Among the one trillion or so species that share space on our planet, complex relationships have emerged over time. Such relationships, in which two or more species closely interact, are collectively termed symbiosis. Although it’s commonly assumed that symbiotic relationships are mutually beneficial, this example constitutes only one type of symbiosis (known as mutualism). The traditional predator-prey relationship, clearly a one-sided arrangement, is also an example of symbiosis.
The sheer diversity of microbial species has led to the development of many well-characterized relationships with plants and animals. Perhaps the best-known example of mutualism in this context is the process of nitrogen fixation. In this process, various types of bacteria that live in water, soil or root nodules convert atmospheric nitrogen into forms that are readily used by plants. On the other hand, some types of bacteria-plant relationships are parasitic: the bacteria rely on the plant for survival but end up damaging their host. Parasitic relationships can have devastating ecological and economic consequences when they affect food crops.
How many times have you encountered a technical problem in your work that you needed to solve? Maybe it was an issue of workflow efficiency—too many samples, but too little time for hands-on work. Or maybe there wasn’t a technology available for what you needed to accomplish, and you didn’t have time to develop something yourself. Or still, maybe you were starting into a new research area and didn’t yet have the expertise to solve the problem. Wouldn’t it be nice if you had some support to figure out a solution for these challenges? We have scientists at your service! You may already know about our top-notch team of Technical Services Scientists. They can assist you via phone, email, or chat to walk you through any technical issue, regardless of whether or not you’re using Promega products (not too many companies can say that!).
Isolating DNA from plant tissues is difficult for many reasons. Unlike animal cells, plant cells have rigid cell walls, often made of tough fibrous material, and contain proteins and enzymes and other compounds such as polysaccharides and polyphenols that play a role in different cellular processes. These compounds can interfere with DNA isolation as well as downstream applications such as PCR. For these reasons, DNA isolation methods that are used successfully for other sample types may not work well to isolate DNA from plant material. Continue reading “DNA Purification from Plants: Not All Methods are Equal”
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