Is there a role for the apex in shoot geotropism?

abstract：:Side chains of sugar beet (Beta vulgaris) pectins, which are mainly composed of arabinose (Ara) and galactose (Gal) residues, are esterified by ferulic acid units. Enzymatic hydrolysis of beet cell walls yielded several feruloylated oligosaccharides, which were separated by hydrophobic interaction chromatography. Two ...

journal_title：Plant physiology

authors： Levigne SV,Ralet MC,Quéméner BC,Pollet BN,Lapierre C,Thibault JF

更新日期：2004-03-01 00:00:00

abstract：:The phytohormone abscisic acid (ABA) regulates physiologically important developmental processes and stress responses. Previously, we reported on Arabidopsis (Arabidopsis thaliana) L. Heynh. ahg mutants, which are hypersensitive to ABA during germination and early growth. Among them, ABA-hypersensitive germination3 (a...

journal_title：Plant physiology

authors： Yoshida T,Nishimura N,Kitahata N,Kuromori T,Ito T,Asami T,Shinozaki K,Hirayama T

更新日期：2006-01-01 00:00:00

abstract：:The kinetics of (14)CO(2) carboxylation and decarboxylation in corn root tips were determined to ascertain the sequence of product formation and subsequent utilization, and to obtain further evidence to predict the enzymes mediating the carboxylation and decarboxylations. The carboxylation data indicated that the firs...

journal_title：Plant physiology

authors： Ting IP,Dugger WM

更新日期：1967-05-01 00:00:00

abstract：:Intact spheroplasts of the cyanobacterium (blue-green alga) Anacystis nidulans oxidized various exogenous c-type cytochromes with concomitant outward proton translocation while exogenous ferricytochrome c was not reduced. The H(+)/e(-) stoichiometry was close to 1 with each of the cytochromes and did not depend on the...

journal_title：Plant physiology

authors： Peschek GA

更新日期：1984-08-01 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：:In wheat (Triticum aestivum) seedlings subjected to a mild water stress (water potential of -0.3 MPa), the leaf-elongation rate was reduced by one-half and the mitotic activity of mesophyll cells was reduced to 42% of well-watered controls within 1 d. There was also a reduction in the length of the zone of mesophyll c...

journal_title：Plant physiology

authors： Schuppler U,He PH,John PC,Munns R

更新日期：1998-06-01 00:00:00

abstract：:Five major fatty acids, palmitic (16:0), stearic (18:0), oleic (18:1), linoleic (18:2), and linolenic (18:3), were identified in polar lipid extracts from pulvini of Samanea saman and Phaseolus coccineus. In P. coccineus their distribution varied quantitatively in the laminar pulvinus, petiolar pulvinus, petiole, stem...

journal_title：Plant physiology

authors： Gardner GF,Stowe BB

更新日期：1979-09-01 00:00:00

abstract：:Small RAC/ROP-family G proteins regulate development and stress responses in plants. Transient overexpression and RNA interference experiments suggested that the barley (Hordeum vulgare) RAC/ROP protein RACB is involved in susceptibility to the powdery mildew fungus Blumeria graminis f. sp. hordei. We created transgen...

journal_title：Plant physiology

authors： Schultheiss H,Hensel G,Imani J,Broeders S,Sonnewald U,Kogel KH,Kumlehn J,Hückelhoven R

更新日期：2005-09-01 00:00:00

abstract：:Rhizobium promoters involved in the formation of root nodules on leguminous plants are activated by flavonoids in plant root exudate. A series of Rhizobium strains which all contain the inducible Rhizobium leguminosarum nodA promoter fused to the Escherichia coli lacZ gene, and which differ only in the source of the r...

journal_title：Plant physiology

authors： Zaat SA,Wijffelman CA,Mulders IH,van Brussel AA,Lugtenberg BJ

更新日期：1988-04-01 00:00:00

abstract：:Stomatal movement, which regulates gas exchange in plants, is controlled by a variety of environmental factors, including biotic and abiotic stresses. The stress hormone abscisic acid (ABA) initiates a signaling cascade, which leads to increased H2O2 and Ca2+ levels and F-actin reorganization, but the mechanism of, an...

journal_title：Plant physiology

authors： Biel A,Moser M,Meier I

更新日期：2020-02-01 00:00:00

abstract：:In ripening banana (Musa acuminata L. [AAA group, Cavandish subgroup] cv. Valery) fruit, the steady state concentration of the glycolytic regulator fructose 2,6-bisphosphate (Fru 2,6-P(2)) underwent a transient increase 2 to 3 hours before the respiratory rise, but coincident with the increase in ethylene synthesis. F...

journal_title：Plant physiology

authors： Beaudry RM,Paz N,Black CC,Kays SJ

更新日期：1987-09-01 00:00:00

abstract：:Serial analysis of gene expression was used to profile transcript levels in Arabidopsis roots and assess their responses to 2,4,6-trinitrotoluene (TNT) exposure. SAGE libraries representing control and TNT-exposed seedling root transcripts were constructed, and each was sequenced to a depth of roughly 32,000 tags. Mor...

journal_title：Plant physiology

authors： Ekman DR,Lorenz WW,Przybyla AE,Wolfe NL,Dean JF

更新日期：2003-11-01 00:00:00

abstract：:The correct separation of homologous chromosomes during meiosis I, and sister chromatids during meiosis II, relies on the tight control of the cohesion complex. The phosphorylation and subsequent cleavage of the meiotic recombination protein REC8 (REC8-like family protein [SYN1] in Arabidopsis [Arabidopsis thaliana]),...

journal_title：Plant physiology

authors： Yuan G,Ahootapeh BH,Komaki S,Schnittger A,Lillo C,De Storme N,Geelen D

更新日期：2018-09-01 00:00:00

abstract：:Plastids contain multiple copies of the plastid chromosome, folded together with proteins and RNA into nucleoids. The degree to which components of the plastid gene expression and protein biogenesis machineries are nucleoid associated, and the factors involved in plastid DNA organization, repair, and replication, are ...

journal_title：Plant physiology

authors： Majeran W,Friso G,Asakura Y,Qu X,Huang M,Ponnala L,Watkins KP,Barkan A,van Wijk KJ

更新日期：2012-01-01 00:00:00

abstract：:The seeds of lettuce (Lactuca sativa L. cv. Grand Rapids) germinate in darkness at 25 C when treated by gibberellic acid (GA(3)) for 1 hour following 2 hours of imbibition. The time of GA(3) application influences the rate and the final percentage of seeds that germinate. In contrast, red light illumination given at d...

journal_title：Plant physiology

authors： Lewak S,Khan AA

更新日期：1977-10-01 00:00:00

abstract：:The effects of the calculated photostationary state of phytochrome (phi(c)) and the photon fluence rate on the elongation growth of the hypocotyl of light-grown seedlings of Cucumis sativus L. are examined. Two threshold responses to phi(c) are found at values of 0.06 and 0.43. At phi(c) = 0.06, there is no response a...

journal_title：Plant physiology

authors： Gaba V,Black M

更新日期：1985-12-01 00:00:00

abstract：:Vacuolar sorting receptors, BP80/VSRs, play a critical role in vacuolar trafficking of soluble proteins in plant cells. However, the mechanism of action of BP80 is not well understood. Here, we investigate the action mechanism of AtVSR1, a member of BP80 proteins in Arabidopsis (Arabidopsis thaliana), in vacuolar traf...

journal_title：Plant physiology

authors： Kim H,Kang H,Jang M,Chang JH,Miao Y,Jiang L,Hwang I

更新日期：2010-09-01 00:00:00

abstract：:During maturation and ripening of tomato (Lycopersicon esculentum, cv Tamar) fruits, there are differential changes in the steady state levels of chloroplast proteins. Western blot analysis indicated that with the exception of the core polypeptide of photosystem I (PSI) (subunit I) the whole complex disappears during ...

journal_title：Plant physiology

authors： Livne A,Gepstein S

更新日期：1988-05-01 00:00:00

abstract：:It has long been known that leaf senescence can be induced in many plant species by detaching leaves and placing them in the darkness. It recently has been shown that entire Arabidopsis plants placed in the darkness are not induced to senesce, as judged by visible yellowing and certain molecular markers. Here, we show...

journal_title：Plant physiology

authors： Weaver LM,Amasino RM

更新日期：2001-11-01 00:00:00

abstract：:The Medicago truncatula line 2HA has a 500-fold greater capacity to regenerate plants in culture by somatic embryogenesis than wild-type Jemalong. We have compared proteomes of tissue cultures from leaf explants of these two lines. Both 2HA and Jemalong explants were grown on media containing the auxin 1-naphthaleneac...

journal_title：Plant physiology

authors： Imin N,Nizamidin M,Daniher D,Nolan KE,Rose RJ,Rolfe BG

更新日期：2005-04-01 00:00:00

abstract：:Maceration at liquid nitrogen temperatures, use of poly-vinylpyrrolidone, and careful pH control are essential to the isolation of ribosomes and polysomes from deciduous fruit tissue. Characteristics of the ribosomes and constituent RNA are described. The distribution of ribosomes among monomer and polymer forms remai...

journal_title：Plant physiology

authors： Ku LL,Romani RJ

更新日期：1970-04-01 00:00:00

abstract：:Aldolase activity of Chara foetida (Braun) could be separated into a minor (peak I) and a major peak (peak II) by ion-exchange chromatography on DEAE-cellulose. Affinity chromatography on P-cellulose resulted in highly purified aldolase preparations with specific activities of 3.2 and 4.8 units per milligram protein a...

journal_title：Plant physiology

authors： Jacobshagen S,Schnarrenberger C

更新日期：1988-05-01 00:00:00

abstract：:As water often limits crop production, a more complete understanding of plant water capture and transport is necessary. Here, we developed MECHA, a mathematical model that computes the flow of water across the root at the scale of walls, membranes, and plasmodesmata of individual cells, and used it to test hypotheses ...

journal_title：Plant physiology

authors： Couvreur V,Faget M,Lobet G,Javaux M,Chaumont F,Draye X

更新日期：2018-12-01 00:00:00

abstract：:Premature leaf senescence affects plant growth and yield in rice. NAD plays critical roles in cellular redox reactions and remains at a sufficient level in the cell to prevent cell death. Although numerous factors affecting leaf senescence have been identified, few involving NAD biosynthetic pathways have been describ...

journal_title：Plant physiology

authors： Wu L,Ren D,Hu S,Li G,Dong G,Jiang L,Hu X,Ye W,Cui Y,Zhu L,Hu J,Zhang G,Gao Z,Zeng D,Qian Q,Guo L

更新日期：2016-06-01 00:00:00

abstract：:Sugar beets (Beta vulgaris L.) infected with the Beet Yellows Virus exhibit lower rates of net photosynthesis at light saturation than do healthy plants. These Pn reductions were correlated with increases in leaf resistance to water vapor loss. Theoretical analyses demonstrated that, although the leaf resistance to wa...

journal_title：Plant physiology

authors： Hall AE,Loomis RS

更新日期：1972-11-01 00:00:00

abstract：:Shifts in the duration and intensity of ambient temperature impair plant development and reproduction, particularly male gametogenesis. Stress exposure causes meiotic defects or premature spore abortion in male reproductive organs, leading to male sterility. However, little is known about the mechanisms underlying str...

journal_title：Plant physiology

authors： Begcy K,Nosenko T,Zhou LZ,Fragner L,Weckwerth W,Dresselhaus T

更新日期：2019-10-01 00:00:00

abstract：:Eukaryotic initiation factor 4A (eIF4A) is a highly conserved RNA-stimulated ATPase and helicase involved in the initiation of messenger RNA translation. Previously, we found that eIF4A interacts with cyclin-dependent kinase A (CDKA), the plant ortholog of mammalian CDK1. Here, we show that this interaction occurs onl...

journal_title：Plant physiology

authors： Bush MS,Pierrat O,Nibau C,Mikitova V,Zheng T,Corke FM,Vlachonasios K,Mayberry LK,Browning KS,Doonan JH

更新日期：2016-09-01 00:00:00

abstract：:We screened a total of 1365 pea (Pisum sativum) lines for response to inoculation with Agrobacterium tumefaciens, strain B6, and characterized resistance in one cultivar, Sweet Snap. Sweet Snap seedlings were highly resistant to tumorigenesis under most conditions. Resistance was overcome at inoculum concentrations of...

journal_title：Plant physiology

authors： Robbs SL,Hawes MC,Lin HJ,Pueppke SG,Smith LY

更新日期：1991-01-01 00:00:00

abstract：:A novel flavonol-specific sulfotransferase was partially purified from the shoot tips of Flaveria bidentis var. Angustifolia O.K. (Asteraceae) by chromatography on 3'-phosphoadenosine 5'-phosphate-agarose affinity column and chromatofocusing on Mono P. The latter step resulted in the separation of two isoforms, both o...

journal_title：Plant physiology

authors： Varin L,Ibrahim RK

更新日期：1991-04-01 00:00:00

abstract：:Gln is a key player in plant metabolism. It is one of the major free amino acids that is transported into the developing seed and is central for nitrogen metabolism. However, Gln natural variation and its regulation and interaction with other metabolic processes in seeds remain poorly understood. To investigate the la...

journal_title：Plant physiology

authors： Slaten ML,Yobi A,Bagaza C,Chan YO,Shrestha V,Holden S,Katz E,Kanstrup C,Lipka AE,Kliebenstein DJ,Nour-Eldin HH,Angelovici R

更新日期：2020-06-01 00:00:00