Identification of cachexia-inducible Hop stunt viroid variants in citrus orchards in Japan using biological indexing and improved reverse transcription polymerase chain reaction     

Takao Ito  Takane Furuta  Tsutae Ito  Masahiro Isaka  Yoichi Ide  Junko Kaneyoshi 《Journal of General Plant Pathology》2006,72(6):378-382

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Notes on the occurrence of pathogenic races of Xanthomonas oryzae pv. oryzae found in Hiroshima Prefecture during 2000–2003     

Koji Tanaka  Sayaka Nakatsu  Zen-nosuke Katsuba  Hiroshi Furuya  Takao Tsuchiya  Takashi Oku 《Journal of General Plant Pathology》2005,71(2):144-146

The pathogenic races of 450 cultures of Xanthomonas oryzae pv. oryzae, isolated from eight locations in the inland mountainous area of Hiroshima Prefecture during 2000 to 2003, were determined with a set of Japanese differentials. The rice cultivars infected with the bacterium are thought to be in the Kinmaze group, which does not have any resistance genes. Five Japanese races IA, IB, II, V, and VII occurred across the area, although the composition of the races in each location altered during the surveyed 4 years.  相似文献   

Color development of proanthocyanidins in vanillin-hydrochloric acid reaction   总被引：1，自引：0，他引：1  

Tohru Mitsunaga  Takao Doi  Yuuki Kondo  Isao Abe 《Journal of Wood Science》1998,44(2):125-130

The influence of proanthocyanidin (PA) structures contained in bark on color development in the vanillin-hydrochloric acid (V-HCl) method used widely as a quantitative method for measuring PA were examined. The maximal absorption wavelength was different in terms of the bark from which the PA was obtained. Phenyl nucleus (resorcinol, phloroglucinol) constituting the A-ring of PA reacts with vanillin to produce the color. The maximal absorption wavelengths of the solutions from synthesized procyanidin and profisetinidin were 500 and 540 nm, respectively, indicating that the color tone differs in the V-HCl method based on the hydroxylation patterns of the A-ring. The colored solution of (+)-catechin with vanillin was dialyzed, and the resulting product (C-VC) was analyzed by gel permeation chromatography and ¹H nuclear magnetic resonance. It was found that C-VC was a polymer complex consisting of 9mol (+)-catechin moieties and 10mol vanillin moieties. It was presumed that the cationized vanillin molecules that do not combine with (+)-catechin play an important role on color development in the presence of C-VC.This study was presented at the 44th and 45th Annual Meetings of The Japan Wood Research Society, Nara and Tokyo, April 1994 and April 1995  相似文献   

Corrosive-wear characteristics of diamond-coated cemented carbide tools     

Takao Morita  Kaoru Banshoya  Takahiro Tsutsumoto  Yasuhide Murase 《Journal of Wood Science》1999,45(6):463-469

Continuous milling tests with diamond-coated and uncoated cemented carbide tools and polycrystalline diamond tools were carried out on air-dried and wet melapi (Shorea sp.) and western redcedar (Thuja plicata D. Don). These tools were examined for corrosive-wear characteristics of the tool-edge appearance, cutting-edge profile, edge recession, and cutting-power consumption. The tool surfaces were observed with a scanning electron microscope and were analyzed by energy-dispersive X-ray spectroscopy. Based on these examinations, the occurrence of corrosive wear while cutting wet woods was confirmed for the uncoated and polycrystalline diamond tools. In contrast, the coated tools did not exhibit corrosive wear, nor did delamitation or wear of the diamond film occur with any of the work materials. The diamond-coated tools showed high resistance not only to mechanical wear but also to corrosive wear.The results of this work were presented at the 48th annual meeting of the Japan Wood Research Society, Shizuoka, April 1998  相似文献   

Effect of salinity change and exposure time on the egg stages of two abalone species Haliotis discus discus and H. gigantea     

Manuel  Albert V.  Tu  Phan Thi Cam  Tsutsui  Naoaki  Yoshimatsu  Takao 《Fisheries Science》2020,86(1):27-33

Fisheries Science - The embryonic developmental response of two abalone species (disk abalone Haliotis discus discus, giant abalone Haliotis gigantea) to a drop in salinity with different exposure...  相似文献   

Impacts of short-term salinity and turbidity stress on the embryonic stage of red sea bream Pagrus major     

Phan  Thi Cam Tu  Manuel  Albert Valdish  Tsutsui  Naoaki  Yoshimatsu  Takao 《Fisheries Science》2020,86(1):119-125

Fisheries Science - Heavy rainfall can reduce salinity and increase turbidity in coastal waters, creating stressful conditions for the organisms found there, especially for the early stages of...  相似文献   

Complementary DNA cloning and functional analysis of lycopene β-cyclase in the brown alga Undaria pinnatifida     

Inoue  Akira  Iwayama  Toshiyuki  Ojima  Takao 《Fisheries Science》2019,85(4):717-729

Fisheries Science - To date, there is no functional evidence of the enzymes catalyzing carotenogenesis in brown algae. In this study, we have investigated the activity of brown algal lycopene...  相似文献   

Development of a culture protocol for Rhodomonas sp. Hf-1 strain through laboratory trials     

Yamamoto  Satoshi  Yamato  Reina  Aritaki  Yudai  Bossier  Peter  Yoshimatsu  Takao 《Fisheries Science》2019,85(4):695-703

Fisheries Science - Rhodomonas sp. Hf-1 is a marine microalgal strain with a high nutritional value. In order to produce this microalga effectively and inexpensively in a hatchery, its production...  相似文献   

Spatial and temporal variation in the distribution of juvenile southern bluefin tuna Thunnus maccoyii: implication for precise estimation of recruitment abundance indices     

Ko Fujioka  Ryo Kawabe  Alistair J. Hobday  Yoshimi Takao  Kazushi Miyashita  Osamu Sakai  Tomoyuki Itoh 《Fisheries Science》2010,76(3):403-410

Acoustic tags were used to examine the spatial and temporal distribution of southern bluefin tuna (SBT) in southern Western Australia, which is in a region where fishery-independent acoustic surveys of the recruitment abundance index of SBT have been historically undertaken. We investigated patterns of SBT distribution within and inshore of the acoustic survey area during three summer seasons. Annual differences in distribution patterns were characterized by two distinctive migration pathways. An inshore-migrating pathway was observed in two seasons (2004/2005 and 2006/2007), with a relatively high proportion of tagged SBT (84.5, 65.0%) migrating inshore of the acoustic survey area. The other pathway was concentrated along the shelf (2005/2006 season), with an estimated 63.3% of tagged SBT moving within the survey area. These variable migration patterns may bias the interannual fluctuations in abundance indices. Current survey methods can be modified to include both inshore and continental shelf areas. This contribution shows that the accuracy of acoustic surveys can be improved by including ecological patterns.  相似文献   

Genetic diversity and a heterogeneous population of Citrus mosaic virus within a single citrus tree     

Takao Ito  Tsutae Ito  Hiroshi Shiotani  Toru Iwanami  Katsumi Ozaki  Kazuyuki Muramoto 《Journal of General Plant Pathology》2007,73(2):147-151

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