排序方式: 共有16条查询结果,搜索用时 31 毫秒
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Kashiwagi T Wu B Iyota K Chen XH Tebayashi SI Kim CS 《Bioscience, biotechnology, and biochemistry》2007,71(4):966-970
(1S,6R)-2,7(14),10-bisabolatrien-1-ol-4-one and (+)-7(14),10-bisaboladien-1-ol-4-one were isolated and identified from Cryptomeria japonica as antifeedants against Locusta migratoria L. which is well known as a serious pest to cereals throughout the world. These compounds strongly inhibited the feeding of L. migratoria only when they were combined, but each compound alone did not show any activity. 相似文献
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Chieko Takaya Ayako Kosaka Kyouko Kohno Toshihisa Kusano Ken-Ichi Nakamura 《Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology》1995,112(4):727-732
Tetrahymena thermophila could still swim after incubation of the cell body at 40°C for 30 min, whereas Tetrahymena pyriformis did not show any motility after the treatment. Turbidity measurements revealed that axonemes of T. pyriformis lost ATP-dependent sliding activity by the heat treatment, whereas those of T. thermophilia still had the activity under the same conditions. In connection with this difference in susceptibility to high temperature, the biochemical characteristics of dyneins were compared between the two species of Tetrahymena. Axonemal dyneins from the two species had significant vanadate-sensitive ATPase activity even after the heat treatment. Native gel electrophoresis and the following two-dimensional electrophoresis showed that the outer arm dynein of T. thermophilia is more stable in maintaining native configuration than that of T. pyriformis against the heat treatment, although both treated dyneins keep three (α, β and γ) subunits. Analysis by peptide mapping demonstrated that β- and γ-subunits of the outer arm dynein are considerably different in amino acid sequences between the two species. These results imply that dynein of T. thermophilia changed their amino acid sequences and biochemical characteristics to adapt to high temperature. 相似文献
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Overexpression of an Arabidopsis thaliana galactinol synthase gene improves drought tolerance in transgenic rice and increased grain yield in the field 下载免费PDF全文
Michael Gomez Selvaraj Takuma Ishizaki Milton Valencia Satoshi Ogawa Beata Dedicova Takuya Ogata Kyouko Yoshiwara Kyonoshin Maruyama Miyako Kusano Kazuki Saito Fuminori Takahashi Kazuo Shinozaki Kazuo Nakashima Manabu Ishitani 《Plant biotechnology journal》2017,15(11):1465-1477
Drought stress has often caused significant decreases in crop production which could be associated with global warming. Enhancing drought tolerance without a grain yield penalty has been a great challenge in crop improvement. Here, we report the Arabidopsis thaliana galactinol synthase 2 gene (AtGolS2) was able to confer drought tolerance and increase grain yield in two different rice (Oryza sativa) genotypes under dry field conditions. The developed transgenic lines expressing AtGolS2 under the control of the constitutive maize ubiquitin promoter (Ubi:AtGolS2) also had higher levels of galactinol than the non‐transgenic control. The increased grain yield of the transgenic rice under drought conditions was related to a higher number of panicles, grain fertility and biomass. Extensive confined field trials using Ubi:AtGolS2 transgenic lines in Curinga, tropical japonica and NERICA4, interspecific hybrid across two different seasons and environments revealed the verified lines have the proven field drought tolerance of the Ubi:AtGolS2 transgenic rice. The amended drought tolerance was associated with higher relative water content of leaves, higher photosynthesis activity, lesser reduction in plant growth and faster recovering ability. Collectively, our results provide strong evidence that AtGolS2 is a useful biotechnological tool to reduce grain yield losses in rice beyond genetic differences under field drought stress. 相似文献
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Ishida Y Shibata Y Fukuhara I Yano Y Takehara I Kaneko K 《Bioscience, biotechnology, and biochemistry》2011,75(3):427-433
A double-blind, placebo-controlled, randomized clinical trial was conducted to evaluate the effects of ingesting an excess of tablets containing casein hydrolysate, incorporating angiotensin I-converting enzyme (ACE) inhibitory peptides such as Val-Pro-Pro (VPP) and Ile-Pro-Pro (IPP), in subjects with blood pressure ranging from normal to mild hypertension. A total of 48 subjects were given either 5 times more than the effective amount of casein hydrolysate or a placebo in tablet form for 4 weeks. In the active group, systolic blood pressure (SBP) decreased significantly as compared with the placebo group. In stratified analysis, however, this antihypertensive effect was not found in normotensive subjects. In addition, neither an acute or nor an excessive reduction in blood pressure nor clinically important adverse events were observed in this study. These findings suggest that intake of a 5-fold excess of tablets containing casein hydrolysate can lead to a mild improvement in hypertension without side effects. 相似文献
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Metabolic Pathways Involved in Cold Acclimation Identified by Integrated Analysis of Metabolites and Transcripts Regulated by DREB1A and DREB2A 总被引:3,自引:0,他引:3
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Design of an optimal promoter involved in the heat‐induced transcriptional pathway in Arabidopsis,soybean, rice and maize 下载免费PDF全文
Kyonoshin Maruyama Takuya Ogata Norihito Kanamori Kyouko Yoshiwara Shingo Goto Yoshiharu Y. Yamamoto Yuko Tokoro Chihiro Noda Yuta Takaki Hiroko Urawa Satoshi Iuchi Kaoru Urano Takuhiro Yoshida Tetsuya Sakurai Mikiko Kojima Hitoshi Sakakibara Kazuo Shinozaki Kazuko Yamaguchi‐Shinozaki 《The Plant journal : for cell and molecular biology》2017,89(4):671-680
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S. Ito T. Fujji Y. Uushijima S. Tanaka M. Kameya-Iwaki S. Yoshiwara F. Kishi 《Journal of Phytopathology》1996,144(9-10):501-504
Genomic differences between 18 isolates of Burkholderia solanacearum originated from diseased plants cultivated in nine different agricultural fields were examined by using four DNA-based methods: repetitive DNA polymorphism analysis, restriction-site analysis of polymerase chain reaction products, random amplified polymorphic DNA (RAPD) analysis, and macrorestriction analysis. Genomic diversity among the isolates was detected by RAPD and macrorestriction analysis. The latter revealed the regional variation of the genome structure among the isolates, suggesting that B. solanacearum populations consist of a number of independent clonal lines. 相似文献