The influence of soil aeration on the efficiency of vesicular‐arbuscular mycorrhizas
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TLDR
In this paper, the growth and mineral uptake of Eupatorium odoratum inoculated with Glomus macrocarpus was studied and showed that mycorrhizal plants contained higher quantities of N, K, Ca, and Mg than non-mycorrhizeal and showed positive response in nutrient uptake to increase in soil O2.Abstract:
SUMMARY
Oxygen concentrations in the soil atmosphere greatly influenced the growth and mineral uptake of Eupatorium odoratum inoculated with Glomus macrocarpus. Shoot and root dry weights and length of mycorrhizal plants increased with O2 concentration up to 16%. Mycorrhizal plants at 21% O2 or non-aerated controls were smaller than those at 12 and 16% O2. Non-mycorrhizal plants had lower shoot and root dry wts than mycorrhizal plants at all O2 levels except at 0%. Phosphorus concentration in mycorrhizal and non-mycorrhizal plants differed significantly but did not increase with increasing O2. Mycorrhizal plants contained higher quantities of N, K, Ca and Mg than non-mycorrhizal and showed positive response in nutrient uptake to increase in soil O2. Inoculation and increased soil O2 resulted in higher concentrations of K and Mg but not of N and Ca. The development of Glomus macrocarpus exhibited quantitative and qualitative response to different soil O2 levels.read more
Citations
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Journal ArticleDOI
Mineral acquisition by arbuscular mycorrhizal plants
R. B. Clark,S.K. Zeto +1 more
TL;DR: The effects of AMF on enhancing/reducing acquisition of phosphorus (P), nitrogen (N), sulfur (S), boron (B), potassium (K), calcium (Ca), magnesium (Mg), sodium (Na), zinc (Zn), copper (Cu), manganese (Mn), iron (Fe), aluminum (Al), silicon (Si), and some trace elements in plants are reviewed.
Book ChapterDOI
Oxygen availability as an ecological limit to plant distribution
TL;DR: The distribution and physiology of plants from a range of habitats are compared and the future prospects for oxygen limitations for plants rooted in upland and oceanic areas are discussed in relation to possible changes in the hydrologic cycle as a consequence of the greenhouse effect.
Book ChapterDOI
Mycorrhizas and their Significance in Nodulating Nitrogen-Fixing Plants
TL;DR: This chapter discusses the role of mycorrhizas in the growth and nutrition of nitrogen-fixing nodulated plants, and presents the ecological significance of plants bearing the two types of symbioses, with emphasis on the possibilities of harnessing them to increase crop yield.
Journal ArticleDOI
Vesicular-arbuscular mycorrhizas and soil salinity
Sato Juniper,Lynette Abbott +1 more
TL;DR: There is clear evidence that germination of spores and subsequent hyphal growth of some VA mycorrhizal fungi are reduced by increasing concentration of salts, however, in plant growth experiments, experimental designs and methodologies have generally not allowed the direct effects of salinity on fungal growth to be separated from plant-mediated effects.
References
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Journal ArticleDOI
Improved procedures for clearing roots and staining parasitic and vesicular-arbuscular mycorrhizal fungi for rapid assessment of infection.
J.M. Phillips,D. S. Hayman +1 more
TL;DR: To improve stain penetration and clearing in whole mycorrhizal roots of onion and other host plants, and in roots infected by other fungi, the following two procedures are developed, which give deeply stained fungal structures which show distinctly against the outlines of the cells in the cortex of intact roots.
Journal ArticleDOI
Advances in the Study of Vesicular-Arbuscular Mycorrhiza
TL;DR: With improved techniques, very striking effects of inoculation on plant growth and phosphate uptake have been demonstrated beyond doubt, and this has led to studies of the uptake mechanism and the source of the extra phosphate.
Journal ArticleDOI
Translocation and transfer of nutrients in vesicular‐arbuscular mycorrhizas
Karen M. Cooper,Peter B. Tinker +1 more
TL;DR: Trifolium repens or Allium cepa (onion) infected with the mycorrhizal fungus Glomus mosseae were grown in split-plate cultures, so that nutrients could be supplied to the external hyphae only.
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