Role of the Cotyledons in the Phototropic Response of Lavatera cretica Seedlings.

abstract：:The metabolism of d- and l-methionine by immature cotyledons of soybean (Glycine max, L. cv Elf) grown in culture has been investigated using solid-state (13)C and (15)N nuclear magnetic resonance. d-Methionine is taken up by the cotyledons and converted to an amide, most likely by N-malonylation. About 16% of the l-m...

journal_title：Plant physiology

authors： Coker GT,Garbow JR,Schaefer J

更新日期：1987-03-01 00:00:00

abstract：:The pedicel (basal maternal tissue) of maize (Zea mays L.) kernels contains a physically and kinetically unique form of glutamine synthetase (GSp1) that is involved in the conversion of transport forms of nitrogen into glutamine for uptake by the developing endosperm (M.J. Muhitch [1989] Plant Physiol 91: 868-875). A ...

journal_title：Plant physiology

authors： Muhitch MJ,Felker FC,Taliercio EW,Chourey PS

更新日期：1995-03-01 00:00:00

abstract：:We have characterized the gravitropic response of inflorescence stems in Arabidopsis thaliana. When the inflorescence stems were placed horizontally, they curved upward about 90 degrees within 90 min in darkness at 23 degrees C, exhibiting strong negative gravitropism. Decapitated stem segments (without all flowers, f...

journal_title：Plant physiology

authors： Fukaki H,Fujisawa H,Tasaka M

更新日期：1996-03-01 00:00:00

abstract：:Upon illumination of dark-grown maize seedlings (5 days old) with incandescent light, there occurred a nearly simultaneous increase, after a certain lag period, in the activities of enzymes engaged in the C(4) pathway and the Calvin-Benson cycle. The light-induced biosynthesis of chlorophyll (a and b) precedes the inc...

journal_title：Plant physiology

authors： Kobayashi H,Asami S,Akazawa T

更新日期：1980-02-01 00:00:00

abstract：:Serine hydroxymethyltransferase from mammalian and bacterial sources is a pyridoxal-5'-phosphate-containing enzyme, but the requirement of pyridoxal-5'-phosphate for the activity of the enzyme from plant sources is not clear. The specific activity of serine hydroxymethyltransferase isolated from mung bean (Vigna radia...

journal_title：Plant physiology

authors： Sukanya N,Vijaya M,Savithri HS,Radhakrishnan AN,Rao NA

更新日期：1991-02-01 00:00:00

abstract：:Storage compound accumulation during seed development prepares the next generation of plants for survival. Therefore, processes involved in the regulation and synthesis of storage compound accumulation during seed development bear relevance to germination and seedling establishment. The wrinkled1 (wri1) mutant of Arab...

journal_title：Plant physiology

authors： Cernac A,Andre C,Hoffmann-Benning S,Benning C

更新日期：2006-06-01 00:00:00

abstract：:Rice grains (Oryza sativa L.) from three varieties and three pairs of lines with different protein content were collected at 4-day intervals from 4 to 32 days after flowering. The samples were analyzed for protein, free amino nitrogen, ribonucleic acid, protease activity, and ribonuclease activity. In addition, the ca...

journal_title：Plant physiology

authors： Cruz LJ,Cagampang GB,Juliano BO

更新日期：1970-11-01 00:00:00

abstract：:Epidemics of obesity and type 2 diabetes drive strong consumer interest in plant-based low-calorie sweeteners. Trilobatin is a sweetener found at high concentrations in the leaves of a range of crabapple (Malus) species, but not in domesticated apple (Malus × domestica) leaves, which contain trilobatin's bitter positi...

journal_title：Plant physiology

authors： Wang Y,Yauk YK,Zhao Q,Hamiaux C,Xiao Z,Gunaseelan K,Zhang L,Tomes S,López-Girona E,Cooney J,Li H,Chagné D,Ma F,Li P,Atkinson RG

更新日期：2020-10-01 00:00:00

abstract：:The activity of the maize (Zea mays) florigen gene ZEA CENTRORADIALIS8 (ZCN8) is associated with the floral transition in both day-neutral temperate maize and short-day (SD)-requiring tropical maize. We analyzed transcription and chromatin modifications at the ZCN8 locus and its nearly identical paralog ZCN7 during th...

journal_title：Plant physiology

authors： Mascheretti I,Turner K,Brivio RS,Hand A,Colasanti J,Rossi V

更新日期：2015-08-01 00:00:00

abstract：:Acetate was incorporated by Chlorella pyrenoidosa into nonvolatile water-soluble compounds (amino acids, organic acids and carbohydrates) with pH optimum between 4 and 5. Incorporation into lipid was maximal at pH 7.5. The proportion of incorporated acetate in lipid was not significantly affected by acetate concentrat...

journal_title：Plant physiology

authors： Yung KH,Mudd JB

更新日期：1966-03-01 00:00:00

abstract：:Endogenous abscisic acid (ABA) levels are regulated by both biosynthesis and catabolism of the hormone. ABA 8'-hydroxylase is considered to be the key catabolic enzyme in many physiological processes. We have previously identified that four members of the Arabidopsis (Arabidopsis thaliana) CYP707A gene family (CYP707A...

journal_title：Plant physiology

authors： Okamoto M,Kuwahara A,Seo M,Kushiro T,Asami T,Hirai N,Kamiya Y,Koshiba T,Nambara E

更新日期：2006-05-01 00:00:00

abstract：:The cyanobacterial CO2-concentrating mechanism (CCM) allows photosynthesis to proceed in CO2-limited aquatic environments, and its activity is modulated in response to inorganic carbon (Ci) availability. Real-time reverse transcriptase-PCR analysis was used to examine the transcriptional regulation of more than 30 CCM...

journal_title：Plant physiology

authors： Woodger FJ,Badger MR,Price GD

更新日期：2003-12-01 00:00:00

abstract：:Rhythmic rotational movements with the midvein as the axis have been observed in the unifoliate leaves of Phaseolus angularis Wight grown under controlled environmental conditions with continuous light. The mean period of this movement for all leaves was 53.2 +/- 4.3 minutes and remained constant as the leaf matured, ...

journal_title：Plant physiology

authors： Alford DK,Tibbitts TW

更新日期：1971-01-01 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：:Rabbit antiserum against beta-amylase isolated from germinating seeds of rice was produced, and its specific cross-reactivity with beta-amylase was confirmed by means of Ouchterlony double immunodiffusion and immunoelectrophoresis procedures. The cellular localization of beta-amylase was studied by indirect fluorescen...

journal_title：Plant physiology

authors： Okamoto K,Akazawa T

更新日期：1979-08-01 00:00:00

abstract：:Relationships between net plant CO(2) exchange rate (CER) and canopy development were examined in ;jubilee' tomato over the initial 4 weeks of vegetative growth. A comparison was made between two plant groups that were alternatively exposed to 200 or 800 microeinsteins per square meter per second midday irradiation to...

journal_title：Plant physiology

authors： Campbell DE,Lyman M,Corse J,Hautala E

更新日期：1986-03-01 00:00:00

abstract：:The photosynthetic potential of leaves and chloroembryos of Cyamopsis tetragonoloba (L.) Taub as measured by (14)C-bicarbonate fixation, Hill activity, and in vivo fluorescence transients is compared. On a chlorophyll basis, dark fixation of NaH(14)CO(3) in chloroembryos was 1.5 times higher than that of the leaf, whe...

journal_title：Plant physiology

authors： Kaladharan P,Vivekanandan M

更新日期：1990-02-01 00:00:00

abstract：:Two dual label methods were used to investigate kinetic variability of ribulose 1,5-bisphosphate (RuBP) carboxylase/oxygenase (EC 4.1.1.39). In addition to using [1-(14)C,5-(3)H]RuBP (method 1), we describe here the detailed assay with (14)CO(2) and [5-(3)H]RuBP (method 2), which generates [(3)H,(14)C]3-phosphoglyceri...

journal_title：Plant physiology

authors： Kent SS,Tomany MJ

更新日期：1984-07-01 00:00:00

abstract：:Mechanical wounding not only damages plant tissues, but also provides pathways for pathogen invasion. To understand plant responses to wounding at a genomic level, we have surveyed the transcriptional response of 8,200 genes in Arabidopsis plants. Approximately 8% of these genes were altered by wounding at steady-stat...

journal_title：Plant physiology

authors： Cheong YH,Chang HS,Gupta R,Wang X,Zhu T,Luan S

更新日期：2002-06-01 00:00:00

abstract：:New cells are produced from the meristematic tissues located at the shoot and root tip throughout the life of higher plants. To investigate the genetic mechanism regulating meristematic activity, we isolated and characterized four single-gene, recessive mutants in Arabidopsis thaliana called root meristemless (rml). C...

journal_title：Plant physiology

authors： Cheng JC,Seeley KA,Sung ZR

更新日期：1995-02-01 00:00:00

abstract：:Transgenic tomato (Solanum lycopersicum) plants in which either mitochondrial malate dehydrogenase or fumarase was antisense inhibited have previously been characterized to exhibit altered photosynthetic metabolism. Here, we demonstrate that these manipulations also resulted in differences in root growth, with both tr...

journal_title：Plant physiology

authors： van der Merwe MJ,Osorio S,Moritz T,Nunes-Nesi A,Fernie AR

更新日期：2009-02-01 00:00:00

abstract：:The traditional method for determining compartmental analysis parameters relies on a visual selection of data points to be used for regression of data from each cellular compartment. This method is appropriate when the compartments are kinetically discrete and are easily discernible. However, where treatment effects o...

journal_title：Plant physiology

authors： Rygiewicz PT,Bledsoe CS,Glass AD

更新日期：1984-12-01 00:00:00

abstract：:When (32)P(1) was supplied as a 15-minute pulse to normal Spirodela oligorrhiza plants, the first phospholipid to become fully labeled was phosphatidic acid. Phosphatidyl glycerol reached maximum labeling before the other major phospholipids. In phosphorus-deficient plants, however, phosphatidyl glycerol became labele...

journal_title：Plant physiology

authors： Bieleski RL

更新日期：1972-05-01 00:00:00

abstract：:1-Deoxy-D-xylulose 5-phosphate reductoisomerase (DXR) catalyzes the first committed step of the 2-C-methyl-D-erythritol 4-phosphate pathway for isoprenoid biosynthesis. In Arabidopsis, DXR is encoded by a single-copy gene. We have cloned a full-length cDNA corresponding to this gene. A comparative analysis of all plan...

journal_title：Plant physiology

authors： Carretero-Paulet L,Ahumada I,Cunillera N,Rodríguez-Concepción M,Ferrer A,Boronat A,Campos N

更新日期：2002-08-01 00:00:00

abstract：:Superoxide dismutases (SODs) are ubiquitous metalloenzymes that catalyze the dismutation of superoxide radicals. Chloroplasts have two isozymes, copper/zinc SOD (Cu/ZnSOD) and iron SOD (FeSOD), encoded by nuclear genes. Because bryophytes are considered as the earliest land plants, they are one of the most interesting...

journal_title：Plant physiology

authors： Nagae M,Nakata M,Takahashi Y

更新日期：2008-04-01 00:00:00

abstract：:The distribution of activity of a potassium-stimulated ATPase associated with the plasma membrane was determined in 4-day-old soybean roots. Changes in protein-based specific activity of the enzyme coincided with developmental changes in the root. Activity was low in the region of the root cap, increased to a maximum ...

journal_title：Plant physiology

authors： Travis RL,Geng S,Berkowitz RL

更新日期：1979-06-01 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：:The partitioning of noncyclic photosynthetic electron transport between net fixation of CO(2) and collective O(2)-dependent, dissipative processes such as photorespiration has been examined in intact leaf tissue from Nicotiana tabacum. The method involves simultaneous application of CO(2) exchange and pulse modulated ...

journal_title：Plant physiology

authors： Peterson RB

更新日期：1989-08-01 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：:THE PRESENT STUDY COMPARES THE BINDING AND INHIBITORY ACTIVITY OF TWO PHOTOSYSTEM II INHIBITORS: 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron [DCMU]) and 2-chloro-4-(ethylamine)-6-(isopropyl amine)-S-triazene (atrazine). Chloroplasts isolated from naturally occurring triazine-susceptible and triazine-resistant biot...

journal_title：Plant physiology

authors： Pfister K,Radosevich SR,Arntzen CJ

更新日期：1979-12-01 00:00:00