79,630 results match your criteria arabidopsis thaliana

Overexpression of rice OsWNK9 promotes arsenite tolerance in transgenic Arabidopsis plants.

J Biotechnol 2021 Apr 14. Epub 2021 Apr 14.

Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, 400084, India. Electronic address:

Protein kinases are involved in the transfer of phosphate group to serine, threonine, and tyrosine residues of a target protein. 'With No Lysine kinase' (WNK) is a member of the serine/threonine protein kinase family, which has conserved catalytic lysine (K) residue in subdomain I instead of being in subdomain II.The WNKs family members in plants are stress inducible and have been validated for their role in abiotic stress tolerance. Read More

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Callose accumulation in specific phloem cell types reduces axillary bud growth in Arabidopsis thaliana.

New Phytol 2021 Apr 17. Epub 2021 Apr 17.

Sainsbury Laboratory, University of Cambridge, Cambridge, CB2 1LR, United Kingdom.

Shoot branching involves the coordinated regulation of the activity of meristems established in the axils of leaves along the stem (Mcsteen and Leyser, 2005). Once established, such axillary meristems often arrest as a dormant bud after the production of a few leaves. The hormone auxin, produced in the shoot apex, plays a central role in this process by moving downward in the stem and maintaining these axillary meristems in an inactive state, a process termed apical dominance (Morris, 1977, Snow, 1925, 1929). Read More

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A transcriptional regulatory module controls lipid accumulation in soybean.

New Phytol 2021 Apr 17. Epub 2021 Apr 17.

State Key Lab of Plant Genomics, Institute of Genetics and Developmental Biology, INASEED, Chinese Academy of Sciences, Beijing, 100101, China.

Soybean (Glycine max) is one of the most important oilseed crops. However, limited information is known about the regulatory mechanism of oil accumulation in soybean. In this study, a member of tandem CCCH zinc finger (TZF) proteins, GmZF392, from our previous RNA-seq analysis for seed-preferred transcription factors, was found to function as a positive regulator of lipid production. Read More

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Apoplastic lipid barriers regulated by conserved homeobox transcription factors extend seed longevity in multiple plant species.

New Phytol 2021 Apr 17. Epub 2021 Apr 17.

Instituto de Biología Molecular y Celular de Plantas, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Camino de Vera, 46022, Valencia, Spain.

Cutin and suberin are lipid polyesters deposited in specific apoplastic compartments. Their fundamental roles in plant biology include controlling the movement of gases, water and solutes, and conferring pathogen resistance. Both cutin and suberin have been shown to be present in the Arabidopsis seed coat where they regulate seed dormancy and longevity. Read More

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Bacillus velezensis tolerance to the induced oxidative stress in root colonization contributed by the two-component regulatory system sensor ResE.

Plant Cell Environ 2021 Apr 17. Epub 2021 Apr 17.

Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, National Engineering Research Center for Organic-based Fertilizers, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing Agricultural University, Nanjing, P.R. China.

Efficient root colonization of plant growth-promoting rhizobacteria is critical for their plant-beneficial functions. However, the strategy to overcoming plant immunity during root colonization is not well understood. In particular, how Bacillus strains cope with plant-derived reactive oxygen species (ROS), which function as the first barrier of plant defense, is not clear. Read More

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NETWORKED2-Subfamily Proteins Regulate the Cortical Actin Cytoskeleton of Growing Pollen Tubes and Polarised Pollen Tube Growth.

New Phytol 2021 Apr 16. Epub 2021 Apr 16.

Department of Biosciences, Durham University, South Road, Durham, DH1 3LE, UK.

We have recently characterised NET2A as a pollen-specific actin-binding protein which binds F-actin at the plasma membrane of growing pollen tubes. However, the role of NET2 proteins in pollen development and fertilisation have yet to be elucidated. To further characterise the role of Arabidopsis NET2 proteins in pollen development and fertilisation, we analysed the subcellular localisation of NET2A over the course of pollen grain development, and investigated the role of the NET2 family using net2 loss-of-function mutants. Read More

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Ensemble Switching Unveils a Kinetic Rheostat Mechanism of the Eukaryotic Thiamine Pyrophosphate Riboswitch.

RNA 2021 Apr 16. Epub 2021 Apr 16.

Department of Physics and Astronomy, Clemson University

Thiamine pyrophosphate (TPP) riboswitches regulate thiamine metabolism by inhibiting the translation of enzymes essential to thiamine synthesis pathways upon binding to thiamine pyrophosphate in cells across all domains of life. Recent work on the Arabidopsis thaliana TPP riboswitch suggests a multi-step TPP binding process involving multiple riboswitch configurational ensembles and that Mg2+ dependence underlies the mechanism of TPP recognition and subsequent transition to the expression-inhibiting state of the aptamer domain followed by changes in the expression platform. However, details of the relationship between TPP riboswitch conformational changes and interactions with TPP and Mg2+ ¬¬in the aptamer domain constituting this mechanism are unknown. Read More

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Preparation and applications of Arabidopsis thaliana guard cell protoplasts.

New Phytol 2002 Mar 5;153(3):517-526. Epub 2002 Mar 5.

Biology Department, The Pennsylvania State University, 208 Mueller Laboratory, University Park, PA, USA, 16803.

•  Guard cells play an important role in the physiology and development of plants. The genetic resources available for Arabidopsis thaliana make it the most favorable plant species for the study of guard cell processes, but it is not easy to isolate highly purified preparations of large numbers of guard cells from this species. Here, we describe methods for isolation of both guard cell and mesophyll cell protoplasts from A. Read More

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Stomatal development and CO : ecological consequences.

New Phytol 2002 Mar 5;153(3):477-484. Epub 2002 Mar 5.

Department of Animal and Plant Sciences, University of Sheffield, Sheffield, S10 2TN, UK.

•  Stomatal density responses by 48 accessions of Arabidopsis, to CO enrichment, broadly parallel interspecific observations. •  Accessions differing in the degree of stomatal response to both CO and drought differed in flower production. Under well watered conditions flowering benefits from a small reduction in stomatal density with CO enrichment, but benefits from a large reduction under drought. Read More

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A role for the cuticular waxes in the environmental control of stomatal development.

New Phytol 2002 Mar;153(3):433-439

Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.

The mechanism of guard cell development is currently attracting much interest. The recent use of Arabidopsis mutant plants has shed new light on the pathways that regulate the development and patterning of specialized cells such as guard cells, trichomes and roots hairs within the plant epidermis. Here, we review this literature focusing on the insights provided into guard cell development. Read More

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Loading acetoxymethyl ester fluorescent dyes into the cytoplasm of Arabidopsis and Commelina guard cells.

New Phytol 2002 Mar 5;153(3):527-533. Epub 2002 Mar 5.

University of California, San Diego, Division of Biology, Cell and Developmental Biology Section and Center for Molecular Genetics, La Jolla, CA 92093-0116, USA; 1Present address: Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba, 278-8510 Japan; 2Present address: Department of Plant Biology, University of Minnesota, St. Paul, MN 55108-1095, USA.

•  Cytosolic calcium and pH changes are integral components of guard cell signal transduction. Acetoxymethyl (AM) ester-linked Ca sensitive dyes are usually degraded before loading by extracellular esterases or partitioned into plant vacuoles using standard techniques, thereby preventing cytoplasmic Ca imaging. •  Here a method is described for improved loading of the calcium sensitive fluorescent dyes Calcium Green-1 and Fura-2 AM ester into the cytoplasm of Commelina and Arabidopsis guard cells in epidermal strips, allowing fluorescence from several guard cells in an epidermal strip to be imaged and measured simultaneously. Read More

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Variable timing of developmental progression in the stomatal pathway in Arabidopsis cotyledons.

New Phytol 2002 Mar 5;153(3):469-476. Epub 2002 Mar 5.

Department of Plant Biology, Ohio State University 1735 Neil Ave., Department of Plant Biology, Ohio State University, Columbus, Ohio 43210, USA.

•  Stomatal production depends on the rates of precursor cell formation (e.g. the formation of meristemoids by asymmetric division), and of developmental progression (e. Read More

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Tissue patterning of Arabidopsis cotyledons.

New Phytol 2002 Mar 5;153(3):461-467. Epub 2002 Mar 5.

Department of Botany, University of Wisconsin, Madison, WI 53706, USA.

•  Trichome and stomatal patterning are not independent events because trichomes form before stomata. We thought trichome genes might provide spatial referents to ensure proper distribution of stomata for gas exchange, and therefore studied mutants of GL1 and TRY using stomatal pattern of the entire cotyledon surface as the indicator. •  Mature cotyledons were imaged by SEM, stomatal maps were generated, and data were spatially analysed. Read More

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Specification of stomatal fate in Arabidopsis: evidences for cellular interactions.

New Phytol 2002 Mar 5;153(3):399-404. Epub 2002 Mar 5.

Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, E-45071 Toledo, Spain.

Stomata are bi-celled epidermal structures distributed in predictable patterns providing plants with pathways for gas exchange with the atmosphere. In Arabidopsis thaliana, stomatal formation is emerging as an elegant and powerful model system to study the genetic and molecular control of cell fate specification and pattern formation in multicellular organisms. In this review, we describe the mechanisms that regulate stomatal distribution in this model plant. Read More

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Secondary thickening in roots of Arabidopsis thaliana: anatomy and cell surface changes.

New Phytol 1995 Sep;131(1):121-128

Department of Cell Biology, John Innes Centre, Colney, Norwich NR4 7UH, UK.

The root of Arabidopsis thaliana (L.) Heynh. undergoes dramatic morphological changes during secondary thickening. Read More

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September 1995

Uptake and metabolism of sulphur dioxide by Arabidopsis thaliana.

New Phytol 1997 Jan;135(1):101-107

Institut für Pflanzenernährung und Bodenkunde, FAL, Bundesallee 50, D-38116, Braunschweig, Germany.

Arabidopsis thaliana (L.) Heynh. was exposed to various concentrations of SO during almost the entire life cycle. Read More

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January 1997

Phenotypic plasticity is the major determinant of changes in phenotypic integration in Arabidopsis.

New Phytol 2001 Dec;152(3):419-430

Departments of Botany and of Ecology & Evolutionary Biology, University of Tennessee, Knoxville, TN 37966-1100, USA.

•  The way in which novel genetic variation affects the patterns of phenotypic integration in natural populations is addressed here. •  An experimental study is presented of the variability in integration caused by interpopulation hybridization and consequent genetic reshuffling, as well as by changes in the physical environment in the model system Arabidopsis thaliana (Brassicaceae). •  Our results show a basic invariance of sets of covarying traits in A. Read More

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December 2001

Zinc tolerance and accumulation in metallicolous and nonmetallicolous populations of Arabidopsis halleri (Brassicaceae).

New Phytol 2000 May;146(2):225-233

1 Laboratoire de Génétique et Evolution des Populations Végétales, UPRESA 8016, FR 1818, Bât SN2, Université de Lille 1, 59655 Villeneuve d'Ascq cedex, France.

Zinc tolerance was investigated in five populations of Arabidopsis halleri (syn.: Cardaminopsis halleri) raised from seeds collected from contaminated and uncontaminated sites. Tolerance was measured by determining the concentration which inhibited root growth (EC ). Read More

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New Phytol 2014 Mar 6;201(4):1508. Epub 2014 Jan 6.

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Biological clocks in Arabidopsis thaliana.

Andrew J Millar

New Phytol 1999 Feb;141(2):175-197

1 Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK (tel +44 1203 524 592; fax +44 1203 523 701; e-mail

Biological rhythms are ubiquitous in eukaryotes, and the best understood of these occur with a period of approximately a day - circadian rhythms. Such rhythms persist even when the organism is placed under constant conditions, with a period that is close, but not exactly equal, to 24 h, and are driven by an endogenous timer - one of the many 'biological clocks'. In plants, research into circadian rhythms has been driven forward by genetic experiments using Arabidopsis. Read More

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February 1999

Gibberellins: regulating genes and germination.

New Phytol 1998 Nov;140(3):363-383

Biology Department, The Pennsylvania State University, 208 Mueller Laboratory, University Park, Pennsylvania 16802, USA.

The range of processes regulated by gibberellins (GAs) covers all aspects of the life history of the plant from seed germination to vegetative growth and flowering. In seeds there has been an intensive search, using the techniques of both biochemistry and cell biology, for the regulatory molecules linking GA perception to gene regulation and the events of germination. Although a GA receptor has yet to be identified, the site of perception has been localized to the plasma membrane. Read More

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November 1998

Involvement of salicylic acid in the response to potassium deficiency revealed by metabolomics.

Plant Physiol Biochem 2021 Apr 6;163:201-204. Epub 2021 Apr 6.

Research School of Biology, ANU College of Science, Australian National University, 2601, Canberra, ACT, Australia; Institut de Recherche en Horticulture et Semences, Université d'Angers, INRAe, 42 rue Georges Morel, 49070, Beaucouzé, France. Electronic address:

Potassium (K) deficiency has consequences not only on cellular ion balance and transmembrane potential but also on metabolism. In fact, several enzymes are K-dependent including enzymes in catabolism, causing an alteration in glycolysis and respiration. In addition, K deficiency is associated with the induction of specific pathways and accumulation of metabolic biomarkers, such as putrescine. Read More

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HY5 regulates light-responsive transcription of microRNA163 to promote primary root elongation in Arabidopsis seedlings.

J Integr Plant Biol 2021 Apr 16. Epub 2021 Apr 16.

College of Life Science, Henan Agricultural University, Zhengzhou, 450002, China.

MicroRNAs (miRNAs) play key roles in the post-transcriptional regulation of gene expression in plants. Many miRNAs are responsive to environmental signals. Light is the first environmental signal perceived by plants after emergence from the soil. Read More

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Strigolactone mimic 2-nitrodebranone is highly active in Arabidopsis growth and development.

Plant J 2021 Apr 15. Epub 2021 Apr 15.

Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518124, China.

Strigolactones play crucial roles in regulating plant architecture and development as endogenous hormones and orchestrating symbiotic interactions with fungi and parasitic plants as components of root exudates. rac-GR24 is currently the most widely used strigolactone analog and serves as a reference compound in investigating the action of strigolactones. In this study, we evaluated a suite of debranones and found that 2-nitrodebranone (2NOD) exhibited higher biological activity than rac-GR24 in various aspects of plant growth and development in Arabidopsis, including hypocotyl elongation inhibition, root hair promotion, and senescence acceleration. Read More

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Identification and functional characterization of a new flavonoid synthase gene MdFLS1 from apple.

Planta 2021 Apr 15;253(5):105. Epub 2021 Apr 15.

School of Pharmacy, Liaocheng University, Liaocheng, Shandong, 250000, People's Republic of China.

Main Conclusion: The flavonoid synthase gene MdFLS1 from apple, which possibly plays an important role in anthocyanin synthesis, accumulates in the purple-red branches of Malus 'Pink spire'. Flavonoid metabolism serves an important function in plant growth and development. In this study, we selected 20 varieties of apple lines, 10 green and ten red branches, from the plant nursery of Qingdao Agriculture Academy. Read More

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Influence of Ethylene Signaling in the Crosstalk Between Fe, S, and P Deficiency Responses in .

Front Plant Sci 2021 30;12:643585. Epub 2021 Mar 30.

Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain.

To cope with P, S, or Fe deficiency, dicot plants, like , develop several responses (mainly in their roots) aimed to facilitate the mobilization and uptake of the deficient nutrient. Within these responses are the modification of root morphology, an increased number of transporters, augmented synthesis-release of nutrient solubilizing compounds and the enhancement of some enzymatic activities, like ferric reductase activity (FRA) or phosphatase activity (PA). Once a nutrient has been acquired in enough quantity, these responses should be switched off to minimize energy costs and toxicity. Read More

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Arabidopsis CHLOROPHYLLASE 1 Protects Young Leaves from Long-term Photodamage by Facilitating FtsH-mediated D1 Degradation in Photosystem II Repair.

Mol Plant 2021 Apr 12. Epub 2021 Apr 12.

State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, People's Republic of China; College of Life Sciences, South China Agricultural University, Guangzhou, 510642, People's Republic of China. Electronic address:

The proteolytic degradation of the photodamaged D1 core subunit during photosystem (PS) II repair cycle is well understood, but chlorophyll turnover during D1 degradation remains unclear. Here, we report that Arabidopsis thaliana CHLOROPHYLLASE 1 (CLH1) plays important roles in the process. The abundance of CLH1 and CLH2 peaks in young leaves and is induced by high-light exposure. Read More

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Evolutionary "hide and seek" between bacterial flagellin and the plant immune system.

Cell Host Microbe 2021 Apr;29(4):548-550

Plant-Microbe Interactions, Department of Biology, Science for Life, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands.

Bacterial flagellin is a potent host immune activator. Parys et al. (2021) and Colaianni et al. Read More

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A family of pathogen-induced cysteine-rich transmembrane proteins is involved in plant disease resistance.

Planta 2021 Apr 15;253(5):102. Epub 2021 Apr 15.

Plant-Microbe Interactions, Department of Biology, Science4Life, Utrecht University, 800.56, 3508 TB, Utrecht, The Netherlands.

Main Conclusion: Overexpression of pathogen-induced cysteine-rich transmembrane proteins (PCMs) in Arabidopsis thaliana enhances resistance against biotrophic pathogens and stimulates hypocotyl growth, suggesting a potential role for PCMs in connecting both biological processes. Plants possess a sophisticated immune system to protect themselves against pathogen attack. The defense hormone salicylic acid (SA) is an important player in the plant immune gene regulatory network. Read More

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HEAT SHOCK PROTEIN 90 proteins and YODA regulate main body axis formation during early embryogenesis.

Plant Physiol 2021 Apr 15. Epub 2021 Apr 15.

Centre of the Region Haná for Biotechnological and Agricultural Research, Faculty of Science, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.

The YODA kinase (YDA) pathway is intimately associated with the control of Arabidopsis (Arabidopsis thaliana) embryo development, but little is known regarding its regulators. Using genetic analysis, HEAT SHOCK PROTEIN 90 (HSP90) proteins emerge as potent regulators of YDA in the process of embryo development and patterning. This study is focused on the characterization and quantification of early embryonal traits of single and double hsp90 and yda mutants. Read More

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