Abstract:
:Lipoxidase, in the cotyledons of squash (Cucurbita moscata) seedlings grown in the dark, reached its peak activity on the fifth day and then declined to its lowest activity on the eighth day. Under continuous irradiation, the rate of enzyme disappearance was accelerated by red (655 mmu) and was retarded by far-red (735 mmu) radiation. Acceleration of enzyme disappearance caused by red light was reversed repeatedly by far-red light in seedlings that received an initial exposure to red radiation. These responses were independent of the duration of irradiation at each of the alternating wavebands. No change was observed when the white light was administered either 24 hours before or 24 hours after the red, far-red treatment.The lipoxidase system of the seedlings given an initial exposure to far-red radiation also responded reversibly to alternating far-red, red extended exposures, but it failed to respond reversibly when short exposures were employed. Similarly, no change occurred in these seedlings when either pre- or post-treatment with the white light was applied.These results demonstrate that the capacity of lipoxidase to act reversibly depends primarily on the duration of exposure and on the kind of light (red or far-red) to which the seedlings were exposed initially. In spite of these variations, lipoxidase metabolism can be considered an additional biochemical manifestation of red, far-red reaction that operates in the photomorphogenesis of plants.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Surrey Kdoi
10.1104/pp.42.3.421subject
Has Abstractpub_date
1967-03-01 00:00:00pages
421-4issue
3eissn
0032-0889issn
1532-2548journal_volume
42pub_type
杂志文章相关文献
PLANT PHYSIOLOGY文献大全abstract::The components in plant signal transduction pathways are intertwined and affect each other to coordinate plant growth, development, and defenses to stresses. The role of ubiquitination in connecting these pathways, particularly plant innate immunity and flowering, is largely unknown. Here, we report the dual roles for...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.111.192617
更新日期:2012-05-01 00:00:00
abstract::The spontaneous occurrence of resistance to the herbicide glyphosate in weed species has been an extremely infrequent event, despite over 20 years of extensive use. Recently, a glyphosate-resistant biotype of goosegrass (Eleusine indica) was identified in Malaysia exhibiting an LD(50) value approximately 2- to 4-fold ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.001560
更新日期:2002-07-01 00:00:00
abstract::The rates of absorption and metabolism of 3-amino-2,5-dichlorobenzoic acid (amiben) were investigated in 3-day-old roots of amiben-sensitive velvetleaf (Abutilon theophrasti Medic.) and amiben-tolerant morningglory [Ipomoea hederacea (L.) Jacq.].The initial rates of amiben absorption and binding were identically conce...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.44.6.854
更新日期:1969-06-01 00:00:00
abstract::The phosphohydrolase activity of a light microsomal fraction isolated from corn roots (Zea mays L. cv LG 55) was investigated. The fraction, which appears to be enriched in endoplasmic reticulum and Golgi membranes, has ATPase and pyrophosphatase activities that hydrolyze ATP and pyrophosphate at an optimum pH of 7.0,...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.96.4.1345
更新日期:1991-08-01 00:00:00
abstract::The Type II mutants of the cyanobacterium Synechococcus PCC7942 (G.D. Price, M.R. Badger [1989] Plant Physiol 91: 514-525) are able to accumulate a large pool of inorganic carbon inside the cell, but are unable to utilize it for CO(2) fixation, resulting in a high CO(2)-requiring phenotype. We have isolated a 3.5-kb B...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.2.794
更新日期:1992-10-01 00:00:00
abstract::Ribulose 1,5-bisphosphate in the chloroplast has been suggested to regulate the activity of the ribulose bisphosphate carboxylase/oxygenase. To generate high levels of ribulose bisphosphate, isolated and intact spinach chloroplasts were illuminated in the absence of CO(2). Under these conditions, chloroplasts generate...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.68.1.252
更新日期:1981-07-01 00:00:00
abstract::Using novel specially designed instrumentation, fluorescence emission spectra were recorded from Arabidopsis (Arabidopsis thaliana) leaves during the induction period of dark to high-light adaptation in order to follow the spectral changes associated with the formation of nonphotochemical quenching. In addition to an ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.148213
更新日期:2010-03-01 00:00:00
abstract::A poplar hybrid, Populus tremula x Populus alba, was transformed with the bacterial genes for either glutathione reductase (GR) (gor) or glutathione synthetase (GS) (gshII). When the gor gene was targeted to the chloroplasts, leaf GR activities were up to 1000 times greater than in all other lines. In contrast, target...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.3.1047
更新日期:1995-11-01 00:00:00
abstract::Topped plants of tomato (Lycopersicon esculentum), cucumber (Cucumis sativus), corn (Zea mays), carrot (Daucus carota), and peanut (Arachis hypogaea) were treated with 0.5 to 50 micromolar Ni (containing (63)Ni) in nutrient solutions. Xylem exudate was collected for 10 hours or, in the case of corn, for 20 hours at 5-...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.48.3.273
更新日期:1971-09-01 00:00:00
abstract::Arabidopsis displays circadian rhythms in stomatal aperture, stomatal conductance, and CO(2) assimilation, each of which peaks around the middle of the day. The rhythmic opening and closing of stomata confers a rhythm in sensitivity and resistance, respectively, to the toxic gas sulfur dioxide. Using this physiologica...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.003418
更新日期:2002-08-01 00:00:00
abstract::Experiments were conducted to determine whether symbiotic bacteroids of Bradyrhizobium japonicum produce exopolysaccharide within soybean (Glycine max [L.] Merr. cv ;Lee 74') nodules. B. japonicum strains RT2, a derivative of USDA 110 with resistance to streptomycin and rifampicin, and RT176-1, a mutant deficient in e...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.79.2.445
更新日期:1985-10-01 00:00:00
abstract::The kinetic properties of the adenosine 5[prime]-diphosphate/adenosine 5[prime]-triphosphate (ADP/ATP) translocator from pea (Pisum sativum L.) root plastids were determined by silicone oil filtering centrifugation and compared with those of spinach (Spinacia oleracea L.) chloroplasts and pea leaf mitochondria. In add...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.103.1.131
更新日期:1993-09-01 00:00:00
abstract::Megasporogenesis is a key step during ovule development in angiosperms, but the small number and inaccessibility of these cells have hampered molecular and genome-wide studies. Thus, many questions remain regarding the molecular basis of cell specification, differentiation, and development in the female gametophyte. H...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.19.01254
更新日期:2020-04-01 00:00:00
abstract::The soybean SAUR (Small Auxin-Up RNA) genes are transcriptionally induced by exogenous auxins within a few minutes after hormone application. This response is specifically induced by auxins primarily in epidermal and cortical cells within elongation zones of hypocotyls and epicotyls. We have previously shown that an 8...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.106.1.37
更新日期:1994-09-01 00:00:00
abstract::Elongation of intact young leaves of maize was found to be dynamically dependent on soil water supply. With adequate water, elongation was remarkably constant but slowed when the water potential of the soil in pots dropped from -0.1 to -0.2 bar and stopped when it dropped to -2.5 bars. The corresponding range of leaf ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.48.5.631
更新日期:1971-11-01 00:00:00
abstract::The presence of chloroplasts in guard cells from leaf epidermis, coleoptile, flowers, and albino portions of variegated leaves was established by incident fluorescence microscopy, thus confirming the notion that guard cell chloroplasts are remarkably conserved. Room temperature emission spectra from a few chloroplasts...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.67.1.17
更新日期:1981-01-01 00:00:00
abstract::As part of a more detailed study on plant tumorigenesis, the action of gibberellic acid (GA(3)) in wounded potato tuber tissues as a model system has been evaluated. GA(3) stimulates total RNA synthesis in wounded tissues, the optimal concentration being 0.1 micromolar. The responsiveness of the tissue toward the horm...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.64.5.863
更新日期:1979-11-01 00:00:00
abstract::The effect of applied nitrogen (N) on the growth, leaf expansion rate, biomass partitioning and leaf N levels of Chenopodium album (C(3)) and Amaranthus retroflexus (C(4)) were investigated. At a given applied N level, C. album had 50% greater leaf N per unit area (N(a)) than A. retroflexus. Nitrate accumulated at low...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.84.3.954
更新日期:1987-07-01 00:00:00
abstract::Cytidine deoxyriboside (Cdr), uridine deoxyriboside (Udr), and guanosine deoxyriboside (Gdr), induce quantitative bleaching of the fronds of Lemna minor (duckweed) during growth in continuous light on photoheterotrophic medium. Cdr-induced bleaching is not accompanied by a reduction in frond multiplication rate, but U...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.61.6.989
更新日期:1978-06-01 00:00:00
abstract::Inoculation of 2-day-old cowpea (Vigna unguiculata [L.] Walp.) seedlings with Rhizobium fredii USDA257 results in proficient nodulation of the tap root. The most abundant nodulation occurs in a region roughly corresponding to the position of the root tip at the time of inoculation. We have examined plant gene expressi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.92.4.946
更新日期:1990-04-01 00:00:00
abstract::The Mg-nucleoside triphosphatase activity associated with the inner envelope membrane of the pea chloroplast is comprised of at least two components, a major activity that is sensitive to vanadate and sodium fluoride and a minor insensitive activity. The vanadate/fluoride sensitive activity has been partially purified...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.80.4.908
更新日期:1986-04-01 00:00:00
abstract::We have analyzed the possibility that chemical signaling does not entirely account for the effect of water deficit on the maize (Zea mays L.) leaf elongation rate (LER) under high evaporative demand. We followed time courses of LER (0.2-h interval) and spatial distribution of elongation rate in leaves of either water-...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.114.3.893
更新日期:1997-07-01 00:00:00
abstract::Root respiration associated with symbiotic fixation in soybean (Glycine max [L.] Merr.) was estimated by four methods.Averaged over the life of the plant, the root respires 5.8 milligrams C per milligram N accumulated from fixation. When nitrogenase (C(2)H(2)) activity and root respiration were decreased by treating r...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.72.3.701
更新日期:1983-07-01 00:00:00
abstract::alpha-Amylase activity increased in attached cotyledons of germinated Vigna mungo seeds until the 5th day after imbibition and decreased thereafter, whereas in detached and incubated cotyledons the activity continuously increased and, at the 6th day, reached the value more than three times that of the maximum activity...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.71.1.173
更新日期:1983-01-01 00:00:00
abstract::The large ATP synthase gene cluster in spinach (Spinacia oleracea) plastids encodes four of the six chloroplast-encoded ATP synthase subunits. Expression of this cluster was examined to determine its response to light-induced plastid development. Spinach plastid transcripts were isolated from etiolated tissues, etiola...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.100.3.1164
更新日期:1992-11-01 00:00:00
abstract::Nod Factor Receptor5 (NFR5) is an atypical receptor-like kinase, having no activation loop in the protein kinase domain. It forms a heterodimer with NFR1 and is required for the early plant responses to Rhizobium infection. A Rho-like small GTPase from Lotus japonicus was identified as an NFR5-interacting protein. The...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.112.197269
更新日期:2012-05-01 00:00:00
abstract::The phytotoxin fusicoccin (FC), after binding to a plasma membrane-localized receptor, causes higher plant cells to excrete protons. Ligand-binding analysis has been used to show that the plasma membrane of mung bean (Vigna radiata L.) hypocotyls contains both high-affinity (HA) and low-affinity (LA) binding sites for...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.104.2.691
更新日期:1994-02-01 00:00:00
abstract::In cyanobacteria fatty acids destined for lipid synthesis can be synthesized de novo, but also exogenous free fatty acids from the culture medium can be directly incorporated into lipids. Activation of exogenous fatty acids is likely required prior to their utilization. To identify the enzymatic activity responsible f...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.109.148007
更新日期:2010-03-01 00:00:00
abstract::C4 leaf phosphoenolpyruvate carboxylase (PEPC; EC 4.1.1.31) is subject to a day/night regulatory phosphorylation cycle. By using the cytoplasmic protein synthesis inhibitor cycloheximide (CHX), we previously reported that the reversible in vivo light activation of the C4 PEPC protein-serine kinase requires protein syn...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.101.3.891
更新日期:1993-03-01 00:00:00
abstract::Superoxide dismutase was purified from pea (Pisum sativum L., cv. Wando) seeds and corn (Zea mays L., cv. Michigan 500) seedlings. The purified pea enzyme eluting as a single peak from gel exclusion chromatography columns contained the three electrophoretically distinct bands of superoxide dismutase characterizing the...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.59.2.315
更新日期:1977-02-01 00:00:00