dNA was extracted from gills, skeletal muscle, hepatopancreas, and cephalothorax appendages
using the dNeasy (Qiagen) kit methodology. pCR-amplification was conducted
on the extracted dNA using illustra™ puReTaq Ready-To-go pCR beads (gE healthcare)
containing a concentration of 200 μM dNTp’s in 10 mM Tris-hCl ph 9.0, 50 mM KCl and
1.5 mM MgCl2
in a 25-μl reaction volume and specific primer pairs for detection of wSSv,
wS500F: CCT TCC ATC TCC ACC ACA CTT and wS500R: CTg TTC CTT ggC AgA
gCA TTC that yields a 490 bp amplicon; wS800F: CTC ACC TgC gCT TCT CAC CTC
ATg CTT and wS800R: gCC ggC CAg TTC gTT CAC gAT AAC CTT that yields a 783 bp
amplicon (Nunan et al., 1998, d. Lightner, University of Arizona, pers. comm.). Both one-step
and nested reactions were carried out using these primers with the wS500F/R as the internal
primer set. A nested two-step pCR using the world Animal health Organization (or Office
dNA was extracted from gills, skeletal muscle, hepatopancreas, and cephalothorax appendagesusing the dNeasy (Qiagen) kit methodology. pCR-amplification was conductedon the extracted dNA using illustra™ puReTaq Ready-To-go pCR beads (gE healthcare)containing a concentration of 200 μM dNTp’s in 10 mM Tris-hCl ph 9.0, 50 mM KCl and1.5 mM MgCl2 in a 25-μl reaction volume and specific primer pairs for detection of wSSv,wS500F: CCT TCC ATC TCC ACC ACA CTT and wS500R: CTg TTC CTT ggC AgAgCA TTC that yields a 490 bp amplicon; wS800F: CTC ACC TgC gCT TCT CAC CTCATg CTT and wS800R: gCC ggC CAg TTC gTT CAC gAT AAC CTT that yields a 783 bpamplicon (Nunan et al., 1998, d. Lightner, University of Arizona, pers. comm.). Both one-stepand nested reactions were carried out using these primers with the wS500F/R as the internalprimer set. A nested two-step pCR using the world Animal health Organization (or Office
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