AM fungi provide direct links between soil and roots, and consequently may have significant influences on the uptake and translocation of organics by plants, as well as the dissipation and degradation of organics in soils including atrazine [21], [22], PAHs (polycyclic aromatic hydrocarbon) [23] [26], DDT [27] and weathered p,p-DDE in soils [28].
Interactions between soil and tree roots accelerate long-term soil carbon decomposition.
By comparing bioavailability of As and P in biochar and non-biochar amended soils, important relations between soil and plant roots have been revealed.
This may be partly attributed to the fact that mycorrhizal fungi have been recognized as the only ones providing a direct linkage between soil and plant roots (Leyval et al., 1997).
We found no relationship between soil moisture and root biomass, production, or their vertical distributions, but decomposition decreased and SOC increased as expected with increasing soil moisture.
The 16S rRNA gene survey revealed a clear dichotomy between the taxonomic composition of soil and root bacterial communities, a differentiation which, in barley, starts in the rhizosphere.
To explore a centralized signal for the evaluation of plant water status based on soil water status, two greenhouse experiments investigating the effect of the relative distribution between soil water and roots on wheat and rice were conducted.
where C is the effective soil cohesion (kPa), including the cohesion among soil particles and the cohesion between soil particles and roots; σ is the effective stress force that is normal to the slope (kPa); and φ is the effective angle of shear resistance.
Regarding mutualistic soil microorganisms, we will focus on mycorrhizas (associations between soil fungi and roots of vascular plants) and rhizobia (α- or β-Proteobacteria engaged in symbiosis with legumes).
The traditional soil-based approach for the estimation of PWDI was improved by replacing the arithmetic averaged SWC with the root-weighted SWC to take the effect of the relative distribution between soil water and roots into consideration.
