PMID- 16269710 OWN - NLM STAT- MEDLINE DCOM- 20051220 LR - 20190108 IS - 0099-2240 (Print) IS - 1098-5336 (Electronic) IS - 0099-2240 (Linking) VI - 71 IP - 11 DP - 2005 Nov TI - Links between plant and rhizoplane bacterial communities in grassland soils, characterized using molecular techniques. PG - 6784-92 AB - Molecular analysis of grassland rhizosphere soil has demonstrated complex and diverse bacterial communities, with resultant difficulties in detecting links between plant and bacterial communities. These studies have, however, analyzed "bulk" rhizosphere soil, rather than rhizoplane communities, which interact most closely with plants through utilization of root exudates. The aim of this study was to test the hypothesis that plant species was a major driver for bacterial rhizoplane community composition on individual plant roots. DNA extracted from individual roots was used to determine plant identity, by analysis of the plastid tRNA leucine (trnL) UAA gene intron, and plant-related bacterial communities. Bacterial communities were characterized by analysis of PCR-amplified 16S rRNA genes using two fingerprinting methods: terminal restriction fragment length polymorphisms (T-RFLP) and denaturing gradient gel electrophoresis (DGGE). Links between plant and bacterial rhizoplane communities could not be detected by visual examination of T-RFLP patterns or DGGE banding profiles. Statistical analysis of fingerprint patterns did not reveal a relationship between bacterial community composition and plant species but did demonstrate an influence of plant community composition. The data also indicated that topography and other, uncharacterized, environmental factors are important in driving bacterial community composition in grassland soils. T-RFLP had greater potential resolving power than DGGE, but findings from the two methods were not significantly different. FAU - Nunan, Naoise AU - Nunan N AD - Biomathematics and Statistics Scotland, Scottish Crop Research Institute, Dundee, United Kingdom. FAU - Daniell, Timothy J AU - Daniell TJ FAU - Singh, Brajesh K AU - Singh BK FAU - Papert, Artemis AU - Papert A FAU - McNicol, James W AU - McNicol JW FAU - Prosser, James I AU - Prosser JI LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Appl Environ Microbiol JT - Applied and environmental microbiology JID - 7605801 RN - 0 (DNA, Bacterial) RN - 0 (RNA, Plant) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (RNA, Transfer, Leu) RN - 0 (Soil) SB - IM MH - Bacteria/*classification/genetics/growth & development MH - DNA, Bacterial/analysis MH - *Ecosystem MH - Electrophoresis/methods MH - Plant Roots/*microbiology MH - Poaceae/*classification/genetics/*growth & development/microbiology MH - Polymorphism, Restriction Fragment Length MH - RNA, Plant/analysis/genetics MH - RNA, Ribosomal, 16S/genetics MH - RNA, Transfer, Leu/analysis/*genetics MH - Soil/analysis MH - *Soil Microbiology MH - Species Specificity PMC - PMC1287736 EDAT- 2005/11/05 09:00 MHDA- 2005/12/21 09:00 PMCR- 2005/11/01 CRDT- 2005/11/05 09:00 PHST- 2005/11/05 09:00 [pubmed] PHST- 2005/12/21 09:00 [medline] PHST- 2005/11/05 09:00 [entrez] PHST- 2005/11/01 00:00 [pmc-release] AID - 71/11/6784 [pii] AID - 2463-04 [pii] AID - 10.1128/AEM.71.11.6784-6792.2005 [doi] PST - ppublish SO - Appl Environ Microbiol. 2005 Nov;71(11):6784-92. doi: 10.1128/AEM.71.11.6784-6792.2005.