An RNA-dependent RNA polymerase is required for paramutation in maize
Article Abstract:
The map-based cloning of mediator of paramutation1 (mop1) is reported in maize, which is an RNA-dependent RNA polymerase gene (RDRP), most similar to the RDRP associated with the production of short interfering RNA (siRNA) targeting chromatin in plants. Nuclear run-on assays reveal that the tandem repeats required for the b1 locus paramutation are transcribed from both strands, but siRNAs are not detected. It is proposed that the mop1RDRP is required to maintain a threshold level of repeat RNA, which maintains heritable chromatin states associated with paramutation.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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An extra dimension to olfaction
Article Abstract:
A second class of chemosensory receptor expressed by olfactory sensory neurons has provided new insights into the molecular and cellular mechanisms used to detect olfactory cues. The quantitative reverse transcription-polymerase chain reaction (Q-PCR) is used to understand the major functions of trace amine-associated receptor (TAAR), including the detection of olfactory cues by nose.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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The contribution of species richness and composition to bacterial services
Article Abstract:
Experimental designs reveal that a decelerating relationship is present between community respiration and increasing bacterial diversity. Results suggest that both synergistic interactions among bacterial species and the composition of the bacterial community are important in determining the level of ecosystem functioning.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2005
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