| 1886 | Populus (genetics) |
| 1243 | Populus (metabolism) |
| 883 | Populus (growth & development) |
| 866 | Gene Expression Regulation, Plant (MeSH) |
| 833 | Plant Proteins (genetics) |
| 764 | Populus (physiology) |
| 723 | Plant Proteins (metabolism) |
| 699 | Phylogeny (MeSH) |
| 670 | Animals (MeSH) |
| 665 | Molecular Sequence Data (MeSH) |
| 665 | Humans (MeSH) |
| 494 | Populus (chemistry) |
| 489 | Biomass (MeSH) |
| 484 | Plant Leaves (metabolism) |
| 464 | Amino Acid Sequence (MeSH) |
| 438 | Genes, Plant (MeSH) |
| 384 | Populus (drug effects) |
| 381 | Gene Expression Profiling (MeSH) |
| 376 | Populus (enzymology) |
| 372 | Arabidopsis (genetics) |
| 365 | Populus (microbiology) |
| 362 | Plants, Genetically Modified (MeSH) |
| 359 | Ecosystem (MeSH) |
| 334 | Male (MeSH) |
| 331 | Female (MeSH) |
| 322 | Sequence Analysis, DNA (MeSH) |
| 317 | Genome, Plant (MeSH) |
| 314 | Biodegradation, Environmental (MeSH) |
| 307 | Trees (MeSH) |
| 300 | Seasons (MeSH) |
| 296 | Populus (MeSH) |
| 293 | Time Factors (MeSH) |
| 285 | China (MeSH) |
| 279 | Base Sequence (MeSH) |
| 276 | Species Specificity (MeSH) |
| 265 | Plant Leaves (physiology) |
| 257 | Temperature (MeSH) |
| 257 | Plant Leaves (genetics) |
| 247 | Genotype (MeSH) |
| 228 | Plant Roots (metabolism) |
| 227 | Phenotype (MeSH) |
| 226 | Genetic Variation (MeSH) |
| 218 | Trees (growth & development) |
| 218 | Plant Leaves (chemistry) |
| 218 | Evolution, Molecular (MeSH) |
| 214 | Plants, Genetically Modified (genetics) |
| 210 | Sequence Alignment (MeSH) |
| 209 | Droughts (MeSH) |
| 207 | Trees (genetics) |
| 206 | Plant Leaves (growth & development) |
| 201 | Transcription Factors (genetics) |
| 201 | Lignin (metabolism) |
| 200 | Stress, Physiological (MeSH) |
| 196 | Cloning, Molecular (MeSH) |
| 195 | Plant Proteins (chemistry) |
| 192 | Adult (MeSH) |
| 191 | Multigene Family (MeSH) |
| 190 | Trees (physiology) |
| 176 | Models, Biological (MeSH) |
| 172 | Cell Wall (metabolism) |
| 171 | Plant Leaves (drug effects) |
| 167 | Nitrogen (metabolism) |
| 166 | Kinetics (MeSH) |
| 164 | Plant Roots (growth & development) |
| 164 | Hydrolysis (MeSH) |
| 163 | Soil (MeSH) |
| 161 | Lignin (chemistry) |
| 158 | Sequence Homology, Amino Acid (MeSH) |
| 158 | Photosynthesis (MeSH) |
| 153 | Transcription Factors (metabolism) |
| 152 | Soil (chemistry) |
| 150 | Trees (metabolism) |
| 146 | Wood (MeSH) |
| 146 | Populus (cytology) |
| 145 | Soil Microbiology (MeSH) |
| 143 | Genes, Plant (genetics) |
| 140 | Plants, Genetically Modified (metabolism) |
| 140 | Middle Aged (MeSH) |
| 138 | Hybridization, Genetic (MeSH) |
| 138 | Gene Expression Regulation, Plant (drug effects) |
| 137 | Carbon (metabolism) |
| 136 | DNA, Plant (genetics) |
| 133 | Wood (chemistry) |
| 133 | Water (metabolism) |
| 132 | RNA, Plant (genetics) |
| 132 | Environmental Monitoring (MeSH) |
| 132 | Adolescent (MeSH) |
| 131 | RNA, Messenger (genetics) |
| 131 | Populus (anatomy & histology) |
| 131 | Carbon Dioxide (metabolism) |
| 129 | Chromosome Mapping (MeSH) |
| 129 | Arabidopsis (metabolism) |
| 128 | Plant Diseases (microbiology) |
| 127 | Xylem (metabolism) |
| 125 | Arabidopsis Proteins (genetics) |
| 124 | Soil Pollutants (metabolism) |
| 122 | Plant Roots (genetics) |
| 121 | Photosynthesis (physiology) |
| 120 | Plant Stems (metabolism) |
| 117 | Reverse Transcriptase Polymerase Chain Reaction (MeSH) |
| 117 | Gene Expression (MeSH) |
| 116 | Wood (metabolism) |
| 116 | RNA, Messenger (metabolism) |
| 113 | Promoter Regions, Genetic (MeSH) |
| 112 | Soil Pollutants (analysis) |
| 111 | Oryza (genetics) |
| 111 | Forests (MeSH) |
| 110 | Hydrogen-Ion Concentration (MeSH) |
| 108 | Transcriptome (MeSH) |
| 108 | Plant Roots (microbiology) |
| 107 | Light (MeSH) |
| 106 | Chlorophyll (metabolism) |
| 105 | Oxidation-Reduction (MeSH) |
| 104 | Wood (genetics) |
| 104 | Cellulose (metabolism) |
| 103 | Aged (MeSH) |
| 102 | Genome, Plant (genetics) |
| 102 | Gene Expression Regulation, Plant (genetics) |
| 101 | Young Adult (MeSH) |
| 101 | Wood (growth & development) |
| 101 | Plant Leaves (MeSH) |
| 101 | Oligonucleotide Array Sequence Analysis (MeSH) |
| 101 | Cluster Analysis (MeSH) |
| 97 | Hot Temperature (MeSH) |
| 97 | DNA, Bacterial (genetics) |
| 97 | Adaptation, Physiological (MeSH) |
| 96 | Plant Roots (physiology) |
| 96 | Crosses, Genetic (MeSH) |
| 95 | Water (MeSH) |
| 94 | Models, Genetic (MeSH) |
| 93 | Signal Transduction (MeSH) |
| 93 | Plants (genetics) |
| 91 | MicroRNAs (genetics) |
| 91 | Gene Duplication (MeSH) |
| 90 | Reproducibility of Results (MeSH) |
| 89 | Soil (analysis) |
| 89 | RNA, Ribosomal, 16S (genetics) |
| 89 | Polymorphism, Single Nucleotide (MeSH) |
| 88 | Stress, Physiological (genetics) |
| 88 | Plant Stems (growth & development) |
| 88 | Plant Roots (drug effects) |
| 88 | Expressed Sequence Tags (MeSH) |
| 88 | Environmental Monitoring (methods) |
| 88 | Environment (MeSH) |
| 87 | Plant Stems (genetics) |
| 86 | Models, Molecular (MeSH) |
| 85 | Photosynthesis (drug effects) |
| 83 | Xylem (genetics) |
| 83 | Plant Shoots (growth & development) |
| 83 | Conserved Sequence (MeSH) |
| 82 | Plants (metabolism) |
| 82 | Plant Leaves (microbiology) |
| 82 | Cell Wall (chemistry) |
| 81 | Biodiversity (MeSH) |
| 79 | Populus (classification) |
| 79 | Mutation (MeSH) |
| 79 | Gene Expression Regulation, Developmental (MeSH) |
| 79 | DNA, Complementary (genetics) |
| 79 | Arabidopsis Proteins (metabolism) |
| 78 | Tobacco (genetics) |
| 78 | Lignin (biosynthesis) |
| 78 | Gene Expression Regulation, Plant (physiology) |
| 77 | Plant Stems (physiology) |
| 77 | Climate Change (MeSH) |
| 76 | Polymerase Chain Reaction (MeSH) |
| 75 | Plant Growth Regulators (metabolism) |
| 75 | Genomics (MeSH) |
| 75 | Conservation of Natural Resources (MeSH) |
| 74 | Computer Simulation (MeSH) |
| 73 | Populus (ultrastructure) |
| 73 | Population Dynamics (MeSH) |
| 73 | Plant Transpiration (physiology) |
| 73 | Geography (MeSH) |
| 73 | Genetics, Population (MeSH) |
| 73 | Chromosomes, Plant (genetics) |
| 72 | Transformation, Genetic (MeSH) |
| 72 | Transcription, Genetic (MeSH) |
| 72 | Databases, Genetic (MeSH) |
| 71 | Plant Leaves (anatomy & histology) |
| 71 | Indoleacetic Acids (metabolism) |
| 70 | Plants, Genetically Modified (growth & development) |
| 70 | Magnetic Resonance Spectroscopy (MeSH) |
| 70 | Herbivory (MeSH) |
| 70 | Climate (MeSH) |
| 70 | Biotechnology (methods) |
| 69 | Substrate Specificity (MeSH) |
| 69 | Recombinant Proteins (metabolism) |
| 69 | Plant Stomata (physiology) |
| 69 | Chromatography, High Pressure Liquid (MeSH) |
| 69 | Biological Transport (MeSH) |
| 68 | Water (physiology) |
| 68 | Trees (chemistry) |
| 68 | Sodium Chloride (pharmacology) |
| 68 | Photoperiod (MeSH) |
| 68 | Hemiterpenes (metabolism) |
| 68 | Arabidopsis (enzymology) |
| 66 | Butadienes (metabolism) |
| 65 | Treatment Outcome (MeSH) |
| 65 | Rivers (MeSH) |
| 65 | Computational Biology (MeSH) |
| 65 | Carbon Dioxide (pharmacology) |
| 65 | Carbohydrate Metabolism (MeSH) |
| 65 | Algorithms (MeSH) |
| 64 | Real-Time Polymerase Chain Reaction (MeSH) |
| 64 | Cellulose (chemistry) |
| 63 | Protein Structure, Tertiary (MeSH) |
| 63 | Flowers (genetics) |
| 62 | Populus (parasitology) |
| 62 | Gene Expression Regulation, Enzymologic (MeSH) |
| 62 | Cold Temperature (MeSH) |
| 62 | Binding Sites (MeSH) |
| 61 | Genetic Markers (MeSH) |
| 60 | Plant Transpiration (MeSH) |
| 60 | Fermentation (MeSH) |
| 60 | Cellulase (metabolism) |
| 59 | Symbiosis (MeSH) |
| 59 | Plant Diseases (genetics) |
| 59 | Microsatellite Repeats (MeSH) |
| 59 | Gene Regulatory Networks (MeSH) |
| 59 | Analysis of Variance (MeSH) |
| 58 | Promoter Regions, Genetic (genetics) |
| 58 | Nitrogen (analysis) |
| 58 | Models, Theoretical (MeSH) |
| 58 | Cadmium (metabolism) |
| 57 | Trees (enzymology) |
| 57 | Populus (radiation effects) |
| 57 | Molecular Structure (MeSH) |
| 57 | Magnoliopsida (genetics) |
| 57 | Gas Chromatography-Mass Spectrometry (MeSH) |
| 57 | Biological Evolution (MeSH) |
| 57 | Antioxidants (metabolism) |
| 56 | Xylem (physiology) |
| 56 | Protein Conformation (MeSH) |
| 56 | Plant Leaves (enzymology) |
| 56 | Plant Extracts (pharmacology) |
| 56 | Metals, Heavy (analysis) |
| 56 | Gene Library (MeSH) |
| 56 | Biofuels (MeSH) |
| 56 | Alleles (MeSH) |
| 55 | Plant Proteins (physiology) |
| 55 | Child (MeSH) |
| 54 | United States (MeSH) |
| 54 | RNA Interference (MeSH) |
| 54 | Mass Spectrometry (MeSH) |
| 53 | Pentanes (metabolism) |
| 52 | Stress, Physiological (drug effects) |
| 52 | Sequence Homology, Nucleic Acid (MeSH) |
| 52 | Protein Binding (MeSH) |
| 52 | Plant Shoots (metabolism) |
| 52 | Air Pollutants (analysis) |
| 52 | Adaptation, Physiological (genetics) |
| 51 | Xylem (growth & development) |
| 51 | Spectroscopy, Fourier Transform Infrared (MeSH) |
| 51 | Plant Extracts (chemistry) |
| 51 | Mycorrhizae (physiology) |
| 51 | Molecular Weight (MeSH) |
| 51 | Molecular Sequence Annotation (MeSH) |
| 51 | High-Throughput Nucleotide Sequencing (MeSH) |
| 51 | DNA, Fungal (genetics) |
| 51 | Cell Wall (genetics) |
| 51 | Agriculture (MeSH) |
| 51 | Adsorption (MeSH) |
| 50 | Recombinant Proteins (genetics) |
| 50 | Reactive Oxygen Species (metabolism) |
| 50 | Proteomics (MeSH) |
| 50 | Principal Component Analysis (MeSH) |
| 50 | Phenols (metabolism) |
| 50 | MicroRNAs (metabolism) |
| 50 | Lignin (analysis) |
| 50 | Dose-Response Relationship, Drug (MeSH) |
| 50 | Base Composition (MeSH) |
| 49 | Xylem (cytology) |
| 49 | Water (chemistry) |
| 49 | Quantitative Trait Loci (MeSH) |
| 49 | Plant Development (MeSH) |
| 49 | Ozone (pharmacology) |
| 49 | Fungal Proteins (genetics) |
| 48 | Quantitative Trait, Heritable (MeSH) |
| 48 | Propolis (chemistry) |
| 48 | Polysaccharides (metabolism) |
| 48 | Polymorphism, Single Nucleotide (genetics) |
| 48 | Carbon (analysis) |
| 47 | Software (MeSH) |
| 47 | RNA, Plant (metabolism) |
| 47 | Oxidoreductases (metabolism) |
| 47 | Microscopy, Electron, Scanning (MeSH) |
| 47 | Mice (MeSH) |
| 47 | Glucosyltransferases (genetics) |
| 47 | Bacterial Typing Techniques (MeSH) |
| 46 | Soil Pollutants (toxicity) |
| 46 | Seedlings (growth & development) |
| 46 | Plants, Genetically Modified (physiology) |
| 46 | Plant Shoots (genetics) |
| 46 | Plant Roots (chemistry) |
| 45 | Sequence Analysis, RNA (MeSH) |
| 45 | Risk Factors (MeSH) |
| 45 | Polymorphism, Genetic (MeSH) |
| 45 | Canada (MeSH) |
| 45 | Arabidopsis (physiology) |
| 45 | Arabidopsis (growth & development) |
| 44 | Water Pollutants, Chemical (analysis) |
| 44 | Plant Proteins (classification) |
| 44 | Genome-Wide Association Study (MeSH) |
| 44 | Fungal Proteins (metabolism) |
| 44 | Europe (MeSH) |
| 44 | Escherichia coli (genetics) |
| 44 | Abscisic Acid (metabolism) |
| 43 | Selection, Genetic (MeSH) |
| 43 | Salinity (MeSH) |
| 43 | Oxidative Stress (MeSH) |
| 43 | Moths (physiology) |
| 43 | Metals, Heavy (metabolism) |
| 43 | Down-Regulation (MeSH) |
| 43 | Computational Biology (methods) |
| 42 | Tobacco (metabolism) |
| 42 | Plants (chemistry) |
| 42 | Plant Growth Regulators (pharmacology) |
| 42 | Hydrogen Peroxide (metabolism) |
| 42 | Genomics (methods) |
| 42 | Genetic Linkage (MeSH) |
| 41 | Volatile Organic Compounds (metabolism) |
| 41 | Salix (growth & development) |
| 41 | Plant Roots (MeSH) |
| 41 | Plant Leaves (radiation effects) |
| 41 | Phenols (analysis) |
| 41 | Linkage Disequilibrium (MeSH) |
| 41 | Fluorescence (MeSH) |
| 40 | Volatilization (MeSH) |
| 40 | Trees (microbiology) |
| 40 | Populus (immunology) |
| 40 | Peroxidases (metabolism) |
| 40 | Cell Wall (ultrastructure) |
| 39 | Solubility (MeSH) |
| 39 | Regression Analysis (MeSH) |
| 39 | Glutathione (metabolism) |
| 39 | Forestry (MeSH) |
| 39 | Bacterial Proteins (genetics) |
| 38 | Zinc (metabolism) |
| 38 | Xylans (metabolism) |
| 38 | Seedlings (metabolism) |
| 38 | Salix (metabolism) |
| 38 | Proteomics (methods) |
| 38 | Ozone (toxicity) |
| 38 | Ecology (MeSH) |
| 38 | Blotting, Northern (MeSH) |
| 37 | Vitis (genetics) |
| 37 | Surveys and Questionnaires (MeSH) |
| 37 | Salt Tolerance (genetics) |
| 37 | Rhizosphere (MeSH) |
| 37 | Phenols (chemistry) |
| 37 | Mutation (genetics) |
| 37 | Gene Expression Profiling (methods) |
| 37 | Cells, Cultured (MeSH) |
| 37 | Carbon Isotopes (MeSH) |
| 37 | Basidiomycota (physiology) |
| 37 | Bacteria (classification) |
| 36 | Water Pollutants, Chemical (metabolism) |
| 36 | Transcriptome (genetics) |
| 36 | Stress, Mechanical (MeSH) |
| 36 | Pentanes (MeSH) |
| 36 | Organ Specificity (MeSH) |
| 36 | Fatty Acids (chemistry) |
| 36 | Desert Climate (MeSH) |
| 36 | Cadmium (toxicity) |
| 36 | Bacteria (genetics) |
| 36 | Alkyl and Aryl Transferases (metabolism) |
| 36 | Aged, 80 and over (MeSH) |
| 35 | Zea mays (genetics) |
| 35 | Wood (physiology) |
| 35 | Plants (MeSH) |
| 35 | Plant Proteins (analysis) |
| 35 | Oxidoreductases (genetics) |
| 35 | North America (MeSH) |
| 35 | Internet (MeSH) |
| 35 | Chromosomes, Plant (MeSH) |
| 35 | Chloroplasts (metabolism) |
| 35 | Chimera (MeSH) |
| 35 | Betula (metabolism) |
| 34 | Water Movements (MeSH) |
| 34 | Tissue Distribution (MeSH) |
| 34 | Tandem Mass Spectrometry (MeSH) |
| 34 | Superoxide Dismutase (metabolism) |
| 34 | Protein Transport (MeSH) |
| 34 | Plant Stems (chemistry) |
| 34 | Phloem (metabolism) |
| 34 | Microsatellite Repeats (genetics) |
| 34 | Isoenzymes (genetics) |
| 34 | Haplotypes (MeSH) |
| 34 | Glycosyltransferases (genetics) |
| 34 | Glucosyltransferases (metabolism) |
| 34 | Genetic Complementation Test (MeSH) |
| 34 | Flowers (growth & development) |
| 34 | Fertilizers (MeSH) |
| 34 | Dehydration (MeSH) |
| 34 | DNA, Ribosomal (genetics) |
| 34 | Crystallography, X-Ray (MeSH) |
| 34 | Catalysis (MeSH) |
| 34 | Abscisic Acid (pharmacology) |
| 33 | Transgenes (MeSH) |
| 33 | Saccharomyces cerevisiae (metabolism) |
| 33 | Quantitative Trait Loci (genetics) |
| 33 | Potassium (metabolism) |
| 33 | Plant Stems (anatomy & histology) |
| 33 | Plant Shoots (physiology) |
| 33 | Photosynthesis (genetics) |
| 33 | Models, Statistical (MeSH) |
| 33 | Italy (MeSH) |
| 33 | Glucuronidase (metabolism) |
| 33 | Genetic Association Studies (MeSH) |
| 33 | Carbohydrates (analysis) |
| 33 | Basidiomycota (genetics) |
| 33 | Amino Acid Motifs (MeSH) |
| 32 | Retrospective Studies (MeSH) |
| 32 | Polymorphism, Restriction Fragment Length (MeSH) |
| 32 | Plant Physiological Phenomena (MeSH) |
| 32 | Phosphorus (metabolism) |
| 32 | Mycorrhizae (genetics) |
| 32 | Gibberellins (metabolism) |
| 32 | Gene Ontology (MeSH) |
| 32 | Cadmium (analysis) |
| 32 | Betula (growth & development) |
| 32 | Ascomycota (genetics) |
| 32 | Aquaporins (genetics) |
| 31 | Trees (classification) |
| 31 | Synteny (MeSH) |
| 31 | Signal Transduction (genetics) |
| 31 | Plant Proteins (isolation & purification) |
| 31 | Plant Proteins (biosynthesis) |
| 31 | Multigene Family (genetics) |
| 31 | Glycosyltransferases (metabolism) |
| 31 | Glucose (metabolism) |
| 31 | Fungi (genetics) |
| 31 | Electrophoresis, Polyacrylamide Gel (MeSH) |
| 31 | DNA Primers (MeSH) |
| 31 | Butadienes (MeSH) |
| 31 | Arabidopsis (drug effects) |
| 31 | Acclimatization (MeSH) |
| 30 | Trees (anatomy & histology) |
| 30 | Sequence Analysis, Protein (MeSH) |
| 30 | Recombinant Proteins (chemistry) |
| 30 | Proteome (metabolism) |
| 30 | Polysaccharides (chemistry) |
| 30 | Plants, Genetically Modified (enzymology) |
| 30 | Nucleic Acid Hybridization (MeSH) |
| 30 | Mining (MeSH) |
| 30 | Microscopy, Electron, Transmission (MeSH) |
| 30 | Forestry (methods) |
| 30 | Feeding Behavior (MeSH) |
| 30 | Ethanol (metabolism) |
| 30 | Cyclopentanes (pharmacology) |
| 30 | Cross-Sectional Studies (MeSH) |
| 30 | Child, Preschool (MeSH) |
| 30 | Blotting, Western (MeSH) |
| 30 | Aquaporins (metabolism) |
| 29 | Water (analysis) |
| 29 | Trees (drug effects) |
| 29 | Prospective Studies (MeSH) |
| 29 | Pinus (MeSH) |
| 29 | Methyltransferases (metabolism) |
| 29 | Linear Models (MeSH) |
| 29 | Lignin (MeSH) |
| 29 | Gene Flow (MeSH) |
| 29 | Fungi (classification) |
| 29 | Escherichia coli (metabolism) |
| 29 | DNA, Complementary (chemistry) |
| 29 | Copper (metabolism) |
| 29 | Coleoptera (physiology) |
| 29 | Circadian Rhythm (MeSH) |
| 29 | Catalytic Domain (MeSH) |
| 29 | Bacterial Proteins (metabolism) |
| 29 | Bacteria (isolation & purification) |
| 29 | Australia (MeSH) |
| 29 | Amino Acids (metabolism) |
| 28 | Zinc (analysis) |
| 28 | Ultraviolet Rays (MeSH) |
| 28 | Sensitivity and Specificity (MeSH) |
| 28 | Salix (genetics) |
| 28 | Psychotic Disorders (psychology) |
| 28 | Psychiatric Status Rating Scales (MeSH) |
| 28 | Plants (enzymology) |
| 28 | Plant Stems (cytology) |
| 28 | Plant Proteins (MeSH) |
| 28 | Mutagenesis, Site-Directed (MeSH) |
| 28 | Microbial Sensitivity Tests (MeSH) |
| 28 | Metabolome (MeSH) |
| 28 | Lignin (genetics) |
| 28 | Larva (MeSH) |
| 28 | Isoenzymes (metabolism) |
| 28 | Glucuronidase (genetics) |
| 28 | DNA, Ribosomal Spacer (genetics) |
| 28 | Cell Wall (enzymology) |
| 28 | Blotting, Southern (MeSH) |
| 27 | Wood (cytology) |
| 27 | Sucrose (metabolism) |
| 27 | Soil Pollutants (pharmacokinetics) |
| 27 | Signal Transduction (drug effects) |
| 27 | Salicaceae (genetics) |
| 27 | Plastocyanin (chemistry) |
| 27 | Plant Roots (enzymology) |
| 27 | Plant Leaves (cytology) |
