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Registros recuperados: 33
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Accumulated amount and formation of phosphate in cultivated upland Low-humic Andisols through continuous application of inorganic fertilizers and cattle manure for 25-years OAK
谷, 昌幸; 溝田, 千尋; 八木, 哲生; 笛木, 伸彦; 田村, 元; 加藤, 拓; 小池, 正徳; TANI, Masayuki; KOIKE, Masanori.
本研究では,十勝地域の農耕地,とくに普通畑土壌における化学肥料の施用や堆肥の連用などの肥培管理が土壌へのリン酸の蓄積量と形態に及ぼす影響を明らかにすることを目的とした.そのために,化学肥料および堆肥を25年間連用した長期有機物連用圃場において採取した試料を用い,全リン酸含量および形態別リン酸含量を調べ,谷ら(2010)の結果に基づいて作土層における正味のリン酸蓄積量を推定した.また,同圃場における25年間にわたるリン酸の投入量と持出量からリン酸収支を算出し,上記の正味のリン酸蓄積量と比較した.
Palavras-chave: 堆肥連用; 化学肥料; リン酸蓄積; 形態別リン酸; 淡色黒ボク土.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4175
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Biological control of Verticillium black spot of Japanese radish using Bacillus spp. and genotypic differentiation of selected antifungal Bacillus strains with antibiotic marker OAK
Kawai, Ayako; Kusunoki, Kaori; Aiuchi, Daigo; Koike, Masanori; Tani, Masayuki; Kuramochi, Katsuhisa; 川井, 彩子; 楠木, 芳; 相内, 大吾; 小池, 正徳; 谷, 昌幸; 倉持, 勝久.
Bacillus species can form endospores and have broad-spectrum activity of their antibiotics. For that reason, they offer several advantages over other bacteria for protection against root pathogens. This work was intended to determine the ability of Bacillus spp. to inhibit Verticillium dahliae. First, antagonistic activities of Bacillus spp. were studied in greenhouse trials. These results suggest that the bacterium can control soil-borne diseases. Secondly, to investigate the situation in a culture environment, Bacillus spp. were examined for their activity to control Verticillium black spot of Japanese radish and plant-growth promotion rhizobacteria (PGPR) effects in a field. After 2 months, these bacteria reduced Verticillium black spot of Japanese...
Palavras-chave: Bacillus spp.; Biological control; Verticillium black spot of Japanese radish; Verticillium dahliae.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/97
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Effects of land use and long-term organic matter application on low-molecular-weight organic acids in an Andisol OAK
Takata, Yusuke; Tani, Masayuki; Kato, Taku; Koike, Masanori; 谷, 昌幸; 加藤, 拓; 小池, 正徳.
http://www.academicjournals.org/jssem/abstracts/abstracts/abstracts2011/25%20October/Takata%20et%20al.htm
Palavras-chave: Land use; Long-term organic matter application; Low-molecular-weight organic acids; Malic acid; Water-extractable organic carbon.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3578
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Effects of phytotoxic metabolites from Verticillium dahliae and ouabain on tissues and callus cultures from susceptible and resistant cultivars of tomato OAK
Murakami, Takanori; Koike, Masanori; Shimada, Tohru; 村上, 隆紀; 小池, 正徳; 嶋田, 徹.
Palavras-chave: Tomato; Verticillium dahliae; トマト.
Ano: 1996 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1345
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Evaluation of tomato resistance to Verticillium dahliae culture filtrate in tissue culture OAK
MURAKAMI, Takanori; KOIKE, Masanori; SHIMADA, Tohru; 村上, 隆紀; 小池, 正徳; 嶋田, 徹.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Culture filtrate; Tomato; Verticillium dahliae.
Ano: 1993 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3767
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In vitro におけるジャガイモ半身萎ちょう病抵抗性の評価 OAK
Koike, Masanori; Kozawa, Tohru; Okino, Kaori; Nagao, Hideyuki; Shimada, Tohru; 小池, 正徳; 小沢, 徹; 沖野, 香織; 長尾, 英幸; 嶋田, 徹.
Palavras-chave: Potato; Verticillium albo-atrum; ジャガイモ.
Ano: 1996 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1342
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Low-molecular-weight aliphatic carboxylic acids in soils incubated with decomposing forest litter OAK
Tani, Masayuki; Koike, Masanori; Kuramochi, Katsuhisa; Higashi, Teruo; 谷, 昌幸; 小池, 正徳; 倉持, 勝久; 東, 照雄.
The effects of the addition of decomposing forest litter, collected from Podzolic soil organic layers (Oi, Oe and Oa) and Brown Forest soil Oe layers, on the amounts and composition of low molecular weight aliphatic carboxylic acids (LACAs) in soils were investigated by incubation experiments for 4 weeks. The total amounts of LACAs were greater at the beginning of incubation (384 to 1155 μmol kg-1), but decreased abruptly after 1 week, becoming relatively stable for a period of 1 to 4 weeks (299 to 377 μmol kg-1). The average amounts (without 0 weeks) of LACAs, especially acetic acid and citric acid, in soils incubated with forest litter under moderately moist conditions, were smaller than in the blank soil. Larger amounts of LACAs, especially formic acid,...
Palavras-chave: Decomposing forest litter; Forest soils; Incubation experiment; Low-molecular-weight aliphatic carboxylicacid (LACA); Soil microflora.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/98
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Pathogenicity and its mode of action in different sedentary stages of Heterodera glycines (Tylenchida: Heteroderidae) by Verticillium lecanii hybrid strains OAK
SHINYA, Ryoji; AIUCHI, Daigo; KUSHIDA, Atsuhiko; TANI, Masayuki; KURAMOCHI, Katsuhisa; KOIKE, Masanori; 相内, 大吾; 谷, 昌幸; 倉持, 勝久; 小池, 正徳.
The current study was conducted to investigate the pathogenicity and its mode of action by Verticillium lecanii hybrid strains in different sedentary stages of Heterodera glycines. Three different sedentary stages (pale yellow female, yellow brown cyst, and dark brown cyst) of H. glycines were treated with V. lecanii and incubated for 3 weeks on water agar. After 3 weeks of incubation, eggs were investigated for the following parameters: (i) the infection frequencies of eggs, (ii) the number of eggs laid, and (iii) the number of mature and healthy eggs. Subsequently, the fecundity of H. glycines treated with V. lecanii was investigated in greater detail. Consequently, some strains had a greater ability to infect eggs and this significantly reduced the...
Palavras-chave: Soybean cyst nematode; Protoplast fusion; Fecundity; Egg laying; Biological control.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2849
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Pre-inoculation of cucumber roots with Verticillium lecanii (Lecanicillium muscarium) induces resistance to powdery mildew OAK
Hirano, Emiko; Koike, Masanori; Aiuchi, Daigo; Tani, Masayuki; 平野, 恵美子; 小池, 正徳; 相内, 大吾; 谷, 昌幸.
The ability of Verticillium lecanii (Lecanicillium muscarium; B-2) to induce host resistance and defense responses against subsequent challenge with cucumber powdery mildews was examined in a glasshouse. A root test showed that, after inoculation with V. lecanii blastspore on cucumber roots, induction of systemic resistance in those V. lecanii pre-inoculated plants engendered significantly fewer lesions and reduced disease severity compared with non-inoculated plants. Furthermore, in plants inoculated with V. lecanii blastspore on their roots, the fungi showed high colonizing ability on cucumber rhizoplane and inside root tissues. Nevertheless, activities of peroxidase (PO) and phenylalanine ammonia-lyase (PAL) increased slightly, but not significantly. In...
Palavras-chave: Induced resistance; Lecanicillium muscarium; Powdery Mildew; Verticillium lecanii.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2277
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Reclassification of Japanese Isolates of Verticillium lecanii to Lecanicillium spp OAK
小池, 正徳; 杉本, みどり; 相内, 大吾; 長尾, 英幸; 新谷, 良治; 谷, 昌幸; 倉持, 勝久.
Recently, Verticillium lecanii was transferred and subdivided into mainly Lecanicillium lecanii, L. muscarium, and L. longisporum according to morphological observations and PCR-RFLPs of ITS, mtDNA and β-tubulin. To clarify whether 65 isolates of V. lecanii of mainly Japanese isolates were identified as Lecanicillium spp., conidia size and the formation of secondary phialide formation were investigated under a light microscope, and DNA polymorphism in the j8-tubulin gene of V. lecanii was analyzed by PCR-RFLP. These results indicated that the examined isolates belonged to L. muscarium (60 isolates) and L. longisporum (4 isolates), except for one isolate which alone did not belong to both Lecanicillium spp.
Palavras-chave: Conidia size; Lecanicillium spp.; Secondaryphialide formation; Verticillium lecanii.
Ano: 2007 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2534
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Screening of Verticillium lecanii (Lecanicillium spp.) Hybrid Strains Based on Evaluation of Pathogenicity against Cotton Aphid and Greenhouse Whitefly, and Viability on the Leaf Surface OAK
相内, 大吾; 馬場, ゆき子; 稲見, 圭吾; 新屋, 良治; 谷, 昌幸; 倉持, 勝久; 堀江, 早弥佳; 小池, 正徳.
In a previous study, protoplast fusion was performed among 3 strains of the entomopathogenic fungi Verticillium lecanii, as a result of which 174 hybrid strains were obtained. The aim of the present study was to screen desirable hybrid strains that have a wide host range or durable effects. Initially, 43 hybrid strains were used in bioassays against the cotton aphid. Of these strains, 30 induced equal or higher mortality as compared to Vertalec (41.9%). Secondly, 50 hybrid strains were used in bioassays against the greenhouse whitefly. Of these strains, 37 exhibited an equal or higher infection rate as compared to that of Mycotal (36.2%). Finally, 50 hybrid strains were applied to cucumber leaves in order to test strain viability under low humidity...
Palavras-chave: Biological control; Lecanicillium spp; Protoplast fusion; Screening; Verticillium lecanii.
Ano: 2007 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2587
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The Effect of Inactivation of Verticillium dahliae and Fusarium oxyporum f. sp. melonis under Anaerobic Digestion OAK
瀧本, 淳徳; 小池, 正徳; 高橋, 潤一; 梅津, 一孝; KOIKE, Masanori; UMETSU, Kazutaka.
本研究は作物病原菌であるバーティシリウム菌とメロンつる割れ病菌のメタン発酵による死滅効果を明らかにすることを目的に発酵温度35℃と55℃で回分試験を行った。その結果, 微生物を90%死滅させるのに必要な時間T90は, バーティシリウム菌は35℃で7.7日, 55℃で0.6日となった。メロンつる割れ病菌は35℃で0.5日, 55℃では15分で死滅し, 共に55℃での死滅効果が高いことが明らかとなった。
Palavras-chave: バーティシリウム菌; メロンつる割れ病菌; 乳牛ふん尿; メタン発酵; T90.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4318
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Variation in growth at different temperatures and production and size of conidia in hybrid strains of Verticillium lecanii (Lecanicillium spp.) (Deuteromycotina: Hyphomycetes) OAK
AIUCHI, Daigo; BABA, Yukiko; INAMI, Keigo; SHINYA, Ryoji; TANI, Masayuki; KOIKE, Masanori; 相内, 大吾; 谷, 昌幸; 小池, 正徳.
In a previous study, we confirmed alterations in several fungal traits in hybrid strains of Verticillium lecanii generated via protoplast fusion. In the present study, we surveyed radial colony growth in different temperature regimes as well as conidia productivity and conidia size of hybrid strains of V. lecanii to elucidate the various primary fungal properties of these strains and to determine the correlation between these properties and virulence to insect pests. Minimum temperature thresholds for all tested strains (except Vertalec®) were below 5°C. Optimal temperatures for colony growth were 20–25°C. Colony growth at high temperature was good or poor depending on the genotype. Temperature and strain significantly affected colony growth. Conidial...
Palavras-chave: Lecanicillium spp; Phenotypic variation; Protoplast fusion; Temperature growth response; Verticillium lecanii.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2848
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Verticillium albo-atrum に対するジャガイモの植物体および細胞レベルにおける抵抗性反応 OAK
小池, 正徳.
Ano: 1993 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/521
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アルファルファとVerticillium albo-atrumの相互作用 : V. 菌培養濾液の細胞毒性成分に対するカルスのファイトアレキシン蓄積 OAK
KOIKE, Masanori; SAITO, Joh-ichi; SHIMADA, Tohru; 小池, 正徳; 齋藤, 譲一; 嶋田, 徹.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Alfalfa; Culture filtrate; Phytoalexin; Verticillium albo-actrum; アルファルファ; 培養濾液; ファイトアレキシン.
Ano: 1992 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3751
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アルファルファとVerticillium albo-atrumの相互作用 : VII. 菌体細胞壁成分に対して高いPO活性を示す細胞系統の選抜とその特性 OAK
KATSUMATA, Yukiyoshi; KOIKE, Masanori; AMEMIYA, Yoshimiki; SHIMADA, Tohru; 勝又, 亨祥; 小池, 正徳; 雨宮, 良幹; 嶋田, 徹.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Alfalfa; Cell wall components; In vitro selection; P eroxidase,; Verticillium albo-atrum.
Ano: 1993 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3766
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アルファルファのソマクローナル変異 : I. 再生当代(SC1)の圃場特性 OAK
小池, 正徳; 東野, 裕広; 田守, 隆浩; 嶋田, 徹; KOIKE, Masanori; HIGASHINO, Yasuhiro; TAMORI, Takahiro; SHIMADA, Tohru.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: アルファルファ; ソマクローナル変異; Alfalfa; Somaclonal variation.
Ano: 1992 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3749
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アルファルファのソマクローナル変異 : II. 再生後代(SC2)の圃場特性 OAK
小池, 正徳; 田守, 隆浩; 東野, 裕広; 嶋田, 徹; KOIKE, Masanori; TAMORI, Takahiro; HIGASHlNO, Yasuhiro; SHIMADA, Tohru.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: アルファルファ; ソマクローナル変異; Alfalfa; Somaclonal variation.
Ano: 1992 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3750
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エンドファイトとしての昆虫病原糸状菌 (特集:昆虫病原糸状菌研究の現状と展望) OAK
小池, 正徳; 相内, 大吾; KOIKE, Masanori; AIUCHI, Daigo.
https://www.jstage.jst.go.jp/article/konchubiotec/82/3/82_3_169/_article/-char/ja/
Ano: 2013 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3912
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ダイズシストセンチュウに対するVerticillium lecanii プロトプラスト融合株の微生物防除資材としての可能性:プロトプラスト融合は植物寄生性線虫の生物的防除において有用な手法と成り得るか? OAK
Shinya, Ryoji; Watanabe, Ai; Aiuchi, Daigo; Tani, Masayuki; Kuramochi, Katsuhisa; Kushida, Atsuhiko; Koike, Masanori; 新屋, 良治; 渡部, 愛; 相内, 大吾; 谷, 昌幸; 倉持, 勝久; 串田, 篤彦; 小池, 正徳.
Verticillium lecanii is a potentially useful biological control agent (BCA) for soybean cyst nematode (SCN), Heterodera glycines. The objective of this study was to screen hybrid strains of V. lecanii, derived from protoplast fusion, for effective control agents of SCN, and to investigate whether the protoplast fusion technique is an effective tool for development of nematode control agents. Three parental strains (Vertalec®, Mycotal®, and B-2) and their 162 hybrid strains were screened in greenhouse pot tests. Some of these hybrid strains suppressed damage on soybean plants and reduced the density of SCN in the soil. In particular, one hybrid strain, AaF42, was observed to reduce the nematode egg density by 93.2% as compared with the control. Furthermore,...
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4162
Registros recuperados: 33
Primeira ... 12 ... Última
 

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