Metyltetraprole activity against plant pathogens with relatively rare cytochrome b haplotypes for azoxystrobin resistance     

Matsuzaki  Yuichi  Uda  Yukie  Harada  Toshiyuki  Iwahashi  Fukumatsu 《Journal of General Plant Pathology》2022,88(5):318-324

Journal of General Plant Pathology - Metyltetraprole is a novel quinone outside inhibitor (QoI) fungicide designed to avoid cross-resistance in cytochrome b G143A-harboring QoI-resistant...  相似文献   

Sulfonylurea-resistant biotypes of Monochoria vaginalis generate higher ultraweak photon emissions than the susceptible ones     

Hidehiro Inagaki  Toshiyuki Imaizumi  Guang-Xi Wang  Tohru Tominaga  Kimihiko Kato  Hiroyuki Iyozumi  Hideki Nukui 《Pesticide biochemistry and physiology》2009,95(3):117-120

All living organisms spontaneously generate ultraweak photon emissions, which originate from biochemical reactions in cells. Current research uses the ultraweak photon emission from organisms as a novel indicator in nondestructive analyses of an organisms living state. This study indicates that ultraweak photon emissions from Monochoria vaginalis are different between resistant biotypes (R) to sulfonylurea (SU) and susceptible biotypes (S). In SU-R biotypes, distinct increases in photon emissions were observed, but there was little increase in SU-S biotypes. In addition, photon emissions from the resistant biotypes of M. vaginalis were suppressed by treatment with P450 inhibitors. This suggests that cytochrome P450 monooxygenase, which plays a crucial role in the metabolic detoxification of SUs, could be associated with the generation of ultraweak photon emissions. Ultraweak photon emissions have a potential use in a novel diagnosis system as an indicator in a nondestructive testing of weeds resistant to SUs.  相似文献   

Asexual fungus <Emphasis Type="Italic">Verticillium dahliae</Emphasis> is potentially heterothallic     

Toshiyuki Usami  Mizuho Itoh  Yoshimiki Amemiya 《Journal of General Plant Pathology》2009,75(6):422-427

Verticillium dahliae, a soilborne plant pathogen, causes wilt disease in many important crops. We reported previously that the mating type gene MAT1-2-1 is spread to isolates of this asexual fungus. However, we did not determine whether V. dahliae is homothallic or heterothallic because the opposite mating type gene, MAT1-1-1, had not been identified. In the present study, we identified the MAT1-1-1 gene from an isolate lacking MAT1-2-1 and the mating type idiomorphs of V. dahliae. Each isolate we tested contained either the MAT1-1 or MAT1-2 idiomorph, indicating that the asexual fungus V. dahliae is potentially heterothallic.  相似文献   

Comparative study of the Nicotiana species with respect to water deficit tolerance during early growth     

Toshiyuki Komori  Patricia N. Myers  Shigehiro Yamada  Tomoaki Kubo  Hidemasa Imaseki 《Euphytica》2000,116(2):121-130

Sixty Nicotiana species were examined for tolerance against various osmotica for seed germination and seedling growth in vitro. The species showed a wide variety of tolerance, and based on the results of the in vitro tests, 31 species were selected and further evaluated for salt and drought tolerance in a glasshouse. The degrees of tolerance of germination among the 57 species toward NaCl were approximately related to those toward mannitol, indicating that the osmolarity plays a majorrole in seed germination. However, the responses during the seedling growth differed in NaCl and mannitol or drought, and there was no correlation between salt and drought tolerance. Based on the responses in vitro and in the glasshouse, N. paniculata and N. excelsior were selected as the salt tolerant species, and N. arentsii as the salt sensitive species. The degrees of accumulation of dry matter and of Na⁺ in the leaves were different in the two tolerant species; during NaCl treatment, N. paniculata and N. arentsii accumulated less dry matter relative to the control plants than N. excelsior, and N. paniculata accumulated more Na⁺ in its leaves than N. excelsior and N. arentsii. It is assumed that the two salt tolerant species have different mechanisms for tolerance to the salt. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Meteorological factors affecting seroconversion of Akabane disease in sentinel calves in the subtropical Okinawa Islands of Japan     

Hayama  Yoko  Yanase  Tohru  Suzuki  Moemi  Unten  Kazuhiko  Tomochi  Hisayuki  Kakehi  Mayu  Shono  Yukina  Yamamoto  Takehisa  Kobayashi  Sota  Murai  Kiyokazu  Tsutsui  Toshiyuki 《Tropical animal health and production》2018,50(1):209-215

Tropical Animal Health and Production - Akabane virus, the pathogen-causing Akabane disease, is an arthropod-borne virus (arbovirus) transmitted by the Culicoides biting midge. A nationwide...  相似文献   

Correction to: Precocious maturation in male tiger pufferfish Takifugu rubripes: genetics and endocrinology     

Yoshikawa  Sota  Chuda  Hisashi  Hamasaki  Masaomi  Kadomura  Kazushi  Yamada  Toshiyuki  Kikuchi  Kiyoshi  Hosoya  Sho 《Fisheries Science》2021,87(3):431-431

Fisheries Science - A correction to this paper has been published: https://doi.org/10.1007/s12562-021-01505-w  相似文献   

Correction to: Prevention of hypermelanosis by rearing Japanese flounder Paralichthys olivaceus in net‑lined tanks     

Mizutani  Koei  Yamada  Toshiyuki  Suzuki  Keita W.  Masuda  Reiji  Nakata  Kuniaki  Tagawa  Masatomo 《Fisheries Science》2021,87(3):429-429

Fisheries Science - A correction to this paper has been published: https://doi.org/10.1007/s12562-021-01504-x  相似文献   

Facile synthesis of rubiadin by microwave heating     

Toshiyuki Takano  Tomomi Kondo  Fumiaki Nakatsubo 《Journal of Wood Science》2006,52(1):90-92

Rubiadin (4) (1,3-dihydroxy-2-methylanthraquinone), which is one of the natural dyes from the roots of Rubiaceae, was synthesized from phthalic anhydride (1) and 2,6-dihydroxytoluene (3) by two reaction steps, that is, a Friedel-Crafts reaction with AlCl₃ and a cyclization with H₂SO₄/HBO₂. Microwave heating resulted in remarkable acceleration of the reaction rate in the first reaction, and had an effect in reducing the reaction time and increasing the yield of rubiadin (4) in the second reaction.  相似文献   

Effect of ozone treatment of wood on its liquefaction     

Masahiko Kobayashi  Toshiyuki Asano  Mikio Kajiyama  Bunichiro Tomita 《Journal of Wood Science》2005,51(4):348-356

The effects of ozone treatment were investigated to improve the process of liquefaction of wood with polyhydric alcohol solvents. The liquefied wood having a high wood to polyhydric alcohol ratio (W/P ratio) could be prepared by using the wood treated with ozone in the liquid phase. The liquefied wood with a W/P ratio of 2 : 1 had enough fluidity to act as a raw material for chemical products. To get some information about the effects of ozone treatment toward the wood components, cellulose powder and steamed lignin were treated with ozone and liquefied. In particular, ozone treatment in the liquid phase was found to be effective for wood and cellulose powder. On the other hand, steamed lignin self-condensed during liquefaction after treatment with ozone in the liquid phase. Thus, ozone treatment provided lignin with reactive functional groups, and caused the subsequent condensation reaction. Although lignin was converted to a more condensable structure by ozone treatment, the condensation reaction was found to be suppressed for wood during its liquefaction. The wood liquefied products displayed good solubilities in N,N-dimethyl formamide (DMF) even after treatments of long duration. It was suggested that one of the main effects of ozone treatment toward wood was the decomposition of cellulose.Part of this report was presented at the 53rd Annual Meeting of the Japan Wood Research Society, Fukuoka, April 2003  相似文献   

Two novel dicarboxylic Acid derivatives and a new dimeric hydrolyzable tannin from walnuts   总被引：1，自引：0，他引：1  

Ito H  Okuda T  Fukuda T  Hatano T  Yoshida T 《Journal of agricultural and food chemistry》2007,55(3):672-679

In addition to the 16 previously reported polyphenols including 3 new ellagitannins, 2 novel dicarboxylic acid derivatives, glansreginins A (1) and B (2), and a new dimeric hydrolyzable tannin, glansrin D (3), were isolated, together with 15 known compounds from walnuts, the seeds of Juglans regia. The structures of the new compounds were elucidated on the basis of 1D- and 2D-NMR analyses and chemical data. The antioxidant effect of these isolates was also evaluated by SOD-like and DPPH radical scavenging activities.  相似文献