Involvement of Microtubules on Nuclear Positioning during Apical Growth in Adiantum protonemata
スポンサーリンク
概要
- 論文の詳細を見る
A synthetic brassinosteroid, 22,23(S,S)-homobrassinolide (hBR), was examined for its interaction with IAA and GA_3 In the elongation of hypocotyl sections of light-grown cucumber (Cucumis sativus L. cv. Aonagajibai) seedlings. hBR alone was less active than IAA. Its optimal concentration was around 10μM and the lowest effective concentration between 10 and 100μM, which is more than 100 times higher than that of brassinolide. hBR was more active in sections from younger seedlings. Its growth-promoting effect was negated or greatly reduced by inhibitors of auxin-induced elongation such as p-chlorophenoxyisobutyric acid and kinetin. hBR acted synergistically with IAA and 2,4-D but not with GA_3, showing only an additive effect. Sequential treatment of sections with hBR and then with IAA also resulted in synergistic enhancement of auxin-induced elongation, but when the order of treatment was reversed, hBR was inactive. The synergistic effect was obtained with 1 h pretreatment with hBR and could be reduced by subsequent washing with water. There was no sequential interaction between hBR and GA_3. The synergistic pretreatment effects of hBR and GA_3 were simply additive to each other. A membrane-bound ATPase inhibitor, dicyclohexylcarbodiimide, inhibited the hBR-induced elongation, but did not affect GA_3-induced elongation. The findings led to the conclusion that brassinosteroids enhance auxin action and possess growth-promoting activity which is independent of that of gibberellin.
- 日本植物生理学会の論文
著者
-
Furuya Masaki
Department Of Botany Faculty Of Science University Of Tokyo
-
Mineyuki Yoshinobu
Department of Biological Science, Graduate School of Science, Hiroshima University
-
Mineyuki Yoshinobu
Department Of Botany Faculty Of Science University Of Tokyo:(present)department Of Developmental Bio
-
Mineyuki Yoshinobu
Department Of Biological Science Faculty Of Science Hiroshima University
関連論文
- Production and Characterization of Monoclonal Antibodies Which Distinguish Different Surface Structues of Pea (Pisum sativum cv. Alaska) Phytochrome
- Production and Characterization of Monoclonal Antibodies to Rye (Secale cereale) Phytochrome
- Intracellular Localization and Dichroic Orientation of Phytochrome in Plasma Membrane and/or Ectoplasm of a Centrifuged Protonema of Fern Adiantum capillus-veneris L.
- Intracellular Photoreceptive Site for Polarotropism in Protonema of the Fern Adiantum capillus-veneris L.
- Apical Growht of Protonemata in Adiantum capillus-veneris-2-Action Spectra for the Induction of Apical Swelling and the Intracellular Photoreceptive Site
- Dichroic Orientation of Phytochrome Intermediates in the Pathway fromn P_R to P_ as Analyzed by Double Laser Flash Irradiations in Polarotropism of Adiantum Protonemata
- VERY RAPID REGULATION OF CYTOPLASMIC AGITATION BY TYPE II PHYTOCHROME IN Vallisneria EPIDERMIS CELLS
- Dark transformations of phytochrome in cotyledons of Pharbitis nil
- Electrostatic Binding of Proteins and Phytochrome to Differently Charged Liposomes
- Photocontrol of Nuclear DNA Replication in Chattonella antiqua (Raphidophyceae)
- Effects of Gabaculine on Phytochrome Synthesis during Imbibition in Embryonic Axes of Pisum sativum L.
- Isolation of cDNA for Pea Phytochrome Using an Expression Vector
- Temporal Changes in Swimming Direction during the Phototactic Orientation of Individual Cells in Cryptomonas sp.
- Phototransformation of the Red-Light-Absorbing Form to the Far-Red-Light-Absorbing Form of Phytochrome in Pea Epicotyl Tissue Measured by a Multichannel Transient Spectrum Analyser
- Involvement of Microtubules on Nuclear Positioning during Apical Growth in Adiantum protonemata
- Role of the Photoperiod Preceding a Flower-Inductive Dark Period in Dark-Grown Seedlings of Pharbitis nil Choisy
- Phytochrome-Mediated Control of Absorbance Decrease at 630 nm in Primary Roots of Zea mays
- Changes in Organelle Movement in the Nuclear Region during the Cell Cycle of Adiantum Protonema
- Action Spectrum between 250 and 800 Nanometers for the Photoinduced Inhibition of Spore Germination in Pteris vittata
- Studies on the Photoreceptors for the Promotion and Inhibition of Flowering in Dark-Grown Seedlings of Pharbitis nil Choisy
- Isolation and Identification of Diacylglyceryl-O-4'-(N,N,N-trimethyl)-homoserine from the Fern Adiantum capillus-veneris L.
- Spectral Properties of Chromophore-Containing Fragments Prepared from Pea Phytochrome by Limited Proteolysis
- A Digital Image Processing Technique for the Analysis of Particle Movements : Its Application to Organelle Movements during Mitosis in Adiantum Protonemata
- Effects of Calcium and Potassium Ions on Phototaxis in Cryptomonas
- Phototransformation of the Far-red Light-absorbing Form of Large Pea Phytochrome by Laser Flash Excitation
- Spectral Dependence of Night-break Effect on Photoperiodic Floral Induction in Lemna paucicostata 441
- Identification of a Triterpenoid Saponin in Etiolated Pea Shoots as Phytochrome Killer
- Isolation of the Red-light-absorbing Form of Phytochrome from Light-grown Pea Shoots
- Apical Growth of Protonemata in Adiantum capillus-veneris IV. Phytochrome-Mediated Induction in Non-Growing Cells
- Phototransformation of the red-light-absorbing form of undegraded pea phytochrome by laser flash excitation
- Photoreversible and photoirreversible absorbance changes in the red and far-red spectral regions in Zea primary roots
- Partial Enrichment of Pea Phytochrome mRNA by Gel Electrophoresis and Transfer to Poly (U)-Paper
- Synthesis of Translatable mRNA for Phytochrome during Imbibition in Embryonic Axes of Pisum sativum L.
- Improved method for visualizing coated pits, microfilaments, and microtubules in cryofixed and freeze-substituted plant
- Quantitative Analysis of Vesicles in the Preprophase Band by Electron Tomography
- Electron tomographic analysis of cortical microtubule ends in high pressure frozen onion cotyledon epidermis reveals differences in microtubule dynamics between interphase and prophase cells
- Phototaxis in Cryptomonas sp. under condition suppressing photosynthesis
- Effects of enzymatically digested microsome fractions on red-light-enhanced pelletability of pea phytochrome in vitro in the presence of calcium ion
- Detection of cortical clathrin at light microscopical level
- 植物微小管の研究:過去と現在
- Loosening of a Preprophase Band of Microtubules in Onion (Allium cepa L.) Root Tip Cells by Kinase Inhibitors
- A Comparative Study on Stainability of Preprophase Bands by the PSTAIR Antibody
- Alteration of Division Polarity and Preprophase Band Orientation in Stomatogenesis by Light
- Isolation of a naturally occurring inhibitor for dark Pfr reversion from etiolated Pisum epicotyls
- Action spectrum of phototaxis in a cryptomonad alga, Cryptomonas sp.
- Perithecial formation in Gelasinospora reticulispora III. Inhibitory effects of near-UV and blue light during the inductive dark period
- Perithecial formation in Gelasinospora reticulispora II. Promotive effects of near-ultraviolet and blue light after dark incubation