Abstract
RNA interference (RNAi) is a powerful technique enabling the identification of the genes involved in a certain cellular process. Here, we discuss protocols for microscopy-based RNAi screening in protonemal cells of the moss Physcomitrella patens, an emerging model system for plant cell biology. Our method is characterized by the use of conditional (inducible) RNAi vectors, transgenic moss lines in which the RNAi vector is integrated, and time-lapse fluorescent microscopy. This method allows for effective and efficient screening of >100 genes involved in various cellular processes such as mitotic cell division, organelle distribution, or cell growth.
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