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The identification of suitable reference genes is critical for obtaining reliable results from gene expression studies using quantitative real-time PCR (qPCR) because the expression of reference genes may vary considerably under different experimental conditions. In most cases, however, commonly used reference genes are employed in data normalization(More)
Homogeneous low phosphorus availability was reported to regulate root architecture in Arabidopsis via auxin, but the roles of auxin in root architecture plasticity to heterogeneous P availability remain unclear. In this study, we employed auxin biosynthesis-, transport- and signalling-related mutants. Firstly, we found that in contrast to low P (LP) content(More)
This paper reports the successful expression of a lactoferrin gene-obtained from the mammary gland tissue of Tibetan sheep-in the yeast Pichia pastoris GS115 using pPICZαA as the recombinant plasmid and α-factor signal sequence for secretion. The recombinant lactoferrin was purified by ammonium sulfate precipitation, ion-exchange column chromatography and(More)
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