Record ID No. |
555 |
Author(s) |
Burrows R. L., Pfleger F .L. , 2002 |
Affiliation |
S Dakota State University, HFLP Dept, 201 NPB, Brookings, SD 57007 USA |
Title |
Host responses to AMF from plots differing in plant diversity |
Source. Vol.(no):Page |
Plant and Soil, 240(1),169-179p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Mycorrhizal efficiency |
Host |
Lespedeza capitata, Schizachyrium, Scoparum, Liatris aspera |
Organism |
n.a. |
Country |
U.S.A, North America |
Abstracts |
Increased plant species richness in a plant community
leads to changes in the composition of the associated
arbuscular-mycorrhizal fungal (AMF) community. We tested whether
AMF from plots with increased plant diversity cause significant
differences in the growth of Lespedeza capitata, Schizachyrium
scoparium or Liatris aspera. Seedlings of each were transplanted
into pasteurized soil inoculated with soil from their own
monocultures, or from plots with one, seven, or 15 additional
plant species. In addition, inocula from S. Scoparium and L.
Capitata monocultures were tested for reciprocal growth effects.
Inocula from plots containing the native tallgrass prairie species Lespedeza capitata showed increasing AMF species
richness and spore density with increasing plant diversity; this
was not true with plots containing Schizachyrium scoparium or
Liatris aspera. All three species responded to AMF inoculation
with increased growth and Cu concentrations, and lowered Mn
concentrations compared to non-inoculated control plants.
Increasing the plant diversity of the inoculum source-plots
significantly affected plant weights of L. Capitata, but not of
the other two host plants. Both S. Scoparium and L. Capitata
showed increases in growth with inoculum from S. Scoparium
monocultures compared to that from L. Capitata monocultures.
Spore density of inoculum source plots was associated with
subsequent plant growth or nutrient content only in Lespedeza
plots, which contained considerably fewer spores, plant cover,and root biomass in plots with lower plant diversity
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