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排序方式: 共有74条查询结果,搜索用时 375 毫秒
1.
Hideki Takahashi Ayano Shimizu Tsutomu Arie Syofi Rosmalawati Sumire Fukushima Mari Kikuchi Yasufumi Hikichi Ayami Kanda Akiko Takahashi Akinori Kiba Kohei Ohnishi Yuki Ichinose Fumiko Taguchi Chihiro Yasuda Motoichiro Kodama Mayumi Egusa Chikara Masuta Hiroyuki Sawada Daisuke Shibata Koichi Hori Yuichiro Watanabe 《Journal of General Plant Pathology》2005,71(1):8-22
Lycopersicon esculentum cultivar Micro-Tom is a miniature tomato with many advantages for studies of the molecular biology and physiology of plants. To evaluate the suitability of Micro-Tom as a host plant for the study of pathogenesis, Micro-Tom plants were inoculated with 16 well-known fungal, bacterial, and viral pathogens of tomato. Athelia rolfsii, Botryotinia fuckeliana, Oidium sp., Phytophthora infestans, and Sclerotinia sclerotiorum caused typical symptoms and sporulated abundantly on Micro-Tom. Micro-Tom was resistant to Alternaria alternata, Corynespora cassiicola, and Fusarium oxysporum. When Micro-Tom was inoculated with 17 isolates of Ralstonia solanacearum, many isolates induced wilt symptoms. Agrobacterium tumefaciens also was pathogenic, causing crown galls on stem tissue after needle prick inoculation. In Micro-Tom sprayed with Pseudomonas syringae pv. tomato, P. s. pv. tabaci, or P. s. pv. glycinea, bacterial populations did not increase, and yellow lesions appeared only on leaves sprayed with P. s. pv. tomato. Tomato mosaic virus, Tomato aspermy virus, and Cucumber mosaic virus systemically infected Micro-Tom, which developed symptoms characteristic of other cultivars of tomato after infection with the respective virus. These results indicated that Micro-Tom was generally susceptible to most of the important tomato pathogens and developed typical symptoms, whereas certain pathogens were restricted by either hypersensitive resistance or nonhost resistance on Micro-Tom. Therefore, an assortment of Micro-Tom–pathogen systems should provide excellent models for studying the mechanism of susceptible and resistant interactions between plants and pathogens. 相似文献
2.
Yuki Ichinose Rena Shimizu Yoko Ikeda Fumiko Taguchi Mizuri Marutani Takafumi Mukaihara Yoshishige Inagaki Kazuhiro Toyoda Tomonori Shiraishi 《Journal of General Plant Pathology》2003,69(4):244-249
The flagellins purified from Pseudomonas syringae pv. tabaci induce a hypersensitive reaction in nonhost tomato cells. To investigate the role of flagella and flagellin in the compatible interaction, we generated two types of flagella-defective mutant. The fliC mutant lost the fliC gene that encodes flagellin protein, whereas the fliD mutant lost the fliD gene that encodes HAP2-capping protein. The two mutants had markedly reduced ability to cause disease symptoms in tobacco leaves. Furthermore, propagation of the mutants in tobacco leaves was less than that in wild-type pv. tabaci. Compared to the inoculation with wild-type pv. tabaci, inoculation with the two mutants did not markedly induce the expression of typical defense response-related genes such as PAL and hsr203J. Complementation of each fliC and fliD gene to the corresponding deficient mutant restored motility and virulence. These results indicate that flagella of P. syringae pv. tabaci are indispensable organelles for complete virulence on host tobacco plants. 相似文献
3.
Jie Liu Rumi Fujita Michiko Sato Kuniyoshi Shimizu Fumiko Konishi Kiyoshi Noda Shoichiro Kumamoto Chie Ueda Hisatoshi Tajiri Shuhei Kaneko Yoshitaro Suimi Ryuichiro Kondo 《Journal of Wood Science》2005,51(2):189-192
The inhibitory effects of 102 methanol extracts of 40 mycelia, 9 culture fluids, and 53 fruiting bodies of 40 strains of Ganoderma lucidum on 5-reductase were investigated. The methanol extract of the fruiting body of each strain was found to show the strongest 5-reductase inhibitory activity among the extracts tested. 相似文献
4.
Fumiko SUZUTA Kumiko KIMURA Ryo URAKAWA Yukio KUSUDA Shogo TANAKA Yasuko HANAFUSA Makoto HARITANI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(8):1029-1031
This report presents a new case of mucormycosis encountered in penguin characterized by morphological variation of hyphae and presence of sporangia with numerous sporangiospores. A 4.5-year-old Magellanic penguin (Spheniscus magellanicus) died after exhibiting anorexia, poor nutritional condition and dyspnea. Multiple nodular lesions were observed in the thoracic and abdominal regions. Histopathologically, hyphae of various sizes were seen in the lungs, air sac and nodular lesions. Myriad sporangiospores and several sporangia were observed in/around the bronchi or parabronchi. The very narrow and short hyphae in the nodules were not consistent with the characteristics of Mucorales. However, for most hyphae, including those in the nodules, sporangiospores and sporangia, immunohistochemistry revealed Mucorales-positive reactions. In addition, these fungi were identified as Rhizomucor pusillus by gene
analysis. 相似文献
5.
Noboru KUDO Chieko OTA Fumiko SAKA Yae IKEDA Yusuke TOMIHISA Yasunaga ITOI Takashi OYAMADA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(12):1651-1654
Seven laboratory mammal and
bird species were orally inoculated with 200–1,000 encysted Metagonimus
hakubaensis metacercariae that had been isolated from naturally infected
lampreys (Lethenteron reissneri) captured in Aomori Prefecture. At 8 and
15 days post-infection, adult flukes were recovered from all of the laboratory animals
tested, and therefore, hamster, rat, mouse, dog, cat, chicken and quail were considered as
final hosts of M. hakubaensis. Recovery rates of the fluke were higher in
dogs and hamsters than in cats, rats, mice, chickens and quails. The flukes recovered from
dogs and hamsters showed increased body length and higher fecundity than those recovered
from the other hosts. These results indicate that the suitability of dogs and hamsters for
M. hakubaensis infection is higher than that of the other laboratory
animals. 相似文献
6.
Establishment of a Model of Spontaneously-Running-Tokushima-Shikoku Rats with Left Atrial Thrombosis
Takamasa Ohnishi Fumiko Hisaoka Masaki Morishima Akira Takahashi Nagakatsu Harada Kazuaki Mawatari Hidekazu Arai Emiko Yoshioka Satomi Toda Izumi Keisuke Yutaka Nakaya 《Journal of toxicologic pathology》2014,27(1):51-56
Studies that investigate the underlying mechanisms of disease and treatment options typically require the use of a suitable animal model. Few suitable animal models exist for left atrial thrombosis. Here, we demonstrated that the Spontaneously-Running-Tokushima-Shikoku (SPORTS) rat — a Wistar strain known for its running ability—is predisposed to the development of thrombi in the left atrium. We investigated the incidence of left atrial thrombosis in male (n = 16) and female (n = 17) SPORTS rats and observed organized atrial thrombosis in 57% and 38% of males and female rats, respectively. In the male rats, systolic blood pressures and heart rates were significantly higher in SPORTS rats than in control Wistar rats. We could not find any evidence of arrhythmias, such as atrial fibrillation, during electrocardiographic examination of SPORTS rats. We believe that the SPORTS rat could serve as a new research model for left atrial thrombosis; further, it may be suitable for research investigating the development of new antithrombotic approaches for the control of atrial thrombosis or familial thrombophilia in humans. 相似文献
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9.
Hiromi Yokota Ikuyo Takamura Fumiko Ishikawa Miwako Ohta Shigeki Konishi 《Soil Science and Plant Nutrition》2013,59(2):457-461
It is well known that when inorganic elements such as boron (B), calcium, cobalt, and manganese are added to media in combination or alone, they stimulate the germination and/or tube growth of various kinds of pollen (Schmücker 1933; Loo and Hwang 1944; Yamada 1958; Brewbaker and Kwack 1963). Among these elements, the stimulatory effect ofB is the most effective and generally recognized. Aluminum (Al) belongs along with B to Group IIIa in the periodic table, and Fähnrich and Ultlich (1964) reported that Al inhibited the germination and growth of the pollen tube of Petunia hybrida and Antirrhinum majus. However, stimulatory effects of Al on pollen germination or pollen tube growth had not been previously reported. 相似文献