Day-night periodicity of exudation in detopped tobacco.

abstract：:Dry matter accumulation, nitrate reductase activity of various organs, nitrate accumulation, nitrogen derived from nitrate, and nitrogen content were studied during 17 days of vegetative regrowth of harvested (detopped) alfalfa (Medicago sativa L.). Seedlings were grown in the glasshouse and treated with 0, 40, and 80...

journal_title：Plant physiology

authors： Vance CP,Heichel GH

更新日期：1981-11-01 00:00:00

abstract：:An investigation was made to determine the univalent cation requirements of starch synthetase from a variety of plant species of economic importance. The particulate enzyme from sweet corn was shown to have an absolute requirement for potassium, with the optimum activation occurring at 0.05 M KCl. Rubidium, cesium, an...

journal_title：Plant physiology

authors： Nitsos RE,Evans HJ

更新日期：1969-09-01 00:00:00

abstract：:The indoleacetic acid (IAA) oxidase activity of root tips of boron-sufficient, -deficient, recovering, and IAA-treated boron-sufficient squash plants (Cucurbita pepo L.) was determined. Apical and subapical root sections displayed an increase in IAA oxidase activity between 6 and 9 hours after boron was withheld, and ...

journal_title：Plant physiology

authors： Bohnsack CW,Albert LS

更新日期：1977-06-01 00:00:00

abstract：:A method is described for the release of large quantities of mesophyll cells from leaves of both cold-hardened and nonhardened winter rye seedlings by a combination of enzymic and physical maceration. Such preparations usually contain a certain percentage of nonviable cells and are thus not suitable for quantitative b...

journal_title：Plant physiology

authors： Singh J

更新日期：1981-05-01 00:00:00

abstract：:The mode of abscisic acid (ABA) uptake was studied in excised leaf and root tissue discs of sugar beet (Beta vulgaris L.). Discs were incubated in buffered medium that contained 1 mm CaCl(2) and [(14)C]ABA. The sensitivity of ABA uptake to metabolic inhibitors and temperature indicated that the ABA transport system ha...

journal_title：Plant physiology

authors： Daie J,Wyse R

更新日期：1983-06-01 00:00:00

abstract：:Treatment of barley (Hordeum vulgare) seedlings with 400 millimolar NaCl for 3 days resulted in a reduction in plant growth and an increase in the leaf content in ions (K(+) + Na(+)) and proline. Purified mitochondria were successfully isolated from barley leaves. Good oxidative and phosphorylative properties were obs...

journal_title：Plant physiology

authors： Jolivet Y,Pireaux JC,Dizengremel P

更新日期：1990-10-01 00:00:00

abstract：:To study the effect of O(2) on the photosynthetic and glycolate pathways, maize leaves were exposed to (14)CO(2) during steady-state photosynthesis in 21 or 1% O(2). At the two O(2) concentrations after a (14)CO(2) pulse (4 seconds) followed by a (12)CO(2) chase, there was a slight difference in CO(2) uptake and in th...

journal_title：Plant physiology

authors： Morot-Gaudry JF

更新日期：1980-12-01 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

authors： Peterson LW,Huffaker RC

更新日期：1975-06-01 00:00:00

abstract：:Rubbing-induced lignification in Bryonia dioica internodes is significantly impaired by N(o-hydroxyphenyl) and N(o-aminophenyl) sulfinamoyl tertiobutyl acetate, specific inhibitors of cinnamyl alcohol dehydrogenase, an enzyme which is strictly associated with lignin monomer synthesis. Along with the reduction of ligni...

journal_title：Plant physiology

authors： De Jaegher G,Boyer N

更新日期：1987-05-01 00:00:00

abstract：:Membrane fractions from mature silver beet (Beta vulgaris) deveined leaf and leaf stem homogenates have associated Ca(2+) -dependent protein kinase. The Ca(2+) -dependent protein kinase activity is associated with plasma membranes (density 1.14-1.18 grams per cubic centimeter) as determined from copurification on isop...

journal_title：Plant physiology

authors： Klucis E,Polya GM

更新日期：1988-09-01 00:00:00

abstract：:Ethylene production was induced in sections of dark-grown Sorghum vulgare L. seedlings by treatment with light in the blue and far red regions of the light spectrum. The action spectrum closely resembled the previously reported spectra for high irradiance response; thus, light-induced ethylene production is probably a...

journal_title：Plant physiology

authors： Craker LE,Abeles FB,Shropshire W

更新日期：1973-06-01 00:00:00

abstract：:Phototropism and hypocotyl growth inhibition are modulated by the coaction of different blue-light photoreceptors and their signaling pathways. How seedlings integrate the activities of the different blue-light photoreceptors to coordinate these hypocotyl growth responses is still unclear. We have used time-lapse imag...

journal_title：Plant physiology

authors： Whippo CW,Hangarter RP

更新日期：2003-07-01 00:00:00

abstract：:Ca-mediated processes are known to be involved in transducing many developmental, hormonal, and environmental cues in plant cells. In this study, the role of Ca in the perception of anoxic stress signals by maize (Zea mays L. cv B73) roots was assessed by studying the effect of various Ca antagonists on the induction ...

journal_title：Plant physiology

authors： Subbaiah CC,Zhang J,Sachs MM

更新日期：1994-05-01 00:00:00

abstract：:Boron (B) polyol complexes have been isolated and characterized from the phloem sap of celery (Apium graveolens L.) and the extrafloral nectar of peach (Prunus persica L.). In celery the direct analysis of untreated phloem sap by matrix-assisted laser desorption-Fourier transform mass spectrometry, with verification b...

journal_title：Plant physiology

authors： Hu H,Penn SG,Lebrilla CB,Brown PH

更新日期：1997-02-01 00:00:00

abstract：:Four cDNAs, one encoding an alpha-subunit and three encoding beta-subunits of the mitochondrial pyruvate dehydrogenase, were isolated from maize (Zea mays L.) libraries. The deduced amino acid sequences of both alpha- and beta-subunits are approximately 80% identical with Arabidopsis and pea (Pisum sativum L.) homolog...

journal_title：Plant physiology

authors： Thelen JJ,Miernyk JA,Randall DD

更新日期：1999-02-01 00:00:00

abstract：:Photosynthetic rate, ribulose 1,5-bisphosphate carboxylase activity, specific leaf weight, and leaf concentrations of carbohydrates, proteins, chlorophyll, and inorganic phosphate were determined periodically from midbloom until maturity in leaves of soybean plants (Glycine max L., var. Hodgson) from which reproductiv...

journal_title：Plant physiology

authors： Mondal MH,Brun WA,Brenner ML

更新日期：1978-03-01 00:00:00

abstract：:Magnesium (Mg) chelatase is a heterotrimeric enzyme complex that catalyzes a key regulatory and enzymatic reaction in chlorophyll biosynthesis, the insertion of Mg(2+) into protoporphyrin IX. Studies of the enzyme complex reconstituted in vitro have shown that all three of its subunits, CHL I, CHL D, and CHL H, are re...

journal_title：Plant physiology

authors： Rissler HM,Collakova E,DellaPenna D,Whelan J,Pogson BJ

更新日期：2002-02-01 00:00:00

abstract：:Suboptimal N or P availability and cool temperatures all decrease apparent hydraulic conductance (L) of cotton (Gossypium hirsutum L.) roots. The interaction between nutrient status and root temperature was tested in seedlings grown in nutrient solutions. The depression of L (calculated as the ratio of transpiration r...

journal_title：Plant physiology

authors： Radin JW

更新日期：1990-03-01 00:00:00

abstract：:Auxin precursors retard abscission when applied to debladed petioles of Coleus blumei Benth. The d and l forms of tryptophan are equally effective in retarding abscission. Tryptamine is more effective than is tryptophan. Both compounds apparently are converted to auxin through an aldehyde intermediate. The evidence pr...

journal_title：Plant physiology

authors： Valdovinos JG,Perley JE

更新日期：1966-12-01 00:00:00

abstract：:At least two hydroxypyruvate reductases (HPRs), differing in specificity for NAD(P)H and (presumably) utilizing glyoxylate as a secondary substrate, were identified by fractionation of crude maize leaf extracts with ammonium sulfate. The NADH-preferring enzyme, which most probably represented peroxisomal HPR, was prec...

journal_title：Plant physiology

authors： Kleczkowski LA,Edwards GE

更新日期：1989-09-01 00:00:00

abstract：:Photoinhibition reduces photosynthetic productivity; however, it is difficult to quantify accurately in complex canopies partly because of a lack of high-resolution structural data on plant canopy architecture, which determines complex fluctuations of light in space and time. Here, we evaluate the effects of photoinhi...

journal_title：Plant physiology

authors： Burgess AJ,Retkute R,Pound MP,Foulkes J,Preston SP,Jensen OE,Pridmore TP,Murchie EH

更新日期：2015-10-01 00:00:00

abstract：:The delivery of proteins instead of DNA into plant cells allows for a transient presence of the protein or enzyme that can be useful for biochemical analysis or genome modifications. This may be of particular interest for genome editing, because it can avoid DNA (transgene) integration into the genome and generate pre...

journal_title：Plant physiology

authors： Martin-Ortigosa S,Peterson DJ,Valenstein JS,Lin VS,Trewyn BG,Lyznik LA,Wang K

更新日期：2014-02-01 00:00:00

abstract：:The outermost cell layer of plants, the epidermis, and its outer (lateral) membrane domain facing the environment are continuously challenged by biotic and abiotic stresses. Therefore, the epidermis and the outer membrane domain provide important selective and protective barriers. However, only a small number of speci...

journal_title：Plant physiology

authors： Mao H,Nakamura M,Viotti C,Grebe M

更新日期：2016-12-01 00:00:00

abstract：:Chromatin isolated from soybean (Glycine max L., var. Wayne) hypocotyls was capable of catalyzing the polymerization of labeled deoxyribonucleoside triphosphate in the presence of the three other deoxyribonucleoside triphosphates into a trichloroacetic acid-insoluble product. This product was insensitive to base hydro...

journal_title：Plant physiology

authors： Leffler HR,O'brien TJ,Glover DV,Cherry JH

更新日期：1971-07-01 00:00:00

abstract：:At low water potential (psi(w)), dehydration reduces the symplast volume of leaf tissue. The effect of this reduction on photosynthetic capacity was investigated. The influence of osmotic adjustment on this relationship was also examined. To examine these relationships, comparative studies were undertaken on two wheat...

journal_title：Plant physiology

authors： Gupta AS,Berkowitz GA

更新日期：1987-12-01 00:00:00

abstract：:Plastocyanin and chloroplast coupling factor 1 (CF(1)) are released from spinach (Spinacia oleracea L.) thylakoids during a slow freezethaw cycle. CF(1) addition increases the proton uptake of thylakoids previously frozen in sucrose concentrations of 15 mm to 100 mm. Addition of CF(1) and plastocyanin restores the pro...

journal_title：Plant physiology

authors： Garber MP,Steponkus PL

更新日期：1976-05-01 00:00:00

abstract：:The mesophyll of sugar beet (Beta vulgaris L.) leaves emits red (chlorophyll a) fluorescence and blue-green fluorescence when excited with ultraviolet light. The intensity of blue-green fluorescence was increased in mesophylls affected by iron deficiency. This increase was large and progressive. It was concomitant wit...

journal_title：Plant physiology

authors： Morales F,Cerovic ZG,Moya I

更新日期：1994-09-01 00:00:00

abstract：:Using a genetic approach, we have identified and characterized a novel protein, named Msf1 (Maintenance factor for photosystem I), that is required for the maintenance of specific components of the photosynthetic apparatus in the green alga Chlamydomonas reinhardtii Msf1 belongs to the superfamily of light-harvesting ...

journal_title：Plant physiology

authors： Zhao L,Cheng D,Huang X,Chen M,Dall'Osto L,Xing J,Gao L,Li L,Wang Y,Bassi R,Peng L,Wang Y,Rochaix JD,Huang F

更新日期：2017-08-01 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

authors： Yelenosky G

更新日期：1975-10-01 00:00:00

abstract：:Experiments with lettuce seeds during the first hours of imbibition showed that oxygen is necessary to sustain high adenine nucleotide ratios and consequently, energy charge values are higher than 0.8 as is usually the case in normally metabolizing tissues.The energy charge value (0.2) of dry seeds soaked in aerated w...

journal_title：Plant physiology

authors： Hourmant A,Pradet A

更新日期：1981-09-01 00:00:00