We currently do not have a list of plants, aside from what we have shown in the protocols:–A.thaliana–Juniper–Milkweed Leaf–Milkweed Leaflet–Milkweed Pre-Flowering Bud–Corn Kernel–Sunflower Seed–Nicotiana sp.

A viscous sample can indicate incomplete sample lysis. Try using less of your sample and optimize bead beating conditions (duration, speed, time) to ensure samples are thoroughly lysed. After bead beating, pellet the cell debris before moving on. Adding more Genomic Lysis buffer to the lysate can help dilute and deproteinate the sample, making the sample less viscous and more suitable for DNA recovery.

We have validated our kits with both high-speed homgenizers and low-speed disruptors. We highly recommend users to optimize their bead beating conditions for their own instruments. We recommend using a 2 ml-tube adapter to ensure that the bead beating is efficent (do not use adapters made of foam). For high-speed homogenizers, we recommend a total of 5 mins bead beating (1 min interval at 6.5 m/s with 5 mins rest, repeat 5 times). For low-speed cell disruptors, we recommend 30 mins at max speed.

Environmental samples often contain inhibitors such as polyphenolics, humic/fulvic acids, tannins, melanins, etc. that often co-purify and affect downstream applications such as PCR. The Zymo-Spin III-HRC column removes these polyphenolic PCR inhibitors to recover DNA that is ready for sensitive downstream applications such as Next-Gen Sequencing, quantitative PCR, etc.

Addition of beta-mercaptoethanol is recommended to enhance sample lysis, but can be substituted with dithiothreitol (DTT, final concentration of 10 mM). However, if bead beating is optimized and lysis is efficient, the addition of BME is not necessary and can be omitted.

The Quick-DNA kits recover RNA-free genomic DNA. The selective chemistry allows for binding of double stranded DNA to the column and for RNA to flow through. No RNase A treatment is required when processing samples within kit capacity.