Record ID No. |
1591 |
Author(s) |
HoppenerOgawa S., Leveau J H J., Hundscheid M P J., vanVeen J A., deBoer W. , 2009 |
Affiliation |
Netherlands Inst Ecol NIOO KNAW, Ctr Terr Ecol, Boterhoeksestr 48, NL-6666 GA Heteren, NETHERLANDS |
Title |
Impact of Collimonas bacteria on community composition of soil fungi |
Source. Vol.(no):Page |
Environmental Microbiology. 11(6): 1444-1452 |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Country |
Netherlands |
Abstracts |
The genus Collimonas consists of soil bacteria that have the potential to grow at the expense
of living fungal hyphae. However, the consequences of this mycophagous ability for soil fungi are unknown. Here
we report on the development of fungal communities after introduction of collimonads in a soil that had a low
abundance of indigenous collimonads. Development of fungal communities was stimulated by addition of cellulose
or by introducing plants (Plantago lanceolata). Community composition of total fungi in soil and rhizosphere
and of arbuscular mycorrhizal fungi in roots was examined by PCR-DGGE. The introduction of collimonads altered
the composition of all fungal communities studied but had no effects on fungal biomass increase, cellulose
degrading activity or plant performance. The most likely explanation for these results is that differences in
sensitivity of fungal species to the presence of collimonads result in competitive replacement of species. The
lab and greenhouse experiments were complemented with a field experiment. Mesh bags containing sterile sand
with or without collimonads were buried in an ex-arable field and a forest. The presence of collimonads had an
effect on the composition of fungi invading these bags in the ex-arable site but not in the forest site. |