Multiple forms of plant cytochromes p-450.

abstract：:Amylase was found in high activity (193 international units per milligram protein) in the tap root of alfalfa (Medicago sativa L. cv. Sonora). The activity was separated by gel filtration chromatography into two fractions with molecular weights of 65,700 (heavy amylase) and 41,700 (light amylase). Activity staining of...

journal_title：Plant physiology

authors： Doehlert DC,Duke SH,Anderson L

更新日期：1982-05-01 00:00:00

abstract：:The LOSS OF APOMEIOSIS (LOA) locus is one of two dominant loci known to control apomixis in the eudicot Hieracium praealtum. LOA stimulates the differentiation of somatic aposporous initial cells after the initiation of meiosis in ovules. Aposporous initial cells undergo nuclear proliferation close to sexual megaspore...

journal_title：Plant physiology

authors： Okada T,Ito K,Johnson SD,Oelkers K,Suzuki G,Houben A,Mukai Y,Koltunow AM

更新日期：2011-11-01 00:00:00

abstract：:Contrasting metabolic regimes operate in Opuntia basilaris Engelm. and Bigelov, before and after precipitation. During periods of drought, atmospheric CO(2) exchange and transpiration are greatly reduced throughout the day/night cycle by stomatal closure and a highly impervious cuticle. The hypothesis is that endogeno...

journal_title：Plant physiology

authors： Szarek SR,Johnson HB,Ting IP

更新日期：1973-12-01 00:00:00

abstract：:Tissues transformed with the isopentenyl transferase (ipt) gene cloned from the T-DNA region of the Ti plasmid or with the ipt gene placed under the control of the cauliflower mosaic virus 35S promoter (35S-ipt) were analyzed for auxin and cytokinin. Free and total indole-3-acetic acid (IAA) levels in 35S-ipt-transfor...

journal_title：Plant physiology

authors： Smigocki AC,Owens LD

更新日期：1989-11-01 00:00:00

abstract：:Formation of the chlorophyll and heme precursor delta-aminolevulinic acid (ALA) from glutamate in soluble extracts of Chlorella vulgaris, Euglena gracilis, and Cyanidium caldarium was stimulated by addition of low molecular weight RNA derived from greening algae or plant tissue. Enzyme extracts were prepared for the A...

journal_title：Plant physiology

authors： Weinstein JD,Mayer SM,Beale SI

更新日期：1986-12-01 00:00:00

abstract：:Cotyledons of light-grown soybean (Glycine max L. var Wayne) seedlings were used as a model system to study the possibility that aging requires qualitative changes in protein synthesis. Cotyledons reached a final stage of senescence and then abscised about 22 days after imbibition. Cotyledon senescence was reversed at...

journal_title：Plant physiology

authors： Skadsen RW,Cherry JH

更新日期：1983-04-01 00:00:00

abstract：:A novel mutant of Arabidopsis thaliana, arc6 (accumulation and replication of chloroplasts), has been isolated from a transfer DNA-mutagenized population of Arabidopsis seedlings. arc6 has the most extreme arc mutant phenotype we have yet described, with only one to three chloroplasts per leaf mesophyll cell compared ...

journal_title：Plant physiology

authors： Pyke KA,Rutherford SM,Robertson EJ,Leech RM

更新日期：1994-11-01 00:00:00

abstract：:The SNF1/AMPK/SnRK1 kinases are evolutionary conserved kinases involved in yeast, mammals, and plants in the control of energy balance. These heterotrimeric enzymes are composed of one alpha-type catalytic subunit and two gamma- and beta-type regulatory subunits. In yeast it has been proposed that the beta-type subuni...

journal_title：Plant physiology

authors： Polge C,Jossier M,Crozet P,Gissot L,Thomas M

更新日期：2008-11-01 00:00:00

abstract：:Isolated immature maize (Zea mays L.) embryos have been shown to acquire tolerance to rapid drying between 22 and 25 d after pollination (DAP) and to slow drying from 18 DAP onward. To investigate adaptations in protein profile in association with the acquisition of desiccation tolerance in isolated, immature maize em...

journal_title：Plant physiology

authors： Wolkers WF,Bochicchio A,Selvaggi G,Hoekstra FA

更新日期：1998-03-01 00:00:00

abstract：:Plants accumulate the lipids phosphatidic acid (PA), diacylglycerol (DAG), and triacylglycerol (TAG) during cold stress, but how plants balance the levels of these lipids to mediate cold responses remains unknown. The enzymes ACYL-COENZYME A:DIACYLGLYCEROL ACYLTRANSFERASE (DGAT) and DIACYLGLYCEROL KINASE (DGK) catalyz...

journal_title：Plant physiology

authors： Tan WJ,Yang YC,Zhou Y,Huang LP,Xu L,Chen QF,Yu LJ,Xiao S

更新日期：2018-07-01 00:00:00

abstract：:The sensitivity of lettuce (Lactuca sativa L. cv Grand Rapids) seeds to red light was reduced by NaCl concentrations which had no effect upon the germination of continuously illuminated seeds. The germination capacity of the seeds was fully restored by increased red light exposures. Indirect evidence indicates that Na...

journal_title：Plant physiology

authors： Scorer KN,Epel BL,Waisel Y

更新日期：1985-09-01 00:00:00

abstract：:Spike number per unit area, number of grains per spike, and thousand kernel weight (TKW) are important yield components. In China, increases in wheat (Triticum aestivum) yields are mainly due to increases in grain number per spike and TKW. TKW mainly depends on starch content, as starch accounts for about 70% of the g...

journal_title：Plant physiology

authors： Hou J,Jiang Q,Hao C,Wang Y,Zhang H,Zhang X

更新日期：2014-04-01 00:00:00

abstract：:Exposing hybrid poplar (Populus maximowizii x trichocarpa) plants to ozone (O3) resulted in an acceleration of the visual symptoms of senescence and a decrease in the activity and quantity of ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco). Whole plants, crude leaf extracts, and isolated intact chloroplasts ...

journal_title：Plant physiology

authors： Landry LG,Pell EJ

更新日期：1993-04-01 00:00:00

abstract：:The relationship between the state of oligomerization and activity of purified maize leaf phosphoenolpyruvate carboxylase using size exclusion high performance liquid chromatography was examined. Maximum activities of 35 to 38 micromoles per minute per milligram protein were found when 100% of the enzyme was in its te...

journal_title：Plant physiology

authors： Walker GH,Ku MS,Edwards GE

更新日期：1986-04-01 00:00:00

abstract：:Extraction of red beet root plasma membranes with the detergent Triton X-100 at a level of 2.0% (weight/volume) resulted in the depletion of over 90% of total membrane phospholipid and the reduction of glucan synthase activity by 80 to 90%. Reconstitution of the delipidated Triton X-100, 100,000g fraction in the prese...

journal_title：Plant physiology

authors： Wasserman BP,McCarthy KJ

更新日期：1986-10-01 00:00:00

abstract：:Auxin induction of the proliferation of Nicotiana tabacum (cv Xanthi) mesophyll protoplasts and of protoplast-derived cells was studied. The growth-promoting properties and cytotoxicities at high concentrations of IAA and naphthaleneacetic acid were strongly affected by cell density. The induction of growth by 2,4-dic...

journal_title：Plant physiology

authors： Caboche M,Aranda G,Poll AM,Huet JC,Leguay JJ

更新日期：1984-05-01 00:00:00

abstract：:A recognition molecule was isolated from stigmas of S-allele genotype S(2)S(2) of Brassica oleracea var. capitata L. After Sephadex chromatography, it eluted as a single symmetrical peak during diethylaminoethane-cellulose chromatography. A high degree of purity was affirmed by: sedimentation as a single peak during u...

journal_title：Plant physiology

authors： Ferrari TE,Bruns D,Wallace DH

更新日期：1981-02-01 00:00:00

abstract：:This study concerns the selective absorption of K and Rb or of K and Na by intact sugar beet (Beta vulgaris) plants from modified conventional nutrient solutions over an extended period of plant growth. Long term results agreed with those of short term experiments by other investigators using excised root systems and ...

journal_title：Plant physiology

authors： El-Sheikh AM,Broyer TC,Ulrich A

更新日期：1971-05-01 00:00:00

abstract：:Continuous wave nuclear magnetic resonance (NMR) studies indicated that the line width of the water absorption peak (Deltav(1/2)) from crowns of winter and spring wheat (Triticum aestivum L.) increased during cold acclimation. There was a negative correlation between Deltav(1/2) and crown water content, and both of th...

journal_title：Plant physiology

authors： Gusta LV,Fowler DB,Chen P

更新日期：1979-04-01 00:00:00

abstract：:A radiation-induced mutant of Scotch spearmint (Mentha x gracilis) was shown to produce an essential oil containing principally C3-oxygenated p-menthane monoterpenes that are typical of peppermint, instead of the C6-oxygenated monoterpene family characteristic of spearmint. In vitro measurement of all of the enzymes r...

journal_title：Plant physiology

authors： Croteau R,Karp F,Wagschal KC,Satterwhite DM,Hyatt DC,Skotland CB

更新日期：1991-07-01 00:00:00

abstract：:Phytases are the primary enzymes responsible for the hydrolysis of phytic acid, myo-inositol-1,2,3,4,5,6-hexakisphosphate (I-1,2,3,4,5,6-P6). A number of phytases with varying specificities, properties, and localizations hydrolyze phytic acid present in cells. The specificity of hydrolysis of phytic acid by alkaline p...

journal_title：Plant physiology

authors： Barrientos L,Scott JJ,Murthy PP

更新日期：1994-12-01 00:00:00

abstract：:Coupling of phosphorylation to electron transport was examined by measuring the photosynthetic control ratio for broken wheat plastids isolated from seedlings at different greening stages. The photosynthetic control ratio progressively increased during greening and tight coupling was noted after granal stacking and th...

journal_title：Plant physiology

authors： Duysen ME,Freeman TP,Zabrocki RD

更新日期：1980-05-01 00:00:00

abstract：:With an experimental system developed for aquatic plants using the mass spectrometry technique and infrared gas analysis of CO(2), we studied the responses to various O(2) concentrations of gas exchanges with the red macroalga Chondrus crispus S. The results were as follows. (a) Irrespective of the CO(2) concentration...

journal_title：Plant physiology

authors： Brechignac F,Andre M

更新日期：1985-07-01 00:00:00

abstract：:An enzyme with fatty acid alpha-oxidation activity (49 nkat mg(-1); substrate: lauric acid) was purified from germinating pea (Pisum sativum) by a five-step procedure to apparent homogeneity. The purified protein was found to be a 230-kD oligomer with two dominant subunits, i.e. a 50-kD subunit with NAD(+) oxidoreduct...

journal_title：Plant physiology

authors： Saffert A,Hartmann-Schreier J,Schön A,Schreier P

更新日期：2000-08-01 00:00:00

abstract：:Euglena gracilis (1224-5/9) contains phosphoenolpyruvate carboxykinase when grown autotrophic with CO(2) in the light. Its yield is higher when an additional carbon source like glucose has been added. The enzyme is lacking in cells provided with CO(2) alone and kept in the dark, whereas highest yields result if both g...

journal_title：Plant physiology

authors： Pönsgen-Schmidt E,Schneider T,Hammer U,Betz A

更新日期：1988-02-01 00:00:00

abstract：:The membrane resistivity of resting characean cells was measured and found to fluctuate unpredictably about its resting level. The amplitude of these fluctuations relative to the mean resistivity was normally somewhat larger than the same ratio for the vacuolar voltage; further the resistivity and voltage fluctuations...

journal_title：Plant physiology

authors： Gokhale AV,Pickard WF

更新日期：1985-11-01 00:00:00

abstract：:Preliminary results from differential centrifugation experiments, washing treatments, and enrichment in linear sucrose gradients at a density of 1.09 grams per cubic centimeter all indicated that beta-glucosidase activity in corn root homogenates was associated with a membrane such as tonoplast. A subsequent sucrose d...

journal_title：Plant physiology

authors： Nagahashi G,Baker AF

更新日期：1984-12-01 00:00:00

abstract：:A technique is presented for the isolation of vacuoles from Sedum telephium L. leaves. Leaf material is digested enzymically to produce protoplasts rapidly which are partially lysed by gentle osmotic shock and the inclusion of 5 millimolar ethyleneglycol-bis (beta-aminoethyl ether)N,N'-tetraacetic acid in the wash med...

journal_title：Plant physiology

authors： Kringstad R,Kenyon WH,Black CC

更新日期：1980-09-01 00:00:00

abstract：:We previously demonstrated that overexpression of the horseradish (Armoracia rusticana) peroxidase prxC1a gene stimulated the growth rate of tobacco (Nicotiana tabacum) plants. Here, the cauliflower mosaic virus 35S::prxC1a construct was introduced into hybrid aspen (Populus sieboldii x Populus grandidentata). The gro...

journal_title：Plant physiology

authors： Kawaoka A,Matsunaga E,Endo S,Kondo S,Yoshida K,Shinmyo A,Ebinuma H

更新日期：2003-07-01 00:00:00

abstract：:The triphosphate tunnel metalloenzyme (TTM) superfamily comprises a group of enzymes that hydrolyze organophosphate substrates. They exist in all domains of life, yet the biological role of most family members is unclear. Arabidopsis (Arabidopsis thaliana) encodes three TTM genes. We have previously reported that AtTT...

journal_title：Plant physiology

authors： Ung H,Karia P,Ebine K,Ueda T,Yoshioka K,Moeder W

更新日期：2017-09-01 00:00:00