Root Exudates Increase Metal Accumulation in Mixed Cultures: Implications for Naturally Enhanced Phytoextraction
نویسندگان
چکیده
منابع مشابه
Root Exudates Increase Metal Accumulation in Mixed Cultures: Implications for Naturally Enhanced Phytoextraction
Soluble root exudates collected from the barley grown in Fe deficient-nutrition solutions were added to soil to study their effects on metal solubility. The results showed that the addition of barley root exudates from the Fe deficient-nutrition solutions resulted in a 4.7-, 3.2-, 9.7-, 4.9and 11.5-fold increase in the concentrations of soluble Cu, Pb, Zn, Cd and Fe, respectively, in comparison...
متن کاملPhytoextraction: a Review on Enhanced Metal Availability and Plant Accumulation
Phytoextraction has emerged as a novel approach to clean up metal-polluted soils in which plants are used to transfer toxic metals from soils to shoots. This review provides a synthesis of current knowledge on phytoextraction of metals from soils and their accumulation in plants. The objective is to integrate soil-related (root exudates and chemical amendments) and biological advances to sugges...
متن کاملenhanced auxin production by azospirillum pure cultures from plant root exudates
bacteria of the genus azospirillum are well known as plant growth promoting rhizobacteria. the ability to synthesize phytohormones is considered one of the most important mechanisms to promote plant growth and is widely distributed among plant-associated rhizobacteria.the most important phytohormone produced by azospirillum is the auxin indole-3-acetic acid, with the l-tryptophan as the precurs...
متن کاملHeavy Metal Accumulation in Urban Soil: a Phytoextraction Method Review
Lead (Pb), cadmium (Cd), and arsenic (As) are three common non-essential heavy metals found in urban soils and can prove toxic to animals, humans, and some plants at low concentrations. The main exposure pathways of heavy metals in humans are through ingestion and inhalation of soil particles and ingestion of contaminated food. When dealing with contaminated soil in urban environments, activiti...
متن کاملEnhanced phenanthrene biodegradation in soil by slender oat root exudates and root debris.
To investigate the mechanisms by which slender oat (Avena barbata Pott ex Link) enhances phenanthrene biodegradation, we analyzed the impacts of root exudates and root debris on phenanthrene biodegradation and degrader community dynamics. Accelerated phenanthrene biodegradation rates occurred in soils amended with slender oat root exudates as well as combined root debris + root exudate as compa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water, Air, and Soil Pollution
سال: 2008
ISSN: 0049-6979,1573-2932
DOI: 10.1007/s11270-008-9678-z