A functional component of the transcriptionally active chromosome complex, Arabidopsis pTAC14, interacts with pTAC12/HEMERA and regulates plastid gene expression.


:The SET domain-containing protein, pTAC14, was previously identified as a component of the transcriptionally active chromosome (TAC) complexes. Here, we investigated the function of pTAC14 in the regulation of plastid-encoded bacterial-type RNA polymerase (PEP) activity and chloroplast development. The knockout of pTAC14 led to the blockage of thylakoid formation in Arabidopsis (Arabidopsis thaliana), and ptac14 was seedling lethal. Sequence and transcriptional analysis showed that pTAC14 encodes a specific protein in plants that is located in the chloroplast associated with the thylakoid and that its expression depends on light. In addition, the transcript levels of all investigated PEP-dependent genes were clearly reduced in the ptac14-1 mutants, while the accumulation of nucleus-encoded phage-type RNA polymerase-dependent transcripts was increased, indicating an important role of pTAC14 in maintaining PEP activity. pTAC14 was found to interact with pTAC12/HEMERA, another component of TACs that is involved in phytochrome signaling. The data suggest that pTAC14 is essential for proper chloroplast development, most likely by affecting PEP activity and regulating PEP-dependent plastid gene transcription in Arabidopsis together with pTAC12.


Plant Physiol


Plant physiology


Gao ZP,Yu QB,Zhao TT,Ma Q,Chen GX,Yang ZN




Has Abstract


2011-12-01 00:00:00














  • Pollen tube growth oscillations and intracellular calcium levels are reversibly modulated by actin polymerization.

    abstract::Prevention of actin polymerization with low concentrations of latrunculin B (Lat-B; 2 nm) exerts a profound inhibitory effect on pollen tube growth. Using flow-through chambers, we show that growth retardation starts after 10 min treatment with 2 nm Lat-B, and by 15 to 20 min reaches a basal rate of 0.1 to 0.2 microm/...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Cárdenas L,Lovy-Wheeler A,Kunkel JG,Hepler PK

    更新日期:2008-04-01 00:00:00

  • Nonrecirculating hydroponic system suitable for uptake studies at very low nutrient concentrations.

    abstract::We describe the mechanical, electronic, hydraulic, and structural design of a nonrecirculating hydroponic system. The system is particularly suited to studies at very low nutrient concentrations, for which on-line concentration monitoring methods either do not exist or are costly and limited to monitoring relatively f...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Gutschick VP,Kay LE

    更新日期:1991-04-01 00:00:00

  • Potassium and sodium absorption kinetics in roots of two tomato species : lycopersicon esculentum and lycopersicon cheesmanii.

    abstract::Excised roots of the tomato species, Lycopersicon esculentum Mill. cv Walter (the commercial species) and of Lycopersicon cheesmanii ssp. minor (Hook.) C.H. Mull. (a wild species from the Galapagos Islands), were used in comparative studies of their absorption of K(+) and Na(+). Uptake of (86)Rb-labeled K(+) and (22)N...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Wrona AF,Epstein E

    更新日期:1985-12-01 00:00:00

  • Iron-sulfur centers and activities of the photosynthetic electron transport chain in iron-deficient cultures of the blue-green alga aphanocapsa.

    abstract::Cultures of the blue-green alga, Aphanocapsa, were grown under iron-limiting conditions and changes in concentration of redox components of the photosynthetic electron transport chain, particularly iron-sulfur centers, were monitored by spectroscopic methods. A moderate iron depletion (1/10 of the normal concentration...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Sandmann G,Malkin R

    更新日期:1983-11-01 00:00:00

  • An improved green fluorescent protein gene as a vital marker in plants.

    abstract::A synthetic green fluorescent protein (GFP) gene (pgfp) was constructed to improve GFP expression in plants. Corn and tobacco protoplast transient assays showed that pgfp gave about 20-fold brighter fluorescence than the wild-type gene (gfp). Replacement of the serine at position 65 with a threonine (S65Tpgfp) or a cy...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Pang SZ,DeBoer DL,Wan Y,Ye G,Layton JG,Neher MK,Armstrong CL,Fry JE,Hinchee MA,Fromm ME

    更新日期:1996-11-01 00:00:00

  • Differential Localization of Fraction I Protein between Chloroplast Types.

    abstract::The soluble proteins of C(3) and C(4) mesophyll chloroplasts and C(4) bundle sheath extracts have been analyzed by gel electrophoresis for fraction I protein. Gel scans of soluble protein from C(4) bundle sheath extracts and C(3) mesophyll chloroplasts showed typical fraction I protein peaks that could be identified b...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Huber SC,Hall TC,Edwards GE

    更新日期:1976-05-01 00:00:00

  • Posttranslational Modifications of Chloroplast Proteins: An Emerging Field.

    abstract::Posttranslational modifications of proteins are key effectors of enzyme activity, protein interactions, targeting, and turnover rate, but despite their importance, they are still poorly understood in plants. Although numerous reports have revealed the regulatory role of protein phosphorylation in photosynthesis, vario...

    journal_title:Plant physiology

    pub_type: 杂志文章,评审


    authors: Lehtimäki N,Koskela MM,Mulo P

    更新日期:2015-07-01 00:00:00

  • Effects of Light on the Membrane Potential of Protoplasts from Samanea saman Pulvini : Involvement of K Channels and the H -ATPase.

    abstract::Rhythmic light-sensitive movements of the leaflets of Samanea saman depend upon ion fluxes across the plasma membrane of extensor and flexor cells in opposing regions of the leaf-movement organ (pulvinus). We have isolated protoplasts from the extensor and flexor regions of S. saman pulvini and have examined the effec...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Kim HY,Coté GG,Crain RC

    更新日期:1992-08-01 00:00:00

  • A Short Open Reading Frame Encompassing the MicroRNA173 Target Site Plays a Role in trans-Acting Small Interfering RNA Biogenesis.

    abstract::trans-Acting small interfering RNAs (tasiRNAs) participate in the regulation of organ morphogenesis and determination of developmental timing in plants by down-regulating target genes through mRNA cleavage. The production of tasiRNAs is triggered by microRNA173 (miR173) and other specific microRNA-mediated cleavage of...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Yoshikawa M,Iki T,Numa H,Miyashita K,Meshi T,Ishikawa M

    更新日期:2016-05-01 00:00:00

  • Evidence for circadian regulation of starch and sucrose synthesis in sugar beet leaves.

    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

    pub_type: 杂志文章


    authors: Li B,Geiger DR,Shieh WJ

    更新日期:1992-08-01 00:00:00

  • Starch degradation in the cotyledons of germinating lentils.

    abstract::Starch, total amylolytic and phosphorylase activities were determined in lentil cotyledons during the first days of germination. Several independent criteria show that the amylolytic activity is due mainly to an amylase of the alpha type. Starch is degraded slowly in the first days; during this time, alpha- and beta-a...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Tárrago JF,Nicolás G

    更新日期:1976-11-01 00:00:00

  • Short and long term effects of root and shoot chilling of ransom soybean.

    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

    pub_type: 杂志文章


    authors: Musser RL,Thomas SA,Kramer PJ

    更新日期:1983-11-01 00:00:00

  • RNA interference-mediated change in protein body morphology and seed opacity through loss of different zein proteins.

    abstract::Opaque or nonvitreous phenotypes relate to the seed architecture of maize (Zea mays) and are linked to loci that control the accumulation and proper deposition of storage proteins, called zeins, into specialized organelles in the endosperm, called protein bodies. However, in the absence of null mutants of each type of...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Wu Y,Messing J

    更新日期:2010-05-01 00:00:00

  • Directed mutation of the Rubisco large subunit of tobacco influences photorespiration and growth.

    abstract::The gene for the large subunit of Rubisco was specifically mutated by transforming the chloroplast genome of tobacco (Nicotiana tabacum). Codon 335 was altered to encode valine instead of leucine. The resulting mutant plants could not grow without atmospheric CO2 enrichment. In 0.3% (v/v) CO2, the mutant and wild-type...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Whitney SM,von Caemmerer S,Hudson GS,Andrews TJ

    更新日期:1999-10-01 00:00:00

  • Arabidopsis HMA2, a divalent heavy metal-transporting P(IB)-type ATPase, is involved in cytoplasmic Zn2+ homeostasis.

    abstract::PIB-type ATPases transport heavy metal ions (Cu+, Cu2+, Zn2+, Cd2+, Co2+, etc.) across biological membranes. Several members of this subfamily are present in plants. Higher plants are the only eukaryotes where putative Zn(2+)-ATPases have been identified. We have cloned HMA2, a PIB-ATPase present in Arabidopsis (Arabi...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Eren E,Argüello JM

    更新日期:2004-11-01 00:00:00

  • Cold-Specific Induction of a Dehydrin Gene Family Member in Barley.

    abstract::An interval on barley (Hordeum vulgare L.) chromosome 7 accounting for significant quantitative trait locus effects for winter hardiness were detected in a winter (Dicktoo) x spring (Morex) barley population (P.M. Hayes, T. Blake, T.H.H. Chen, S. Tragoonrung, F. Chen, A. Pan, and B. Liu [1993] Genome 36: 66-71). Two m...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Van Zee K,Chen FQ,Hayes PM,Close TJ,Chen T

    更新日期:1995-07-01 00:00:00

  • The sugar-dependent1 lipase limits triacylglycerol accumulation in vegetative tissues of Arabidopsis.

    abstract::There has been considerable interest recently in the prospect of engineering crops to produce triacylglycerol (TAG) in their vegetative tissues as a means to achieve a step change in oil yield. Here, we show that disruption of TAG hydrolysis in the Arabidopsis (Arabidopsis thaliana) lipase mutant sugar-dependent1 (sdp...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Kelly AA,van Erp H,Quettier AL,Shaw E,Menard G,Kurup S,Eastmond PJ

    更新日期:2013-07-01 00:00:00

  • Disruption of the actin cytoskeleton results in the promotion of gravitropism in inflorescence stems and hypocotyls of Arabidopsis.

    abstract::The actin cytoskeleton is hypothesized to play a major role in gravity perception and transduction mechanisms in roots of plants. To determine whether actin microfilaments (MFs) are involved in these processes in stem-like organs, we studied gravitropism in Arabidopsis inflorescence stems and hypocotyls. Localization ...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Yamamoto K,Kiss JZ

    更新日期:2002-02-01 00:00:00

  • Global selection on sucrose synthase haplotypes during a century of wheat breeding.

    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

    pub_type: 杂志文章


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

    更新日期:2014-04-01 00:00:00

  • Ligand Specificity of Bean Leaf Soluble Auxin-binding Protein.

    abstract::The soluble bean leaf auxin-binding protein (ABP) has a high affinity for a range of auxins including indole-3-acetic acid (IAA), alpha-napthaleneacetic acid, phenylacetic acid, 2,4,5-trichlorophenoxyacetic acid, and structurally related auxins. A large number of nonauxin compounds that are nevertheless structurally r...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Wardrop AJ,Polya GM

    更新日期:1980-07-01 00:00:00

  • Metabolism of gibberellin a(12)-7-aldehyde by soybean cotyledons and its use in identifying gibberellin a(7) as an endogenous gibberellin.

    abstract::The level of gibberellin(GA)-like material in cotyledons of soybean (Glycine max L.) was highest at mid-pod fill-about 10 nanograms GA(3) equivalents per gram fresh weight of tissue, assayed in the immersion dwarf rice bioassay. This amount is about 1000-fold less than levels in Pisum and Phaseolus seed, other legume ...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Birnberg PR,Brenner ML,Mardaus MC,Abe H,Pharis RP

    更新日期:1986-09-01 00:00:00

  • Metabolic bases for differences in sensitivity of two pea cultivars to sulfur dioxide.

    abstract::An oxidative chain reaction of sulfite initiated by the superoxide ion produced in the Mehler reaction has been implicated in the damage of plants exposed to sulfur dioxide. The toxicity of SO(2) may be alleviated by free radical scavenging systems acting to terminate this chain reaction. Hence, the relative sensitivi...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Madamanchi NR,Alscher RG

    更新日期:1991-09-01 00:00:00

  • Plastidial alpha-glucan phosphorylase is not required for starch degradation in Arabidopsis leaves but has a role in the tolerance of abiotic stress.

    abstract::To study the role of the plastidial alpha-glucan phosphorylase in starch metabolism in the leaves of Arabidopsis, two independent mutant lines containing T-DNA insertions within the phosphorylase gene were identified. Both insertions eliminate the activity of the plastidial alpha-glucan phosphorylase. Measurement of o...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Zeeman SC,Thorneycroft D,Schupp N,Chapple A,Weck M,Dunstan H,Haldimann P,Bechtold N,Smith AM,Smith SM

    更新日期:2004-06-01 00:00:00

  • Cadmium uptake kinetics in intact soybean plants.

    abstract::The absorption characteristics of Cd(2+) by 10- to 12-day-old soybean plants (Glycine max cv Williams) were investigated with respect to influence of Cd concentration on adsorption to root surfaces, root absorption, transport kinetics and interaction with the nutrient cations Cu(2+), Fe(2+), Mn(2+), and Zn(2+). The fr...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Cataldo DA,Garland TR,Wildung RE

    更新日期:1983-11-01 00:00:00

  • State 1-State 2 Transitions in a Unicellular Green Algae : Analysis of In Vivo Chlorophyll Fluorescence Induction Curves in the Presence of 3-(3,4-Dichlorophenyl)-1, 1-dimethylurea (DCMU).

    abstract::A study has been made on the State 1-State 2 transitions exhibited by the unicellular green algae Chlorella pyrenoidosa. Chlorophyll fluorescence induction curves from algae adapted to State 1 or State 2 have been analyzed and a comparison made with similar curves produced by decreasing the intensity of light going to...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Hodges M,Barber J

    更新日期:1983-08-01 00:00:00

  • Salinity stress inhibits bean leaf expansion by reducing turgor, not wall extensibility.

    abstract::Treatment of bean (Phaseolus vulgaris L.) seedlings with low levels of salinity (50 or 100 millimolar NaCl) decreased the rate of light-induced leaf cell expansion in the primary leaves over a 3 day period. This decrease could be due to a reduction in one or both of the primary cellular growth parameters: wall exten...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Neumann PM,Van Volkenburgh E,Cleland RE

    更新日期:1988-01-01 00:00:00

  • Ectopic Overexpression of Asparagine Synthetase in Transgenic Tobacco.

    abstract::Here, we monitor the effects of ectopic overexpression of genes for pea asparagine synthetase (AS1) in transgenic tobacco (Nicotiana tabacum). The AS genes of pea and tobacco are normally expressed only during the dark phase of the diurnal growth cycle and specifically in phloem cells. A hybrid gene was constructed in...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Brears T,Liu C,Knight TJ,Coruzzi GM

    更新日期:1993-12-01 00:00:00

  • Nitrogen-induced changes in the growth and metabolism of developing maize kernels grown in vitro.

    abstract::Cereal kernel growth and grain yield are functions of endosperm starch accumulation. The objective of this study was to examine how various metabolic factors in developing maize (Zea mays L.) endosperm influence starch deposition. Kernels were grown in vitro on medium with: (a) zero N (-N), (b) optimum N (+N), or (c) ...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Singletary GW,Below FE

    更新日期:1990-01-01 00:00:00

  • Effects of abscisic Acid treatment on the thermostability of the photosynthetic apparatus in barley chloroplasts.

    abstract::Thermostability of the photosynthetic apparatus of abscisic acid (ABA)-treated seedlings of barley (Hordeum vulgare) was studied by light-scattering and by fluorescence measurements of isolated chloroplasts. ABA treatment markedly decreased heat damage of the chloroplast ultrastructure; an exogenous ABA concentration ...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Ivanov AG,Kitcheva MI,Christov AM,Popova LP

    更新日期:1992-04-01 00:00:00

  • Optimization of Light-Harvesting Pigment Improves Photosynthetic Efficiency.

    abstract::Maximizing light capture by light-harvesting pigment optimization represents an attractive but challenging strategy to improve photosynthetic efficiency. Here, we report that loss of a previously uncharacterized gene, HIGH PHOTOSYNTHETIC EFFICIENCY1 (HPE1), optimizes light-harvesting pigments, leading to improved phot...

    journal_title:Plant physiology

    pub_type: 杂志文章


    authors: Jin H,Li M,Duan S,Fu M,Dong X,Liu B,Feng D,Wang J,Wang HB

    更新日期:2016-11-01 00:00:00