l-Ornithine:2-Oxoacid Aminotransferase from Squash (Cucurbita pepo, L.) Cotyledons: Purification and Properties.

abstract：:The genome of the budding yeast (Saccharomyces cerevisiae) provides an important paradigm for transgenomic comparisons with other eukaryotic species. Here, we report a systematic comparison of the protein kinases of yeast (119 kinases) and a reference plant Arabidopsis (1,019 kinases). Using a whole-protein-based, hie...

journal_title：Plant physiology

authors： Wang D,Harper JF,Gribskov M

更新日期：2003-08-01 00:00:00

abstract：:Chlorophyll degradation plays important roles in leaf senescence including regulation of degradation of chlorophyll-binding proteins. Although most genes encoding enzymes of the chlorophyll degradation pathway have been identified, the regulation of their activity has not been fully understood. Green cotyledon mutants...

journal_title：Plant physiology

authors： Kohzuma K,Sato Y,Ito H,Okuzaki A,Watanabe M,Kobayashi H,Nakano M,Yamatani H,Masuda Y,Nagashima Y,Fukuoka H,Yamada T,Kanazawa A,Kitamura K,Tabei Y,Ikeuchi M,Sakamoto W,Tanaka A,Kusaba M

更新日期：2017-04-01 00:00:00

abstract：:The aim of this study was to characterize the effect of decreased 2-cysteine peroxiredoxin (2-CP) on the leaf anti-oxidative system in Arabidopsis. At three stages of leaf development, two lines of transgenic Arabidopsis mutants with decreased contents of chloroplast 2-CP were compared with wild type and a control lin...

journal_title：Plant physiology

authors： Baier M,Noctor G,Foyer CH,Dietz KJ

更新日期：2000-10-01 00:00:00

abstract：:Red light-induced changes in the gravitropism of roots of Zea mays variety Merit is a very low fluence response with a threshold of 10(-9) moles per square meter and is not reversible by far red light. Blue light also affects root gravitropism but the sensitivity of roots to blue is 50 to 100 times less than to an eq...

journal_title：Plant physiology

authors： Feldman LJ,Briggs WR

更新日期：1987-01-01 00:00:00

abstract：:Photosynthetic (14)CO(2) fixation, [(14)C]glycolate formation, and the decarboxylation of [1-(14)C]glycolate and [1-(14)C]glycine by leaf mesophyll protoplasts isolated from isogenic diploid and tetraploid cultivars of ryegrass (Lolium perenne L.) were examined. The per cent O(2) inhibition of photosynthesis in protop...

journal_title：Plant physiology

authors： Rathnam CK,Chollet R

更新日期：1980-03-01 00:00:00

abstract：:Root nodules were harvested from chamber-grown soybean (Glycine max L. Merrill cv Woodworth) plants throughout development. Apparent nitrogenase activity (acetylene reduction) peaked before seeds began to develop, but a significant amount of activity remained as the seeds matured. Nodule senescence was defined as the ...

journal_title：Plant physiology

authors： Pfeiffer NE,Torres CM,Wagner FW

更新日期：1983-04-01 00:00:00

abstract：:Computing techniques are used to simulate the course of uptake of K(+), Na(+), and Cl(-) by low-salt roots. Measurements of the fluxes of these ions in high-salt roots are used to calculate membrane permeabilities, which are then used to calculate cell uptake. In this way it is possible to test the predictive value of...

journal_title：Plant physiology

authors： Pitman MG

更新日期：1969-10-01 00:00:00

abstract：:Phycobilisomes of Tolypothrix tenuis, a cyanobacterium capable of complete chromatic adaptation, were studied from cells grown in red and green light, and in darkness. The phycobilisome size remained constant irrespective of the light quality. The hemidiscoidal phycobilisomes had an average diameter of about 52 nanome...

journal_title：Plant physiology

authors： Ohki K,Gantt E,Lipschultz CA,Ernst MC

更新日期：1985-12-01 00:00:00

abstract：:The succulent leaf of the obligate Crassulacean acid metabolism plant Crassula falcata comprises two distinct types of parenchyma. The peripheral tissue is dark green, whereas the central tissue is relatively colorless. We have investigated whether the conventional interpretation of Crassulacean acid metabolism-simply...

journal_title：Plant physiology

authors： Springer SA,Outlaw WH

更新日期：1988-11-01 00:00:00

abstract：:DNA replication was studied in nuclei isolated from soybean cells grown in suspension culture. The isolation procedure involved the preparation of protoplasts, their lysis with a nonionic detergent and purification of nuclei. These nuclei synthesized low molecular weight DNA and joined these fragments into DNA of inte...

journal_title：Plant physiology

authors： Roman R

更新日期：1980-10-01 00:00:00

abstract：:Enzyme assays on organelles isolated from the endosperm of germinating castor bean (Ricinus communis) by sucrose density gradient centrifugation showed that fatty acid synthesis from [(14)C]malonyl-CoA was localized exclusively in the plastids. The optimum pH was 7.7 and the products was mainly free palmitic and oleic...

journal_title：Plant physiology

authors： Vick B,Beevers H

更新日期：1978-08-01 00:00:00

abstract：:The capacity of sodium orthovanadate to inhibit the plasmalemma H(+) ATPase of Nitella translucens internodal cells in vivo was tested. Here we show that 1 millimolar vanadate added externally depolarizes strongly and permanently the membrane potential, both in dark and light, to the Nernst potential for potassium con...

journal_title：Plant physiology

authors： Cruz-Mireles RM,Ortega-Blake I

更新日期：1991-05-01 00:00:00

abstract：:Starch accumulation and sucrose synthesis and export were measured in leaves of sugar beet (Beta vulgaris L.) during a period of prolonged irradiance in which illumination was extended beyond the usual 14-hour day period. During much of the 14-hour day period, approximately 50% of the newly fixed carbon was distribute...

journal_title：Plant physiology

authors： Li B,Geiger DR,Shieh WJ

更新日期：1992-08-01 00:00:00

abstract：:The role of roots in the enhancement of cytokinin content and leaf growth of Phaseolus vulgaris plants after decapitation and partial defoliation was investigated. Partial excision of the roots of plants which were decapitated above the primary leaf node resulted in a reduction of leaf growth and soluble proteins accu...

journal_title：Plant physiology

authors： Carmi A,Staden JV

更新日期：1983-09-01 00:00:00

abstract：:Branched-chain 2-oxo acids which are formed by transamination of leucine, isoleucine, and valine are metabolized by the peroxisomes from mung bean (Vigna radiata L.) hypocotyls. Acylcoenzyme A (CoA) thio ester intermediates of the pathways were separated by reversed-phase high performance liquid chromatography. Retent...

journal_title：Plant physiology

authors： Gerbling H,Gerhardt B

更新日期：1989-12-01 00:00:00

abstract：:Water, osmotic, and pressure potentials of soybean (Glycine max [L.] Merrill) embryos and related maternal tissues were measured during periods of seed growth and maturation to test the involvement of embryo water relations in seed maturation. Seeds were matured in situ or in an in vitro liquid culture medium in detac...

journal_title：Plant physiology

authors： Saab IN,Obendorf RL

更新日期：1989-02-01 00:00:00

abstract：:The mitochondrial flavoenzyme l-galactono-gamma-lactone dehydrogenase (GALDH) catalyzes the ultimate step of vitamin C biosynthesis in plants. We found that recombinant GALDH from Arabidopsis (Arabidopsis thaliana) is inactivated by hydrogen peroxide due to selective oxidation of cysteine (Cys)-340, located in the cap...

journal_title：Plant physiology

authors： Leferink NG,van Duijn E,Barendregt A,Heck AJ,van Berkel WJ

更新日期：2009-06-01 00:00:00

abstract：:Rates of net photosynthesis and translocation, CO(2) diffusive resistances, levels of carbohydrates, total protein, chlorophyll, and inorganic phosphate, and ribulose 1,5-diphosphate carboxylase activity were measured in soybean (Glycine max L. Merrill) leaves to ascertain the effect of altered assimilate demand. To i...

journal_title：Plant physiology

authors： Thorne JH,Koller HR

更新日期：1974-08-01 00:00:00

abstract：:Key developmental processes that occur on the subcellular and cellular level or occur in occluded tissues are difficult to access, let alone image and analyze. Recently, culturing living samples within polydimethylsiloxane (PDMS) microfluidic devices has facilitated the study of hard-to-reach developmental events. Her...

journal_title：Plant physiology

authors： Bascom CS Jr,Wu SZ,Nelson K,Oakey J,Bezanilla M

更新日期：2016-09-01 00:00:00

abstract：:A genomic fragment encoding one (HMGR1) of the three 3-hydroxy-3-methylglutaryl coenzyme A reductases (HMGRs) from Hevea brasiliensis (H.B.K.) Mull. Arg. (M.-L. Chye, C.-T. Tan, N.-H. Chua [1992] Plant Mol Biol 19: 473-484) was introduced into Nicotiana tabacum L. cv xanthi via Agrobacterium transformation to study th...

journal_title：Plant physiology

authors： Schaller H,Grausem B,Benveniste P,Chye ML,Tan CT,Song YH,Chua NH

更新日期：1995-11-01 00:00:00

abstract：:Several cell wall-bound glycosidases present in Avena sativa coleoptiles were assayed by following the hydrolysis of p-nitrophenyl-glycosides. Particular emphasis was placed on characterizing some parameters affecting the activity of beta-galactosidase. The pH optimum of this enzyme is 4.5 to 5.5; it is sensitive to c...

journal_title：Plant physiology

authors： Johnson KD,Daniels D,Dowler MJ,Rayle DL

更新日期：1974-02-01 00:00:00

abstract：:Bundle sheath strands and mesophyll cell extracts have been isolated from maize (Zea mays L.) leaves using a mechanical disruption-filtration technique. Northern blot analysis showed that phosphoenolpyruvate carboxylase (PEPCase; EC 4.1.1.31) mRNA accumulates only in mesophyll cells. The mechanisms regulating the cell...

journal_title：Plant physiology

authors： Martineau B,Taylor WC

更新日期：1986-10-01 00:00:00

abstract：:The occurrence of proteins able to oxidize polyphenols even in the absence of H2O2 was recently reported in mung bean (Vigna radiata L.) hypocotyl cell wall extracts (R. Goldberg, A. Chabanet, A.M. Catesson [1993] In K.G. Welinder, S.K. Rasmussen, C. Penel, H. Greppin, eds, Plant Peroxidases: Biochemistry and Physiolo...

journal_title：Plant physiology

authors： Chabanet A,Goldberg R,Catesson AM,Quinet-Szely M,Delaunay AM,Faye L

更新日期：1994-11-01 00:00:00

abstract：:The course of senescence in the first leaves of light-grown Avena seedlings when attached to the plant has been compared with that previously studied in detached leaves and leaf segments. Proteolysis in the leaf, whether attached or detached, is accompanied by markedly polar basipetal transport of amino acids. This po...

journal_title：Plant physiology

authors： Thimann KV,Tetley RR,Van Thanh T

更新日期：1974-12-01 00:00:00

abstract：:Seeds of paper birch (Betula papyrifera Marsh.) were induced to germinate by prechilling at 3 C or by red light. The light requirement was mediated by phytochrome and the action of phytochrome during prechilling was investigated. Red irradiation (R) prior to prechilling markedly enhanced the effectiveness of the prech...

journal_title：Plant physiology

authors： Bevington JM

更新日期：1981-04-01 00:00:00

abstract：:During the early stages of seed development, Arabidopsis (Arabidopsis thaliana) endosperm is syncytial and proliferates rapidly through repeated rounds of mitosis without cytokinesis. This stage of endosperm development is important in determining final seed size and is a model for studying aspects of cellular and mol...

journal_title：Plant physiology

authors： Day RC,Herridge RP,Ambrose BA,Macknight RC

更新日期：2008-12-01 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：:The growth of lateral buds (tillers), which are undergoing release from apical dominance, was measured in upright and gravistimulated intact Avena sativa L. cv. ;Victory' (oat) shoots as well as in isolated Avena stem segments treated with kinetin and sucrose. During release, the tiller bud initially shows a slow rate...

journal_title：Plant physiology

authors： Harrison MA,Kaufman PB

更新日期：1982-09-01 00:00:00

abstract：:A chlorophyll (Chl)-protein complex designated CPVI-4 becomes the major pigment-protein complex in Synechococcus sp. PCC7942 cells grown under conditions of iron limitation. Work by Laudenbach et al. (J Bacteriol [1988] 170: 5018-5026) has identified an iron-repressible operon, designated isiAB, containing the flavodo...

journal_title：Plant physiology

authors： Burnap RL,Troyan T,Sherman LA

更新日期：1993-11-01 00:00:00

abstract：:Meristematic tissues from rye (Secale cereale) and oat (Avena sativa) were studied in an isothermal calorimeter at -3 degrees C. When the frozen tissue was placed in the calorimeter, the pressure increased within 4 d to 25 and 9 kPa above ambient pressure in the sample vessels containing crowns of rye and oat, respect...

journal_title：Plant physiology

authors： Livingston DP 3rd,Olien CR,Premakumar R

更新日期：2000-03-01 00:00:00