Regulation of Pyrimidine Biosynthesis in Intact Cells of Cucurbita pepo.

abstract：:The growth of transgenic tomato (Lycopersicon esculentum) plants that express in their apoplast yeast invertase under the control of the cauliflower mosaic virus 35S promoter is severely inhibited. The higher the level of invertase, the greater the inhibition of growth. A second phenotypic characteristic of these tran...

journal_title：Plant physiology

authors： Dickinson CD,Altabella T,Chrispeels MJ

更新日期：1991-02-01 00:00:00

abstract：:Levels of gibberillins (GAs) and of abscisic acid (ABA) in attached leaves of romaine lettuce (Lactuca sativa L.) declined as the leaf became older. The time course of changes in hormone levels, determined in detached lettuce leaves kept in darkness, revealed that a sharp decline in GAs accompanied by a moderate rise ...

journal_title：Plant physiology

authors： Aharoni N

更新日期：1978-08-01 00:00:00

abstract：:Ultraviolet B light (UV-B; 280-320 nm) perception and signaling are well-known phenomena in plants, although no specific UV-B photoreceptors have yet been identified. We previously reported on the root UV-B sensitive1 (rus1) mutants in Arabidopsis (Arabidopsis thaliana), which display a block to development under very...

journal_title：Plant physiology

authors： Leasure CD,Tong H,Yuen G,Hou X,Sun X,He ZH

更新日期：2009-08-01 00:00:00

abstract：:Enzymic treatment of mature, anthocyanin-containing grape berry sub-epidermal tissues from DeChaunac grapes released intact protoplasts. Filtration of the protoplast suspension through glass wool under mild suction resulted in the release of vacuoles. The total and individual contents of anthocyanins, flavonol glycosi...

journal_title：Plant physiology

authors： Moskowitz AH,Hrazdina G

更新日期：1981-09-01 00:00:00

abstract：:A hybrid of sweet corn, Zea mays L. (;1720'; Rogers Brothers Seed Co.), was found to be comprised of glycinebetaine-positive and glycinebetaine-deficient individuals in a 1:1 mixture. This phenomenon was traced to segregation for a single, nuclear, dominant gene determining leaf glycinebetaine content within the femal...

journal_title：Plant physiology

authors： Rhodes D,Rich PJ,Brunk DG,Ju GC,Rhodes JC,Pauly MH,Hansen LA

更新日期：1989-11-01 00:00:00

abstract：:Effects of red and blue light at irradiances from 1.6 to 28.3 micromolar per square meter per second on chloroplast pigments, light-harvesting pigment-proteins associated with photosystem II, and the corresponding mRNA were evaluated in maize (Zea mays L.) plants (OP Golden Bantum) grown for 14 days under 14 hours lig...

journal_title：Plant physiology

authors： Eskins K,Westhoff P,Beremand PD

更新日期：1989-09-01 00:00:00

abstract：:ATP, which is present in the extracellular matrix of multicellular organisms and in the extracellular fluid of unicellular organisms, has been shown to function as a signaling molecule in animals. The concentration of extracellular ATP (xATP) is known to be functionally modulated in part by ectoapyrases, membrane-asso...

journal_title：Plant physiology

authors： Thomas C,Sun Y,Naus K,Lloyd A,Roux S

更新日期：1999-02-01 00:00:00

abstract：:The cereal aleurone layer is a model system for studying the regulation of transcription by gibberellin (GA) and abscisic acid (ABA). GA stimulates and ABA prevents the transcription of genes for alpha-amylases and other secreted hydrolytic enzymes, but how GA and ABA affect the transcription of other genes is largely...

journal_title：Plant physiology

authors： Bethke PC,Hwang YS,Zhu T,Jones RL

更新日期：2006-02-01 00:00:00

abstract：:Alfalfa was grown hydroponically in 0, 0.6, and 4.8 millimolar K in order to determine the influence of tissue level of K on photosynthesis, dark respiration, photorespiration, stomatal and mesophyll resistance to CO(2), photosystem I and II activity, and synthesis and activity of ribulose 1,5-bisphosphate carboxylase...

journal_title：Plant physiology

authors： Peoples TR,Koch DW

更新日期：1979-05-01 00:00:00

abstract：:The levels of free and ester-linked indole-3-acetic acid (IAA) in different parts of the maize root were measured using gas chromatography-mass spectrometry (selected ion monitoring). In roots of 2-day-old plants, the distribution of free and ester IAA differed both along the root and between stele and cortex. The lev...

journal_title：Plant physiology

authors： Saugy M,Pilet PE

更新日期：1987-09-01 00:00:00

abstract：:In black cherry (Prunus serotina Ehrh.) homogenates, (R)-amygdalin is catabolized to HCN, benzaldehyde, and d-glucose by the sequential action of amygdalin hydrolase, prunasin hydrolase, and mandelonitrile lyase. The tissue and subcellular localizations of these enzymes were determined within intact black cherry seeds...

journal_title：Plant physiology

authors： Swain E,Li CP,Poulton JE

更新日期：1992-09-01 00:00:00

abstract：:The immediate short term effects on some physiological processes and the long term effects on morphology and reproductive development of root- and shoot-chilled soybeans (Glycine max L. cv Ransom) were studied. Roots or shoots of 16- or 17-day-old plants were chilled at 10 degrees C for one week, and then rewarmed to ...

journal_title：Plant physiology

authors： Musser RL,Thomas SA,Kramer PJ

更新日期：1983-11-01 00:00:00

abstract：:Small GTP-binding proteins regulate diverse processes in eukaryotic cells such as signal transduction, cell proliferation, cytoskeletal organization, and intracellular membrane trafficking. These proteins function as molecular switches that cycle between "active" and "inactive" states, and this cycle is linked to the ...

journal_title：Plant physiology

authors： Vernoud V,Horton AC,Yang Z,Nielsen E

更新日期：2003-03-01 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：:Glycine decarboxylase (GDC) plays an important role in the photorespiratory metabolism of plants. GDC is composed of four subunits (P, H, L, and T) with the P-subunit (GLDP) serving as the actual decarboxylating unit. In C(3) plants, GDC can be found in all photosynthetic cells, whereas in leaves of C(3)-C(4) intermed...

journal_title：Plant physiology

authors： Engelmann S,Wiludda C,Burscheidt J,Gowik U,Schlue U,Koczor M,Streubel M,Cossu R,Bauwe H,Westhoff P

更新日期：2008-04-01 00:00:00

abstract：:In this article, we demonstrate the connection between intracellular iron storage and oxidative stress response in cyanobacteria. Iron is essential for the survival of all organisms. However, the redox properties that make iron a valuable cofactor also lead to oxidative interactions, resulting in the formation of harm...

journal_title：Plant physiology

authors： Shcolnick S,Summerfield TC,Reytman L,Sherman LA,Keren N

更新日期：2009-08-01 00:00:00

abstract：:We used a small oxygen electrode and a grating monochromator of 10 mmu half-band width to determine light-saturation curves of photosynthesis for films of Chlorella pyrenoidosa no more than 1 cell thick. All curves were referenced to the lightsaturated rate observed in 5 mw/cm(2) of 680 mmu. To a close approximation (...

journal_title：Plant physiology

authors： Pickett JM,Myers J

更新日期：1966-01-01 00:00:00

abstract：:Of the four genes of the Arabidopsis (Arabidopsis thaliana) INOSITOL TRANSPORTER family (AtINT family) so far only AtINT4 has been described. Here we present the characterization of AtINT2 and AtINT3. cDNA sequencing revealed that the AtINT3 gene is incorrectly spliced and encodes a truncated protein of only 182 amino...

journal_title：Plant physiology

authors： Schneider S,Schneidereit A,Udvardi P,Hammes U,Gramann M,Dietrich P,Sauer N

更新日期：2007-12-01 00:00:00

abstract：:Potato (Solanum tuberosum L. cv Saturna) plants were grown in pots with varying supplies of K fertilizer (1.25, 5, and 10 grams K(2)O per 12 kilograms soil). Four weeks after midflower, plants were supplied with (14)CO(2) for 12 hours and osmotic and water potential in tubers were determined. Assimilation of (14)CO(2)...

journal_title：Plant physiology

authors： Beringer H,Haeder HE,Lindhauer M

更新日期：1983-12-01 00:00:00

abstract：:Peroxygenase-catalyzed epoxidation of oleic acid in preparations of cereal seeds was investigated. The 105,000g particle fraction of oat (Avena sativa) seed homogenate showed high peroxygenase activity, i.e. 3034 [plus or minus] 288 and 2441 [plus or minus] 168 nmol (10 min)-1 mg-1 protein in two cultivars, whereas th...

journal_title：Plant physiology

authors： Hamberg M,Hamberg G

更新日期：1996-03-01 00:00:00

abstract：:The shapes of leaves are dynamic, changing over evolutionary time between species, within a single plant producing different shaped leaves at successive nodes, during the development of a single leaf as it allometrically expands, and in response to the environment. Notably, strong correlations between the dissection a...

journal_title：Plant physiology

authors： Chitwood DH,Rundell SM,Li DY,Woodford QL,Yu TT,Lopez JR,Greenblatt D,Kang J,Londo JP

更新日期：2016-03-01 00:00:00

abstract：:With the aid of an extracellular vibrating electrode, natural electric fields were detected and measured in the medium near growing roots and root hairs of barley seedlings. An exploration of these fields indicates that both the root as a whole, as well as individual root hairs, drive large steady currents through the...

journal_title：Plant physiology

authors： Weisenseel MH,Dorn A,Jaffe LF

更新日期：1979-09-01 00:00:00

abstract：:Three fractions (male germ unit [MGU]-rich, cytoplasmic-particulate and water-soluble proteins) were isolated from pollen of Plumbago zeylanica L. Proteins were extracted using a phenol procedure and polypeptide patterns were compared on one- and two-dimensional polyacrylamide gels. The MGU-rich fraction contains the ...

journal_title：Plant physiology

authors： Geltz NR,Russell SD

更新日期：1988-11-01 00:00:00

abstract：:It has been reported that hydroxyphenylethylamines, such as tyramine and octopamine, are toxic to tobacco (Nicotiana tabacum L.) callus cultures grown in the presence of auxins, whereas calli grown in the presence of cytokinins and crown gall cultures are resistant to these amines (P. Christou and K.A. Barton [1989] P...

journal_title：Plant physiology

authors： Negrel J,Javelle F,Paynot M

更新日期：1993-10-01 00:00:00

abstract：:The red light requirement for positive gravitropism in roots of corn (Zea mays cv "Merit") provides an entry for examining the participation of calcium in gravitropism. Applications of calcium chelators inhibit the light response. Calcium channel blockers (verapamil, lanthanum) can also inhibit the light response, a...

journal_title：Plant physiology

authors： Perdue DO,LaFavre AK,Leopold AC

更新日期：1988-01-01 00:00:00

abstract：:Removal of the lower epidermis from a tobacco leaf allows a faster and wider range of water fluxes, without damaging the mesophyll. It also permits a more direct examination of the photosynthetic potential of the tissue at various levels of hydration.The rehydration rate of leaf discs is essentially linear. It decreas...

journal_title：Plant physiology

authors： Graziani Y,Livne A

更新日期：1971-11-01 00:00:00

abstract：:Extracts of immature kernels of Zea mays L. catalyzed the synthesis of indol-3-yl-acetyl-myo-inositol arabinoside from indol-3-yl-acetyl-myo-inositol and UDP-[U-(14)C]xylose. The product contained radioactivity which upon hydrolysis with trifluoroacetic acid cochromatographed with arabinose and not xylose. The amount ...

journal_title：Plant physiology

authors： Corcuera LJ,Bandurski RS

更新日期：1982-12-01 00:00:00

abstract：:Isogenic lines of pea (Pisum sativum L.) were used to determine the physiological site of action of the Rms-2 gene, which maintains apical dominance, and its effect on endogenous free indole-3-acetic acid (IAA) levels. In mutant rms-2 scions, which normally produce lateral branches below node 3 and above node 7, apica...

journal_title：Plant physiology

authors： Beveridge CA,Ross JJ,Murfet IC

更新日期：1994-03-01 00:00:00

abstract：:Previously we showed that acid invertase activity increased and then decreased rapidly in wounded sweet potato (Ipomoea batatas Liam.) root tissue, and that the tissue contained a heat-stable, proteinaceous inhibitor with a molecular weight of about 19,500 daltons.In response to wounding of sweet potato root tissue, i...

journal_title：Plant physiology

authors： Matsushita K,Uritani I

更新日期：1977-05-01 00:00:00

abstract：:The influence of polyploidization on chloroplast coupling factor 1 (CF1) was examined in leaves and leaf protoplasts from isogenic diploid-tetraploid (DDC 2X-4X) and tetraploid-octoploid (IC 4X-8X) sets of alfalfa (Medicago sativa L.). Alfalfa CF1 was purified to homogeneity and was found to contain five subunits with...

journal_title：Plant physiology

authors： Meyers SP,Molin WT,Selman BR,Schrader LE

更新日期：1982-12-01 00:00:00