MARs in Plants and Their Effects on the Transgene Expression
植物的MAR及其对转基因表达的效应 MARs in Plants and Their Effects on the Transgene Expression

DNA sequences called matrix attachment regions (MARs) have recently attracted much attention because of their perceived capacity to increase levels of transgene expression and to reduce transformant-to-transformant variation of transgene expression in plants. Work with MARs in plants is in its early stage .In the present paper ,we reviewed the procedure to isolate and identify MAR sequences from higher plants, the sequence characteristics of the plant MARs and the effect of MARs on the transgene expression in plants. Funthermore, the possible mechanism to explain how MARs affect transgene expression in transformants was discussed.