A5055297109- Plant Molecular Biology Research
- Plant Parasitism and Resistance
- Plant Stress Responses and Tolerance
- Plant and animal studies
- Plant Reproductive Biology
- Photosynthetic Processes and Mechanisms
- Plant nutrient uptake and metabolism
- Polysaccharides and Plant Cell Walls
- Plant tissue culture and regeneration
- Plant biochemistry and biosynthesis
- Allelopathy and phytotoxic interactions
- Legume Nitrogen Fixing Symbiosis
- Light effects on plants
- Plant Gene Expression Analysis
- Plant-Microbe Interactions and Immunity
- Insect-Plant Interactions and Control
- Plant Physiology and Cultivation Studies
- Seed Germination and Physiology
- Polyamine Metabolism and Applications
- Porphyrin and Phthalocyanine Chemistry
- Nematode management and characterization studies
- Transgenic Plants and Applications
- Plant Growth Enhancement Techniques
- Bioactive Compounds and Antitumor Agents
- Synthesis and Biological Evaluation
The University of Tokyo
2016-2025
Yokohama City University
2004-2025
Kihara Institute for Biological Research
2004-2025
King Abdulaziz University
2014-2023
Cairo University
2023
University of Science and Technology
2023
King Abdullah University of Science and Technology
2023
Korea University of Science and Technology
2023
Centre de Biologie Structurale
2021
Inserm
2021
Glc has hormone-like functions and controls many vital processes through mostly unknown mechanisms in plants. We report here on the molecular cloning of GLUCOSE INSENSITIVE1 (GIN1) ABSCISIC ACID DEFICIENT2 (ABA2) which encodes a unique Arabidopsis short-chain dehydrogenase/reductase (SDR1) that as link between nutrient signaling plant hormone biosynthesis. SDR1 is related to SDR superfamily members involved retinoid steroid biosynthesis mammals sex determination maize. antagonizes ethylene...
Abstract Brassinosteroids (BRs) induce plant tolerance to a wide spectrum of stresses. To study how BR induces stress tolerance, we manipulated the levels in cucumber (Cucumis sativus) through chemical genetics approach and found that were positively correlated with photo-oxidative cold stresses resistance Cucumber mosaic virus. We also showed treatment enhanced NADPH oxidase activity elevated H2O2 apoplast. as early 3 h returned basal d after treatment. BR-induced accumulation was...
Abstract Endogenous abscisic acid (ABA) levels are regulated by both biosynthesis and catabolism of the hormone. ABA 8′-hydroxylase is considered to be key catabolic enzyme in many physiological processes. We have previously identified that four members Arabidopsis (Arabidopsis thaliana) CYP707A gene family (CYP707A1 CYP707A4) encode 8′-hydroxylases, cyp707a2 mutants showed an increase dry imbibed seeds. In this study, we cyp707a1 mutant accumulated higher seeds than mutant. Expression...
Brassinolide (BL), considered to be the most important brassinosteroid (BR) and playing pivotal roles in hormonal regulation of plant growth development, was found induce disease resistance plants. To study potentialities BL activity on stress responding systems, we analyzed its ability tobacco rice Wild-type treated with exhibited enhanced viral pathogen mosaic virus (TMV), bacterial Pseudomonas syringae pv. tabaci (Pst), fungal Oidium sp. The measurement salicylic acid (SA) wild-type...
Summary We analyzed global gene expression in Arabidopsis response to various hormones and related experiments as part of the AtGenExpress project. The experimental agents included seven basic phytohormones (auxin, cytokinin, gibberellin, brassinosteroid, abscisic acid, jasmonate ethylene) their inhibitors. In addition, was investigated hormone‐related mutants during seed germination sulfate starvation. Hormone‐inducible genes were identified from hormone data. effects each relevance lists...
Abstract Systemic acquired resistance (SAR) is a potent innate immunity system in plants that effective against broad range of pathogens. SAR development dicotyledonous plants, such as tobacco (Nicotiana tabacum) and Arabidopsis thaliana, mediated by salicylic acid (SA). Here, using two types SAR-inducing chemicals, 1,2-benzisothiazol-3(2H)-one1,1-dioxide benzo(1,2,3)thiadiazole-7-carbothioic S-methyl ester, which act upstream downstream SA the signaling pathway, respectively, we show...
Abstract Although numerous physiological studies have addressed the interactions between brassinosteroids and auxins, little is known about underlying molecular mechanisms. Using an Affymetrix GeneChip representing approximately 8,300 Arabidopsis genes, we studied comprehensive transcript profiles over 24 h in response to indole-3-acetic acid (IAA) brassinolide (BL). We identified 409 genes as BL inducible, 276 IAA 637 total. These two hormones regulated only 48 common, suggesting that most...
Abstract Brassinosteroids (BRs) are steroidal plant hormones that essential for growth and development. Although insights into the functions of BRs have been provided by recent studies biosynthesis sensitivity mutants, mode action is poorly understood. With use DNA microarray analysis, we identified BR-regulated genes in wild type (WT; Columbia) Arabidopsis BR-deficient mutant, det2. generally responded more potently det2 mutant than WT, they showed only limited response a BR-insensitive...
Brassinosteroids (BRs) regulate multiple aspects of plant growth and development require an active BRASSINOSTEROID-INSENSITIVE1 (BRI1) BRI1-ASSOCIATED RECEPTOR KINASE1 (BAK1) for hormone perception signal transduction. Many animal receptor kinases exhibit ligand-dependent oligomerization followed by autophosphorylation activation the intracellular kinase domain. To determine if early events in BR signaling share this mechanism, we used coimmunoprecipitation epitope-tagged proteins to show...
Abstract The phytohormone abscisic acid (ABA) regulates physiologically important developmental processes and stress responses. Previously, we reported on Arabidopsis (Arabidopsis thaliana) L. Heynh. ahg mutants, which are hypersensitive to ABA during germination early growth. Among them, ABA-hypersensitive germination3 (ahg3) showed the strongest hypersensitivity. In this study, found that AHG3 gene is identical AtPP2CA, encodes a protein phosphatase 2C (PP2C). Although AtPP2CA has been be...
Summary Successful plant survival depends upon the proper integration of information from environment with endogenous cues to regulate growth and development. We have investigated interplay between ambient temperature hormone action during regulation hypocotyl elongation, we found that gibberellins (GAs) auxin are quickly independently recruited by modulate rate, whereas activity brassinosteroids (BRs) seems be required later on. Impairment GA biosynthesis blocked increased elongation caused...
Recent studies of highly branched mutants pea, Arabidopsis and rice have demonstrated that strigolactones (SLs) act as hormones inhibit shoot branching. The identification genes work downstream SLs is required for a better understanding how control the growth axillary buds. We found increased tillering phenotype fine culm1 (fc1) not rescued by application 1 μM GR24, synthetic SL analog. Treatment with high concentration GR24 (10 μM) causes suppression tiller in wild-type plants, but...
Abstract Screening for brassinosteroid (BR) biosynthesis inhibitors was performed to find chemicals that induce dwarfism in Arabidopsis, mutants resembled BR can be rescued by BR. Through this screening experiment, the compound brassinazole selected as most potent chemical. In dark-grown brassinazole-induced morphological changes were nearly restored those of wild type treatment with brassinolide. The structure is similar pacrobutrazol, a gibberellin inhibitor. However, assays cress...
Abstract Plant hormone brassinosteroids (BRs) and auxin exert some similar physiological effects likely through their functional interaction, but the mechanism for this interaction is unknown. In study, we show that BRs are required lateral root development in Arabidopsis act synergistically with to promte formation. BR perception transgenic expression of β-glucuronidase gene fused a synthetic auxin-inducible promoter (DR5::GUS) tips, while exogenous promotes DR5::GUS tips stele region...