行日

vol.65, no.8, pp.1741-1747, 2001-08-23

参考文献数

41

被引用文献数

2 49

---

The molecules participating in apoptosis induced by T-2 toxin in human leukemia HL-60 cells were investigated. The rank order of the potency of trichothecene mycotoxins to induce internucleosomal DNA fragmentation was found to be T-2, satratoxin G, roridin A >> diacetoxyscirpenol > baccharin B-5 > > nivalenol, deoxynivalenol, 3-acetyldeoxynivalenol, fusarenon-X, baccharin B-4 = vehicle control. Western blot analysis of caspase-3 in T-2-treated cells clearly indicated the appearance of its catalytically active fragment of 17-kDa. Increased caspase-3 activity was also detected by using a fluorogenic substrate, DEVD-AMC. Next, cells exposed to T-2 led to cleavage of PARP from its native 116-kDa form to the 85-kDa product. Moreover, DFF-45/ICAD were cleaved to give a 12.5-kDa fragment via T-2 treatment. T-2 caused the release of cytochrome c from mitochondria into the cytosol. Increased enzymic activity of caspase-9 on LEHD-AMC was shown. These data indicate that T-2-induced apoptosis involves activation of caspase-3 and DFF-40/CAD through cytosolic accumulation of cytochrome c along with caspase-9 activation.

著者

前川 道栄 今井 利宏 土屋 聡志 藤森 嶺 レアル バルター スアレス

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.69, 1995-07-05

著者

Akiyama Ryoko Sato Yoshihiro Kajiwara Susumu SHISHIDO Kazuo

出版者

社団法人日本農芸化学会

雑誌

Bioscience, biotechnology, and biochemistry (ISSN:09168451)

巻号頁・発行日

vol.66, no.10, pp.2183-2188, 2002-10-23

参考文献数

22

被引用文献数

7 16

---

Three cytochrome P450 genes, named Le. cyp1, Le. cyp2, and Le. cyp3, were isolated from the basidiomycete Lentinula edodes. Le. cyp1 and Le. cyp2 contained coding regions of 1500 bp and 1497 bp, respectively, but Le. cyp3 was found to be a defective gene. The deduced amino acid sequences of Le. CYP1 (CYP510A1, 500 amino acids) and Le. CYP2 (CYP510A3, 499 amino acids) were highly similar to each other (87% identical) and they had 32-33% identities to that of Coprinus cinereus P450 (CYP502) and 27-28% identities to those of two Aspergillus P450s (CYP64 family). Quantitative RT-PCR analysis of the transcripts of Le. cyp1 and Le. cyp2 genes in the course of fruiting-body development of L. edodes showed that the primordium seems to contain larger amounts of these transcripts. The transcript levels of both of these genes in the stipe of the premature fruiting body were higher than those in the whole pileus and gill tissue.

著者

Aoshima Hitoshi Hamamoto Koutaro

出版者

社団法人日本農芸化学会

雑誌

Bioscience, biotechnology, and biochemistry (ISSN:09168451)

巻号頁・発行日

vol.63, no.4, pp.743-748, 1999-04-23

参考文献数

28

被引用文献数

8 131

---

To study the effects of perfume and phytoncid on GABA_A receptors, ionotropic GABA_A receptors were expressed in Xenopus oocytes by injecting mRNAs that had been prepared from rat whole brain. Essential oil, perfume and such phytoncid as leaf alcohol, hinokitiol, pinene, eugenol, citronellol and citronellal potentiated the response in the presence of GABA at low concentrations (10 and 30 μM), possibly because they bound to the potentiation-site in GABA_A receptors and increased the affinity of GABA to the receptors. Since it is known that the potentiation of GABA_A receptors by benzodiazepine, barbiturate, steroids and anesthetics induces the anxiolytic, anticonvulsant and sedative activity or anesthetic effect, these results suggest the possibility that the intake of perfume or phytoncid through the lungs, the skin or the intestines modulates the neural transmission in the brain through ionotropic GABA_A receptors and changes the frame of the human mind, as alcohol or tobacco does.

著者

冨岡 典子 田中 かおり 内山 裕夫 矢木 修身 国府田 悦男

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.69, 1995-07-05

著者

Maruta Kazuhiko Nakada Tetsuya Kubota Michio Chaen Hiroto Sugimoto Toshiyuki Kurimoto Masashi Tsujisaka Yoshio

出版者

社団法人日本農芸化学会

雑誌

Bioscience, biotechnology, and biochemistry (ISSN:09168451)

巻号頁・発行日

vol.59, no.10, pp.1829-1834, 1995-10-23

被引用文献数

40 97

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A trehalose-producing bacterium, Arthrobacter sp. strain Q36, was isolated from soil. From a supernatant of the culture broth, two novel enzymes related to trehalose synthesis were partially purified by Sepabeads FP-DA column chromatography. One enzyme catalyzed the conversion of maltopentaose into maltotriosyl trehalose by intramolecular transglycosylation, showing it to be maltooligosyl trehalose synthase. The other hydrolyzed the product transferred by the former into maltotriose and trehalose specifically, showing it to be maltooligosyl trehalose trehalohydrolase. In addition to the bacterial strain isolated, several bacteria kept in our laboratory were found to produce these enzymes. The enzymatic system was proposed to be a novel biosynthesis of trehalose in bacteria involving the following reactions : maltodextrin→maltooligosyl trehalose, maltooligosyl trehalose→maltodextrin + trehalose. When these enzymes acted on amylose simultaneously, the trehalose in the reaction mixture reached more than 80% in content.

著者

高柳 勉 矢嶋 瑞夫 奥田 徹 松土 俊秀 横塚 弘毅

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.69, 1995-07-05

著者

小澤 哲夫

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.68, no.4, pp.837-839, 1994-04-01

著者

門多 真理子

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.62, no.3, 1988-03-15

著者

柴崎 剛 森 英朗 尾崎 明夫

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.69, 1995-07-05

著者

呉 少勇 平島 明法 江藤 守総

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.62, no.3, 1988-03-15

著者

柴崎 剛 森 英郎 尾崎 明夫

出版者

社団法人日本農芸化学会

雑誌

日本農藝化學會誌 (ISSN:00021407)

巻号頁・発行日

vol.70, 1996-03-05

著者

Kitao Satoshi Sekine Hiroshi

出版者

社団法人日本農芸化学会

雑誌

Bioscience, Biotechnology, and Biochemistry (ISSN:09168451)

巻号頁・発行日

vol.58, no.1, pp.38-42, 1994-01-23

被引用文献数

29 97

---

Transglycosylation from sucrose to phenolic and related compounds by sucrose phosphorylase (EC 2.4.1.7) from Leuconostoc mesenteroides was studied. The enzyme had a rather broad acceptor specificity and transferred glucosyl residue of sucrose to various acceptors such as hydroxybenzenes, hydroxybenzoic acids, benzyl alcohol, and hydroxybenzyl alcohols. The enzyme could transfer the glucosyl moiety of sucrose to phenolic OH groups and alcoholic (hydroxymethyl) OH groups, though not to carboxyl groups. The phenolic OH group was more effective than a hydroxymethyl group as the acceptor. Phenolic OH groups adjacent to hydroxyl, hydroxymethyl, or carboxyl groups had an increased effectiveness as acceptors. About 2.3g of the purified transfer product was obtained from 2.0g of hydroquinone. Its structure was identified as hydroquinone-O-α-D-glucopyranoside (α-arbutin) on the bases of the secondary ion mass spectrometry analysis, the component analysis of its enzymatic hydrolysates, and the carbon-13 nuclear magnetic resonance analysis. The browning resistance of α-arbutin to light irradiation was extremely increased compared to that of hydroquinone. The inhibitory activity on tyrosinase of α-arbutin was almost equal to that of arbutin.

著者

Kanda Tomomasa Akiyama Hiroshi Yanagida Akio TANABE Masayuki GODA Yukihiro TOYODA Masatake TESHIMA Reiko SAITO Yukio

出版者

社団法人日本農芸化学会

雑誌

Bioscience, biotechnology, and biochemistry (ISSN:09168451)

巻号頁・発行日

vol.62, no.7, pp.1284-1289, 1998-07-23

被引用文献数

37 134

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The anti-allergic activities of polyphenol fractions extracted from immature fruits of apple (Rosaceae, Malus sp.) were evaluated by in vitro assays. A crude apple polyphenol (CAP) fraction, which had been obtained from the juice of immature apples by reverse-phase column chromatography, was further purified by LH-20 column chromatography to obtain an apple condensed tannin (ACT) fraction consisting of linear oligomeric epicatechins from the dimer to pentadecamer. ACT strongly inhibited the release of histamine from rat basophilic leukemia (RBL-2H3) cells stimulated by the antigen-stimulation and from rat peritoneal mast cells stimulated by compound 48/80. The IC_<50> values for histamine release were 30 μg/ml and 25 μg/ml, respectively. ACT also inhibited hyaluronidase activity and the increase in intracellular free calcium concentration in RBL-2H3 cells stimulated with the antigen. These results suggest that ACT Affected early signal transduction including the calcium influx.