解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
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心理学,临床
abstract::The ionic specificity of IAA-induced acidification by Avena coleoptiles was studied, using zwitterionic, presumably impermeant buffers. The acidification was almost totally dependent on divalent cations with an order of effectiveness of Ca(2+) >/= Sr(2+) > Mn(2+), Mg(2+); whereas other polyvalent cations tested were i...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.3.347
更新日期:1976-03-01 00:00:00
abstract::The marine dinoflagellate Amphidinium carterae (Plymouth 450) releases several water-soluble peridinin-chlorophyll a proteins after freezethawing. These chromoproteins have a molecular weight of 39.2 x 10(3) and are comprised of noncovalently bound peridinin and chlorophyll a and a nonoligomeric protein. They have dis...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.2.297
更新日期:1976-02-01 00:00:00
abstract::Growth of Alaska peas (Pisum sativum) is inhibited more than 60% by alpha-cyclopropyl-alpha-(p-methoxyphenyl)-5-pyrimidine methyl alcohol (ancymidol) treatment. This growth inhibition can be reversed completely by gibberellic acid application. Cell-free enzyme preparations from pea shoot tips and wild cucumber (Marah ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.2.245
更新日期:1976-02-01 00:00:00
abstract::The term "bound auxin" is herein used to describe auxin conjugates insoluble in organic solvents which dissolve indoleacetic acid (IAA) and its derivatives, but hydrolyzable by NaOH to release IAA. Bound auxin from pea stems was fractionated into water-soluble, water-insoluble/NaOH-hydrolyzable, and insoluble componen...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.2.197
更新日期:1976-02-01 00:00:00
abstract::When pea (Pisum sativum) seeds were wetted, a sharp front separated the wet and dry portions, the seeds swelled, and the water content in the wetted portion continued to increase for a long time. A model was proposed and tested that takes into account these three characteristics and in particular does not postulate a ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.2.153
更新日期:1976-02-01 00:00:00
abstract::The dark respiration rate of discs from fully expanded tobacco leaves (Nicotiana tabacum) increased linearly with decreasing diameter, the relative increase being independent of leaf age. The wound respiration responsible for this situation reached a plateau within 15 minutes of excision. Metabolite analysis gave evid...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.1.80
更新日期:1976-01-01 00:00:00
abstract::The fatty acid composition of the major lipids of the chloroplast membranes, the mono- and digalactosyl diglycerides, can be definably altered with various substituted pyridazinones. Galactolipid fatty acid composition of wheat (Triticum aestivum L.) can be altered so that there is a decrease in linolenic acid accompa...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.57.1.38
更新日期:1976-01-01 00:00:00
abstract::ASSIMILATORY NITRATE REDUCTASE (NADH: nitrate oxidoreductase, EC 1.6.6.1) from Chlorella vulgaris has been purified to electrophoretic homogeneity with an overall yield of 60% by a procedure that utilizes blue dextran-agarose as an affinity column. Nitrate reductase binds to blue dextran and is not eluted in the prese...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.6.853
更新日期:1975-12-01 00:00:00
abstract::This work tested one aspect of the relations between membrane permeability and fruit ripening. Membrane permeability was measured as [(3)H]water efflux rate from preloaded fruit pericarp disks. Different stages of fruit development were compared between two tomato (Lycopersicon esculentum Mill) strains: the normal Rut...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.6.813
更新日期:1975-12-01 00:00:00
abstract::At maturity, the fruit of two early maturing orange cultivars, Hamlin and Pineapple (Citrus sinensis [L.] Osbeck), contained more ethylene and abscisic acid than the late maturing Valencia and Lamb Summer (C. sinensis [L.] Osbeck) cultivars. Ethylene (up to 95 nl/l in internal atmosphere) and abscisic (50 mug/kg dry w...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.6.765
更新日期:1975-12-01 00:00:00
abstract::The unicellular algae Chlorella sorokiniana was used as a model system to investigate the interaction of ozone with plant cell membranes. Ozone induces K(+) leakage from Chlorella sorokiniana similar to the electrolytic loss observed from many higher plants under stressful conditions. The kinetics of this leakage indi...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.6.723
更新日期:1975-12-01 00:00:00
abstract::The problem of determining gas exchange rates from flow system data under nonsteady state conditions is analyzed. A correction factor is presented for obtaining constant rates under nonsteady state conditions. A general formula for obtaining any rate under nonsteady state conditions is also given. Turnover time is def...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.5.680
更新日期:1975-11-01 00:00:00
abstract::In Zea mays L., addition of glucose to the induction medium has no effect on the induction of nitrate reductase during the initial 3 hours either in root tips (0-10 mm) or mature root sections (25-35 mm). With longer times, higher levels of enzyme activity are recovered from both root segments when glucose is present ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.5.634
更新日期:1975-11-01 00:00:00
abstract::The optimum temperature of protein synthesis in wheat seedlings (Triticum aestivum L.), measured as (14)C-leucine incorporation, depends on the growing temperature. Plants grown at reduced temperature (4 C) reach their optimum at 27.5 C, whereas plants kept at 36 C have the highest rate of protein synthesis at 35 C. T...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.5.590
更新日期:1975-11-01 00:00:00
abstract::Stem cold hardening developed to different levels in citrus types tested in controlled environments. Exotherms indicated ice spread was more uniform and rapid in unhardened than in cold-hardened stems. All attempts to inhibit the functioning of citrus leaves resulted in less cold hardening in the stems. Citrus leaves ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.4.540
更新日期:1975-10-01 00:00:00
abstract::The sites of action of several compounds, reported to inhibit CO(2) fixation by chloroplast preparations were located by developing assays in lettuce chloroplasts to test their effect on partial reactions of the carbon cycle and on carbonic anhydrase. The results indicated that: d, l-glyceral-dehyde and 5'-AMP inhibit...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.4.481
更新日期:1975-10-01 00:00:00
abstract::Chlorophyll levels in l-cm sections of the youngest fully expanded leaves of normal (Y) Festuca pratensis L. declined almost to zero over a period of 6 days after excision. Chlorophyll in a mutant genotype (NY) remained near the initial level for the whole of this period. Abscisic acid promoted pigment loss in Y but h...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.3.438
更新日期:1975-09-01 00:00:00
abstract::Excised juvenile leaves of Microgramma vacciniifolia (Polypodiaceae) develop sporophytic regenerants when grown on mineral agar with sucrose. The ratio of sporophytes to gametophytes produced from the leaf tissue increases with higher percentages of sucrose such that at 4% sucrose, the induction of aposporous gametoph...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.3.390
更新日期:1975-09-01 00:00:00
abstract::Ribulose 1,5-diphosphate carboxylase (RUDPcase) from autotrophically grown Euglena gracilis was purified to homogeneity as measured by analytical ultracentrifugation, polyacrylamide gel electrophoresis, and immunoprecipitation reactions. The enzyme represented about 9% of total protein and 24% of soluble protein in th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.3.345
更新日期:1975-09-01 00:00:00
abstract::Storage protein hydrolysis in the cotyledons of germinating mung beans (Phaseolus aureus Roxb.) was examined by histochemical techniques, and the autolytic capacity of isolated protein bodies was studied with biochemical methods. The localization of endopeptidase activity within the cotyledons was studied using an Ind...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.2.292
更新日期:1975-08-01 00:00:00
abstract::Theoretical analysis of the CO(2) assimilation and water loss by single leaves suggests that the water use efficiency of C(4) species decreases as stomatal resistance increases. To confirm this hypothesis for a complete maize crop, results from computer simulations and a field experiment were compiled for varying stom...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.2.245
更新日期:1975-08-01 00:00:00
abstract::This paper describes the assembly (from commercially available components) of an antilog converter, which transforms the output signals of ion-specific electrodes to ionic concentrations suitable for a linear recorder. It responds linearly to cation concentrations from 10 mum to at least 10 mm and can be used for elec...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.2.181
更新日期:1975-08-01 00:00:00
abstract::Dark H(2) metabolism was studied in marine and fresh water red algae, the green alga, Chlamydomonas, and mosses. A time variable and temperature-sensitive anaerobic incubation was required prior to H(2) evolution. H(2) evolution was sensitive to disalicylidenepropanediamine. An immediate H(2) uptake was observed in th...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.1.72
更新日期:1975-07-01 00:00:00
abstract::Two major proteins (the 7S and 11S globulins) of soybean (Glycine max) were simultaneously isolated by a simple method based on their different solubilities in dilute tris (hydroxymethyl) aminomethane buffers. The purified 7S globulins, which represented essentially the entire 7S soybean protein fraction capable of di...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.1.19
更新日期:1975-07-01 00:00:00
abstract::The oxidation of malate and citrate by isolated plant mitochondria can be stimulated by the addition of inorganic phosphate. This stimulation (a) is not inhibited by oligomycin or uncouplers; (b) can not be duplicated by addition of adenine nucleotide; (c) is inhibited by 2-n-butylmalonate; and (d) is not evident in d...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.56.1.121
更新日期:1975-07-01 00:00:00
abstract::Autoradiographs of (22)Na-loaded bean (Phaseolus vulgaris L. cv. ;Brittle Wax') leaf slices showed that most of the tracer was concentrated in vascular tissue. Rubidium-86 was uniformly distributed in slices that had been incubated in darkness; after incubation in the light many small dark spots appeared on the autora...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.6.978
更新日期:1975-06-01 00:00:00
abstract::Reciprocal cleft and pistillate floral bud grafts were made between parthenocarpic ;Fertilla' and nonparthenocarpic ;MSU 713-5' cucumber (Cucumis sativus L.) lines to localize the site for stimulation of parthenocarpic fruit set. No fruit set on ;MSU 713-5' controls, scion grafted to ;Fertilla,' or rootstock with ;Fer...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.6.1107
更新日期:1975-06-01 00:00:00
abstract::Growth response of coleoptile segments excised from 3-day-old seedlings of wheat (Triticum vulgare cv. Baart) to gibberellic acid, indoleacetic acid, and 2,4-dichlorophenoxyacetic acid, to red light, and to several microtubule disorganizers depends on the initial position of the excised segment in the intact coleoptil...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.6.1062
更新日期:1975-06-01 00:00:00
abstract::Symptoms typical of senescence occurred in green detached primary barley (Hordeum vulgare L.) leaves placed in darkness and in light. Chlorophyll, total soluble protein, ribulose 1,5-diphosphate carboxylase protein and activity each progressively decreased in darkness and to a lesser extent in light. In all treatments...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.6.1009
更新日期:1975-06-01 00:00:00
abstract::Energy dispersive x-ray analysis was used to study the composition of certain protein body components in Cucurbita maxima cotyledons. The globoid crystal was rich in phosphorus, potassium, and magnesium. This elemental composition provides further evidence that the globoid crystal in squash cotyledon protein bodies is...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.5.913
更新日期:1975-05-01 00:00:00
abstract::The incorporation of (14)C-2-mevalonic acid into transfer RNA and ribosomal RNA (high molecular weight RNA) in rapidly growing, cytokinin-dependent tobacco (Nicotiana tabacum var. Wisconsin No. 38) callus cultures has been investigated. Approximately 40% of the label incorporated into transfer RNA was present in a rib...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.5.853
更新日期:1975-05-01 00:00:00
abstract::Dark treatment of 25-day-old greenhouse-grown plants of inoculated soybean (Glycine max var. Chippewa) for 1 day reduced ATP by 70%, sucrose by 60%, total adenosine phosphates by 60%, ATP/ADP ratio by 55%, nitrogenase activity by 50%, and energy charge by 15% in nodules. The close correlation between nitrogenase activ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.4.796
更新日期:1975-04-01 00:00:00
abstract::The rates of CO(2) exchange and (14)CO(2) incorporation in the light and dark and the activities of several photosynthetic, photorespiratory, and respiratory enzymes of soybean (Glycine max [L.] Merr. cv. Wye) reproductive structures were determined at weekly intervals from anthesis to pod maturity. At all stages of p...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.4.745
更新日期:1975-04-01 00:00:00
abstract::Leaflets of Vicia faba were pulse-labeled with (14)CO(2) to follow the subsequent movement of photosynthate between leaf tissues. Samples were taken during a (12)CO(2) chase, quick frozen, freeze-substituted, and embedded in methacrylate. Paradermal sections provided tissue samples consisting only of upper epidermis, ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.4.699
更新日期:1975-04-01 00:00:00
abstract::Bicarbonate-(14)C was provided to 5- and 11-day-old suspension cultures of Paul's Scarlet rose, and the incorporation of (14)C into lipid, protein, amino acids, and organic acids was determined. The rate of bicarbonate uptake was approximately the same by 5- and 11-day-old cells, but the distribution of (14)C among ce...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.4.643
更新日期:1975-04-01 00:00:00
abstract::The effect of leaf water deficit on net CO(2) assimilation was studied under two conditions: in one, the stomata were allowed to contribute to the regulation of CO(2) assimilation; in the other, air was forced through the leaf at a constant rate to overcome the effects of change in stomatal resistance accompanying cha...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.4.589
更新日期:1975-04-01 00:00:00
abstract::An extract from 8-day-old cotton ovules (Gossypium hirsutum L.) was partitioned into three fractions and each fraction was derivatized and analyzed separately. Gas-liquid chromatography and computer-controlled gas-liquid chromatography-mass spectrometry were used to separate, measure, and identify the naturally occurr...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.3.550
更新日期:1975-03-01 00:00:00
abstract::ORNITHINE: 2-oxoacid aminotransferase (EC 2.6.1.13) has been purified over 400-fold with a total recovery of 14% from acetone powders of cotyledons of germinating squash (Cucurbita pepo, L.) seedlings. The pH optimum of the transamination between l-ornithine and alpha-ketoglutarate is 8 and the Michaelis constants are...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.3.502
更新日期:1975-03-01 00:00:00
abstract::Ethylene supplied with indoleacetic acid at 0.1 and 1 mum inhibited elongation and enhanced swelling in epicotyls of decapitated and derooted pea seedlings (Pisum sativum L., var. Alaska). These growth responses were correlated with the development of cell walls rich in weak acid-extractable materials and pectic uroni...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.3.450
更新日期:1975-03-01 00:00:00
abstract::Isolated maize (Zea mays var. kelvedon glory) etioplasts have been used to investigate the relationships between the spectral shifts and ultrastructural changes which occur during light-induced chloroplast development. After primary photoconversion, the Shibata shift was observed as a change from 680 to 670 nm in the ...
journal_title:Plant physiology
pub_type: 杂志文章
doi:10.1104/pp.55.2.393
更新日期:1975-02-01 00:00:00