PMID- 19896986 OWN - NLM STAT- MEDLINE DCOM- 20100301 LR - 20191210 IS - 1872-8359 (Electronic) IS - 0167-7012 (Linking) VI - 80 IP - 1 DP - 2010 Jan TI - Development of a molecular approach to describe the composition of Trichoderma communities. PG - 63-9 LID - 10.1016/j.mimet.2009.11.001 [doi] AB - Trichoderma and its teleomorphic stage Hypocrea play a key role for ecosystem functioning in terrestrial habitats. However, little is known about the ecology of the fungus. In this study we developed a novel Trichoderma-specific primer pair for diversity analysis. Based on a broad range master alignment, specific Trichoderma primers (ITSTrF/ITSTrR) were designed that comprise an approximate 650bp fragment of the internal transcribed spacer region from all taxonomic clades of the genus Trichoderma. This amplicon is suitable for identification with TrichoKey and TrichoBLAST. Moreover, this primer system was successfully applied to study the Trichoderma communities in the rhizosphere of different potato genotypes grown at two field sites in Germany. Cloning and sequencing confirmed the specificity of the primer and revealed a site-dependent Trichoderma composition. Based on the new primer system a semi-nested approach was used to generate amplicons suitable for denaturing gradient gel electrophoresis (DGGE) analysis and applied to analyse Trichoderma communities in the rhizosphere of potatoes. High field heterogeneity of Trichoderma communities was revealed by both DGGE. Furthermore, qPCR showed significantly different Trichoderma copy numbers between the sites. CI - Copyright 2009 Elsevier B.V. All rights reserved. FAU - Meincke, Remo AU - Meincke R AD - Environmental Biotechnology, Graz University of Technology, Petersgasse 12, A-8010 Graz, Austria. FAU - Weinert, Nicole AU - Weinert N FAU - Radl, Viviane AU - Radl V FAU - Schloter, Michael AU - Schloter M FAU - Smalla, Kornelia AU - Smalla K FAU - Berg, Gabriele AU - Berg G LA - eng PT - Evaluation Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20091106 PL - Netherlands TA - J Microbiol Methods JT - Journal of microbiological methods JID - 8306883 RN - 0 (DNA Primers) RN - 0 (DNA, Fungal) SB - IM MH - Biodiversity MH - DNA Fingerprinting/*methods MH - DNA Primers/genetics MH - DNA, Fungal/genetics MH - Molecular Sequence Data MH - Mycological Typing Techniques/*methods MH - Phylogeny MH - *Soil Microbiology MH - Solanum tuberosum/microbiology MH - Trichoderma/classification/genetics/*isolation & purification EDAT- 2009/11/10 06:00 MHDA- 2010/03/02 06:00 CRDT- 2009/11/10 06:00 PHST- 2009/07/14 00:00 [received] PHST- 2009/11/02 00:00 [revised] PHST- 2009/11/02 00:00 [accepted] PHST- 2009/11/10 06:00 [entrez] PHST- 2009/11/10 06:00 [pubmed] PHST- 2010/03/02 06:00 [medline] AID - S0167-7012(09)00352-2 [pii] AID - 10.1016/j.mimet.2009.11.001 [doi] PST - ppublish SO - J Microbiol Methods. 2010 Jan;80(1):63-9. doi: 10.1016/j.mimet.2009.11.001. Epub 2009 Nov 6.