Grain unloading of arsenic species in rice.

Abstract:

:Rice (Oryza sativa) is the staple food for over half the world's population yet may represent a significant dietary source of inorganic arsenic (As), a nonthreshold, class 1 human carcinogen. Rice grain As is dominated by the inorganic species, and the organic species dimethylarsinic acid (DMA). To investigate how As species are unloaded into grain rice, panicles were excised during grain filling and hydroponically pulsed with arsenite, arsenate, glutathione-complexed As, or DMA. Total As concentrations in flag leaf, grain, and husk, were quantified by inductively coupled plasma mass spectroscopy and As speciation in the fresh grain was determined by x-ray absorption near-edge spectroscopy. The roles of phloem and xylem transport were investigated by applying a +/- stem-girdling treatment to a second set of panicles, limiting phloem transport to the grain in panicles pulsed with arsenite or DMA. The results demonstrate that DMA is translocated to the rice grain with over an order magnitude greater efficiency than inorganic species and is more mobile than arsenite in both the phloem and the xylem. Phloem transport accounted for 90% of arsenite, and 55% of DMA, transport to the grain. Synchrotron x-ray fluorescence mapping and fluorescence microtomography revealed marked differences in the pattern of As unloading into the grain between DMA and arsenite-challenged grain. Arsenite was retained in the ovular vascular trace and DMA dispersed throughout the external grain parts and into the endosperm. This study also demonstrates that DMA speciation is altered in planta, potentially through complexation with thiols.

journal_name

Plant Physiol

journal_title

Plant physiology

authors

Carey AM,Scheckel KG,Lombi E,Newville M,Choi Y,Norton GJ,Charnock JM,Feldmann J,Price AH,Meharg AA

doi

10.1104/pp.109.146126

subject

Has Abstract

pub_date

2010-01-01 00:00:00

pages

309-19

issue

1

eissn

0032-0889

issn

1532-2548

pii

pp.109.146126

journal_volume

152

pub_type

杂志文章
  • CYP704B1 is a long-chain fatty acid omega-hydroxylase essential for sporopollenin synthesis in pollen of Arabidopsis.

    abstract::Sporopollenin is the major component of the outer pollen wall (exine). Fatty acid derivatives and phenolics are thought to be its monomeric building blocks, but the precise structure, biosynthetic route, and genetics of sporopollenin are poorly understood. Based on a phenotypic mutant screen in Arabidopsis (Arabidopsi...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.109.144469

    authors: Dobritsa AA,Shrestha J,Morant M,Pinot F,Matsuno M,Swanson R,Møller BL,Preuss D

    更新日期:2009-10-01 00:00:00

  • Identification of plant hormones from cotton ovules.

    abstract::An extract from 8-day-old cotton ovules (Gossypium hirsutum L.) was partitioned into three fractions and each fraction was derivatized and analyzed separately. Gas-liquid chromatography and computer-controlled gas-liquid chromatography-mass spectrometry were used to separate, measure, and identify the naturally occurr...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.55.3.550

    authors: Shindy WW,Smith OE

    更新日期:1975-03-01 00:00:00

  • A critical role of STAYGREEN/Mendel's I locus in controlling disease symptom development during Pseudomonas syringae pv tomato infection of Arabidopsis.

    abstract::Production of disease symptoms represents the final phase of infectious diseases and is a main cause of crop loss and/or marketability. However, little is known about the molecular basis of disease symptom development. In this study, a genetic screening was conducted to identify Arabidopsis (Arabidopsis thaliana) muta...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.111.181826

    authors: Mecey C,Hauck P,Trapp M,Pumplin N,Plovanich A,Yao J,He SY

    更新日期:2011-12-01 00:00:00

  • Maintenance of photosynthesis at low leaf water potential in wheat : role of potassium status and irrigation history.

    abstract::The interaction of low water potential effects on photosynthesis, and leaf K(+) levels in wheat (Triticum aestivum L.) plants was studied. Plants were grown at three K(+) fertilization levels; 0.2, 2, and 6 millimolar. With well watered plants, 2 millimolar K(+) supported maximal photosynthetic rates; 0.2 millimolar K...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.89.4.1358

    authors: Gupta AS,Berkowitz GA,Pier PA

    更新日期:1989-04-01 00:00:00

  • Light Quality and Irradiance Level Interaction in the Control of Expression of Light-Harvesting Complex of Photosystem II: Pigments, Pigment-Proteins, and mRNA Accumulation.

    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

    pub_type: 杂志文章

    doi:10.1104/pp.91.1.163

    authors: Eskins K,Westhoff P,Beremand PD

    更新日期:1989-09-01 00:00:00

  • Proteolytic Activity in Soybean Root Nodules : Activity in Host Cell Cytosol and Bacteroids throughout Physiological Development and Senescence.

    abstract::Root nodules were harvested from chamber-grown soybean (Glycine max L. Merrill cv Woodworth) plants throughout development. Apparent nitrogenase activity (acetylene reduction) peaked before seeds began to develop, but a significant amount of activity remained as the seeds matured. Nodule senescence was defined as the ...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.71.4.797

    authors: Pfeiffer NE,Torres CM,Wagner FW

    更新日期:1983-04-01 00:00:00

  • Rapid osmotic adjustment by a succulent halophyte to saline shock.

    abstract::The objective of this research was to measure the short term osmotic adjustment of Salicornia europaea L. ssp. rubra (A. Nels) Breitung when suddenly exposed to 100 millimolar NaCl. Plants were grown hydroponically, shocked with 100 millimolar NaCl added to the culture solution, and stem tips analyzed for free inorgan...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.78.1.100

    authors: McNulty IB

    更新日期:1985-05-01 00:00:00

  • Unraveling transcriptional control in Arabidopsis using cis-regulatory elements and coexpression networks.

    abstract::Analysis of gene expression data generated by high-throughput microarray transcript profiling experiments has demonstrated that genes with an overall similar expression pattern are often enriched for similar functions. This guilt-by-association principle can be applied to define modular gene programs, identify cis-reg...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.109.136028

    authors: Vandepoele K,Quimbaya M,Casneuf T,De Veylder L,Van de Peer Y

    更新日期:2009-06-01 00:00:00

  • Malate Metabolism in Leaf Mitochondria from the Crassulacean Acid Metabolism Plant Kalanchoë blossfeldiana Poelln.

    abstract::The mechanisms and the controlling factors of malate oxidation by mitochondria from leaves of Kalanchoë blossfeldiana Poelln. plants performing Crassulacean acid metabolism were investigated using Percollpurified mitochondria. The effects of pH and of various cofactors (ATP, NAD(+), coenzyme A) on malate dehydrogenase...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.81.4.1039

    authors: Rustin P,Lance C

    更新日期:1986-08-01 00:00:00

  • Partitioning of Noncyclic Photosynthetic Electron Transport to O(2)-Dependent Dissipative Processes as Probed by Fluorescence and CO(2) Exchange.

    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

    pub_type: 杂志文章

    doi:10.1104/pp.90.4.1322

    authors: Peterson RB

    更新日期:1989-08-01 00:00:00

  • Deciphering the Physalis floridana double-layered-lantern1 mutant provides insights into functional divergence of the GLOBOSA duplicates within the Solanaceae.

    abstract::Physalis spp. develop the "Chinese lantern" trait, also known as inflated calyx syndrome, that is a morphological novelty. Here, we identified the double-layered-lantern1 (doll1) mutant, a recessive and monofactorial mutation, in Physalis floridana; its corolla and androecium were transformed into the calyx and gynoec...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.113.233072

    authors: Zhang JS,Li Z,Zhao J,Zhang S,Quan H,Zhao M,He C

    更新日期:2014-02-01 00:00:00

  • De novo amino acid biosynthesis in potato tubers is regulated by sucrose levels.

    abstract::Plant growth and development are strongly dependent on sink-source interactions. In the majority of plants, sucrose (Suc) is the dominant form in which photo-assimilate is transported from source to sinks. Although the effects of Suc on photosynthetic metabolism have been intensively studied, the effect of Suc supply ...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.103.024802

    authors: Roessner-Tunali U,Urbanczyk-Wochniak E,Czechowski T,Kolbe A,Willmitzer L,Fernie AR

    更新日期:2003-10-01 00:00:00

  • Inhibition of photosynthetic electron transport by diphenyl ether herbicides.

    abstract::The effects of the diphenyl ether herbicides HOE 29152 (methyl-2[4-(4-trifluoromethoxy) phenoxy] propanoate) and nitrofluorfen (2-chloro-1-[4-nitrophenoxy]-4-[trifluoromethyl]benzene) on photosynthetic electron transport have been examined with pea seedling and spinach chloroplasts. Linear electron transport (water to...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.65.1.47

    authors: Bugg MW,Whitmarsh J,Rieck CE,Cohen WS

    更新日期:1980-01-01 00:00:00

  • BIN2, a new brassinosteroid-insensitive locus in Arabidopsis.

    abstract::Brassinosteroids (BRs) play important roles throughout plant development. Although many genes have been identified that are involved in BR biosynthesis, genetic approaches in Arabidopsis have led to the identification of only one gene, BRI1, that encodes a membrane receptor for BRs. To expand our knowledge of the mole...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.127.1.14

    authors: Li J,Nam KH,Vafeados D,Chory J

    更新日期:2001-09-01 00:00:00

  • Osmoregulation in Cotton in Response to Water Stress : II. LEAF CARBOHYDRATE STATUS IN RELATION TO OSMOTIC ADJUSTMENT.

    abstract::Diurnal changes in tissue water potential components, photosynthesis, and specific leaf carbohydrates were examined in water stress-adapted and nonadapted cotton plants. Adapted plants exhibited lower daily minimum leaf water potentials and maintained turgor to lower leaf water potentials than nonadapted plants. Becau...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.67.3.489

    authors: Ackerson RC

    更新日期:1981-03-01 00:00:00

  • Defects in a new class of sulfate/anion transporter link sulfur acclimation responses to intracellular glutathione levels and cell cycle control.

    abstract::We previously identified a mutation, suppressor of mating type locus3 15-1 (smt15-1), that partially suppresses the cell cycle defects caused by loss of the retinoblastoma tumor suppressor-related protein encoded by the MAT3 gene in Chlamydomonas reinhardtii. smt15-1 single mutants were also found to have a cell cycle...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.114.251009

    authors: Fang SC,Chung CL,Chen CH,Lopez-Paz C,Umen JG

    更新日期:2014-12-01 00:00:00

  • Function of Rhizodermal Transfer Cells in the Fe Stress Response Mechanism of Capsicum annuum L.

    abstract::A variety of red pepper (Capsicum annuum L., cv Yaglik) responds to Fe deficiency stress with simultaneously enhanced H(+) extrusion, reduction of ferric ions and synthesis of malic and citric acid in a swollen subapical root zone densely covered with root hairs. It is demonstrated that these stress responses temporal...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.82.2.511

    authors: Landsberg EC

    更新日期:1986-10-01 00:00:00

  • Gene trapping with firefly luciferase in Arabidopsis. Tagging of stress-responsive genes.

    abstract::To monitor the expression of T-DNA-tagged plant genes in vivo, a collection of 20,261 transgenic lines of Arabidopsis (Columbia-0) were generated with the promoter trap vector pTluc, which carries a promoterless firefly luc (luciferase) reporter gene linked to the right T-DNA border. By detection of bioluminescence in...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.103.027151

    authors: Alvarado MC,Zsigmond LM,Kovács I,Cséplö A,Koncz C,Szabados LM

    更新日期:2004-01-01 00:00:00

  • Molecular identification of an Arabidopsis S-adenosylmethionine transporter. Analysis of organ distribution, bacterial expression, reconstitution into liposomes, and functional characterization.

    abstract::Despite much study of the role of S-adenosylmethionine (SAM) in the methylation of DNA, RNA, and proteins, and as a cofactor for a wide range of biosynthetic processes, little is known concerning the intracellular transport of this essential metabolite. Screening of the Arabidopsis (Arabidopsis thaliana) genome yielde...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.106.086975

    authors: Palmieri L,Arrigoni R,Blanco E,Carrari F,Zanor MI,Studart-Guimaraes C,Fernie AR,Palmieri F

    更新日期:2006-11-01 00:00:00

  • GIGANTEA enables drought escape response via abscisic acid-dependent activation of the florigens and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS.

    abstract::Modulation of the transition to flowering plays an important role in the adaptation to drought. The drought-escape (DE) response allows plants to adaptively shorten their life cycle to make seeds before severe stress leads to death. However, the molecular basis of the DE response is unknown. A screen of different Arab...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.113.217729

    authors: Riboni M,Galbiati M,Tonelli C,Conti L

    更新日期:2013-07-01 00:00:00

  • Endogenous metabolism of fungus spores: stimulation by physical and chemical means.

    abstract::Endogenous respiration of spores of the fungus Myrothecium verrucaria can be stimulated up to over-10 fold by diverse chemicals or by physical treatments. Greatest effects were caused by azide (12-fold at 250 mum) and by 2,4-dinitrophenol (7-fold at 300 mum). Marked stimulation was also caused by 10 mum silver (5-fold...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.50.4.425

    authors: Mandels GR,Maguire A

    更新日期:1972-10-01 00:00:00

  • Resolvase OsGEN1 Mediates DNA Repair by Homologous Recombination.

    abstract::Yen1/GEN1 are canonical Holliday junction resolvases that belong to the RAD2/XPG family. In eukaryotes, such as budding yeast, mice, worms, and humans, Yen1/GEN1 work together with Mus81-Mms4/MUS81-EME1 and Slx1-Slx4/SLX1-SLX4 in DNA repair by homologous recombination to maintain genome stability. In plants, the biolo...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.16.01726

    authors: Wang C,Higgins JD,He Y,Lu P,Zhang D,Liang W

    更新日期:2017-02-01 00:00:00

  • Functional and expressional analyses of PmDAM genes associated with endodormancy in Japanese apricot.

    abstract::Bud endodormancy in woody plants plays an important role in their perennial growth cycles. We previously identified a MADS box gene, DORMANCY-ASSOCIATED MADS box6 (PmDAM6), expressed in the endodormant lateral buds of Japanese apricot (Prunus mume), as a candidate for the dormancy-controlling gene. In this study, we d...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.111.181982

    authors: Sasaki R,Yamane H,Ooka T,Jotatsu H,Kitamura Y,Akagi T,Tao R

    更新日期:2011-09-01 00:00:00

  • On the Role of Stored mRNA in Protein Synthesis in Embryonic Axes of Germinating Vigna unguiculata Seeds.

    abstract::Polyadenylated (poly A(+)) RNAs were prepared from both dry and incubated embryonic axes of Vigna unguiculata seeds and were translated by a wheat germ translation system. Analysis with gel electrophoresis and fluorography showed that translation products of poly A(+) RNA from dry embryonic axes were nearly the same a...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.79.2.327

    authors: Suzuki Y,Minamikawa T

    更新日期:1985-10-01 00:00:00

  • DeltapH-dependent photosystem II fluorescence quenching induced by saturating, multiturnover pulses in red algae

    abstract::We have previously shown that in the red alga Rhodella violacea, exposure to continuous low intensities of light 2 (green light) or near-saturating intensities of white light induces a DeltapH-dependent PSII fluorescence quenching. In this article we further characterize this fluorescence quenching by using white, sat...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.118.1.103

    authors: Delphin E,Duval JC,Etienne AL,Kirilovsky D

    更新日期:1998-09-01 00:00:00

  • Chorismate Mutase Isoenzymes from Selected Plants and Their Immunological Comparison with the Isoenzymes from Sorghum bicolor.

    abstract::The isoenzyme pattern of chorismate mutase (EC 5.4.99.5) was examined by diethylaminoethyl-cellulose chromatography in a wide variety of plants. All plants contained a regulated form of chorismate mutase (CM-1), and most contained an additional, unregulated form (CM-2). The regulatory properties of CM-1 differed signi...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.81.3.717

    authors: Singh BK,Lonergan SG,Conn EE

    更新日期:1986-07-01 00:00:00

  • Physiological Control of Chloride Transport in Chara corallina: I. EFFECTS OF LOW TEMPERATURE, CELL TURGOR PRESSURE, AND ANIONS.

    abstract::The rate of Cl(-) transport at the plasma membrane of the freshwater alga Chara corallina is investigated with respect to possible in vivo controls acting in addition to the two well established ones of cytoplasmic Cl(-) and cytoplasmic pH. In contrast with results from many other plant tissues, halides appear to be t...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.67.6.1113

    authors: Sanders D

    更新日期:1981-06-01 00:00:00

  • Specificity of RCN1-mediated protein phosphatase 2A regulation in meristem organization and stress response in roots.

    abstract::Protein dephosphorylation by the serine/threonine protein phosphatase 2A (PP2A) modulates a broad array of cellular functions. PP2A normally acts as a heterotrimeric holoenzyme complex comprising a catalytic subunit bound by regulatory A and B subunits. Characterization of the regulatory A subunit isoforms (ROOTS CURL...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.107.112995

    authors: Blakeslee JJ,Zhou HW,Heath JT,Skottke KR,Barrios JA,Liu SY,DeLong A

    更新日期:2008-02-01 00:00:00

  • Involvement of Abscisic Acid in Ethylene-Induced Cotyledon Abscission in Cotton Seedlings.

    abstract::Cotton (Gossypium hirsutum L. cv LG102) seedlings raised from seeds exposed to 100 [mu]M norflurazon (NFZ) during imbibition contained reduced levels of free abscisic acid (ABA) and were visibly achlorophyllous. Exposure of untreated cotton seedlings to ethylene concentrations >1 [mu]L/L for 24 h resulted in cotyledon...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.101.2.641

    authors: Suttle JC,Hultstrand JF

    更新日期:1993-02-01 00:00:00

  • Analysis of Porphyra membrane transporters demonstrates gene transfer among photosynthetic eukaryotes and numerous sodium-coupled transport systems.

    abstract::Membrane transporters play a central role in many cellular processes that rely on the movement of ions and organic molecules between the environment and the cell, and between cellular compartments. Transporters have been well characterized in plants and green algae, but little is known about transporters or their evol...

    journal_title:Plant physiology

    pub_type: 杂志文章

    doi:10.1104/pp.112.193896

    authors: Chan CX,Zäuner S,Wheeler G,Grossman AR,Prochnik SE,Blouin NA,Zhuang Y,Benning C,Berg GM,Yarish C,Eriksen RL,Klein AS,Lin S,Levine I,Brawley SH,Bhattacharya D

    更新日期:2012-04-01 00:00:00