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Example sentences for: petunia
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In another type of experiment, efforts to enhance floral coloration in petunia by overexpressing a transgene encoding a protein involved in pigment synthesis led paradoxically to partial or complete loss of color (Figure 2).
In contrast, in the PAI gene family, combining the master locus (WS ecotype PAI1/PAI4 ) with a non-allelic singlet target locus possessing 100% sequence identity (Columbia PAI2 ) resulted in methylation after two generations of heterozygous contact, and methylation became more pronounced after another two generations [ 12 ] . Likewise, in the petunia CHS gene family, interaction between an epiallele of the direct-repeat locus, CHS41, with two types of target loci, either an unlinked inverted repeat locus or a more naïve allele of CHS41, was initially additive and only became suppressive in the second generation [ 4 10 ] .
These searches, e.g. the search initiated with the core RDRP module from Petunia (residues 37-775), readily retrieved RDRPs from plants, C. elegans , Dictyostelium discoideum , several fungi, and Giardia lamblia with statistically highly significant expectation (E) values.
The Myb1 motif was identified in Antirrhinum . [ 86 ] , the Myb2 and Myb3 motifs in Petunia [ 87 ] . These sequences have not been verified as valid Myb binding motifs in Arabidopsis . The under-representation of the DRE-like element suggests that genes whose expression is modulated by pathogen attacks and oxidative stress signaling may have minimal overlap with genes involved in dehydration and cold responses.
As exemplified by the petunia cosuppression experiments, nonessential plant pigments provide conspicuous visual markers that vividly reveal gene silencing.
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