Mycorrhizae are symbiotic associations between soil fungi belonging to diverse taxa and the roots of about 90% of all terrestrial plant species. The mutualistic nature of these symbioses is based on the nutritional exchanges between the part‐ ners. However, the benefits to the plant partner are not limited to an improved mineral nutrition because they also include a general increase in stress t...

Development is a classic focus of Vygotskian cultural-historical research. On the other hand, development is curiously absent in many recent ethnographic and interactionist approaches to the study of human practices. Partly this split may be due to the normative and vertical bias commonly associated with the notion of development. But if we keep development out of our studies of work and other ...

Nursery grown seedlings of Pinus virginiana with infection by Pisolithus tinctorius (Pt) versus seedlings with naturally occurring mycorrhizae were used in greenhouse experiments to determine the influence of mycorrhizae on manganese and zinc uptake and distribution in seedlings. Unamended Pt mycorrhizal seedlings and those treated with 48.0 mg Mn/pot over a 2-week period accumulated significan...

<p>Biduri (<em>Calotropis gigantea</em>) was a plant with several benefits, namely as medicinal and textile material. Biduri wild that could grow in various types of soil conditions. The existence biduri still not fully utilized by many people. So it necessary to develop the cultivation technology take advantage this plant. This research conducted at field laboratory Jumantono...

this study was conducted to determine the effects of arbuscular mycorrhizal fungi (glomus mosseae and glomus intraradices) symbiosis on mineral uptake of two pistachio cultivars (pistacia vera cv. qazvini and pistacia vera cv. badami-riz-zarand) grown in the greenhouse under different drought stress levels. drought stress (ds) reduced the mycorrhizal colonization in both cultivars as well as nu...

A fungal internal transcribed spacer region was used to identify the mycorrhizae of Cymbidium kanran. The family Russulaceae was found to be the most frequently occurring group in both root and soil samples. In phylogenetic analyses, the majority of the Russulaceae clones were clustered with Russula brevipes and R. cyanoxantha. Therefore, C. kanran may form symbiotic relationships with the genu...

Organic nitrogen (ON) is the most common form of nitrogen in the soil. If this form is the most abundant then many new questions must be addressed in order to fully understand the breakdown of ON such as what organisms are incorporating the nitrogen, the rate of uptake and the effect of concentration on uptake rate. Many measurements have been made regarding the uptake rate of amino acid in soi...

In addition to their well-recognized roles in plant nutrition and communities, mycorrhizas can influence the key ecosystem process of soil aggregation. Here we review the contribution of mycorrhizas, mostly focused on arbuscular mycorrhizal fungi (AMF), to soil structure at various hierarchical levels: plant community; individual root; and the soil mycelium. There are a suite of mechanisms by w...