IntroductionNaser A. Anjum, Iqbal Ahmad, Armando C. Duarte, Shahid Umar, Nafees A. Khan, and Maria E. PereiraContaminants, Contaminated Sites, and RemediationHeavy Metals in the Environment: Current Status, Toxic Effects on Plants and PhytoremediationMirza Hasanuzzaman and Masayuki FujitaPhytotechnology—Remediation of Inorganic ContaminantsFelix A. Aisien, Innocent O. Oboh, and Eki T. AisienPotential of Constructed Wetland Phytotechnology for Tannery Wastewater TreatmentCristina S. C. Calheiros, António O. S. S. Rangel, and Paula M. L. CastroPhytoremediation of Petroleum Hydrocarbon–Contaminated Soils in VenezuelaCarmen Infante, Ismael Hernández-Valencia, Liliana López, and Marcia ToroFate and Transport Issues Associated with Contaminants and Contaminant By-Products in PhytotechnologyChris O. NwokoGenus Brassica and Contaminants’ RemediationMetals and Metalloids Accumulation Variability in Brassica Species: A ReviewNaser A. Anjum, Sarvajeet S. Gill, Iqbal Ahmad, Armando C. Duarte, Shahid Umar, Nafees A. Khan, and Maria E. PereiraOilseed Brassica napus and Phytoremediation of LeadMuhammad Yasin Ashraf, Nazila Azhar, Khalid Mahmood, Rashid Ahmad, and Ejaz Ahmad WaraichPotential for Metal Phytoextraction of Brassica Oilseed SpeciesGuido Fellet, Luca Marchiol, and Giuseppe ZerbiPhytoremediation Capacity of Brown- and Yellow-Seeded Brassica carinataXiang Li, Margaret Y. Gruber, Kevin Falk, and Neil WestcottPhytoremediation of Toxic Metals and the Involvement of Brassica SpeciesAryadeep Roychoudhury, Sreeparna Pradhan, Bodhisatwa Chaudhuri, and Kaushik DasOther Plant Species and Contaminants’ RemediationPhytoremediation of Soils Contaminated by Heavy Metals, Metalloids, and Radioactive Materials Using Vetiver Grass, Chrysopogon zizanioidesLuu Thai Danh, Paul Truong, Raffaella Mammucari, Yuan Pu, and Neil R. FosterEnhancing Contaminants’ RemediationEffects of Biotic and Abiotic Amendments on Phytoremediation Efficiency Applied to Metal-Polluted SoilsErik J. JonerPhytoremediation: Strategies to Enhance the Potential for Toxic Metal Remediation of Brassica Oilseed SpeciesMary Varkey, Nand Lal, and Z. H. KhanEnhanced Phytoextraction Using Brassica Oilseeds: Role of ChelatesZhao Zhongqiu and Liu XiaonaOrganic Acid-Assisted Phytoremediation in Salt Marshes: From Hydroponics to Field Mesocosms TrialsM. Caçador, B. Duarte, and J. FreitasPlant–Microbe Enabled Contaminant Removal in the RhizosphereL. M. Stout and K. NüssleinBrassica Oilseeds–Microbe Interactions and Toxic Metals RemediationLixiang CaoPlant Growth-Promoting Bacteria and Metals PhytoremediationElisa Gamalero and Bernard R. GlickPlant Growth Regulators and Improvements in Phytoremediation Process Efficiency: Studies on Metal Contaminated SoilsMeri Barbafieri, Jose R. Peralta-Videa, Francesca Pedron, and Jorge L. Gardea-TorresdeyRemediation of Sites Contaminated with Persistent Organic Pollutants: Role of BacteriaOndrej Uhlik, Lucie Musilova, Michal Strejcek, Petra Lovecka, Tomas Macek, and Martina MackovaUsing Endophytes to Enhance PhytoremediationZareen Khan and Sharon DotyGenetically Modified Plants Designed for Phytoremediation of Toxic Organic and Inorganic ContaminantsTomas Macek, Martina Novakova, Pavel Kotrba, Jitka Viktorova, Petra Lovecká, Jan Fiser, Miroslava Vrbová, Eva Tejklová, Jitka Najmanova, Katerina Demnerova, and Martina MackovaPlants’ Contaminants ToleranceUtilization of Different Aspects Associated with Cadmium Tolerance in Plants to Compare Sensitive and Bioindicator SpeciesMarisol Castrillo, Beatriz Pernia, Andrea De Sousa, and Rosa ReyesAnalytical Tools for Exploring Metal Accumulation and Tolerance in PlantsKatarina Vogel-Mikuš, Iztok Arcon, Peter Kump, Primož Pelicon, Marijan Necemer, Primož Vavpetic, Špela Koren, and Marjana RegvarMetals and Metalloids Detoxification Mechanisms in Plants: Physiological and Biochemical AspectsPalaniswamy Thangavel, Ganapathi Sridevi, Naser A. Anjum, Iqbal Ahmad, and Maria E. PereiraStudies on Phytoextraction Processes and Some Plants’ Reactions to Uptake and Hyperaccumulation of SubstancesAndrew Agbontalor ErakhrumenUptake and Metabolism of Pharmaceuticals and Other Emerging Contaminants by PlantsBenoit Van Aken, Rouzbeh Tehrani, and Rashid Kaveh