Activation of the de novo pathway for pyridine nucleotide biosynthesis prior to ricinine biosynthesis in castor beans.

abstract：:The conversion of l-glutamate to delta-aminolevulinate, in preparations of cucumber etiochloroplasts incubated in vitro, was inhibited by protoheme IX and Mg-protoporphyrin IX. Mg-protoporphyrin IX was destroyed in the presence of air and plastids; this breakdown was accelerated by S-adenosyl methionine. Mg-protoporph...

journal_title：Plant physiology

authors： Chereskin BM,Castelfranco PA

更新日期：1982-01-01 00:00:00

abstract：:Hydroperoxide lyase (HPLS) activity in soybean (Glycine max) seed/seedlings, leaves, and chloroplasts of leaves required detergent solubilization for maximum in vitro activity. On a per milligram of protein basis, more HPLS activity was found in leaves, especially chloroplasts, than in seeds or seedlings. The total yi...

journal_title：Plant physiology

authors： Gardner HW,Weisleder D,Plattner RD

更新日期：1991-11-01 00:00:00

abstract：:In recent years, access to complete genomic sequences, coupled with rapidly accumulating data related to RNA and protein expression patterns, has made it possible to determine comprehensively how genes contribute to complex phenotypes. However, for major crop plants, publicly available, standard platforms for parallel...

journal_title：Plant physiology

authors： Close TJ,Wanamaker SI,Caldo RA,Turner SM,Ashlock DA,Dickerson JA,Wing RA,Muehlbauer GJ,Kleinhofs A,Wise RP

更新日期：2004-03-01 00:00:00

abstract：:During phosphate starvation, Snf1-related kinase 1 (SnRK1) activity significantly decreases compared with plants growing under normal nutritional conditions. An analysis of the expression of the genes encoding for the catalytic subunits of SnRK1 showed that these subunits were not affected by phosphate starvation. Tra...

journal_title：Plant physiology

authors： Fragoso S,Espíndola L,Páez-Valencia J,Gamboa A,Camacho Y,Martínez-Barajas E,Coello P

更新日期：2009-04-01 00:00:00

abstract：:A proteinase was purified from germinated barley (green malt from Hordeum vulgare L. cv Morex) by acidic extraction, ammonium sulfate fractionation and successive chromatographies on CM-cellulose, hemoglobin sepharose, Sephadex G-75 and organomercurial agarose columns. The overall purification and final recovery were ...

journal_title：Plant physiology

authors： Poulle M,Jones BL

更新日期：1988-12-01 00:00:00

abstract：:Hydrogen-1 nuclear magnetic resonance spectroscopy was used to study water allocation in cell compartments of sun and shade leaves. NMR spectra of Acer platanoides were resolved into two peaks that were assigned to chloroplast and nonchloroplast water. Sun leaves contained 1.7 times more water per unit area of surface...

journal_title：Plant physiology

authors： McCain DC,Croxdale J,Markley JL

更新日期：1988-01-01 00:00:00

abstract：:Coupling factor particles are associated with membranes of maize etioplasts (Lockshin et al., 1971. Biochim. Biophys. Acta 226: 366-382). In addition, several, but not all, of the polypeptides found in the photosynthetic lamellae of maize chloroplasts are present in etioplasts.During the photoregulated maturation of c...

journal_title：Plant physiology

authors： Forger JM,Bogorad L

更新日期：1973-11-01 00:00:00

abstract：:While the importance of cell type specificity in plant adaptive responses is widely accepted, only a limited number of studies have addressed this issue at the functional level. We have combined electrophysiological, imaging, and biochemical techniques to reveal the physiological mechanisms conferring higher sensitivi...

journal_title：Plant physiology

authors： Shabala L,Zhang J,Pottosin I,Bose J,Zhu M,Fuglsang AT,Velarde-Buendia A,Massart A,Hill CB,Roessner U,Bacic A,Wu H,Azzarello E,Pandolfi C,Zhou M,Poschenrieder C,Mancuso S,Shabala S

更新日期：2016-12-01 00:00:00

abstract：:The influence of light or darkness on stomatal opening in epidermal strips of Commelina benghalensis was evaluated in the presence or absence of O(2) and/or metabolic inhibitors. Opening was restricted in nitrogen and was promoted by NADH and acids of the tricarboxylic acid cycle (succinate and alpha-ketoglutarate) in...

journal_title：Plant physiology

authors： Raghavendra AS

更新日期：1981-02-01 00:00:00

abstract：:In leaves of two starch-related single-knockout lines lacking either the cytosolic transglucosidase (also designated as disproportionating enzyme 2, DPE2) or the maltose transporter (MEX1), the activity of the plastidial phosphorylase isozyme (PHS1) is increased. In both mutants, metabolism of starch-derived maltose i...

journal_title：Plant physiology

authors： Malinova I,Mahlow S,Alseekh S,Orawetz T,Fernie AR,Baumann O,Steup M,Fettke J

更新日期：2014-02-01 00:00:00

abstract：:Root growth is mainly determined by cell division and subsequent elongation in the root apical area. Components regulating cell division in root meristematic cells are largely unknown. Previous studies have identified rice (Oryza sativa) ROOT ARCHITECTURE ASSOCIATED1 (OsRAA1) as a regulator in root development. Yet, t...

journal_title：Plant physiology

authors： Han Y,Cao H,Jiang J,Xu Y,Du J,Wang X,Yuan M,Wang Z,Xu Z,Chong K

更新日期：2008-10-01 00:00:00

abstract：:Nuclear pore complexes (NPCs) mediate the transport of RNA and other cargo between the nucleus and the cytoplasm. In vertebrates, the NPC protein TRANSLOCATED PROMOTER REGION (TPR) is associated with the inner filaments of the nuclear basket and is thought to serve as a scaffold for the assembly of transport machinery...

journal_title：Plant physiology

authors： Jacob Y,Mongkolsiriwatana C,Veley KM,Kim SY,Michaels SD

更新日期：2007-07-01 00:00:00

abstract：:We have used (13)C-labeled sugars and nuclear magnetic resonance (NMR) spectrometry to study the metabolic pathway of starch biosynthesis in developing wheat grain (Triticum aestivum cv Mardler). Our aim was to examine the extent of redistribution of (13)C between carbons atoms 1 and 6 of [1-(13)C] or [6-(13)C]glucose...

journal_title：Plant physiology

authors： Keeling PL,Wood JR,Tyson RH,Bridges IG

更新日期：1988-06-01 00:00:00

abstract：:Two inhibitory fractions (B(1) and C) from extracts of immature fruit of carob were tested for their ability to inhibit the action of indoleacetic acid (IAA) in three bioassays. There was no reduction of IAA-induced reactions in the Avena curvature test, abscission of debladed coleus petioles, or growth of cucumber hy...

journal_title：Plant physiology

authors： Corcoran MR

更新日期：1970-10-01 00:00:00

abstract：:Plant acclimation to growth light environment has been studied extensively; however, the majority of these studies have focused on light intensity and photo-acclimation, with few studies exploring the impact of dynamic growth light on stomatal acclimation and behavior. To assess the impact of growth light regime on st...

journal_title：Plant physiology

authors： Matthews JSA,Vialet-Chabrand S,Lawson T

更新日期：2018-03-01 00:00:00

abstract：:The cis-regulatory regions on DNA serve as binding sites for proteins such as transcription factors and RNA polymerase. The combinatorial interaction of these proteins plays a crucial role in transcription initiation, which is an important point of control in the regulation of gene expression. We present here an analy...

journal_title：Plant physiology

authors： Morey C,Mookherjee S,Rajasekaran G,Bansal M

更新日期：2011-07-01 00:00:00

abstract：:We have identified a wall hydrolytic enzyme from Trichoderma reesei with potent ability to induce extension of heat-inactivated type I cell walls. It is a small (23-kD) endo-1,4-beta-glucanase (Cel12A) belonging to glycoside hydrolase family 12. Extension of heat-inactivated walls from cucumber (Cucumis sativus cv Bur...

journal_title：Plant physiology

authors： Yuan S,Wu Y,Cosgrove DJ

更新日期：2001-09-01 00:00:00

abstract：:The presence of tonoplast ion channels regulated by voltage in the physiological range of transtonoplast electric potential was studied in isolated vacuoles from Acer pseudoplatanus cultured cells. In symmetrical KCl or K-gluconate depolarizing pulses induced instantaneously developing, decaying outward currents, whil...

journal_title：Plant physiology

authors： Colombo R,Cerana R,Lado P

更新日期：1990-05-01 00:00:00

abstract：:Rootless soybean (Glycine max) seedlings were used as a test system to examine the action of auxin on chromatin-directed RNA synthesis. Chromatin from the basal tissue of rootless seedlings (both control and auxin-treated) had RNA synthetic capacity similar to that of chromatin from comparably treated intact seedlings...

journal_title：Plant physiology

authors： Holm RE,Key JL

更新日期：1971-05-01 00:00:00

abstract：:The protein synthesis elongation factor 1A (eEF1A) is a multifunctional protein in eukaryotic cells. In maize (Zea mays L.) endosperm eEF1A co-localizes with actin around protein bodies, and its accumulation is highly correlated with the protein-bound lysine (Lys) content. We purified eEF1A from maize kernels by ammon...

journal_title：Plant physiology

authors： Sun Y,Carneiro N,Clore AM,Moro GL,Habben JE,Larkins BA

更新日期：1997-11-01 00:00:00

abstract：:Nucleotide metabolism in potato (Solanum tuberosum) mitochondria was studied using 31P-nuclear magnetic resonance spectroscopy and the O2 electrode. Immediately following the addition of ADP, ATP synthesis exceeded the rate of oxidative phosphorylation, fueled by succinate oxidation, due to mitochondrial adenylate kin...

journal_title：Plant physiology

authors： Roberts J,Aubert S,Gout E,Bligny R,Douce R

更新日期：1997-01-01 00:00:00

abstract：:The soluble proteins of C(3) and C(4) mesophyll chloroplasts and C(4) bundle sheath extracts have been analyzed by gel electrophoresis for fraction I protein. Gel scans of soluble protein from C(4) bundle sheath extracts and C(3) mesophyll chloroplasts showed typical fraction I protein peaks that could be identified b...

journal_title：Plant physiology

authors： Huber SC,Hall TC,Edwards GE

更新日期：1976-05-01 00:00:00

abstract：:This study examines the capacity of intact spinach (Spinacia oleracea L.) chloroplasts to fix (14)CO(2) when supplied with Benson-Calvin cycle intermediates in the presence of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU). Under these conditions, substantial (14)CO(2) fixation occurred in the light but not in the dar...

journal_title：Plant physiology

authors： Woo KC,Gerbaud A,Furbank RT

更新日期：1983-06-01 00:00:00

abstract：:Intact spinach (Spinacia oleracea) chloroplasts, thylakoid membranes, and inside-out or right-side-out thylakoid vesicles have been characterized by flow cytometry with respect to forward angle light scatter, right angle light scatter, and chlorophyll fluorescence. Analysis of intact chloroplasts with respect to forwa...

journal_title：Plant physiology

authors： Schröder WP,Petit PX

更新日期：1992-11-01 00:00:00

abstract：:Young plants of five Nicotiana tabacum L. genotypes were examined for activity of nicotine biosynthetic enzymes. Genotypes near isogenic except at two loci each with two alleles controlling nicotine level were used in a comparison of the four homozygous allelic combinations producing high, high intermediate, low inter...

journal_title：Plant physiology

authors： Saunders JW,Bush LP

更新日期：1979-08-01 00:00:00

abstract：:Plant development requires regulation of both cell division and differentiation. The class 1 KNOTTED1-like homeobox (KNOX) genes such as knotted1 (kn1) in maize (Zea mays) and SHOOTMERISTEMLESS in Arabidopsis (Arabidopsis thaliana) play a role in maintaining shoot apical meristem indeterminacy, and their misexpression...

journal_title：Plant physiology

authors： Kessler S,Townsley B,Sinha N

更新日期：2006-08-01 00:00:00

abstract：:Within branched root systems, a distinct heterogeneity of traits exists. Knowledge about the ecophysiology of different root types is critical to understand root system functioning. Classification schemes have to match functional root types as closely as possible to be used for sampling and modeling. Among ecophysiolo...

journal_title：Plant physiology

authors： Rewald B,Rechenmacher A,Godbold DL

更新日期：2014-10-01 00:00:00

abstract：:Changes in the physical state of microsomal membrane lipids during senescence of rose flower petals (Rosa hyb. L. cv Mercedes) were measured by x-ray diffraction analysis. During senescence of cut flowers held at 22 degrees C, lipid in the ordered, gel phase appeared in the otherwise disordered, liquid-crystalline pha...

journal_title：Plant physiology

authors： Faragher JD,Wachtel E,Mayak S

更新日期：1987-04-01 00:00:00

abstract：:High-throughput genotype screening is rapidly becoming a standard research tool in the post-genomic era. A major bottleneck currently exists, however, that limits the utility of this approach in the plant sciences. The rate-limiting step in current high-throughput pipelines is that tissue samples from living plants mu...

journal_title：Plant physiology

authors： Krysan P

更新日期：2004-07-01 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