Record ID No. |
2006 |
Author(s) |
Yamashita S., Fukuda K., Ugawa S , 2007 |
Affiliation |
Univ Tokyo, Grad Sch Frontier Sci, Dept Nat Environm Studies, Lab Evaluat Nat Environm, Kashiwanoha 5-1-5, Kashiwa, Chiba 2778063, JAPAN |
Title |
Ectomycorrhizal communities on tree roots and in soil propagule banks along a secondary successional vegetation gradient |
Source. Vol.(no):Page |
Forest Science.53(6):635-644p. |
Categories |
Ectomycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
JAPAN, Asia |
Abstracts |
Changes in the composition of underground ectomycorrhizal communities along a
secondary successional vegetation gradient were investigated in Kashiwa City, Kanto District,
eastern Japan. Soil cores were sampled from the surface soils of six plots in a successional
series of vegetation, and ectomycorrhizal root tips were classified into morphotypes by
macroscopic observation and measurement of the internal transcribed spacer 3-4 length of rDNA.
The inoculum potential of ectomycorrhizal fungi in the soils was also investigated by germinating
and growing Japanese red pine seedlings in pots. The species richness of ectomycorrhizal fungi on
tree roots increased along the successional gradient from the pioneer tree stage (Pinus
densiflora Sieb. Et Zucc. Stands) to the middle stage (deciduous Quercus serrata Thunb. And
Castanea crenata Sieb. Stands) and then slightly decreased in the climax stage (evergreen Quercus
myrsinaefolia B1. Stands). The increase in the number of ectomycorrhizal morphotypes was strongly
correlated with the increase in the biomass of ectomycorrhizal trees along the succession.
Ectomycorrhizal propagule banks were found in the soil of pioneer grass- and shrublands where
ectomycorrhizal trees were not present. Unlike the diversity of ectomycorrhizal morphotypes on
tree roots, the morphotype richness and diversity of ectomycoffhizal inocula in the soil
infective to pine seedlings increased only from the grassland to the pine successional stage and
not in the deciduous and evergreen-oak stages. The composition of ectomycorrhizal communities on
mature trees and ectomycorrhizal propagule banks in soils showed a successional gradient along
the secondary vegetation gradient, but many common morphotypes were present among the different
vegetation stages. |