Recent studies of nitrogen (N) cycling in arctic tundra have indicated that inorganic N
supplied to plants by mineralization is not sufficient to meet the annual requirement of N by …

Colonization of the land by plants some 400 million years ago was associated with the
colonization of their primitive roots by soil-borne filamentous fungi (Nicolson, 1975; Simon et …

The quantitative significance of amino acids to plant nutrition remains controversial. This
experiment determined whether post‐uptake metabolism and root to shoot export differ …

The aim of the study was to investigate the ability of intact Zea mays. L. roots to regulate the
amount of free amino-acids present in the rhizosphere. Using metabolic inhibitors it was …

A glasshouse experiment was conducted in which 15N was used as a tracer applied as
(15NH4) 2SO4 to donor plants of white clover and perennial ryegrass. Nitrogen transfer via …

Arbuscular mycorrhizal (AM) fungi are obligate symbionts that colonize the roots of more
than 80% of land plants. Experiments on the relationship between the host plant and AM in …

Loblolly pine (Pinus taeda L.) seedlings were grown axenically in mycorrhizae synthesis
cultures with either the symbiont Pisolithus tinctorius (Pers.) Coker and Couch or Thelephora …

This review discusses the role arbuscular mycorrhizal fungi play in the regulation of plant
nutrient transporter genes. Many plant nutrient transporter genes appear to be …

Transport of N by hyphae of a vesicular-arbuscular mycorrhizal fungus was studied under
controlled experimental conditions. The N source was applied to the soil as 15 NH inf4 sup+ …

The aqueous medium of water plants provides two essentials; firstly, support, which is
obtained by various buoyancy mechanisms, and secondly, a nutrient supply where the …