Two pathways exist for plant Pi uptake from soil: via root epidermal cells (direct pathway) or via associations with arbuscular mycorrhizal (AM) fungi, and the two pathways interact in a complex manner. This study investigated distal and local effects of AM colonization on direct root Pi uptake and root growth, at different soil P levels. Medicago truncatula was grown at three soil P levels in ...

Plant species have different traits for mobilizing sparingly soluble phosphorus (P) resources, which could potentially lead to overyielding in P uptake by plant mixtures compared monocultures due higher as a result of resource partitioning and facilitation. However, there is circumstantial evidence at best these mechanisms. Overyielding (the outcome) easily confused with underlying mechanisms b...

Elevated CO2 (eCO2) increase plant biomass and might lead to nutritional losses. The results showed that eCO2 under Fe-deficiency stimulates root dry weight from 0.37–0.80 g plant?1 shoot 0.82–2.10 plant?1, without compromising root/shoot ratio. Besides, improved the chlorophyl content of Fe-deficient plants. However, downregulation photosynthesis, reduction in stomatal conductance transpiratio...

Phosphorus (P) fertilization is a major input in crop production on the Great Plains, as many soils lack sufficient P for effective crop production. To optimize crop nutrition, P must be available to the crop in adequate amounts early in the growing season. Phosphorus is needed from the earliest stages of crop growth, because it is important in nearly all energy-requiring processes in the plant...

Bioavailability of engineered metal nanoparticles affects uptake in plants, impacts on ecosystems, and phytoremediation. We studied uptake and translocation of Ti in plants when the main source of this metal was TiO2 nanoparticles. Two crops (Phaseolus vulgaris (bean) and Triticum aestivum (wheat)), a wetland species (Rumex crispus, curly dock), and the floating aquatic plant (Elodea canadensis...

Here, we used phosphorus-32 (32P) labelling in compartmented pots combined with quantitative real-time polymerase chain reaction (PCR) analysis of phosphate(Pi) transporter gene expression to investigate regulation of Pi uptake pathways in barley (Hordeum vulgare), an arbuscular mycorrhizal (AM) plant that does not show strong positive growth responses to colonization.Barley was colonized well ...

Experiments were conducted to determine the ability of citrate to enhance the plant uptake of weathered 2,2-bis(p-chlorophenyl)1,1-dichloroethylene (p,p'-DDE) from soil. Plots containing three rows of clover, mustard, hairy vetch, or rye grass were constructed in soils containing p,p'-DDE. On 11 occasions, the rows of each crop received water or sodium citrate (0.005 or 0.05 M). For each crop, ...

Chemical properties and nutrient release pattern from compost are influenced by composted plant materials (CPM) duration of composting (DC). The following materials; guinea grass (GGC), tridax weed (TWC), siam (SWC) maize stover (MSC) were with cow dung. Pot field experiments carried out to evaluate the effect these CPM on growth yield performance maize, soil after harvest. pot trial was a 4 × ...